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EN 10268 Grade H280LA: Premium Micro-Alloyed Steel for Automotive & Construction

H280LA, mat. No. 1.0489, is a micro alloyed steel with a min. yield strength of 280 N/mm² and a min. ultimate strain of 24 %. The material is well cold formable. The mandrel diameter at bending test min. 180° amounts to 0e for transverse test specimen (e= nominal thickness). Thin sheets made of micro alloyed high-tensile steel allow for a steel thickness reduction and therewith a building weight reduction for special application purposes. Application: car manufacturing, construction trade, household appliances industry, plant construction etc. The material is suitable for metallization by hot-dip coating, application of electrolytic coatings and/or of organic or other coating. Welding: The material is suitable for: - MAG (metal-active-gas) - plasma welding - laser welding - compression weld welding - resistance welding (spot, roll weld, buckle welding) - arc hand welding

Properties

General

PropertyTemperatureValue

Density

20.0 °C

7.85 g/cm³

Mechanical

PropertyTemperatureValueComment

Elastic modulus

-100.0 °C

217 GPa

20.0 °C

212 GPa

100.0 °C

207 GPa

200.0 °C

199 GPa

300.0 °C

192 GPa

400.0 °C

184 GPa

500.0 °C

175 GPa

600.0 °C

164 GPa

Elongation A80

20.0 °C

24 %

Poisson's ratio

20.0 °C

0.28 [-]

Shear modulus

23.0 °C

82 GPa

Typical for Low Carbon Steel

Tensile strength

20.0 °C

370 MPa

Yield strength

20.0 °C

280 - 360 MPa

Thermal

PropertyTemperatureValueComment

Coefficient of thermal expansion

-100.0 °C

1.08E-5 1/K

20.0 °C

1.19E-5 1/K

100.0 °C

1.25E-5 1/K

200.0 °C

1.3E-5 1/K

300.0 °C

1.36E-5 1/K

400.0 °C

1.41E-5 1/K

500.0 °C

1.45E-5 1/K

600.0 °C

1.49E-5 1/K

Max service temperature

500 °C

Typical for Carbon Steel

Melting point

1480 - 1526 °C

Typical for Low Carbon Steel

Specific heat capacity

-100.0 °C

423 J/(kg·K)

20.0 °C

461 J/(kg·K)

100.0 °C

479 J/(kg·K)

200.0 °C

499 J/(kg·K)

300.0 °C

517 J/(kg·K)

400.0 °C

536 J/(kg·K)

500.0 °C

558 J/(kg·K)

600.0 °C

587 J/(kg·K)

Thermal conductivity

20.0 °C

56.9 W/(m·K)

100.0 °C

56.4 W/(m·K)

200.0 °C

53.5 W/(m·K)

300.0 °C

49.4 W/(m·K)

400.0 °C

45.2 W/(m·K)

500.0 °C

41.3 W/(m·K)

600.0 °C

37.6 W/(m·K)

Thermal diffusivity

20.0 °C

15.7 mm²/s

100.0 °C

14.5 mm²/s

200.0 °C

12.9 mm²/s

300.0 °C

11.2 mm²/s

400.0 °C

9.6 mm²/s

500.0 °C

7.9 mm²/s

600.0 °C

6.3 mm²/s

Electrical

PropertyTemperatureValue

Electrical resistivity

20.0 °C

1.83E-7 Ω·m

100.0 °C

2.27E-7 Ω·m

200.0 °C

2.95E-7 Ω·m

300.0 °C

3.8E-7 Ω·m

400.0 °C

4.81E-7 Ω·m

500.0 °C

5.99E-7 Ω·m

600.0 °C

7.38E-7 Ω·m

Magnetic

PropertyValueComment

Curie temperature

770 °C

Typical for Low Carbon Steel

Chemical properties

PropertyValue

Aluminium

0.015 %

Carbon

0.1 %

Manganese

0.8 %

Niobium

0.09 %

Phosphorus

0.03 %

Silicon

0.5 %

Sulfur

0.025 %

Titanium

0.15 %


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