EN 10137-2 Grade S550QL1 quenched and tempered (+QT)

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Description

S550QL1 is a tempered and weldable fine grained steel. yield point: >550 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 -60°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)

Related Standards

Equivalent Materials

This material data has been provided by WIAM.

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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Properties

General

PropertyTemperatureValue

Density

20.0 °C

7.84 g/cm³

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Mechanical

PropertyTemperatureValueComment

Elastic modulus

20.0 °C

210 GPa

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Elongation

20.0 °C

16 %

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Elongation, transverse

20.0 °C

18 %

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Poisson's ratio

23.0 °C

0.3 [-]

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Typical for Steel

Shear modulus

20.0 °C

80 GPa

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Tensile strength

20.0 °C

590 - 820 MPa

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Tensile strength, transverse

20.0 °C

640 - 820 MPa

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Yield strength

20.0 °C

490 - 550 MPa

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Yield strength Rp0.2

100.0 °C

530 MPa

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150.0 °C

510 MPa

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200.0 °C

475 MPa

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250.0 °C

455 MPa

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300.0 °C

440 MPa

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350.0 °C

425 MPa

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400.0 °C

410 MPa

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Yield strength, transverse

20.0 °C

550 MPa

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Thermal

PropertyTemperatureValue

Coefficient of thermal expansion

100.0 °C

1.2E-5 1/K

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Specific heat capacity

20.0 °C

430 J/(kg·K)

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Thermal conductivity

20.0 °C

39 W/(m·K)

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Electrical

PropertyTemperatureValue

Electrical resistivity

20.0 °C

2.7E-7 Ω·m

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Chemical properties

PropertyValue

Aluminium

0.015 %

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Boron

5E-3 %

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Carbon

0.2 %

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Chromium

1.5 %

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Copper

0.5 %

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Manganese

1.6 - 1.7 %

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Molybdenum

0.6 - 0.7 %

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Nickel

2 %

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Niobium

0.06 %

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Nitrogen

0.02 %

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Phosphorus

0.02 %

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Silicon

0.8 %

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Sulfur

0.01 %

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Titanium

0.05 %

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Vanadium

0.12 %

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Zirconium

0.12 - 0.15 %

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