Copper Alloys•Aluminum Bronze•

VERIFIED(Source-Verified)

C61400 Aluminum Bronze D

Primary Designation:UNS C61400

Aliases:

Aluminum Bronze DAlloy DC61400

Mat Grades internal verification confirms source-backed fidelity and data integrity. It does not constitute external certification or guaranteed lot conformity. Read engineering disclaimer →

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Data Completeness:7 composition elements and 82 condition-specific property values cataloged.

Omitted fields represent unverified properties. "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

7.889 g/cm³TYPICAL · at 20 °C

Electrical Conductivity

14 % IACSTYPICAL · at 20 °C

Thermal Conductivity

67.5 W/(m·K)TYPICAL · at 20 °C

Specific Heat Capacity

376.8 J/(kg·K)TYPICAL · at 20 °C

Melting Range (Solidus / Liquidus)

1040.6 – 1046.1 °C1905.0 – 1915.0 °F

Solidus: 1040.6°C | Liquidus: 1046.1°C

Composition Excerpt

Cu BALANCE wt%Copper (balance)

Standard Elemental Basis: BALANCE

Engineering Summary

UNS C61400 Aluminum Bronze D (6.0-8.0% Al, 1.5-3.5% Fe, Cu Remainder) is a single-phase alpha aluminum bronze with iron addition for grain refinement. It exhibits outstanding resistance to non-oxidizing mineral acids, brine, and cavitation fatigue, with excellent weldability under ASME Boiler and Pressure Vessel codes.

C61400 Aluminum Bronze D Documented Applications

›Blending Chambers: Mechanical Properties
›Blending Chambers: Non-Sparking
›Bolts: Corrosion Resistance
›Bolts: Mechanical Properties
›Chutes for Abrasive Grains: Friction & Wear Properties
›Chutes for Abrasive Grains: Mechanical Properties
›Condenser Head Plates: Corrosion Resistance
›Condenser Head Plates: Mechanical Properties
›Condenser Tube and Piping Systems: Corrosion Resistance
›Condenser Tube and Piping Systems: Mechanical Properties
›Condenser Tube and Piping Systems: Welding Characteristics
›Corrosion Resistant Vessels: Corrosion Resistance

Recognized Aliases

Source-backed commercial trade name and short designations cataloged in canonical data.

Aluminum Bronze DAlloy DC61400

C61400 Aluminum Bronze D Specifications & Designations

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

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System	Identifier	Standard System Name	Classification Notes & Provenance
UNSPRIMARY	C61400	Unified Numbering System	Unified Numbering System standard designation for copper alloys (CDA / SAE / ASTM)Ref: CDA UNS Standard Designations Register (C61400)
CDA	Alloy 614	Copper Development Association Alloy Number	CDA three-digit legacy designationRef: CDA UNS Standard Designations Register (C61400)

Recognized Commercial Aliases & Trade NamesCOMMON ALIAS

3 Listed

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Recognized Name / Alias	Classification	Technical Usage & Context
Aluminum Bronze D	Standard Commercial Name	CDA Standard Commercial Name
Alloy D	Commercial Alias	Colloquial or commercial industry synonym
C61400	Commercial Alias	Colloquial or commercial industry synonym

Applicable Specifications & Product Form ReferencesSPECIFICATION REFERENCE

12 Applicable Standards

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Standards Body	Specification Code	Specification Title / Scope	Relationship Type
FEDERAL	FEDERAL QQ-C-450	COPPER-ALUMINUM ALLOY (ALUMINUM BRONZE, PLATE, SHEET, STRIP, AND BAR)	Specification Reference
SAE	SAE J463	WROUGHT COPPER AND COPPER ALLOYS	Specification Reference
SAE	SAE J461	WROUGHT AND CAST COPPER ALLOYS	Specification Reference
ASTM	ASTM F468	NONFERROUS BOLTS, HEX CAP SCREWS, AND STUDS FOR GENERAL USE	Specification Reference
ASTM	ASTM F467	NONFERROUS NUTS FOR GENERAL USE	Specification Reference
ASTM	ASTM B608	WELDED COPPER ALLOY PIPE	Specification Reference
ASTM	ASTM B100	ROLLED COPPER ALLOY BEARING AND EXPANSION PLATES AND SHEETS FOR BRIDGE AND OTHER STRUCTURAL USES	Specification Reference
ASTM	ASTM B432	COPPER AND COPPER ALLOY CLAD STEEL PLATE	Specification Reference
ASTM	ASTM B171/B171M	COPPER ALLOY CONDENSER TUBE PLATES	Specification Reference
ASME	ASME SB171	COPPER ALLOY CONDENSER TUBE PLATES	Specification Reference
ASTM	ASTM B150/B150M	ALUMINUM BRONZE ROD, BAR AND SHAPES	Specification Reference
ASME	ASME SB150	ALUMINUM BRONZE ROD, BAR, AND SHAPES	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.

C61400 Aluminum Bronze D Chemical Composition

Chemical Composition (Weight %) — Elemental limits and values from the cited source. Preserves exact semantic limits (minimums, maximums, and ranges).

Scroll horizontally for full elemental limits

Element	Symbol	Atomic No.	Semantic Basis	Specified Value	Unit	Metallurgical Notes & Qualification	Data Status
Copper	Cu	29	BALANCE	Balance	wt%	Remainder element (Copper).Ref: Copper Development Association (CDA)	VERIFIED
Lead	Pb	82	MAXIMUM	≤ 0.01	wt%	CDA chemical composition specification limits for C61400: max 0.01 wt%.Ref: Copper Development Association (CDA)	VERIFIED
Zinc	Zn	30	MAXIMUM	≤ 0.20	wt%	CDA chemical composition specification limits for C61400: max 0.2 wt%.Ref: Copper Development Association (CDA)	VERIFIED
Iron	Fe	26	RANGE	1.50 – 3.50	wt%	CDA chemical composition specification limits for C61400: 1.5 - 3.5 wt%.Ref: Copper Development Association (CDA)	VERIFIED
Phosphorus	P	15	MAXIMUM	≤ 0.01	wt%	CDA chemical composition specification limits for C61400: max 0.015 wt%.Ref: Copper Development Association (CDA)	VERIFIED
Aluminum	Al	13	RANGE	6.00 – 8.00	wt%	CDA chemical composition specification limits for C61400: 6.0 - 8.0 wt%.Ref: Copper Development Association (CDA)	VERIFIED
Manganese	Mn	25	MAXIMUM	≤ 1.00	wt%	CDA chemical composition specification limits for C61400: max 1.0 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:

C61400 Aluminum Bronze D Physical Properties

Source-specific physical properties. Test temperatures are shown only where reported.

1 Parameters

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Property Parameter	Canonical SI Value	Semantic Basis	Test Temperature / Context Range	Source Raw Reference	Source Reference	Status
Density	7.889 g/cm³	TYPICAL	Test Temp: 20 °CCDA Physical Properties: Density 0.285 lb/cu in. at 68°F (7.889 g/cm³ at 20°C)	0.285 lb/cu in. at 68°F	Copper Development Association Inc.	VERIFIED

C61400 Aluminum Bronze D Thermal & Thermodynamic Properties

Phase change temperatures, thermal conductivity, specific heat, mean coefficients of thermal expansion across standardized temperature ranges, and recommended thermal processing windows.

7 Parameters

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Property Parameter	Canonical SI Value	Semantic Basis	Test Temperature / Context Range	Source Raw Reference	Source Reference	Status
Liquidus Temperature	1046.1 °C	TYPICAL	CDA Physical Properties: Liquidus temperature 1915.0 °F (1046.1 °C)	1915.0 °F	Copper Development Association Inc.	VERIFIED
Solidus Temperature	1040.6 °C	TYPICAL	CDA Physical Properties: Solidus temperature 1905.0 °F (1040.6 °C)	1905.0 °F	Copper Development Association Inc.	VERIFIED
Thermal Conductivity	67.5 W/(m·K)	TYPICAL	Test Temp: 20 °CCDA Physical Properties: Thermal conductivity 39.0 Btu/(ft·hr·°F) (67.5 W/(m·K) at 20°C)	39.0 Btu/ sq ft/ ft hr/ °F at 68°F	Copper Development Association Inc.	VERIFIED
Coefficient of Thermal Expansion (CTE)	16.2 µm/(m·K)	TYPICAL	CDA Physical Properties: CTE 9.0 µin/(in·°F) (16.2 µm/(m·K)) over range 68-57210°F	9.0 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	607.2 – 898.9 °C	RANGE	CDA Thermal Treatments: Annealing temperature range 1125 - 1650°F (607.2 - 898.9°C)	1125 – 1650 °F	Copper Development Association Inc.	VERIFIED
Hot Working Temperature Range	787.8 – 926.7 °C	RANGE	CDA Thermal Treatments: Hot working range 1450 - 1700°F (787.8 - 926.7°C)	1450 – 1700 °F	Copper Development Association Inc.	VERIFIED

C61400 Aluminum Bronze D Electrical Properties

Electrical conductivity and resistivity in their reported units and conditions.

1 Parameters

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Property Parameter	Canonical SI Value	Semantic Basis	Test Temperature / Context Range	Source Raw Reference	Source Reference	Status
Electrical Conductivity	14 % IACS	TYPICAL	Test Temp: 20 °CCDA Physical Properties: Volume conductivity 14.0 % IACS at 68°F (20°C)	14.0 % IACS at 68°F	Copper Development Association Inc.	VERIFIED

C61400 Aluminum Bronze D Mechanical Properties

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%).

Product Form:

Temper / Condition:

Showing 28 of 28 conditions

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Product Form	Temper / Condition	Section Size	Tensile (UTS)	Yield Strength	Elongation	Shear Strength	Fatigue Strength	Hardness (Scales Preserved)	Status
Flat Products	Hard (H04) · 20 °C Source values and qualifiers Tensile Strength: 613.6 MPa (TYPICAL)Section Size: 0.125; Section Size: 0.125 inCopper Development Association (CDA) — Yield Strength (0.5% Ext): 413.7 MPa (TYPICAL)Section Size: 0.125; Section Size: 0.125 in; Yield strength at 0.5% extension under loadCopper Development Association (CDA) — Elongation: 32 % (TYPICAL)Section Size: 0.125; Section Size: 0.125 inCopper Development Association (CDA) — H04	0.125	613.6 MPa	413.7 MPa	32 %	—	—	—	VERIFIED
Flat Products	Hard (H04) Source values and qualifiers Rockwell B Hardness: 87 HRB (TYPICAL)Section Size: 0.125; Section Size: 0.125 inCopper Development Association (CDA) — H04	0.125	—	—	—	—	—	87 HRB	VERIFIED
Flat Products	Hard (H04) · 20 °C Source values and qualifiers Tensile Strength: 586.1 MPa (TYPICAL)Section Size: 0.312; Section Size: 0.312 inCopper Development Association (CDA) — Yield Strength (0.5% Ext): 399.9 MPa (TYPICAL)Section Size: 0.312; Section Size: 0.312 in; Yield strength at 0.5% extension under loadCopper Development Association (CDA) — Elongation: 35 % (TYPICAL)Section Size: 0.312; Section Size: 0.312 inCopper Development Association (CDA) — H04	0.312	586.1 MPa	399.9 MPa	35 %	—	—	—	VERIFIED
Flat Products	Hard (H04) Source values and qualifiers Rockwell B Hardness: 86 HRB (TYPICAL)Section Size: 0.312; Section Size: 0.312 inCopper Development Association (CDA) — H04	0.312	—	—	—	—	—	86 HRB	VERIFIED
Flat Products	Hard (H04) · 20 °C Source values and qualifiers Tensile Strength: 537.8 MPa (TYPICAL)Section Size: 1; Section Size: 1 inCopper Development Association (CDA) — Yield Strength (0.5% Ext): 310.3 MPa (TYPICAL)Section Size: 1; Section Size: 1 in; Yield strength at 0.5% extension under loadCopper Development Association (CDA) — Elongation: 40 % (TYPICAL)Section Size: 1; Section Size: 1 inCopper Development Association (CDA) — H04	1	537.8 MPa	310.3 MPa	40 %	—	—	—	VERIFIED
Flat Products	Hard (H04) Source values and qualifiers Rockwell B Hardness: 84 HRB (TYPICAL)Section Size: 1; Section Size: 1 inCopper Development Association (CDA) — H04	1	—	—	—	—	—	84 HRB	VERIFIED
Flat Products	Hard (H04) · 20 °C Source values and qualifiers Tensile Strength: 551.6 MPa (TYPICAL)Section Size: 0.5; Section Size: 0.5 inCopper Development Association (CDA) — Yield Strength (0.5% Ext): 372.3 MPa (TYPICAL)Section Size: 0.5; Section Size: 0.5 in; Yield strength at 0.5% extension under loadCopper Development Association (CDA) — Elongation: 38 % (TYPICAL)Section Size: 0.5; Section Size: 0.5 inCopper Development Association (CDA) — H04	0.5	551.6 MPa	372.3 MPa	38 %	—	—	—	VERIFIED
Flat Products	Hard (H04) Source values and qualifiers Rockwell B Hardness: 85 HRB (TYPICAL)Section Size: 0.5; Section Size: 0.5 inCopper Development Association (CDA) — H04	0.5	—	—	—	—	—	85 HRB	VERIFIED
Flat Products	Soft Anneal (O60) · 20 °C Source values and qualifiers Tensile Strength: 551.6 MPa (TYPICAL)Section Size: 0.315; Section Size: 0.315 inCopper Development Association (CDA) — Yield Strength (0.5% Ext): 275.8 MPa (TYPICAL)Section Size: 0.315; Section Size: 0.315 in; Yield strength at 0.5% extension under loadCopper Development Association (CDA) — Elongation: 40 % (TYPICAL)Section Size: 0.315; Section Size: 0.315 inCopper Development Association (CDA) — O60	0.315	551.6 MPa	275.8 MPa	40 %	—	—	—	VERIFIED
Flat Products	Soft Anneal (O60) · 20 °C Source values and qualifiers Tensile Strength: 551.6 MPa (TYPICAL)Section Size: 0.312; Section Size: 0.312 inCopper Development Association (CDA) — Yield Strength (0.5% Ext): 275.8 MPa (TYPICAL)Section Size: 0.312; Section Size: 0.312 in; Yield strength at 0.5% extension under loadCopper Development Association (CDA) — Elongation: 40 % (TYPICAL)Section Size: 0.312; Section Size: 0.312 inCopper Development Association (CDA) — O60	0.312	551.6 MPa	275.8 MPa	40 %	—	—	—	VERIFIED
Flat Products	Soft Anneal (O60) Source values and qualifiers Rockwell B Hardness: 83 HRB (TYPICAL)Section Size: 0.312; Section Size: 0.312 inCopper Development Association (CDA) — Shear Strength: 289.6 MPa (TYPICAL)Section Size: 0.312; Section Size: 0.312 inCopper Development Association (CDA) — Fatigue Strength: 179.3 MPa (TYPICAL)Section Size: 0.312; Section Size: 0.312 in; 10^8 cycles endurance limitCopper Development Association (CDA) — O60	0.312	—	—	—	289.6 MPa	179.3 MPa	83 HRB	VERIFIED
Flat Products	Soft Anneal (O60) · 20 °C Source values and qualifiers Tensile Strength: 565.4 MPa (TYPICAL)Section Size: 0.125; Section Size: 0.125 inCopper Development Association (CDA) — Yield Strength (0.5% Ext): 310.3 MPa (TYPICAL)Section Size: 0.125; Section Size: 0.125 in; Yield strength at 0.5% extension under loadCopper Development Association (CDA) — Elongation: 40 % (TYPICAL)Section Size: 0.125; Section Size: 0.125 inCopper Development Association (CDA) — O60	0.125	565.4 MPa	310.3 MPa	40 %	—	—	—	VERIFIED
Flat Products	Soft Anneal (O60) Source values and qualifiers Rockwell B Hardness: 84 HRB (TYPICAL)Section Size: 0.125; Section Size: 0.125 inCopper Development Association (CDA) — Shear Strength: 310.3 MPa (TYPICAL)Section Size: 0.125; Section Size: 0.125 inCopper Development Association (CDA) — Fatigue Strength: 206.8 MPa (TYPICAL)Section Size: 0.125; Section Size: 0.125 in; 10^8 cycles endurance limitCopper Development Association (CDA) — O60	0.125	—	—	—	310.3 MPa	206.8 MPa	84 HRB	VERIFIED
Flat Products	Soft Anneal (O60) · 20 °C Source values and qualifiers Tensile Strength: 565.4 MPa (TYPICAL)Section Size: 0.118; Section Size: 0.118 inCopper Development Association (CDA) — Yield Strength (0.5% Ext): 310.3 MPa (TYPICAL)Section Size: 0.118; Section Size: 0.118 in; Yield strength at 0.5% extension under loadCopper Development Association (CDA) — Elongation: 40 % (TYPICAL)Section Size: 0.118; Section Size: 0.118 inCopper Development Association (CDA) — O60	0.118	565.4 MPa	310.3 MPa	40 %	—	—	—	VERIFIED
Flat Products	Soft Anneal (O60) · 20 °C Source values and qualifiers Tensile Strength: 524 MPa (TYPICAL)Section Size: 1; Section Size: 1 inCopper Development Association (CDA) — Yield Strength (0.5% Ext): 227.5 MPa (TYPICAL)Section Size: 1; Section Size: 1 in; Yield strength at 0.5% extension under loadCopper Development Association (CDA) — Elongation: 45 % (TYPICAL)Section Size: 1; Section Size: 1 inCopper Development Association (CDA) — O60	1	524 MPa	227.5 MPa	45 %	—	—	—	VERIFIED
Flat Products	Soft Anneal (O60) Source values and qualifiers Rockwell B Hardness: 81 HRB (TYPICAL)Section Size: 1; Section Size: 1 inCopper Development Association (CDA) — Fatigue Strength: 193.1 MPa (TYPICAL)Section Size: 1; Section Size: 1 in; 10^8 cycles endurance limitCopper Development Association (CDA) — O60	1	—	—	—	—	193.1 MPa	81 HRB	VERIFIED
Flat Products	Soft Anneal (O60) · 20 °C Source values and qualifiers Tensile Strength: 537.8 MPa (TYPICAL)Section Size: 0.59; Section Size: 0.59 inCopper Development Association (CDA) — Yield Strength (0.5% Ext): 241.3 MPa (TYPICAL)Section Size: 0.59; Section Size: 0.59 in; Yield strength at 0.5% extension under loadCopper Development Association (CDA) — Elongation: 42 % (TYPICAL)Section Size: 0.59; Section Size: 0.59 inCopper Development Association (CDA) — O60	0.59	537.8 MPa	241.3 MPa	42 %	—	—	—	VERIFIED
Flat Products	Soft Anneal (O60) · 20 °C Source values and qualifiers Tensile Strength: 537.8 MPa (TYPICAL)Section Size: 0.5; Section Size: 0.5 inCopper Development Association (CDA) — Yield Strength (0.5% Ext): 241.3 MPa (TYPICAL)Section Size: 0.5; Section Size: 0.5 in; Yield strength at 0.5% extension under loadCopper Development Association (CDA) — Elongation: 42 % (TYPICAL)Section Size: 0.5; Section Size: 0.5 inCopper Development Association (CDA) — O60	0.5	537.8 MPa	241.3 MPa	42 %	—	—	—	VERIFIED
Flat Products	Soft Anneal (O60) Source values and qualifiers Rockwell B Hardness: 82 HRB (TYPICAL)Section Size: 0.5; Section Size: 0.5 inCopper Development Association (CDA) — Shear Strength: 275.8 MPa (TYPICAL)Section Size: 0.5; Section Size: 0.5 inCopper Development Association (CDA) — Fatigue Strength: 172.4 MPa (TYPICAL)Section Size: 0.5; Section Size: 0.5 in; 10^8 cycles endurance limitCopper Development Association (CDA) — O60	0.5	—	—	—	275.8 MPa	172.4 MPa	82 HRB	VERIFIED
Rod	Drawn and Stress Relieved (HR50) · 20 °C Source values and qualifiers Tensile Strength: 517.1 MPa (TYPICAL)Section Size: 1; Section Size: 1 inCopper Development Association (CDA) — Elongation: 30 % (TYPICAL)Section Size: 1; Section Size: 1 inCopper Development Association (CDA) — HR50	1	517.1 MPa	—	30 %	—	—	—	VERIFIED
Rod	Drawn and Stress Relieved (HR50) · 20 °C Source values and qualifiers Tensile Strength: 551.6 MPa (TYPICAL)Section Size: 0.5; Section Size: 0.5 inCopper Development Association (CDA) — Elongation: 30 % (TYPICAL)Section Size: 0.5; Section Size: 0.5 inCopper Development Association (CDA) — HR50	0.5	551.6 MPa	—	30 %	—	—	—	VERIFIED
Rod	Drawn and Stress Relieved (HR50) · 20 °C Source values and qualifiers Tensile Strength: 482.6 MPa (TYPICAL)Section Size: 2; Section Size: 2 inCopper Development Association (CDA) — Elongation: 30 % (TYPICAL)Section Size: 2; Section Size: 2 inCopper Development Association (CDA) — HR50	2	482.6 MPa	—	30 %	—	—	—	VERIFIED
Rod	Hard (H04) · 20 °C Source values and qualifiers Tensile Strength: 586.1 MPa (TYPICAL)Section Size: 0.5; Section Size: 0.5 inCopper Development Association (CDA) — Yield Strength (0.5% Ext): 310.3 MPa (TYPICAL)Section Size: 0.5; Section Size: 0.5 in; Yield strength at 0.5% extension under loadCopper Development Association (CDA) — Elongation: 35 % (TYPICAL)Section Size: 0.5; Section Size: 0.5 inCopper Development Association (CDA) — H04	0.5	586.1 MPa	310.3 MPa	35 %	—	—	—	VERIFIED
Rod	Hard (H04) Source values and qualifiers Rockwell B Hardness: 91 HRB (TYPICAL)Section Size: 0.5; Section Size: 0.5 inCopper Development Association (CDA) — Shear Strength: 330.9 MPa (TYPICAL)Section Size: 0.5; Section Size: 0.5 inCopper Development Association (CDA) — H04	0.5	—	—	—	330.9 MPa	—	91 HRB	VERIFIED
Rod	Hard (H04) · 20 °C Source values and qualifiers Tensile Strength: 565.4 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: 35 % (TYPICAL)Section Size: 1; Section Size: 1 inCopper Development Association (CDA) — H04	1	565.4 MPa	275.8 MPa	35 %	—	—	—	VERIFIED
Rod	Hard (H04) Source values and qualifiers Rockwell B Hardness: 90 HRB (TYPICAL)Section Size: 1; Section Size: 1 inCopper Development Association (CDA) — Shear Strength: 310.3 MPa (TYPICAL)Section Size: 1; Section Size: 1 inCopper Development Association (CDA) — H04	1	—	—	—	310.3 MPa	—	90 HRB	VERIFIED
Rod	Hard (H04) · 20 °C Source values and qualifiers Tensile Strength: 551.6 MPa (TYPICAL)Section Size: 2; Section Size: 2 inCopper Development Association (CDA) — Yield Strength (0.5% Ext): 241.3 MPa (TYPICAL)Section Size: 2; Section Size: 2 in; Yield strength at 0.5% extension under loadCopper Development Association (CDA) — Elongation: 35 % (TYPICAL)Section Size: 2; Section Size: 2 inCopper Development Association (CDA) — H04	2	551.6 MPa	241.3 MPa	35 %	—	—	—	VERIFIED
Rod	Hard (H04) Source values and qualifiers Rockwell B Hardness: 88 HRB (TYPICAL)Section Size: 2; Section Size: 2 inCopper Development Association (CDA) — Shear Strength: 275.8 MPa (TYPICAL)Section Size: 2; Section Size: 2 inCopper Development Association (CDA) — Fatigue Strength: 179.3 MPa (TYPICAL)Section Size: 2; Section Size: 2 in; 10^8 cycles endurance limitCopper Development Association (CDA) — H04	2	—	—	—	275.8 MPa	179.3 MPa	88 HRB	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

C61400 Aluminum Bronze D Processing & Fabrication

Machining, joining, forming, and thermal processing ratings cataloged from the cited authoritative technical reference.

Source: Copper Development Association (CDA)

Machinability

Machinability rating: 20% relative to free-cutting brass (C36000 = 100%).

Weldability & Joining

Soldering: Not Recommended; Brazing: Fair; Oxyacetylene Welding: Not Recommended; Gas Shielded Arc Welding: Good; Coated Metal Arc Welding: Good; Spot Weld: Good; Seam Weld: Good; Butt Weld: Good

Heat Treatment & Working Ranges

Annealing temperature range: 607.2°C to 898.9°C (1125°F - 1650°F). Hot working temperature range: 787.8°C to 926.7°C (1450°F - 1700°F).

Forming & Cold Working

Capacity for Being Cold Worked: Good. Capacity for Being Hot Formed: Good.

Practical Engineering & Fabrication Notes

By Mat Grades Editorial Desk · Updated 2026-11-14. Use alongside the specified product standard and supplier certificate.

Machining & shop-floor behavior

The cataloged machining note for C61400 Aluminum Bronze D states: Machinability rating: 20% relative to free-cutting brass (C36000 = 100%). A relevant hardness example is Rockwell B Hardness: 87 HRB (typical; Hard (H04), H04, Flat Products, 0.125). Use that supplied condition for a trial of the difficult feature. Record tool changes, burr removal, unclamped dimensions and accepted parts per hour. Relative machinability ratings from different reference scales should not be compared as if they were one common test.

Weldability, brazing & joining

The available joining assessment states: Soldering: Not Recommended; Brazing: Fair; Oxyacetylene Welding: Not Recommended; Gas Shielded Arc Welding: Good; Coated Metal Arc Welding: Good; Spot Weld: Good; Seam Weld: Good; Butt Weld: Good The first cataloged strength example is Tensile Strength: 613.6 MPa (typical; Hard (H04), H04, Flat Products, 0.125; test temperature 20 °C). Assess the final part after joining or thermal processing. Include distortion, cleanup and inspection in the quotation. A material designation or favorable process rating is a starting point for qualification, not evidence that an untested joint meets the drawing.

Corrosion & service environment

Review the working fluid, cleaning agents and dissimilar-metal contacts as separate exposures. The word copper, brass or bronze is too broad to establish compatibility. A process rating does not qualify a pressure boundary, and a thermal-property measurement does not establish a continuous service-temperature limit. The recorded thermal example is Thermal Conductivity: 67.5 W/(m·K) (typical; ; test temperature 20 °C). State the exposure and inspection access in the design record so that a change of installation or cleaning method triggers a review. The selected composition entries are Pb maximum 0.01 wt%, Zn maximum 0.2 wt%. Chemistry documents identity; it does not establish fluid compatibility.

Selection trade-offs & applications

Use UNS C61400, COMMERCIAL Aluminum Bronze D, CDA Alloy 614 to identify the candidate, then specify the product form and delivered condition separately. The catalog lists Blending Chambers: Mechanical Properties as an application example. The related candidate C63000 Nickel-Aluminum Bronze (AMS 4640) is linked for comparison; its commonly compared relationship must be checked before substitution. Compare the complete route through machining, joining, finish and inspection. Keep the certificate, required test location and acceptance criteria with the first-article record. A later change of grade, condition or source should be assessed against that same requirement.

Technical references: Copper Development Association (CDA); Copper Development Association (CDA)

C61400 Aluminum Bronze D Equivalent & Comparable Grades

Comparable Grades & Cross-References: Carefully classified cross-reference relationships for C61400 Aluminum Bronze D. Comparable does not mean equivalent.

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Related Material	Family	Relationship Classification	Metallurgical Notes & Differences	Status	Action
C63000 Nickel-Aluminum Bronze (AMS 4640)	Copper Alloys	Commonly Compared	C61400 (Alloy D) is single-phase alpha aluminum bronze with 6-8% Al, offering high ductility and outstanding ASME code weldability. C63000 is a high-strength multi-phase Ni-Al bronze (AMS 4640).Materials serve different design priorities (e.g. higher strength vs superior corrosion resistance or cost).	VERIFIED
C65500 High-Silicon Bronze A	Copper Alloys	Commonly Compared	Both alloys are weldable, corrosion-resistant wrought copper alloys; C61400 provides superior cavitation and mineral acid resistance; C65500 provides superior fastener cold forming.Materials serve different design priorities (e.g. higher strength vs superior corrosion resistance or cost).	VERIFIED

Aluminum Bronze Alloy Family

Copper alloys sharing common alloying formulations and metallurgical classifications under the Aluminum Bronze branch.

4 Adjacent Grades

C61400Current Grade

C61400 Aluminum Bronze D

C63000

C63000 Nickel-Aluminum Bronze (AMS 4640)

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C63200

C63200 Nickel-Aluminum Bronze (Naval Alloy)

View Grade →

C95400

C95400 Aluminum Bronze 9C

View Grade →

Related Engineering & Metallurgy Guides

Contextual technical guides explaining degradation mechanisms, testing methodologies, and selection criteria relevant to C61400 Aluminum Bronze D.

Welding & Fabrication18 min read

How to Weld Aluminium to Aluminium: TIG, MIG, Filler Metals & Alloy Guide

Aluminium possesses distinct physical and metallurgical properties—including a tenacious refractory oxide layer that melts at 2,072°C, thermal conductivity five times higher than structural steel, extreme liquid hydrogen solubility, and a lack of visible color change before melting. Successful aluminium-to-aluminium welding requires matching the base alloy series to an appropriate process (AC TIG, pulsed MIG, or SMAW) and compatible filler metal while designing for unavoidable heat-affected zone softening.

Author: Mat Grades Editorial DeskRead Guide →

Sources

Sources & Provenance Trail: Authoritative reference publications, standards specifications, and data registers cited across this material record.

Copper Development Association Inc.CDA Alloy C61400 Property & Specification Profile

AUTHORITATIVE BODY

Copper Development Association authoritative technical reference profile for C61400 Aluminum Bronze D.

Issuing Body: Copper Development Association (CDA)View Source Record ↗

Copper Development Association Inc.CDA UNS Standard Designations Register (C61400)

AUTHORITATIVE BODY

Unified Numbering System (UNS) designation registration register confirming active C61400 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.