EN 12163 Grade CuSn8 R390 – Premium Tin‑Copper Alloy for Superior Corrosion Resistance

CuSn8, mat. No. CW453K, is comparable to the DIN-make CuSn8, mat. No. 2.1030, acc. to DIN 17662 : 1983-12. Properties of the CuSn-alloy are predominantly determined by the tin-content. Tensile strength, yield point and hardness increase according to the rising cold forming grade, elongation after fracture decreases. Electrical and thermal conductivity are lower than for pure copper. Very high resistance to corrosion, particularly to atmospheric influences, seawater, sulfite liquor, carbonated and salted mine water. The alloys are stress corrosion-proof. Processing properties: warm forming: medium cold forming: very good machinability: medium hard soldering: good soft soldering: good gas shielded welding: good burnishing: good Application: For friction elements, especially for thin-walled friction-bearing bushings and sliding strips as well as for beater bars. Increased abrasion and corrosion resistance compared to CuSn6. For the electrolytically tinned strip the coatings (Sn bright, Sn matt, Sn fuzed, SnPb) are listed by the application (better solderability, better corrosion resistance, reduction of the electrical contact resistance, better appearance) in the DIN EN 14436 : 2004-11 (Table 5)

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NINGBO BOWAY ALLOY MATERIAL

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Quantity: 4 TonnesAdditional services: Slitting center, Electro Plating, Electro Plating Reflow, Multilayer Advanced barrier Sn.

LEBRONZE ALLOYS

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Quantity: Depending on material – Contact usAdditional services: Specific treatments, size customisation, co-design

Properties

General

Property	Temperature	Value
Density	20.0 °C	8.79 - 8.8 g/cm³

Mechanical

Property	Temperature	Value
Elastic modulus	20.0 °C	115 GPa
Elongation	20.0 °C	45 %
Elongation A10	20.0 °C	40 %
Elongation A100	20.0 °C	35 %
Elongation A11.3	20.0 °C	40 %
Poisson's ratio	20.0 °C	0.34 [-]
Tensile strength	20.0 °C	390 MPa
Yield strength Rp0.2	20.0 °C	260 - 280 MPa

Thermal

Property	Temperature	Value
Coefficient of thermal expansion	100.0 °C	1.8E-5 1/K
	300.0 °C	1.82E-5 1/K
	400.0 °C	1.87E-5 1/K
	650.0 °C	2.22E-5 1/K
	800.0 °C	2.18E-5 1/K
Specific heat capacity	20.0 °C	377 J/(kg·K)
Thermal conductivity	20.0 °C	67 W/(m·K)
	200.0 °C	81 W/(m·K)

Electrical

Property	Temperature	Value
Electrical conductivity	20.0 °C	7.50E+6 S/m
	200.0 °C	6.50E+6 S/m
Electrical resistivity	20.0 °C	1.33E-7 Ω·m
	200.0 °C	1.54E-7 Ω·m
Specific Electrical conductivity		13 % IACS

Chemical properties

Property	Value
Iron	0.1 %
Lead	0.02 %
Nickel	0.2 %
Phosphorus	0.01 - 0.4 %
Tin	7.5 - 8.5 %
Zinc	0.2 %