C10300 Oxygen-Free Extra Low Phosphorus (OFXLP) Copper
Primary Designation:UNS C10300
Aliases:
Oxygen-Free Extra Low PhosphorusOFXLP CopperC10300
Mat Grades internal verification confirms source-backed fidelity and data integrity. It does not constitute external certification, ASTM/CDA endorsement, or guaranteed material conformity for procurement.
Data Completeness & Record Integrity:2 composition elements and 144 contextual property values cataloged.
Omitted fields represent unverified parameters. "Missing is better than invented."
Key Engineering Properties
Representative source rows, qualified by their reported conditions. Inspect the tables below for all values, limits, and source notes.
Density
8.941 g/cm³TYPICAL · at 20 °C
Electrical Conductivity
99 % IACSTYPICAL · at 20 °C
Thermal Conductivity
385.95 W/(m·K)TYPICAL · at 20 °C
Specific Heat Capacity
385.2 J/(kg·K)TYPICAL · at 20 °C
Melting Range (Solidus / Liquidus)
1082.8 – 1082.8 °C1981.0 – 1981.0 °F
Solidus: 1082.8°C | Liquidus: 1082.8°CComposition Excerpt
Cu ≥ 99.95 wt%Copper (min)
Standard Elemental Basis: MINEngineering Summary
UNS C10300 Oxygen-Free Extra Low Phosphorus (OFXLP) Copper is high-purity unalloyed copper deoxidized with 0.001% to 0.005% residual phosphorus. This controlled trace addition ensures complete immunity to hydrogen embrittlement during high-temperature brazing and welding while retaining minimum 99% IACS electrical conductivity and high thermal conductivity.
Documented Product Applications (Cited CDA Reference Profile)
- ›Applications Requiring Good Brazing: Conductivity (Electrical)
- ›Applications Requiring Good Brazing: Conductivity (Thermal)
- ›Applications Requiring Good Weldability: Conductivity (Electrical)
- ›Applications Requiring Good Weldability: Conductivity (Thermal)
- ›Applications Requiring Good Weldability: Welding Characteristics
- ›Applications Requiring High Conductivity: Conductivity (Thermal)
- ›Billet Mold Tube: Composition
- ›Billet Mold Tube: Conductivity (Thermal)
- ›Billet Mold Tube: Corrosion Resistance
- ›Busbars: Brazing Characteristics
- ›Busbars: Conductivity (Electrical)
- ›Busbars: Conductivity (Thermal)
Recognized Aliases
Source-backed commercial trade name and short designations cataloged in canonical data.
Oxygen-Free Extra Low PhosphorusOFXLP CopperC10300
Standard Designations & Applicable Specifications
Semantically classified designations distinguishing primary standard identifiers, commercial trade names, and applicable specification references.
Direct Standard DesignationsDIRECT DESIGNATION
2 Primary Identifiers| System | Identifier | Standard System Name | Classification Notes & Provenance |
|---|---|---|---|
| UNSPRIMARY | C10300 | Unified Numbering System | Unified Numbering System standard designation for copper alloys (CDA / SAE / ASTM)Ref: CDA UNS Standard Designations Register (C10300) |
| CDA | Alloy 103 | Copper Development Association Alloy Number | CDA three-digit legacy designationRef: CDA UNS Standard Designations Register (C10300) |
Recognized Commercial Aliases & Trade NamesCOMMON ALIAS
4 Listed| Recognized Name / Alias | Classification | Technical Usage & Context |
|---|---|---|
| Oxygen-Free Extra Low Phosphorus Copper | Standard Commercial Name | CDA Standard Commercial Name |
| Oxygen-Free Extra Low Phosphorus | Commercial Alias | Colloquial or commercial industry synonym |
| OFXLP Copper | Commercial Alias | Colloquial or commercial industry synonym |
| C10300 | Commercial Alias | Colloquial or commercial industry synonym |
Applicable Specifications & Product Form ReferencesSPECIFICATION REFERENCE
12 Applicable Standards| Standards Body | Specification Code | Specification Title / Scope | Relationship Type |
|---|---|---|---|
| ASTM | ASTM B577 | Detection of Cuperous Oxide (Hydrogen Embrittlement Susceptibility) in Copper | Specification Reference |
| ASTM | ASTM B224 | Standard Classification of Coppers | Specification Reference |
| MILITARY | MILITARY MIL-B-20292 | BLANKS, ROTATING BAND, FOR PROJECTILES | Specification Reference |
| ASTM | ASTM B152/B152M | COPPER SHEET, STRIP, PLATE AND ROLLED BAR | Specification Reference |
| ASTM | ASTM B187/B187M | COPPER BUS BAR, ROD AND SHAPES AND GENERAL PURPOSE ROD, BAR AND SHAPES | Specification Reference |
| FEDERAL | FEDERAL QQ-B-650 | BRAZING ALLOY, COPPER, COPPER-ZINC, AND COPPER-PHOSPHORUS | Specification Reference |
| ASME | ASME SB187 | COPPER BUS BAR, ROD AND SHAPES AND GENERAL PURPOSE ROD, BAR AND SHAPES | Specification Reference |
| ASME | ASME SB359 | COPPER & COPPER ALLOY SEAMLESS CONDENSER & HEAT EXCHANGER TUBES WITH INTEGRAL FINS | Specification Reference |
| ASTM | ASTM B687 | BRASS, COPPER AND CHROMIUM PLATED PIPE NIPPLES | Specification Reference |
| ASTM | ASTM B698 | COPPER, COPPER ALLOY PLUMBING PIPE AND TUBE | Specification Reference |
| ASTM | ASTM B302 | THREADLESS COPPER PIPE | Specification Reference |
| ASTM | ASTM B42 | SEAMLESS COPPER PIPE, STANDARD SIZES | Specification Reference |
Engineering Notice: Applicable specifications establish manufacturing requirements, dimensional tolerances, and test criteria for specific product forms (e.g. bus bar, wire, plate, pipe). They represent applicable technical standards, not alternative or equivalent alloy grades.
Chemical Composition (Weight %)
Elemental limits and values from the cited source. Preserves exact semantic limits (minimums, maximums, and ranges).
| Element | Symbol | Atomic No. | Semantic Basis | Specified Value | Unit | Metallurgical Notes & Qualification | Data Status |
|---|---|---|---|---|---|---|---|
| Copper | Cu | 29 | MINIMUM | ≥ 99.95 | wt% | CDA chemical composition specification limits for C10300: min 99.95 wt%.Ref: Copper Development Association (CDA) | VERIFIED |
| Phosphorus | P | 15 | RANGE | 0.00 – 0.01 | wt% | CDA chemical composition specification limits for C10300: 0.001 - 0.005 wt%.Ref: Copper Development Association (CDA) | VERIFIED |
* Elemental percentages are expressed in weight percent (wt%). Values represent applicable specification limits. Unspecified trace elements are not fabricated or assumed.Preserves exact semantic basis
Property Display UnitsSwitch between Canonical SI and Source / US Customary units:
Physical Properties
Source-specific physical properties. Test temperatures are shown only where reported.
| Property Parameter | Canonical SI Value | Semantic Basis | Test Temperature / Context Range | Source Raw Reference | Source Reference | Status |
|---|---|---|---|---|---|---|
| Density | 8.941 g/cm³ | TYPICAL | Test Temp: 20 °CCDA Physical Properties: Density 0.323 lb/cu in. at 68°F (8.941 g/cm³ at 20°C) | 0.323 lb/cu in. at 68°F | Copper Development Association Inc. | VERIFIED |
Thermal & Thermodynamic Properties
Phase change temperatures, thermal conductivity, specific heat, mean coefficients of thermal expansion across standardized temperature ranges, and recommended thermal processing windows.
| Property Parameter | Canonical SI Value | Semantic Basis | Test Temperature / Context Range | Source Raw Reference | Source Reference | Status |
|---|---|---|---|---|---|---|
| Liquidus Temperature | 1082.8 °C | TYPICAL | CDA Physical Properties: Liquidus temperature 1981.0 °F (1082.8 °C) | 1981.0 °F | Copper Development Association Inc. | VERIFIED |
| Solidus Temperature | 1082.8 °C | TYPICAL | CDA Physical Properties: Solidus temperature 1981.0 °F (1082.8 °C) | 1981.0 °F | Copper Development Association Inc. | VERIFIED |
| Thermal Conductivity | 385.95 W/(m·K) | TYPICAL | Test Temp: 20 °CCDA Physical Properties: Thermal conductivity 223.0 Btu/(ft·hr·°F) (385.95 W/(m·K) at 20°C) | 223.0 Btu/ sq ft/ ft hr/ °F at 68°F | Copper Development Association Inc. | VERIFIED |
| Coefficient of Thermal Expansion (CTE) | 16.92 µm/(m·K) | TYPICAL | CDA Physical Properties: CTE 9.4 µin/(in·°F) (16.92 µm/(m·K)) over range 68-21210°F | 9.4 10^-6 per °F | Copper Development Association Inc. | VERIFIED |
| Coefficient of Thermal Expansion (CTE) | 17.28 µm/(m·K) | TYPICAL | CDA Physical Properties: CTE 9.6 µin/(in·°F) (17.28 µm/(m·K)) over range 68-39210°F | 9.6 10^-6 per °F | Copper Development Association Inc. | VERIFIED |
| Coefficient of Thermal Expansion (CTE) | 17.64 µm/(m·K) | TYPICAL | CDA Physical Properties: CTE 9.8 µin/(in·°F) (17.64 µm/(m·K)) over range 68-57210°F | 9.8 10^-6 per °F | Copper Development Association Inc. | VERIFIED |
| Specific Heat Capacity | 385.2 J/(kg·K) | TYPICAL | Test Temp: 20 °CCDA Physical Properties: Specific heat 0.092 Btu/(lb·°F) (385.2 J/(kg·K)) | 0.092 Btu/ lb /°F at 68°F | Copper Development Association Inc. | VERIFIED |
| Annealing Temperature Range | 371.1 – 648.9 °C | RANGE | CDA Thermal Treatments: Annealing temperature range 700 - 1200°F (371.1 - 648.9°C) | 700 – 1200 °F | Copper Development Association Inc. | VERIFIED |
| Hot Working Temperature Range | 760 – 871.1 °C | RANGE | CDA Thermal Treatments: Hot working range 1400 - 1600°F (760.0 - 871.1°C) | 1400 – 1600 °F | Copper Development Association Inc. | VERIFIED |
Electrical Properties
Electrical conductivity and resistivity in their reported units and conditions.
| Property Parameter | Canonical SI Value | Semantic Basis | Test Temperature / Context Range | Source Raw Reference | Source Reference | Status |
|---|---|---|---|---|---|---|
| Electrical Conductivity | 99 % IACS | TYPICAL | Test Temp: 20 °CCDA Physical Properties: Volume conductivity 99.0 % IACS at 68°F (20°C) | 99.0 % IACS at 68°F | Copper Development Association Inc. | VERIFIED |
Contextual Mechanical Properties & Tempers
Engineering strength, ductility, and hardness values grouped by product form, temper, and section thickness. Mechanical properties are contextual and not isotropic averages.
Elastic & Baseline Mechanical ConstantsSource-specific measurement conditions
Modulus of Elasticity (Tension)
117.2 GPa
CDA Physical Properties: Elastic modulus in tension 17000.0 ksi (117.2 GPa)Modulus of Rigidity
44126.4 MPa
CDA Physical Properties: Shear modulus 6400.0 ksi (44126.4 MPa)Machinability Rating
20 %
CDA Fabrication Properties: Rating relative to Free-Cutting Brass (C36000 = 100%).Forgeability Rating
65 —
CDA Fabrication Properties: Relative forgeability rating.Showing 39 of 39 conditions
| Product Form | Temper / Condition | Section Size | Tensile (UTS) | Yield Strength | Elongation | Shear Strength | Fatigue Strength | Hardness (Scales Preserved) | Status |
|---|---|---|---|---|---|---|---|---|---|
| Flat Products | 1/2 Hard (H02) · 20 °CSource values and qualifiersTensile Strength: 289.6 MPa (TYPICAL)Section Size: 0.04; Section Size: 0.04 inCopper Development Association (CDA) — Yield Strength (0.5% Ext): 248.2 MPa (TYPICAL)Section Size: 0.04; Section Size: 0.04 in; Yield strength at 0.5% extension under loadCopper Development Association (CDA) — Elongation: 14 % (TYPICAL)Section Size: 0.04; Section Size: 0.04 inCopper Development Association (CDA) — | 0.04 | 289.6 MPa | 248.2 MPa | 14 % | — | — | — | VERIFIED |
| Flat Products | 1/2 Hard (H02)Source values and qualifiersRockwell B Hardness: 40 HRB (TYPICAL)Section Size: 0.04; Section Size: 0.04 inCopper Development Association (CDA) — Rockwell F Hardness: 84 HRF (TYPICAL)Section Size: 0.04; Section Size: 0.04 inCopper Development Association (CDA) — Rockwell 30T Hardness: 50 HR30T (TYPICAL)Section Size: 0.04; Section Size: 0.04 inCopper Development Association (CDA) — Shear Strength: 179.3 MPa (TYPICAL)Section Size: 0.04; Section Size: 0.04 inCopper Development Association (CDA) — Fatigue Strength: 89.6 MPa (TYPICAL)Section Size: 0.04; Section Size: 0.04 in; 10^8 cycles endurance limitCopper Development Association (CDA) — | 0.04 | — | — | — | 179.3 MPa | 89.6 MPa | 40 HRB84 HRF50 HR30T | VERIFIED |
| Flat Products | 1/4 Hard (H01) · 20 °CSource values and qualifiersTensile Strength: 262 MPa (TYPICAL)Section Size: 0.04; Section Size: 0.04 inCopper Development Association (CDA) — Yield Strength (0.5% Ext): 206.8 MPa (TYPICAL)Section Size: 0.04; Section Size: 0.04 in; Yield strength at 0.5% extension under loadCopper Development Association (CDA) — Elongation: 25 % (TYPICAL)Section Size: 0.04; Section Size: 0.04 inCopper Development Association (CDA) — | 0.04 | 262 MPa | 206.8 MPa | 25 % | — | — | — | VERIFIED |
| Flat Products | 1/4 Hard (H01)Source values and qualifiersRockwell B Hardness: 25 HRB (TYPICAL)Section Size: 0.04; Section Size: 0.04 inCopper Development Association (CDA) — Rockwell F Hardness: 70 HRF (TYPICAL)Section Size: 0.04; Section Size: 0.04 inCopper Development Association (CDA) — Rockwell 30T Hardness: 36 HR30T (TYPICAL)Section Size: 0.04; Section Size: 0.04 inCopper Development Association (CDA) — Shear Strength: 172.4 MPa (TYPICAL)Section Size: 0.04; Section Size: 0.04 inCopper Development Association (CDA) — | 0.04 | — | — | — | 172.4 MPa | — | 25 HRB70 HRF36 HR30T | VERIFIED |
| Flat Products | 1/8 Hard (H00) · 20 °CSource values and qualifiersTensile Strength: 248.2 MPa (TYPICAL)Section Size: 0.04; Section Size: 0.04 inCopper Development Association (CDA) — Yield Strength (0.5% Ext): 193.1 MPa (TYPICAL)Section Size: 0.04; Section Size: 0.04 in; Yield strength at 0.5% extension under loadCopper Development Association (CDA) — Elongation: 30 % (TYPICAL)Section Size: 0.04; Section Size: 0.04 inCopper Development Association (CDA) — | 0.04 | 248.2 MPa | 193.1 MPa | 30 % | — | — | — | VERIFIED |
| Flat Products | 1/8 Hard (H00)Source values and qualifiersRockwell B Hardness: 10 HRB (TYPICAL)Section Size: 0.04; Section Size: 0.04 inCopper Development Association (CDA) — Rockwell F Hardness: 60 HRF (TYPICAL)Section Size: 0.04; Section Size: 0.04 inCopper Development Association (CDA) — Rockwell 30T Hardness: 25 HR30T (TYPICAL)Section Size: 0.04; Section Size: 0.04 inCopper Development Association (CDA) — Shear Strength: 172.4 MPa (TYPICAL)Section Size: 0.04; Section Size: 0.04 inCopper Development Association (CDA) — | 0.04 | — | — | — | 172.4 MPa | — | 10 HRB60 HRF25 HR30T | VERIFIED |
| Flat Products | 1/8 Hard (H00) · 20 °CSource values and qualifiersTensile Strength: 248.2 MPa (TYPICAL)Section Size: 0.25; Section Size: 0.25 inCopper Development Association (CDA) — Yield Strength (0.5% Ext): 193.1 MPa (TYPICAL)Section Size: 0.25; Section Size: 0.25 in; Yield strength at 0.5% extension under loadCopper Development Association (CDA) — Elongation: 40 % (TYPICAL)Section Size: 0.25; Section Size: 0.25 inCopper Development Association (CDA) — | 0.25 | 248.2 MPa | 193.1 MPa | 40 % | — | — | — | VERIFIED |
| Flat Products | 1/8 Hard (H00)Source values and qualifiersRockwell B Hardness: 10 HRB (TYPICAL)Section Size: 0.25; Section Size: 0.25 inCopper Development Association (CDA) — Rockwell F Hardness: 60 HRF (TYPICAL)Section Size: 0.25; Section Size: 0.25 inCopper Development Association (CDA) — Shear Strength: 172.4 MPa (TYPICAL)Section Size: 0.25; Section Size: 0.25 inCopper Development Association (CDA) — | 0.25 | — | — | — | 172.4 MPa | — | 10 HRB60 HRF | VERIFIED |
| Flat Products | As Hot Rolled (M20) · 20 °CSource values and qualifiersTensile Strength: 220.6 MPa (TYPICAL)Section Size: 0.25; Section Size: 0.25 inCopper Development Association (CDA) — Yield Strength (0.5% Ext): 68.9 MPa (TYPICAL)Section Size: 0.25; Section Size: 0.25 in; Yield strength at 0.5% extension under loadCopper Development Association (CDA) — Elongation: 50 % (TYPICAL)Section Size: 0.25; Section Size: 0.25 inCopper Development Association (CDA) — | 0.25 | 220.6 MPa | 68.9 MPa | 50 % | — | — | — | VERIFIED |
| Flat Products | As Hot Rolled (M20)Source values and qualifiersRockwell F Hardness: 40 HRF (TYPICAL)Section Size: 0.25; Section Size: 0.25 inCopper Development Association (CDA) — Shear Strength: 151.7 MPa (TYPICAL)Section Size: 0.25; Section Size: 0.25 inCopper Development Association (CDA) — | 0.25 | — | — | — | 151.7 MPa | — | 40 HRF | VERIFIED |
| Flat Products | Hard (H04) · 20 °CSource values and qualifiersTensile Strength: 310.3 MPa (TYPICAL)Section Size: 1; Section Size: 1 inCopper Development Association (CDA) — Yield Strength (0.5% Ext): 275.8 MPa (TYPICAL)Section Size: 1; Section Size: 1 in; Yield strength at 0.5% extension under loadCopper Development Association (CDA) — Elongation: 20 % (TYPICAL)Section Size: 1; Section Size: 1 inCopper Development Association (CDA) — Tensile Strength: 310.3 MPa (TYPICAL)Section Size: 1; Section Size: 1 inCopper Development Association (CDA) — Yield Strength (0.5% Ext): 275.8 MPa (TYPICAL)Section Size: 1; Section Size: 1 in; Yield strength at 0.5% extension under loadCopper Development Association (CDA) — Elongation: 20 % (TYPICAL)Section Size: 1; Section Size: 1 inCopper Development Association (CDA) — | 1 | 310.3 MPa | 275.8 MPa | 20 % | — | — | — | VERIFIED |
| Flat Products | Hard (H04)Source values and qualifiersRockwell B Hardness: 45 HRB (TYPICAL)Section Size: 1; Section Size: 1 inCopper Development Association (CDA) — Rockwell F Hardness: 85 HRF (TYPICAL)Section Size: 1; Section Size: 1 inCopper Development Association (CDA) — Shear Strength: 179.3 MPa (TYPICAL)Section Size: 1; Section Size: 1 inCopper Development Association (CDA) — | 1 | — | — | — | 179.3 MPa | — | 45 HRB85 HRF | VERIFIED |
| Flat Products | Hard (H04) · 20 °CSource values and qualifiersTensile Strength: 344.7 MPa (TYPICAL)Section Size: 0.25; Section Size: 0.25 inCopper Development Association (CDA) — Yield Strength (0.5% Ext): 310.3 MPa (TYPICAL)Section Size: 0.25; Section Size: 0.25 in; Yield strength at 0.5% extension under loadCopper Development Association (CDA) — Elongation: 12 % (TYPICAL)Section Size: 0.25; Section Size: 0.25 inCopper Development Association (CDA) — | 0.25 | 344.7 MPa | 310.3 MPa | 12 % | — | — | — | VERIFIED |
| Flat Products | Hard (H04)Source values and qualifiersRockwell B Hardness: 50 HRB (TYPICAL)Section Size: 0.25; Section Size: 0.25 inCopper Development Association (CDA) — Rockwell F Hardness: 90 HRF (TYPICAL)Section Size: 0.25; Section Size: 0.25 inCopper Development Association (CDA) — Shear Strength: 193.1 MPa (TYPICAL)Section Size: 0.25; Section Size: 0.25 inCopper Development Association (CDA) — | 0.25 | — | — | — | 193.1 MPa | — | 50 HRB90 HRF | VERIFIED |
| Flat Products | Hard (H04) · 20 °CSource values and qualifiersTensile Strength: 344.7 MPa (TYPICAL)Section Size: 0.04; Section Size: 0.04 inCopper Development Association (CDA) — Yield Strength (0.5% Ext): 310.3 MPa (TYPICAL)Section Size: 0.04; Section Size: 0.04 in; Yield strength at 0.5% extension under loadCopper Development Association (CDA) — Elongation: 6 % (TYPICAL)Section Size: 0.04; Section Size: 0.04 inCopper Development Association (CDA) — | 0.04 | 344.7 MPa | 310.3 MPa | 6 % | — | — | — | VERIFIED |
| Flat Products | Hard (H04)Source values and qualifiersRockwell B Hardness: 50 HRB (TYPICAL)Section Size: 0.04; Section Size: 0.04 inCopper Development Association (CDA) — Rockwell F Hardness: 90 HRF (TYPICAL)Section Size: 0.04; Section Size: 0.04 inCopper Development Association (CDA) — Rockwell 30T Hardness: 57 HR30T (TYPICAL)Section Size: 0.04; Section Size: 0.04 inCopper Development Association (CDA) — Shear Strength: 193.1 MPa (TYPICAL)Section Size: 0.04; Section Size: 0.04 inCopper Development Association (CDA) — Fatigue Strength: 89.6 MPa (TYPICAL)Section Size: 0.04; Section Size: 0.04 in; 10^8 cycles endurance limitCopper Development Association (CDA) — | 0.04 | — | — | — | 193.1 MPa | 89.6 MPa | 50 HRB90 HRF57 HR30T | VERIFIED |
| Flat Products | Nominal Grain Size 0.025 mm (OS025) · 20 °CSource values and qualifiersTensile Strength: 234.4 MPa (TYPICAL)Section Size: 0.04; Section Size: 0.04 inCopper Development Association (CDA) — Yield Strength (0.5% Ext): 75.8 MPa (TYPICAL)Section Size: 0.04; Section Size: 0.04 in; Yield strength at 0.5% extension under loadCopper Development Association (CDA) — Elongation: 45 % (TYPICAL)Section Size: 0.04; Section Size: 0.04 inCopper Development Association (CDA) — | 0.04 | 234.4 MPa | 75.8 MPa | 45 % | — | — | — | VERIFIED |
| Flat Products | Nominal Grain Size 0.025 mm (OS025)Source values and qualifiersRockwell F Hardness: 45 HRF (TYPICAL)Section Size: 0.04; Section Size: 0.04 inCopper Development Association (CDA) — Shear Strength: 158.6 MPa (TYPICAL)Section Size: 0.04; Section Size: 0.04 inCopper Development Association (CDA) — Fatigue Strength: 75.8 MPa (TYPICAL)Section Size: 0.04; Section Size: 0.04 in; 10^8 cycles endurance limitCopper Development Association (CDA) — | 0.04 | — | — | — | 158.6 MPa | 75.8 MPa | 45 HRF | VERIFIED |
| Flat Products | Nominal Grain Size 0.050 mm (OS050) · 20 °CSource values and qualifiersTensile Strength: 220.6 MPa (TYPICAL)Section Size: 0.25; Section Size: 0.25 inCopper Development Association (CDA) — Yield Strength (0.5% Ext): 68.9 MPa (TYPICAL)Section Size: 0.25; Section Size: 0.25 in; Yield strength at 0.5% extension under loadCopper Development Association (CDA) — Elongation: 50 % (TYPICAL)Section Size: 0.25; Section Size: 0.25 inCopper Development Association (CDA) — | 0.25 | 220.6 MPa | 68.9 MPa | 50 % | — | — | — | VERIFIED |
| Flat Products | Nominal Grain Size 0.050 mm (OS050)Source values and qualifiersRockwell F Hardness: 40 HRF (TYPICAL)Section Size: 0.25; Section Size: 0.25 inCopper Development Association (CDA) — | 0.25 | — | — | — | — | — | 40 HRF | VERIFIED |
| Flat Products | Nominal Grain Size 0.050 mm (OS050) · 20 °CSource values and qualifiersTensile Strength: 220.6 MPa (TYPICAL)Section Size: 0.04; Section Size: 0.04 inCopper Development Association (CDA) — Yield Strength (0.5% Ext): 68.9 MPa (TYPICAL)Section Size: 0.04; Section Size: 0.04 in; Yield strength at 0.5% extension under loadCopper Development Association (CDA) — Elongation: 45 % (TYPICAL)Section Size: 0.04; Section Size: 0.04 inCopper Development Association (CDA) — | 0.04 | 220.6 MPa | 68.9 MPa | 45 % | — | — | — | VERIFIED |
| Flat Products | Nominal Grain Size 0.050 mm (OS050)Source values and qualifiersRockwell F Hardness: 40 HRF (TYPICAL)Section Size: 0.04; Section Size: 0.04 inCopper Development Association (CDA) — Shear Strength: 151.7 MPa (TYPICAL)Section Size: 0.04; Section Size: 0.04 inCopper Development Association (CDA) — | 0.04 | — | — | — | 151.7 MPa | — | 40 HRF | VERIFIED |
| Pipe | Hard (H04) · 20 °CSource values and qualifiersTensile Strength: 344.7 MPa (TYPICAL)Cold Work: 30%Copper Development Association (CDA) — Yield Strength (0.5% Ext): 310.3 MPa (TYPICAL)Cold Work: 30%; Yield strength at 0.5% extension under loadCopper Development Association (CDA) — Elongation: 10 % (TYPICAL)Cold Work: 30%Copper Development Association (CDA) — | — | 344.7 MPa | 310.3 MPa | 10 % | — | — | — | VERIFIED |
| Pipe | Hard (H04)Source values and qualifiersRockwell B Hardness: 50 HRB (TYPICAL)Cold Work: 30%Copper Development Association (CDA) — Rockwell F Hardness: 90 HRF (TYPICAL)Cold Work: 30%Copper Development Association (CDA) — Shear Strength: 193.1 MPa (TYPICAL)Cold Work: 30%Copper Development Association (CDA) — | — | — | — | — | 193.1 MPa | — | 50 HRB90 HRF | VERIFIED |
| Rod | Hard (H04) · 20 °CSource values and qualifiersTensile Strength: 330.9 MPa (TYPICAL)Section Size: 0.25; Cold Work: 35%; Section Size: 0.25 inCopper Development Association (CDA) — Yield Strength (0.5% Ext): 303.4 MPa (TYPICAL)Section Size: 0.25; Cold Work: 35%; Section Size: 0.25 in; Yield strength at 0.5% extension under loadCopper Development Association (CDA) — Elongation: 16 % (TYPICAL)Section Size: 0.25; Cold Work: 35%; Section Size: 0.25 inCopper Development Association (CDA) — Tensile Strength: 379.2 MPa (TYPICAL)Section Size: 0.25; Cold Work: 40%; Section Size: 0.25 inCopper Development Association (CDA) — Yield Strength (0.5% Ext): 344.7 MPa (TYPICAL)Section Size: 0.25; Cold Work: 40%; Section Size: 0.25 in; Yield strength at 0.5% extension under loadCopper Development Association (CDA) — Elongation: 20 % (TYPICAL)Section Size: 0.25; Cold Work: 40%; Section Size: 0.25 inCopper Development Association (CDA) — Tensile Strength: 310.3 MPa (TYPICAL)Section Size: 0.25; Cold Work: 16%; Section Size: 0.25 inCopper Development Association (CDA) — Yield Strength (0.5% Ext): 275.8 MPa (TYPICAL)Section Size: 0.25; Cold Work: 16%; Section Size: 0.25 in; Yield strength at 0.5% extension under loadCopper Development Association (CDA) — Elongation: 20 % (TYPICAL)Section Size: 0.25; Cold Work: 16%; Section Size: 0.25 inCopper Development Association (CDA) — | 0.25 | 310.3 MPa | 275.8 MPa | 20 % | — | — | — | VERIFIED |
| Rod | Hard (H04)Source values and qualifiersRockwell B Hardness: 47 HRB (TYPICAL)Section Size: 0.25; Cold Work: 35%; Section Size: 0.25 inCopper Development Association (CDA) — Rockwell F Hardness: 87 HRF (TYPICAL)Section Size: 0.25; Cold Work: 35%; Section Size: 0.25 inCopper Development Association (CDA) — Rockwell B Hardness: 60 HRB (TYPICAL)Section Size: 0.25; Cold Work: 40%; Section Size: 0.25 inCopper Development Association (CDA) — Rockwell F Hardness: 94 HRF (TYPICAL)Section Size: 0.25; Cold Work: 40%; Section Size: 0.25 inCopper Development Association (CDA) — Rockwell B Hardness: 45 HRB (TYPICAL)Section Size: 0.25; Cold Work: 16%; Section Size: 0.25 inCopper Development Association (CDA) — Rockwell F Hardness: 85 HRF (TYPICAL)Section Size: 0.25; Cold Work: 16%; Section Size: 0.25 inCopper Development Association (CDA) — | 0.25 | — | — | — | — | — | 47 HRB87 HRF60 HRB94 HRF45 HRB85 HRF | VERIFIED |
| Shapes | Hard (H04) · 20 °CSource values and qualifiersTensile Strength: 275.8 MPa (TYPICAL)Section Size: 0.5; Cold Work: 15%; Section Size: 0.5 inCopper Development Association (CDA) — Yield Strength (0.5% Ext): 220.6 MPa (TYPICAL)Section Size: 0.5; Cold Work: 15%; Section Size: 0.5 in; Yield strength at 0.5% extension under loadCopper Development Association (CDA) — Elongation: 30 % (TYPICAL)Section Size: 0.5; Cold Work: 15%; Section Size: 0.5 inCopper Development Association (CDA) — | 0.5 | 275.8 MPa | 220.6 MPa | 30 % | — | — | — | VERIFIED |
| Shapes | Hard (H04)Source values and qualifiersRockwell B Hardness: 35 HRB (TYPICAL)Section Size: 0.5; Cold Work: 15%; Section Size: 0.5 inCopper Development Association (CDA) — Shear Strength: 179.3 MPa (TYPICAL)Section Size: 0.5; Cold Work: 15%; Section Size: 0.5 inCopper Development Association (CDA) — | 0.5 | — | — | — | 179.3 MPa | — | 35 HRB | VERIFIED |
| Shapes | Nominal Grain Size 0.050 mm (OS050) · 20 °CSource values and qualifiersTensile Strength: 220.6 MPa (TYPICAL)Section Size: 0.5; Section Size: 0.5 inCopper Development Association (CDA) — Yield Strength (0.5% Ext): 68.9 MPa (TYPICAL)Section Size: 0.5; Section Size: 0.5 in; Yield strength at 0.5% extension under loadCopper Development Association (CDA) — Elongation: 50 % (TYPICAL)Section Size: 0.5; Section Size: 0.5 inCopper Development Association (CDA) — | 0.5 | 220.6 MPa | 68.9 MPa | 50 % | — | — | — | VERIFIED |
| Shapes | Nominal Grain Size 0.050 mm (OS050)Source values and qualifiersRockwell F Hardness: 40 HRF (TYPICAL)Section Size: 0.5; Section Size: 0.5 inCopper Development Association (CDA) — Shear Strength: 151.7 MPa (TYPICAL)Section Size: 0.5; Section Size: 0.5 inCopper Development Association (CDA) — | 0.5 | — | — | — | 151.7 MPa | — | 40 HRF | VERIFIED |
| Tube | Hard Drawn (H80) · 20 °CSource values and qualifiersTensile Strength: 379.2 MPa (TYPICAL)Section Size: 0.065; Cold Work: 40%; Section Size: 0.065 inCopper Development Association (CDA) — Yield Strength (0.5% Ext): 344.7 MPa (TYPICAL)Section Size: 0.065; Cold Work: 40%; Section Size: 0.065 in; Yield strength at 0.5% extension under loadCopper Development Association (CDA) — Elongation: 8 % (TYPICAL)Section Size: 0.065; Cold Work: 40%; Section Size: 0.065 inCopper Development Association (CDA) — | 0.065 | 379.2 MPa | 344.7 MPa | 8 % | — | — | — | VERIFIED |
| Tube | Hard Drawn (H80)Source values and qualifiersRockwell B Hardness: 60 HRB (TYPICAL)Section Size: 0.065; Cold Work: 40%; Section Size: 0.065 inCopper Development Association (CDA) — Rockwell F Hardness: 95 HRF (TYPICAL)Section Size: 0.065; Cold Work: 40%; Section Size: 0.065 inCopper Development Association (CDA) — Rockwell 30T Hardness: 63 HR30T (TYPICAL)Section Size: 0.065; Cold Work: 40%; Section Size: 0.065 inCopper Development Association (CDA) — Shear Strength: 199.9 MPa (TYPICAL)Section Size: 0.065; Cold Work: 40%; Section Size: 0.065 inCopper Development Association (CDA) — | 0.065 | — | — | — | 199.9 MPa | — | 60 HRB95 HRF63 HR30T | VERIFIED |
| Tube | Hard Drawn (H80) · 20 °CSource values and qualifiersTensile Strength: 379.2 MPa (TYPICAL)Section Size: 0.20; Cold Work: 40%; Section Size: 0.20 inCopper Development Association (CDA) — Yield Strength (0.5% Ext): 344.7 MPa (TYPICAL)Section Size: 0.20; Cold Work: 40%; Section Size: 0.20 in; Yield strength at 0.5% extension under loadCopper Development Association (CDA) — Elongation: 20 % (TYPICAL)Section Size: 0.20; Cold Work: 40%; Section Size: 0.20 inCopper Development Association (CDA) — | 0.20 | 379.2 MPa | 344.7 MPa | 20 % | — | — | — | VERIFIED |
| Tube | Light Drawn, Light Cold Rolled (H55) · 20 °CSource values and qualifiersTensile Strength: 275.8 MPa (TYPICAL)Section Size: 0.065; Cold Work: 15%; Section Size: 0.065 inCopper Development Association (CDA) — Yield Strength (0.5% Ext): 220.6 MPa (TYPICAL)Section Size: 0.065; Cold Work: 15%; Section Size: 0.065 in; Yield strength at 0.5% extension under loadCopper Development Association (CDA) — Elongation: 25 % (TYPICAL)Section Size: 0.065; Cold Work: 15%; Section Size: 0.065 inCopper Development Association (CDA) — | 0.065 | 275.8 MPa | 220.6 MPa | 25 % | — | — | — | VERIFIED |
| Tube | Light Drawn, Light Cold Rolled (H55)Source values and qualifiersRockwell B Hardness: 35 HRB (TYPICAL)Section Size: 0.065; Cold Work: 15%; Section Size: 0.065 inCopper Development Association (CDA) — Rockwell F Hardness: 77 HRF (TYPICAL)Section Size: 0.065; Cold Work: 15%; Section Size: 0.065 inCopper Development Association (CDA) — Rockwell 30T Hardness: 45 HR30T (TYPICAL)Section Size: 0.065; Cold Work: 15%; Section Size: 0.065 inCopper Development Association (CDA) — Shear Strength: 179.3 MPa (TYPICAL)Section Size: 0.065; Cold Work: 15%; Section Size: 0.065 inCopper Development Association (CDA) — | 0.065 | — | — | — | 179.3 MPa | — | 35 HRB77 HRF45 HR30T | VERIFIED |
| Tube | Nominal Grain Size 0.025 mm (OS025) · 20 °CSource values and qualifiersTensile Strength: 234.4 MPa (TYPICAL)Section Size: 0.065; Section Size: 0.065 inCopper Development Association (CDA) — Yield Strength (0.5% Ext): 75.8 MPa (TYPICAL)Section Size: 0.065; Section Size: 0.065 in; Yield strength at 0.5% extension under loadCopper Development Association (CDA) — Elongation: 45 % (TYPICAL)Section Size: 0.065; Section Size: 0.065 inCopper Development Association (CDA) — | 0.065 | 234.4 MPa | 75.8 MPa | 45 % | — | — | — | VERIFIED |
| Tube | Nominal Grain Size 0.025 mm (OS025)Source values and qualifiersRockwell F Hardness: 45 HRF (TYPICAL)Section Size: 0.065; Section Size: 0.065 inCopper Development Association (CDA) — Shear Strength: 158.6 MPa (TYPICAL)Section Size: 0.065; Section Size: 0.065 inCopper Development Association (CDA) — | 0.065 | — | — | — | 158.6 MPa | — | 45 HRF | VERIFIED |
| Tube | Nominal Grain Size 0.050 mm (OS050) · 20 °CSource values and qualifiersTensile Strength: 220.6 MPa (TYPICAL)Section Size: 0.065; Section Size: 0.065 inCopper Development Association (CDA) — Yield Strength (0.5% Ext): 68.9 MPa (TYPICAL)Section Size: 0.065; Section Size: 0.065 in; Yield strength at 0.5% extension under loadCopper Development Association (CDA) — Elongation: 45 % (TYPICAL)Section Size: 0.065; Section Size: 0.065 inCopper Development Association (CDA) — | 0.065 | 220.6 MPa | 68.9 MPa | 45 % | — | — | — | VERIFIED |
| Tube | Nominal Grain Size 0.050 mm (OS050)Source values and qualifiersRockwell F Hardness: 40 HRF (TYPICAL)Section Size: 0.065; Section Size: 0.065 inCopper Development Association (CDA) — Shear Strength: 151.7 MPa (TYPICAL)Section Size: 0.065; Section Size: 0.065 inCopper Development Association (CDA) — | 0.065 | — | — | — | 151.7 MPa | — | 40 HRF | VERIFIED |
Hardness Integrity Notice: Rockwell B (HRB), Rockwell F (HRF), and Superficial 30T (HR30T) scales are reported on their measured scales without cross-scale mathematical conversion.
Source: See fact-level citations
Processing & Fabrication Characteristics
Machining, joining, forming, and thermal processing ratings cataloged from the cited authoritative technical reference.
Machinability
Machinability rating: 20% relative to free-cutting brass (C36000 = 100%). Forgeability rating: 65.
Weldability & Joining
Soldering: Excellent; Brazing: Excellent; Oxyacetylene Welding: Fair; Gas Shielded Arc Welding: Excellent; Coated Metal Arc Welding: Not Recommended; Spot Weld: Not Recommended; Seam Weld: Not Recommended; Butt Weld: Good
Heat Treatment & Working Ranges
Annealing temperature range: 371.1°C to 648.9°C (700°F - 1200°F). Hot working temperature range: 760.0°C to 871.1°C (1400°F - 1600°F).
Forming & Cold Working
Capacity for Being Cold Worked: Excellent. Capacity for Being Hot Formed: Excellent.
Comparable Grades & Cross-References
Carefully classified cross-reference relationships for C10300 Oxygen-Free Extra Low Phosphorus (OFXLP) Copper. Comparable does not mean equivalent.
| Related Material | Family | Relationship Classification | Metallurgical Notes & Differences | Status | Action |
|---|---|---|---|---|---|
| C10200 Oxygen-Free (OF) Copper | Copper Alloys | Nearest Alternative | C10300 (OFXLP) contains 0.001-0.005% P deoxidizer, retaining 99% IACS conductivity with complete immunity to hydrogen embrittlement. C10200 is unalloyed oxygen-free copper (100% IACS) without phosphorus.Design parameters (weldability, hardenability, fatigue limit) must be re-evaluated for the specific application. | VERIFIED | Side-by-Side Compare → |
| C12000 DLP Copper | Copper Alloys | Nearest Alternative | C10300 has extra low phosphorus (0.001-0.005%) for 99% IACS conductivity, whereas C12000 has 0.004-0.012% P for 98% IACS conductivity.Design parameters (weldability, hardenability, fatigue limit) must be re-evaluated for the specific application. | VERIFIED | Side-by-Side Compare → |
| C11000 ETP Copper | Copper Alloys | Nearest Alternative | C10300 is deoxidized with phosphorus, enabling reliable brazing in reducing atmospheres without hydrogen embrittlement, at 99% IACS conductivity vs 101% for C11000.Design parameters (weldability, hardenability, fatigue limit) must be re-evaluated for the specific application. | VERIFIED | Side-by-Side Compare → |
Sources & Provenance Trail
Reference publications and standards organization registers cited across this material record.
Copper Development Association Inc.CDA Alloy C10300 Property & Specification Profile
AUTHORITATIVE BODY
Copper Development Association authoritative technical reference profile for C10300 Oxygen-Free Extra Low Phosphorus (OFXLP) Copper.
Issuing Body: Copper Development Association (CDA)View Source Record ↗
Copper Development Association Inc.CDA UNS Standard Designations Register (C10300)
AUTHORITATIVE BODY
Unified Numbering System (UNS) designation registration register confirming active C10300 status.
Issuing Body: Copper Development Association (CDA)View Source Record ↗
Intellectual Property & Provenance Notice: Mat Grades cites technical literature from recognized industry associations and standards organizations. Underlying technical standards and publication data remain the intellectual property of their respective issuing organizations.