EN 10089 Grade 56Si7 quenched and tempered (+QT)

EN 10089 Grade 56Si7 quenched and tempered (+QT) introduction

The steel 56Si7 is used for hot formed springs, leaf springs up to 7 mm thickness, coil springs, spring plates and diaphragm springs for mechanical engineering.

Equivalent material: AS XK9258S, IS 55Si7, GOST 55S2, GOST 55С2, GOST 55S2A, GOST 55С2A, AISI 9255, UNS G92550, DIN 55Si7, DIN 1.5026, AFNOR 55S7, BS EN45, BS EN45 A, BS 250A53, BS 250A58, BS 250A61, AISI 9555, SAE 9555, EN 1.5026, GB 55Si2Mn

EN 10089 Grade 56Si7 quenched and tempered (+QT) general

Property Temperature Value Comment
Density 23.0 °C Density of 7.8 g/cm³ Typical for Steel

EN 10089 Grade 56Si7 quenched and tempered (+QT) chemical

Property Value
Carbon Carbon of 0.52 - 0.6 %
Manganese Manganese of 0.6 - 0.9 %
Phosphorus Phosphorus of 0.03 %
Silicon Silicon of 1.6 - 2 %
Sulfur Sulfur of 0.025 %

EN 10089 Grade 56Si7 quenched and tempered (+QT) mechanical

Property Temperature Value Comment
Elastic modulus 23.0 °C Elastic modulus of 190 - 210 GPa Typical for Steel
Elongation 20.0 °C Elongation of 6 % -
Poisson's ratio 23.0 °C Poisson's ratio of 0.3 [-] Typical for Steel
Reduction of area 20.0 °C Reduction of area of 25 % -
Tensile strength 20.0 °C Tensile strength of 1450 - 1750 MPa -
Yield strength Rp0.2 20.0 °C Yield strength Rp0.2 of 1300 MPa -

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