How does C63000 compare to C95400 aluminum bronze?

C63000 adds 4-5.5% nickel to the base Al-bronze composition, which: (1) increases tensile strength by ~20% (690 MPa vs 585 MPa for C95400); (2) dramatically improves corrosion fatigue resistance in seawater; (3) suppresses the formation of continuous gamma-2 phase (Cu₉Al₄ — brittle intermetallic that forms in aluminum bronzes with >9.4% Al, causing embrittlement from slow cooling in heavy sections). C63000 can be used in sections >75 mm without the selective phase corrosion that plagues high-aluminum-content nickel-free aluminum bronzes. The cost premium for C63000 over C95400 is approximately 25-35%.

C63000 Nickel Aluminum Bronze (AMS 4640): Hoch-Strength Corrosion-Resistant Copper Alloy

ASTM B150 / AMS 4640 / ASME SB-150 · Published: 2026-05-31 · Updated: July 2026

Quick Reference

C63000 nickel aluminum bronze is the highest-strength copper alloy in common industrial use, achieving tensile strengths competitive with carbon steel while maintaining the corrosion resistance and non-sparking characteristics of copper alloys....

C63000 nickel aluminum bronze ist der highest-strength copper alloy in gemein industrial verwenden, achieving tensile strengths competitive mit carbon steel while maintaining der corrosion widerstand und non-sparking characteristics von copper alloys. Der nickel (4.0-5.5%) und iron (2.0-4.0%) additions refine der grain structure und enable precipitation von kappa-phase intermetallics (NiAl, Fe₃Al) das bereitstellen beide strengthening und excellent wear widerstand. C63000 ist der standard material für aircraft landing gear bushings, marine propeller shafts, pumpe wear rings, und non-sparking safety tools für explosive atmospheres (öl refineries, chemical plants, grain elevators). Es ist immune zu hydrogen embrittlement (unlike hoch-strength steels) und maintains toughness bei cryogenic temperatures.

Quick Facts

Kategorie	Copper Alloy
Norm	`ASTM B150 / AMS 4640 / ASME SB-150`
Density	7.58 g/cm³
Yield Strength	345-415 MPa (50-60 ksi) depending on temper
Tensile Strength	655-760 MPa (95-110 ksi) depending on temper

Global Equivalents & Cross-Reference

Alternative Norm / Güte	Action
EN CuAl10Ni5Fe4	Compare
DIN 2.0966	Compare
JIS C6301	Compare
BS CA104	Compare
Nibron Special	Compare

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Frequently Asked Questions

Wie tut C63000 compare zu C95400 aluminum bronze?

C63000 adds 4-5.5% nickel zu der base Al-bronze composition, welche: (1) increases tensile strength durch ~20% (690 MPa vs 585 MPa für C95400); (2) dramatically improves corrosion fatigue widerstand in seawater; (3) suppresses der formation von continuous gamma-2 phase (Cu₉Al₄ — brittle intermetallic das forms in aluminum bronzes mit >9.4% Al, causing embrittlement von slow cooling in heavy sections). C63000 können sein used in sections >75 mm ohne der selective phase corrosion das plagues hoch-aluminum-content nickel-kostenlos aluminum bronzes. Der kosten premium für C63000 über C95400 ist approximately 25-35%.

References & International Standards

ASTM International. Norm Specifications für Stahl & Metal Alloys. astm.org
International Organization für Standardization (ISO). Metallic Materials — Cross-Referenz Database. iso.org
American Iron und Stahl Institute (AISI). Stahl Güte Designations & Equivalents. steel.org
European Committee für Standardization (CEN). EN Stahl Standards & Numbering System. cencenelec.eu