Q265GNH steel plate

Representation method of Q265GNH steel plate grade:
The grades of Q265GNH steel consist of "yield strength", the first letters of the Chinese pinyin "Q" and "GNH" for "weather resistance", the lower limit of yield strength and quality grades (A, B, C, D, E)
Q265GNH steel plate implementation standard: GB/T 4171-2008.
Delivery status of Q265GNH steel plate: delivered in hot-rolled, controlled-rolled or normalized state.

Chemical composition of Q265GNH steel plate (melting analysis)：

Grade	C	Si	Mn	P	S	Cu	Cr	Ni
Q265GNH	≤0.12	0.10-0.40	0.20-0.50	0.07-0.12	≤0.020	0.20-0.45	0.30-0.65	0.25-0.50

Mechanical properties of Q265GNH steel plate：

Grade	Stretching test									180° bending test Bend diameter
	Yield strength MPa not less than				tensile strength MPa	Elongation after break A% not less than
	≤16	16-40	40-60	＞60		≤16	16-40	40-60	＞60	≤6	6-16	＞16
Q265GNH	265	—	—	—	≥410	27	—	—	—	a	—	—

Impact properties of Q265GNH steel plate：

quality level	V-notch impact test
	Sample orientation	temperature ℃	Shock Absorption Energy J
A	portrait	—	—
B		20	≥47
C		0	≥34
D		-20	≥34
E		-40	≥27

Atmospheric corrosion resistance of Q265GNH steel plate:
High weathering steel is a steel that improves atmospheric corrosion resistance by adding a small amount of alloying elements such as Cu, P, Cr, Ni, etc. to form a protective layer on the surface of the metal substrate.

Q265GNH steel belongs to high weathering steel and is widely used in vehicles, bridges, containers, buildings or other structural parts. Compared with weathering steel, high weathering steel has better atmospheric corrosion resistance.

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