C36000 Free-Cutting Brass
Primary Designation:UNS C36000
Aliases:
Free-Cutting BrassFree-Machining BrassHigh-Speed BrassC36000
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:4 composition elements and 97 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
8.498 g/cm³TYPICAL · at 20 °C
Electrical Conductivity
26 % IACSTYPICAL · at 20 °C
Thermal Conductivity
115.96 W/(m·K)TYPICAL · at 20 °C
Specific Heat Capacity
376.8 J/(kg·K)TYPICAL · at 20 °C
Melting Range (Solidus / Liquidus)
887.8 – 898.9 °C1630.0 – 1650.0 °F
Solidus: 887.8°C | Liquidus: 898.9°CComposition Excerpt
Cu 60–63 wt%Copper (range)
Standard Elemental Basis: RANGEEngineering Summary
UNS C36000 Free-Cutting Brass (61.5Cu-35.5Zn-3Pb) defines the global benchmark 100% standard against which all copper alloy machinability is measured. Highly dispersed microscopic lead globules act as natural internal chip-breakers and tool lubricants, enabling high feed rates, clean thread cutting, and exceptional tool life in high-speed automatic screw machines.
Documented Product Applications (Cited CDA Reference Profile)
- ›Adapters: Machining Characteristics
- ›Adapters: Mechanical Properties
- ›Adapters: Solderability
- ›Architecture: Terrazzo Strip
- ›Automatic Screw Machine Parts: Corrosion Resistance
- ›Automatic Screw Machine Parts: Machining Characteristics
- ›Automatic Screw Machine Parts: Mechanical Properties
- ›Automotive: Fluid Connectors
- ›Bolts: Machining Characteristics
- ›Bolts: Mechanical Properties
- ›Builders Hardware: Fittings
- ›Consumer: Hot Combs (to Straighten Hair)
Recognized Aliases
Source-backed commercial trade name and short designations cataloged in canonical data.
Free-Cutting BrassFree-Machining BrassHigh-Speed BrassC36000
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 | C36000 | Unified Numbering System | Unified Numbering System standard designation for copper alloys (CDA / SAE / ASTM)Ref: CDA UNS Standard Designations Register (C36000) |
| CDA | Alloy 360 | Copper Development Association Alloy Number | CDA three-digit legacy designationRef: CDA UNS Standard Designations Register (C36000) |
Recognized Commercial Aliases & Trade NamesCOMMON ALIAS
4 Listed| Recognized Name / Alias | Classification | Technical Usage & Context |
|---|---|---|
| Free-Cutting Brass | Standard Commercial Name | CDA Standard Commercial Name |
| Free-Machining Brass | Commercial Alias | Colloquial or commercial industry synonym |
| High-Speed Brass | Commercial Alias | Colloquial or commercial industry synonym |
| C36000 | Commercial Alias | Colloquial or commercial industry synonym |
Applicable Specifications & Product Form ReferencesSPECIFICATION REFERENCE
5 Applicable Standards| Standards Body | Specification Code | Specification Title / Scope | Relationship Type |
|---|---|---|---|
| SAE | SAE J461 | WROUGHT AND CAST COPPER ALLOYS | Specification Reference |
| AMS | AMS 4610 | BRASS BARS AND RODS, FREE CUTTING, HALF-HARD | Specification Reference |
| SAE | SAE J463 | WROUGHT COPPER AND COPPER ALLOYS | Specification Reference |
| ASTM | ASTM B16/B16M | FREE-CUTTING BRASS ROD, BAR AND SHAPES FOR USE IN SCREW MACHINES | Specification Reference |
| MILITARY | MILITARY MIL-V-18436 | VALVES, CHECK, BRONZE | 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 | RANGE | 60.00 – 63.00 | wt% | CDA chemical composition specification limits for C36000: 60.0 - 63.0 wt%.Ref: Copper Development Association (CDA) | VERIFIED |
| Lead | Pb | 82 | RANGE | 2.50 – 3.00 | wt% | CDA chemical composition specification limits for C36000: 2.5 - 3.0 wt%.Ref: Copper Development Association (CDA) | VERIFIED |
| Zinc | Zn | 30 | BALANCE | Balance | wt% | Remainder element (Zinc).Ref: Copper Development Association (CDA) | VERIFIED |
| Iron | Fe | 26 | MAXIMUM | ≤ 0.35 | wt% | CDA chemical composition specification limits for C36000: max 0.35 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 | 8.498 g/cm³ | TYPICAL | Test Temp: 20 °CCDA Physical Properties: Density 0.307 lb/cu in. at 68°F (8.498 g/cm³ at 20°C) | 0.307 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 | 898.9 °C | TYPICAL | CDA Physical Properties: Liquidus temperature 1650.0 °F (898.9 °C) | 1650.0 °F | Copper Development Association Inc. | VERIFIED |
| Solidus Temperature | 887.8 °C | TYPICAL | CDA Physical Properties: Solidus temperature 1630.0 °F (887.8 °C) | 1630.0 °F | Copper Development Association Inc. | VERIFIED |
| Thermal Conductivity | 115.96 W/(m·K) | TYPICAL | Test Temp: 20 °CCDA Physical Properties: Thermal conductivity 67.0 Btu/(ft·hr·°F) (115.96 W/(m·K) at 20°C) | 67.0 Btu/ sq ft/ ft hr/ °F at 68°F | Copper Development Association Inc. | VERIFIED |
| Coefficient of Thermal Expansion (CTE) | 20.52 µm/(m·K) | TYPICAL | CDA Physical Properties: CTE 11.4 µin/(in·°F) (20.52 µm/(m·K)) over range 68-57210°F | 11.4 10^-6 per °F | Copper Development Association Inc. | VERIFIED |
| Specific Heat Capacity | 376.8 J/(kg·K) | TYPICAL | Test Temp: 20 °CCDA Physical Properties: Specific heat 0.09 Btu/(lb·°F) (376.8 J/(kg·K)) | 0.09 Btu/ lb /°F at 68°F | Copper Development Association Inc. | VERIFIED |
| Annealing Temperature Range | 426.7 – 593.3 °C | RANGE | CDA Thermal Treatments: Annealing temperature range 800 - 1100°F (426.7 - 593.3°C) | 800 – 1100 °F | Copper Development Association Inc. | VERIFIED |
| Hot Working Temperature Range | 704.4 – 787.8 °C | RANGE | CDA Thermal Treatments: Hot working range 1300 - 1450°F (704.4 - 787.8°C) | 1300 – 1450 °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 | 26 % IACS | TYPICAL | Test Temp: 20 °CCDA Physical Properties: Volume conductivity 26.0 % IACS at 68°F (20°C) | 26.0 % 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)
96.5 GPa
CDA Physical Properties: Elastic modulus in tension 14000.0 ksi (96.5 GPa)Modulus of Rigidity
36542.2 MPa
CDA Physical Properties: Shear modulus 5300.0 ksi (36542.2 MPa)Machinability Rating
100 %
CDA Fabrication Properties: Rating relative to Free-Cutting Brass (C36000 = 100%).Showing 39 of 39 conditions
| Product Form | Temper / Condition | Section Size | Tensile (UTS) | Yield Strength | Elongation | Shear Strength | Fatigue Strength | Hardness (Scales Preserved) | Status |
|---|---|---|---|---|---|---|---|---|---|
| Bar | 1/2 Hard (H02) · 20 °CSource values and qualifiersTensile Strength: 310.3 MPa (TYPICAL)Section Size: 1.5; Section Size: 1.5 inCopper Development Association (CDA) — Yield Strength (0.5% Ext): 117.2 MPa (TYPICAL)Section Size: 1.5; Section Size: 1.5 in; Yield strength at 0.5% extension under loadCopper Development Association (CDA) — Elongation: 15 % (TYPICAL)Section Size: 1.5; Section Size: 1.5 inCopper Development Association (CDA) — Tensile Strength: 275.8 MPa (TYPICAL)Section Size: 1.5; Section Size: 1.5 inCopper Development Association (CDA) — Elongation: 20 % (TYPICAL)Section Size: 1.5; Section Size: 1.5 inCopper Development Association (CDA) — | 1.5 | 275.8 MPa | 117.2 MPa | 20 % | — | — | — | VERIFIED |
| Bar | 1/2 Hard (H02)Source values and qualifiersRockwell B Hardness: 60 HRB (TYPICAL)Section Size: 1.5; Section Size: 1.5 inCopper Development Association (CDA) — | 1.5 | — | — | — | — | — | 60 HRB | VERIFIED |
| Bar | 1/2 Hard (H02) · 20 °CSource values and qualifiersTensile Strength: 275.8 MPa (TYPICAL)Section Size: 3; Section Size: 3 inCopper Development Association (CDA) — Elongation: 20 % (TYPICAL)Section Size: 3; Section Size: 3 inCopper Development Association (CDA) — | 3 | 275.8 MPa | — | 20 % | — | — | — | VERIFIED |
| Bar | 1/2 Hard (H02) · 20 °CSource values and qualifiersTensile Strength: 344.7 MPa (TYPICAL)Section Size: <0.50; Section Size: <0.50 inCopper Development Association (CDA) — Elongation: 10 % (TYPICAL)Section Size: <0.50; Section Size: <0.50 inCopper Development Association (CDA) — Tensile Strength: 310.3 MPa (TYPICAL)Section Size: <0.50; Section Size: <0.50 inCopper Development Association (CDA) — Elongation: 15 % (TYPICAL)Section Size: <0.50; Section Size: <0.50 inCopper Development Association (CDA) — | <0.50 | 310.3 MPa | — | 15 % | — | — | — | VERIFIED |
| Bar | 1/2 Hard (H02)Source values and qualifiersRockwell B Hardness: 65 HRB (TYPICAL)Section Size: <0.50; Section Size: <0.50 inCopper Development Association (CDA) — | <0.50 | — | — | — | — | — | 65 HRB | VERIFIED |
| Bar | Soft Anneal (O60) · 20 °CSource values and qualifiersTensile Strength: 303.4 MPa (TYPICAL)Section Size: <1; Section Size: <1 inCopper Development Association (CDA) — Elongation: 20 % (TYPICAL)Section Size: <1; Section Size: <1 inCopper Development Association (CDA) — | <1 | 303.4 MPa | — | 20 % | — | — | — | VERIFIED |
| Bar | Soft Anneal (O60) · 20 °CSource values and qualifiersTensile Strength: 275.8 MPa (TYPICAL)Section Size: 1.5; Section Size: 1.5 inCopper Development Association (CDA) — Elongation: 25 % (TYPICAL)Section Size: 1.5; Section Size: 1.5 inCopper Development Association (CDA) — | 1.5 | 275.8 MPa | — | 25 % | — | — | — | VERIFIED |
| Bar | Soft Anneal (O60)Source values and qualifiersRockwell B Hardness: 22 HRB (TYPICAL)Section Size: 1.5; Section Size: 1.5 inCopper Development Association (CDA) — | 1.5 | — | — | — | — | — | 22 HRB | VERIFIED |
| Flat Products | 1/2 Hard (H02) · 20 °CSource values and qualifiersTensile Strength: 386.1 MPa (TYPICAL)Section Size: 0.25; Cold Work: 11%; Section Size: 0.25 inCopper Development Association (CDA) — Elongation: 20 % (TYPICAL)Section Size: 0.25; Cold Work: 11%; Section Size: 0.25 inCopper Development Association (CDA) — | 0.25 | 386.1 MPa | — | 20 % | — | — | — | VERIFIED |
| Flat Products | 1/2 Hard (H02)Source values and qualifiersRockwell B Hardness: 62 HRB (TYPICAL)Section Size: 0.25; Cold Work: 11%; Section Size: 0.25 inCopper Development Association (CDA) — Shear Strength: 227.5 MPa (TYPICAL)Section Size: 0.25; Cold Work: 11%; Section Size: 0.25 inCopper Development Association (CDA) — | 0.25 | — | — | — | 227.5 MPa | — | 62 HRB | VERIFIED |
| Rod | 1/2 Hard (H02) · 20 °CSource values and qualifiersTensile Strength: 393 MPa (TYPICAL)Section Size: <0.50; Section Size: <0.50 inCopper Development Association (CDA) — Yield Strength (0.5% Ext): 172.4 MPa (TYPICAL)Section Size: <0.50; Section Size: <0.50 in; Yield strength at 0.5% extension under loadCopper Development Association (CDA) — Elongation: 7 % (TYPICAL)Section Size: <0.50; Section Size: <0.50 inCopper Development Association (CDA) — | <0.50 | 393 MPa | 172.4 MPa | 7 % | — | — | — | VERIFIED |
| Rod | 1/2 Hard (H02)Source values and qualifiersRockwell B Hardness: 65 HRB (TYPICAL)Section Size: <0.50; Section Size: <0.50 inCopper Development Association (CDA) — Shear Strength: 220.6 MPa (TYPICAL)Section Size: <0.50; Section Size: <0.50 inCopper Development Association (CDA) — Fatigue Strength: 137.9 MPa (TYPICAL)Section Size: <0.50; Section Size: <0.50 in; 10^8 cycles endurance limitCopper Development Association (CDA) — | <0.50 | — | — | — | 220.6 MPa | 137.9 MPa | 65 HRB | VERIFIED |
| Rod | 1/2 Hard (H02) · 20 °CSource values and qualifiersTensile Strength: 344.7 MPa (TYPICAL)Section Size: 1.5; Section Size: 1.5 inCopper Development Association (CDA) — Elongation: 15 % (TYPICAL)Section Size: 1.5; Section Size: 1.5 inCopper Development Association (CDA) — | 1.5 | 344.7 MPa | — | 15 % | — | — | — | VERIFIED |
| Rod | 1/2 Hard (H02)Source values and qualifiersRockwell B Hardness: 65 HRB (TYPICAL)Section Size: 1.5; Section Size: 1.5 inCopper Development Association (CDA) — | 1.5 | — | — | — | — | — | 65 HRB | VERIFIED |
| Rod | 1/2 Hard (H02) · 20 °CSource values and qualifiersTensile Strength: 310.3 MPa (TYPICAL)Section Size: 3.0; Section Size: 3.0 inCopper Development Association (CDA) — Elongation: 20 % (TYPICAL)Section Size: 3.0; Section Size: 3.0 inCopper Development Association (CDA) — | 3.0 | 310.3 MPa | — | 20 % | — | — | — | VERIFIED |
| Rod | 1/2 Hard (H02)Source values and qualifiersRockwell B Hardness: 55 HRB (TYPICAL)Section Size: 3.0; Section Size: 3.0 inCopper Development Association (CDA) — | 3.0 | — | — | — | — | — | 55 HRB | VERIFIED |
| Rod | 1/2 Hard (H02) · 20 °CSource values and qualifiersTensile Strength: 275.8 MPa (TYPICAL)Section Size: 4.5; Section Size: 4.5 inCopper Development Association (CDA) — Elongation: 20 % (TYPICAL)Section Size: 4.5; Section Size: 4.5 inCopper Development Association (CDA) — | 4.5 | 275.8 MPa | — | 20 % | — | — | — | VERIFIED |
| Rod | 1/2 Hard (H02)Source values and qualifiersRockwell B Hardness: 25 HRB (TYPICAL)Section Size: 4.5; Section Size: 4.5 inCopper Development Association (CDA) — | 4.5 | — | — | — | — | — | 25 HRB | VERIFIED |
| Rod | 1/2 Hard (H02) · 20 °CSource values and qualifiersTensile Strength: 379.2 MPa (TYPICAL)Section Size: 0.75; Section Size: 0.75 inCopper Development Association (CDA) — Elongation: 10 % (TYPICAL)Section Size: 0.75; Section Size: 0.75 inCopper Development Association (CDA) — | 0.75 | 379.2 MPa | — | 10 % | — | — | — | VERIFIED |
| Rod | 1/2 Hard (H02)Source values and qualifiersRockwell B Hardness: 70 HRB (TYPICAL)Section Size: 0.75; Section Size: 0.75 inCopper Development Association (CDA) — Shear Strength: 234.4 MPa (TYPICAL)Section Size: 0.75; Section Size: 0.75 inCopper Development Association (CDA) — | 0.75 | — | — | — | 234.4 MPa | — | 70 HRB | VERIFIED |
| Rod | 1/2 Hard (H02) · 20 °CSource values and qualifiersTensile Strength: 399.9 MPa (TYPICAL)Section Size: 1; Cold Work: 20%; Section Size: 1 inCopper Development Association (CDA) — Yield Strength (0.5% Ext): 310.3 MPa (TYPICAL)Section Size: 1; Cold Work: 20%; Section Size: 1 in; Yield strength at 0.5% extension under loadCopper Development Association (CDA) — Elongation: 25 % (TYPICAL)Section Size: 1; Cold Work: 20%; Section Size: 1 inCopper Development Association (CDA) — | 1 | 399.9 MPa | 310.3 MPa | 25 % | — | — | — | VERIFIED |
| Rod | 1/2 Hard (H02) · 20 °CSource values and qualifiersTensile Strength: 379.2 MPa (TYPICAL)Section Size: 2; Cold Work: 18%; Section Size: 2 inCopper Development Association (CDA) — Yield Strength (0.5% Ext): 303.4 MPa (TYPICAL)Section Size: 2; Cold Work: 18%; Section Size: 2 in; Yield strength at 0.5% extension under loadCopper Development Association (CDA) — Elongation: 32 % (TYPICAL)Section Size: 2; Cold Work: 18%; Section Size: 2 inCopper Development Association (CDA) — | 2 | 379.2 MPa | 303.4 MPa | 32 % | — | — | — | VERIFIED |
| Rod | 1/2 Hard (H02) · 20 °CSource values and qualifiersTensile Strength: 468.8 MPa (TYPICAL)Section Size: 0.24; Cold Work: 25%; Section Size: 0.24 inCopper Development Association (CDA) — Yield Strength (0.5% Ext): 358.5 MPa (TYPICAL)Section Size: 0.24; Cold Work: 25%; Section Size: 0.24 in; Yield strength at 0.5% extension under loadCopper Development Association (CDA) — Elongation: 18 % (TYPICAL)Section Size: 0.24; Cold Work: 25%; Section Size: 0.24 inCopper Development Association (CDA) — | 0.24 | 468.8 MPa | 358.5 MPa | 18 % | — | — | — | VERIFIED |
| Rod | Annealed (O61) · 20 °CSource values and qualifiersTensile Strength: 337.8 MPa (TYPICAL)Section Size: 1; Section Size: 1 inCopper Development Association (CDA) — Yield Strength (0.5% Ext): 124.1 MPa (TYPICAL)Section Size: 1; Section Size: 1 in; Yield strength at 0.5% extension under loadCopper Development Association (CDA) — Elongation: 53 % (TYPICAL)Section Size: 1; Section Size: 1 inCopper Development Association (CDA) — | 1 | 337.8 MPa | 124.1 MPa | 53 % | — | — | — | VERIFIED |
| Rod | Hard (H04) · 20 °CSource values and qualifiersTensile Strength: 448.2 MPa (TYPICAL)Section Size: 0.625; Section Size: 0.625 inCopper Development Association (CDA) — Elongation: 6 % (TYPICAL)Section Size: 0.625; Section Size: 0.625 inCopper Development Association (CDA) — | 0.625 | 448.2 MPa | — | 6 % | — | — | — | VERIFIED |
| Rod | Hard (H04) · 20 °CSource values and qualifiersTensile Strength: 482.6 MPa (TYPICAL)Section Size: 0.375; Section Size: 0.375 inCopper Development Association (CDA) — Elongation: 4 % (TYPICAL)Section Size: 0.375; Section Size: 0.375 inCopper Development Association (CDA) — | 0.375 | 482.6 MPa | — | 4 % | — | — | — | VERIFIED |
| Rod | Hard (H04)Source values and qualifiersRockwell B Hardness: 78 HRB (TYPICAL)Section Size: 0.375; Section Size: 0.375 inCopper Development Association (CDA) — Shear Strength: 234.4 MPa (TYPICAL)Section Size: 0.375; Section Size: 0.375 inCopper Development Association (CDA) — | 0.375 | — | — | — | 234.4 MPa | — | 78 HRB | VERIFIED |
| Rod | Hard (H04) · 20 °CSource values and qualifiersTensile Strength: 551.6 MPa (TYPICAL)Section Size: 0.25; Section Size: 0.25 inCopper Development Association (CDA) — | 0.25 | 551.6 MPa | — | — | — | — | — | VERIFIED |
| Rod | Hard (H04)Source values and qualifiersRockwell B Hardness: 80 HRB (TYPICAL)Section Size: 0.25; Section Size: 0.25 inCopper Development Association (CDA) — Shear Strength: 262 MPa (TYPICAL)Section Size: 0.25; Section Size: 0.25 inCopper Development Association (CDA) — | 0.25 | — | — | — | 262 MPa | — | 80 HRB | VERIFIED |
| Rod | Soft Anneal (O60) · 20 °CSource values and qualifiersTensile Strength: 330.9 MPa (TYPICAL)Section Size: <1; Section Size: <1 inCopper Development Association (CDA) — Elongation: 15 % (TYPICAL)Section Size: <1; Section Size: <1 inCopper Development Association (CDA) — | <1 | 330.9 MPa | — | 15 % | — | — | — | VERIFIED |
| Rod | Soft Anneal (O60)Source values and qualifiersRockwell B Hardness: 28 HRB (TYPICAL)Section Size: <1; Section Size: <1 inCopper Development Association (CDA) — Shear Strength: 206.8 MPa (TYPICAL)Section Size: <1; Section Size: <1 inCopper Development Association (CDA) — | <1 | — | — | — | 206.8 MPa | — | 28 HRB | VERIFIED |
| Rod | Soft Anneal (O60) · 20 °CSource values and qualifiersTensile Strength: 303.4 MPa (TYPICAL)Section Size: 1.5; Section Size: 1.5 inCopper Development Association (CDA) — Elongation: 20 % (TYPICAL)Section Size: 1.5; Section Size: 1.5 inCopper Development Association (CDA) — | 1.5 | 303.4 MPa | — | 20 % | — | — | — | VERIFIED |
| Rod | Soft Anneal (O60) · 20 °CSource values and qualifiersTensile Strength: 275.8 MPa (TYPICAL)Section Size: 2.5; Section Size: 2.5 inCopper Development Association (CDA) — Elongation: 25 % (TYPICAL)Section Size: 2.5; Section Size: 2.5 inCopper Development Association (CDA) — | 2.5 | 275.8 MPa | — | 25 % | — | — | — | VERIFIED |
| Shapes | 1/4 Hard (H01) · 20 °CSource values and qualifiersTensile Strength: 386.1 MPa (TYPICAL)Section Size: 0.5; Cold Work: 11%; Section Size: 0.5 inCopper Development Association (CDA) — Elongation: 20 % (TYPICAL)Section Size: 0.5; Cold Work: 11%; Section Size: 0.5 inCopper Development Association (CDA) — | 0.5 | 386.1 MPa | — | 20 % | — | — | — | VERIFIED |
| Shapes | 1/4 Hard (H01)Source values and qualifiersRockwell B Hardness: 62 HRB (TYPICAL)Section Size: 0.5; Cold Work: 11%; Section Size: 0.5 inCopper Development Association (CDA) — Shear Strength: 227.5 MPa (TYPICAL)Section Size: 0.5; Cold Work: 11%; Section Size: 0.5 inCopper Development Association (CDA) — | 0.5 | — | — | — | 227.5 MPa | — | 62 HRB | VERIFIED |
| Shapes | 1/4 Hard (H01) · 20 °CSource values and qualifiersTensile Strength: 386.1 MPa (TYPICAL)Cold Work: 15%Copper Development Association (CDA) — Yield Strength (0.5% Ext): 310.3 MPa (TYPICAL)Cold Work: 15%; Yield strength at 0.5% extension under loadCopper Development Association (CDA) — Elongation: 20 % (TYPICAL)Cold Work: 15%Copper Development Association (CDA) — | — | 386.1 MPa | 310.3 MPa | 20 % | — | — | — | VERIFIED |
| Shapes | As Hot Extruded (M30) · 20 °CSource values and qualifiersTensile Strength: 337.8 MPa (TYPICAL)Section Size: 0.5; Section Size: 0.5 inCopper Development Association (CDA) — Yield Strength (0.5% Ext): 124.1 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 | 337.8 MPa | 124.1 MPa | 50 % | — | — | — | VERIFIED |
| Shapes | As Hot Extruded (M30)Source values and qualifiersRockwell F Hardness: 68 HRF (TYPICAL)Section Size: 0.5; Section Size: 0.5 inCopper Development Association (CDA) — Shear Strength: 206.8 MPa (TYPICAL)Section Size: 0.5; Section Size: 0.5 inCopper Development Association (CDA) — | 0.5 | — | — | — | 206.8 MPa | — | 68 HRF | VERIFIED |
| Shapes | As Hot Extruded (M30) · 20 °CSource values and qualifiersTensile Strength: 337.8 MPa (TYPICAL)Copper Development Association (CDA) — Yield Strength (0.5% Ext): 124.1 MPa (TYPICAL)Yield strength at 0.5% extension under loadCopper Development Association (CDA) — Elongation: 50 % (TYPICAL)Copper Development Association (CDA) — | — | 337.8 MPa | 124.1 MPa | 50 % | — | — | — | 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: 100% relative to free-cutting brass (C36000 = 100%).
Weldability & Joining
Soldering: Excellent; Brazing: Good; Oxyacetylene Welding: Not Recommended; Gas Shielded Arc Welding: Not Recommended; Coated Metal Arc Welding: Not Recommended; Spot Weld: Not Recommended; Seam Weld: Not Recommended; Butt Weld: Fair
Heat Treatment & Working Ranges
Annealing temperature range: 426.7°C to 593.3°C (800°F - 1100°F). Hot working temperature range: 704.4°C to 787.8°C (1300°F - 1450°F).
Forming & Cold Working
Capacity for Being Cold Worked: Fair. Capacity for Being Hot Formed: Fair.
Comparable Grades & Cross-References
Carefully classified cross-reference relationships for C36000 Free-Cutting Brass. Comparable does not mean equivalent.
| Related Material | Family | Relationship Classification | Metallurgical Notes & Differences | Status | Action |
|---|---|---|---|---|---|
| C26000 Cartridge Brass 70/30 | Copper Alloys | Commonly Compared | C36000 Free-Cutting Brass contains ~3% lead for optimal 100% machinability rating and chip breaking in turning operations. C26000 Cartridge Brass contains no lead and provides superior cold drawing and stamping capability.Materials serve different design priorities (e.g. higher strength vs superior corrosion resistance or cost). | VERIFIED | Side-by-Side Compare → |
| C46400 Naval Brass | Copper Alloys | Commonly Compared | C36000 is optimized for automated high-speed turning (100% machinability rating), whereas C46400 is optimized for marine corrosion resistance and strength (30% machinability rating).Materials serve different design priorities (e.g. higher strength vs superior corrosion resistance or cost). | VERIFIED | Side-by-Side Compare → |
| C14500 Tellurium Copper | Copper Alloys | Commonly Compared | C36000 provides 100% machinability rating with 28% IACS conductivity, whereas C14500 provides 85% machinability rating with 93% IACS conductivity.Materials serve different design priorities (e.g. higher strength vs superior corrosion resistance or cost). | VERIFIED | Side-by-Side Compare → |
| C11000 ETP Copper | Copper Alloys | Commonly Compared | C36000 is a leaded brass optimized for precision machining (100% rating) with tensile strength 340-470 MPa, whereas C11000 is unalloyed copper providing 101% IACS conductivity but low machinability (20%).Materials serve different design priorities (e.g. higher strength vs superior corrosion resistance or cost). | 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 C36000 Property & Specification Profile
AUTHORITATIVE BODY
Copper Development Association authoritative technical reference profile for C36000 Free-Cutting Brass.
Issuing Body: Copper Development Association (CDA)View Source Record ↗
Copper Development Association Inc.CDA UNS Standard Designations Register (C36000)
AUTHORITATIVE BODY
Unified Numbering System (UNS) designation registration register confirming active C36000 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.