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Hot rolled structural steel


With excellent weldability and mechanical properties, and be suitable for welding, riveting, hinging and general structure purpose.

Classification:

Keyword:

Hot rolled structural steel

Details Introduction

1. Application and Features

With excellent weldability and mechanical properties, and be suitable for welding, riveting, hinging and general structure purpose.

2. Grades and Standards

Grades:Q195, 235A/B/C/D

Standard:Q/TB202

3. Technical Delivery Conditions

Product specifications

Thickness: 1.2-12.7(mm)

Width: 850-1650(mm)

Delivery conditions

Delivered in hot rolled state.

4. Chemical Composition (Cast analysis) wt%

Grades

C

Mn

Si

S

P

Als

Q195

0.12

0.50

0.30

0.020

0.025

0.010

Q235A

0.22

1.40

0.35

0.020

0.025

0.010

Q235B

0.20

1.40

0.35

0.020

0.025

0.015

Q235C

0.17

1.40

0.35

0.020

0.025

0.015

Q235D

0.17

1.40

0.35

0.020

0.020

0.015

Note

Subject to the customer's approval, carbon content in steel grade Q235B can be up to 0.22%.

5. Mechanical properties

Grades

R eL /MPa

R m /MPa

A 50 %

Bending Test 180°b=2a

Bend Mandrel Diameter

Impact Test (V type notch)

Temperature℃

Impact Absorbed

Energy/J

Q195

195

315-430

32

0.5a

-

-

Q235A

235

370-500

26

1.5a

-

-

Q235B

235

370-500

26

1.5a

+20

 

Q235C

235

370-500

26

1.5a

0

27

Q235D

235

370-500

26

1.5a

-20

 

备注

 

1. a =sample thickness, b = sample width

2. Take Rp 0.2 in case of indistinct yielding.

3. Impact test only valid for strips with the thickness not less than 6mm.

4. For Q235B steel grade, impact test can be omitted according to agreement between customers and supplier if the supplier can guarantee the impact absorbed energy.

 

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