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Cold rolled steel strip for structure


With good surface quality, shapes, weldability and higher strength, the products are suitable for hardware, pipeline and building structure parts.

Classification:

Keyword:

Cold rolled steel strip for structure

Details Introduction

1. Application and Features

With good surface quality, shapes, weldability and higher strength, the products are suitable for hardware, pipeline and building structure parts.

2. Grades and Standards

GB/T 11253-2007:Q235;

2011 JX(19):LQ215;

2011 JX(21):THD

3. Technical Delivery Conditions

Product specifications

Thickness:0.6~2.0(mm)

Width:1000~1540(mm)

Delivery conditions

Delivered as cold rolled and annealed coils.

4.  Chemical composition (Cast analysis)/wt.%

Grades

C

Mn

Si

P

S

Q235

≤ 0.22

≤ 1.40

≤ 0.35

≤ 0.035

≤ 0.035

LQ215

≤ 0.22

≤ 1.20

≤ 0.35

≤ 0.035

≤ 0.035

THD

≤ 0.22

≤ 1.20

≤ 0.35

≤ 0.035

≤ 0.035

5. Mechanical properties

Grades

Yield strength/R e /MPa

Tensile strength/R m /MPa

Elongation /A 80 /%

Hardness/HRB

180°Bend test

Q235

≥ 235

370~500

≥ 22

-

d=1a

LQ215

≥ 215

335~450

≥ 24

-

d=0.5a

THD

-

-

-

65-80

 

1.If the yield point is not pronounced, the value applies to R p0.2 ; if the yield point is pronounced, the value applies to R eL .

2.Sample width B ≥ 20 mm,when arbitration B=20 mm; a is sample thickness.

3. Take transverse sample for tensile and bend tests

 

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