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EN 10137-2 Grade S890QL – High-Strength Quenched & Tempered Steel for Heavy-Duty Applications

S890QL is a tempered and weldable fine grained steel. yield point: >890 N/mm² application: welded steel constructions of various types, e.g. bridges and load-carrying constructions as well as transport vehicles, lifting and earthmoving machines. application limits: at -40°C is warranted a notch impact energy of 30 J (longitudinal test specimen) cold formability: for nominal size < 16 mm bending radius in transversal direction 3xs in longitudinal direction 4xs (s= nominal thickness) hot forming property: allowed only for stress relieve annealing temperature (max. 580°C) suitability for welding: Steel is weldable according to the common welding methods (EURONORM-INFORMATION Nr. 2 has to be considered)

Properties

General

PropertyTemperatureValue

Density

20.0 °C

7.84 g/cm³

Mechanical

PropertyTemperatureValueComment

Elastic modulus

20.0 °C

210 GPa

Elongation

20.0 °C

11 %

Poisson's ratio

23.0 °C

0.3 [-]

Typical for Steel

Tensile strength

20.0 °C

880 - 1100 MPa

Yield strength

20.0 °C

830 - 890 MPa

Thermal

PropertyTemperatureValue

Coefficient of thermal expansion

100.0 °C

1.2E-5 1/K

Specific heat capacity

20.0 °C

440 J/(kg·K)

Thermal conductivity

20.0 °C

38 W/(m·K)

Electrical

PropertyTemperatureValue

Electrical resistivity

20.0 °C

2.8E-7 Ω·m

Chemical properties

PropertyValue

Boron

5E-3 %

Carbon

0.2 %

Chromium

1.5 %

Copper

0.5 %

Manganese

1.7 %

Molybdenum

0.7 %

Nickel

2 %

Niobium

0.06 %

Nitrogen

0.02 %

Phosphorus

0.02 %

Silicon

0.8 %

Sulfur

0.01 %

Titanium

0.05 %

Vanadium

0.12 %

Zirconium

0.15 %


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