连云港st52对应中国什么材质 连云港小口径冷拔钢管规格 连云港镀锌焊管生产厂家

st52是什么材质，对应中国什么材质？

st52相当于Q345B，或者16mn

化学成分如下：

Chemical composition

C <=0.20

Si <=0.55

Mn <=1.60

P <=0.030

S <=0.030

Cu <=0.55

N <=0.012

Material Number

1.0553

Steel group

Non alloy quality steels: Steels with average C > 0,25 < 0,55 % or Rm  > 500 < 700 N/mm²

Symbol

S355J0; St 52-3 U †

Standards

DIN EN 10025-2 (04/2005)

Hot rolled products of structural steels. Technical delivery conditions for non-alloy structural steels.

International conformity

EN 10025-2 (2004)

Replaces

DIN EN 10025-2 (02/2005); DIN EN 10025 (03/1994); DIN EN 10113-2 (04/1993)

Way of deoxydation: rimmed is not permitted

With special cold workability: 1.0554; S355J0C

Former designation DIN 17100: St 52-3 U

Former designation of steels with special working properties,

Cold flanging: 1.0573; QSt 52-3 U

Cold drawing: 1.0597; ZSt 52-3 U

Cold roll forming: 1.0575; KSt 52-3 U

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