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GB/T1591 Q420B/C (Q420NB/NC/ND/NE) Low alloy High strength Steel Plate

Packaging Details: Standard export seaworthy packing or as required.
Delivery Time:only one week for stock, customized products according to order negotiation.
Loading Port:Shanghai ,Qingdao,Tianjin .
payment terms:By T/T or L/C.
Supply capacity:5000MT/month.
MOQ: According to order negotiation.

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PRODUCT DESCRIPTION

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

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GB/T1591 Q420B Low-alloy High-strength Steel Plate Chemical Composition

Grade	Mechanical Property max
	C	Si	Mn	P	S	Nb	V	Ti	Cr	Ni	Cu	N	Mo	AL min
Q420B	0.2	0.5	1.7	0.35	0.35	0.07	0.2	0.2	0.3	0.8	0.3	0.015	0.2	~

GB/T1591 Q420B Low-alloy High-strength Steel Plate Mechanical Property

Grade	Mechanical Property
	Yield Strength (Mpa)							Tensile Strength
	≤16	>16-40	>40-63	>63-80	>80-100	>100-150	>150-400	≤100	>100-150	>250-400
Q420B	390	370	350	330	330	310	~	520-680	500-650	~

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GB/T1591 Q420B Low-alloy High-strength Steel PlateGB/T1591 Q420B Low alloy High strength Steel Plate Application

GB/T1591 Q420B Steel Plate are used in Construction of Bridges,

GB/T1591 Q420B Low-alloy High-strength Steel PlateGB/T1591 Q420B Low alloy High strength Steel Plate Other Name

GB/T1591 Q420B Carbon Structural Steel Plate, GB/T1591 Q420B High Strength Structural Steel Plate, GB/T1591 Q420B Carbon Steel plate, GB/T1591 Q420B Structural Steel Plate.

GB/T1591 Q420B Low-alloy High-strength Steel PlateAdditional 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.