Automobile beam steel 550L

Automobile beam steel 550L

Product Name: automobile beam steel

Grade: 550L

Specifications: Thick T: 1.5 ~ 24 W W :800-1100 length L: C

Executive Standard: GB/T3273-2005

Product Scope:

Sulfur, phosphorus content is low, overall performance, weldability and high dimension accuracy. Use automobile beam steel.

Chemical composition:

Carbon C :0.57-0 .65

Si Si :0.17-0 .37

Manganese Mn :0.70-1 .00

Chromium Cr: ≤ 0.25

Ni-Ni: ≤ 0.30

Copper Cu: ≤ 0.25

Mechanical properties:

Tensile strength σb (MPa): ≥ 695

Yield strength σs (MPa): ≥ 410

Elongation δ5 / (%): ≥ 11

Reduction of area ψ / (%): ≥ 35