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GB/T1591 Q420B Carbon and Low-alloy High-strength Steel Coil

GB/T1591 Q420B Carbon and Low-alloy High-strength Steel Coil Chemical Composition and Mechanical Property

C max

Si max.

Mn max

P max

S max

Nb max.

V max.

Ti max

Cr max

Ni max

Cu max

N max

Mo max B max

Ala min

0.20

0.50

1.70

0.035

0.035

0.07

0.20

0.20

0.30

0.80

0.30

0.015

0.20 -

-

Yield Strength (MPa) min. (t≤16mm) Yield Strength (MPa) min.(16mm<t≤25.4mm) Tensile Strength (MPa) Elongation % min.
420 400 520-680 19

GB/T1591 Q420B Carbon and Low-alloy High-strength Steel Coil Application

GB/T1591 Q420B carbon steel coil is used in the Construction of Bridges, Highway Construction and Other Engineering construction.

GB/T1591 Q420B Carbon and Low-alloy High-strength Steel Coil Other Name

GB/T1591 Q420B structural steel, Q420B carbon steel coil, Q420B structural steel coil

Additional Condition

UT(Ultrasonic examination), AR(As Hot Rolled only), TMCP(Thermal Mechanical Control Processing), N(Normalized), Q+T(Quenched and Tempered),Z Direction Test(Z15,Z25,Z35), Charpy V-Notch Impact Test, The Third Party Test (such as SGS Test), Coated or Shot Blasting and Painting.

Other Terms

Packaging Details: Standard export seaworthy packing or as required.
Delivery Time: 30-50 days, 7 days for stock goods.
Loading Port: Shanghai ,Tianjin, Qingdao.
Offer Ability:5 000MT/Per Month.
MOQ: 1 Pcs.

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