CW451K - Copper Alloys

A wrought 5% tin bronze which conforms to BS EN 12163 CW451K. The nominal composition is CuSn5 and can be certified to BS 2874 PB102. Alloy CW451K can be manufactured in the hard temper, which produces high tensile strength and fatigue properties whilst retaining surprisingly good ductility. CW451K also possesses notable corrosion resistance properties and due to its high strength, can be used in high load bearing applications, which are adequately lubricated.The alloy can also be manufactured to ASTM B 139 C51000, ASTM B 103 C51000.

Equivalent Specifications

BS 1400 PB1
BS EN 1982-2008 GC CC481K
Def Stan 02 838 Part 1
NES 838 Part 1
CuSn11P-C
ASTM B 505 C90700
SAE 65c
NES 838
AS 1565-1985 C90710
AS 1565-1974 904D

Key Features

Can tolerate high loads and high sliding velocity, impact loading or pounding. Good lubrication and alignment essential. Minimum shaft hardness 300HB.

Typical Uses

Critical bearings running with hard shafts. Good lubrication and alignment is essential.

Industrial Restaurant Equipment, Bearings for heavy loads and relatively low speeds, Bearings, Gear Boxes, Speed Reducers, Valve Bodies, Worm Gears.

Description	Phosphor Bronze
Nominal Composition	CuSn10P
Alloy Type	cast

Typical Mechanical Properties

Tensile Strength (N/mm²)	420
Proof/Yield Strength (N/mm²)	190
Elongation (%)	20
Hardness Brinell	120
Impact Izod J20°C

Typical Physical Properties

Density g/cm³	8.8
Melting Temperature Range °C	831 - 999
Thermal Conductivity W/mK	47
Electrical Resistivity μΩ.m15°C	0.17
Coefficient of Thermal Expansion 0-250°C	18
Relative Magnetic Permeability	1.001
Coefficient of Friction

Copper Alloys 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’s technical team on +44 (0) 1782-816888, or email [email protected].

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 accepted 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.