Equivalent Specifications

BS 1400 CMA1
ASTM B505 C95500
ASTM B 148 C95700

Key Features

This alloy was mainly developed for the marine propeller industry, where its resistance to erosion and cavitational corrosion exceeded other aluminium bronzes. Has comparable strength and fatigue properties to some of the Nickel Aluminium bronzes but exhibits superior impact strength.

Typical Uses

Bearings or marine components requiring good sea water corrosion resistance, high strength and impact properties. Widely used for ship propellers and associated equipment such as shaft bearings and sleeves.
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ASTM B 505 C95700

An American continuous cast manganese aluminum bronze CuMn13Al8Fe3Ni2.This is a high strength bronze with excellent impact properties, corrosion resistance and is non sparking. It is used for stator clamps, worm wheels, safety tools and marine hardware. The alloy can be manufactured to several specifications Mil-B-21230, En 1982-2008 CC212E, BS 1400 CMA1, GB 1176 ZCuAl8Mn13Fe3Ni2-J, JIS H 5120 CAC 704 Class 4, AS 1565 C95710 and GOST 493 BrA7Mc15Z3N2-J.

Description Copper Manganese Aluminium
Nominal Composition CuMn13Al8Fe3Ni3
Alloy Type Cast

Typical Mechanical Properties

Tensile Strength (N/mm²) 560
Proof/Yield Strength (N/mm²) 300
Elongation (%) 8
Hardness Brinell 180
Impact Izod J20°C 41

Typical Physical Properties

Density g/cm³ 7.5
Melting Temperature Range °C 950-990
Thermal Conductivity W/mK 14
Electrical Resistivity μΩ.m15°C 0.58
Coefficient of Thermal Expansion 0-250°C 19
Relative Magnetic Permeability  
Coefficient of Friction

Copper Alloys Ltd has the ability to modify existing alloys for improved performance. Many customers have benefited from this in the past.

To discuss your requirements, call a member of Copper Alloys Ltd's technical team on +44 (0) 1782-816888, or email sales@copperalloys.net.

This Data is indicative only and must not be seen as a substitute for the full specification from which it is drawn. In particular, the mechanical property requirements vary widely with tempeter, product and product dimensions. The information is based on our present knowledge and is given in good faith. However, no liability will be acepted by the Company in respect of any action taken by any third party in reliance thereon.

As the products detailed may be used for a wide variety of purposes and as the Company has no control over their use; the Company specifically excludes all conditions or warranties expressed or implied by statute or otherwise as to dimensions, properties and/or fitness for any particular purpose.

Any advice given by the Company to any third party is given for that party's assistance only and without liability on the part of the Company. Any contract between the Company and a customer will be subject to the Company's Conditions of Sale. The extent of the Company's liabilities to any customer is clearly set out in those Conditions, a copy of which is available on request.