Equivalent Specifications

ASTM B505 C91000
SAE J461
SAE J462
QQC 390B Type 111
MIL B 16262 Grade 111
QQB-1005 Comp 9
Navy G

Key Features

Hard, strong, tough, resistant to wear, fine-grained. Good machinability and corrosion-resistant to sea water. Good resistance to pounding.

Typical Uses

Worm wheels, gears, bushings for heavy loads and low speeds. Used for piston rings.
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ASTM C91000

An American continuous cast high strength tin bronze CuSn15. With the high tin content the alloy has low elongation, shock and impact resistance. Suitable for highly stressed sliding plates and sliding blocks, sliding bearing shells of thick-walled design for p max. = 8,000 N / cm 2. The alloy can also be supplied to alternative specifications QQ-C-390 D2, QQ-B-1005 Comp 9, Mil-B-16262 Grade 111 and AFNOR A 53-707.

Description Tin Bronze
Nominal Composition CuSn15
Alloy Type Cast

Typical Mechanical Properties

Tensile Strength (N/mm²) 220
Proof/Yield Strength (N/mm²) 172
Elongation (%) 2
Hardness Brinell 160
Impact Izod J20°C  

Typical Physical Properties

Density g/cm³ 8.78
Melting Temperature Range °C 818-960
Thermal Conductivity W/mK  
Electrical Resistivity μΩ.m15°C 0.185
Coefficient of Thermal Expansion 0-250°C  
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.