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STOL® 76M R410

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STOL® 76M is an optimized CuNiSi alloy that can be hardened by cold forming and by precipitation of NiSi-phases during a heat treatment. It has excellent bendability, excellent hot and cold forming properties, a high strength and a good corrosion resistance. Due to the NiSi-precipitations the relaxation properties, even at temperatures up to 150°C are excellent. In combination with a tin coating even at temperatures around 150°C (3.000h) the tin coating does not peel off.

Equivalent Materials

This material data has been provided by Matmatch.

"Typical" values were obtained via a literature search. "Predicted" values were imputed via artificial intelligence technology. While we have placed significant efforts in ensuring data accuracy, "typical" and "predicted" data should be considered indicative and verified by appropriate material testing. Please do contact us if additional information on the the predicted data method is required.
All metrics apply to room temperature unless otherwise stated. SI units used unless otherwise stated.
Equivalent standards are similar to one or more standards provided by the supplier. Some equivalent standards may be stricter whereas others may be outside the bounds of the original standard.

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23.0 °C

8.9 g/cm³

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Bendability 180°, bw

23.0 °C

0.5 [-]

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r = x t, t <0.5mm

Bendability 180°, gw

23.0 °C

1 [-]

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r = x t, t <0.5mm

Bendability 90°, bw

23.0 °C

0 [-]

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r = x t, t <0.5mm

Bendability 90°, gw

23.0 °C

0 [-]

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r = x t, t <0.5mm

Elastic modulus

23.0 °C

118 - 135 GPa

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depending on the condition

Elongation A50

23.0 °C

9 - 11 %

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Hardness, Vickers

23.0 °C

125 - 155 [-]

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Tensile strength

23.0 °C

410 - 470 MPa

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Yield strength Rp0.2

23.0 °C

360 MPa

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Coefficient of thermal expansion

300.0 °C

1.68E-5 1/K

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for 20°C to the mentioned temperature

Specific heat capacity

23.0 °C

377 J/(kg·K)

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Thermal conductivity

23.0 °C

260 W/(m·K)

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Specific Electrical conductivity

57 % IACS

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Chemical properties





1.4 - 1.7 %

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0 - 0.5 %

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0.2 - 0.35 %

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0.02 - 0.3 %

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0.35 - 0.5 %

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Technological properties

Application areas

Automotive: Switches and Relays, Contacts, Connectors, Terminals, Press fits. Electrical: Switches and Relays, Contacts, Connectors, Terminals, Press fits, Components for the electrical industry, Stamped parts, Semiconductor Components.



Cold Forming


Corrosion properties

STOL® 76M has good corrosion resistance, The alloy is insensitive to stress corrosion cracking

Heat Treatment

Temper: R410

Hot forming

at 750-950°C, excellent


Rating 20, less suitable


This alloy is in accordance with RoHS 2002/96/CE for electric & electronic equipments and 2002/53/CE for automotive industry.


Electroplating is excellent


Gas Shielded Arc Welding: Excellent, Laser Welding: Fair

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