Non-ferrous metal
Download
Properties of screws and nuts made from aluminium alloys
Non-binding information depending on manufacturer
The values in the table are for: density = 2,8 kg/dm3, coefficient of thermal expansion = 23,6 · 10–6 · K–1, modulus of elasticity = 70 000 N/mm2
1) Subject to stress corrosion cracking due to the high copper content
2) Elongation at break A – Test on bolt with 2 x d grip length
3) T6 – Solution heat-treated and artificially aged
T8 – Solution heat-treated, cold-formed, and artificially aged
T 73 – Solution heat-treated and artificially overaged (artificially aged) in order to achieve the best stress corrosion resistance
Aluminum properties in comparison
Non-binding information depending on manufacturer
Properties of screws and nuts made from copper alloys
Non-binding information depending on manufacturer
2) Elongation at break A5 – Test on machined test rod with 5 x d test length
3) 1 N/mm2 = 1 MPa
Minimum breaking torque for screws up to M5
according to ISO 8839
