Product Name: carbon steel
Grade : Q275
Specifications : Thick T: 1.5 ~ 24 W W :800-1100 length L: C
Standard : GB/T700-2006
Product Scope:
With ductility, toughness , cold , good weldability, suitable for engineering machinery, construction machinery, agricultural machinery and other industries and the general structure stampings and welded pipe and so on.
Chemical composition:
( Mass fraction ) ( % )
C: ≤ 0.37
Mn: ≤ 1.5
Si: ≤ 0.35
S: ≤ 0.050 (A grade )
P: ≤ 0.035
Deoxy method : Z
Mechanical properties :
Tensile strength (σb / MPa) :410-560
Elongation (δ5 /%):
≥ 20 (a ≤ 16mm), ≥ 19 (a> 16-40mm)
≥ 18 (a> 40-60mm), ≥ 17 (a> 60-100mm)
≧ 16 (a> 100-150mm), ≥ 15 (a> 150mm)
Wherein a thickness or diameter of the steel .
Elongation (δ5 /%):
≥ 26 (a ≤ 16mm)
≥ 25 (a> 16-40mm)
≥ 24 (a> 40-60mm)
≥ 23 (a> 60-100mm)
≥ 22 (a> 100-150mm)
≥ 21 (a> 150mm)
Wherein a thickness or diameter of the steel .
Cold bending properties:
180 ° cold bending test
d = 3a (B = 2a: 60mm), d = 4a (B = 2a:> 60 ~ 100mm), d = 4.5a (B = 2a:> 100 ~ 200mm)
Where d is the diameter of the apex , B is the specimen width , a thickness or diameter of the steel .
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