QSTE650TM,QSTE650TM steel plate,QSTE650TM steel sheet,QSTE650TM steel supplier

QSTE650TM steel for automobile beams have high strength and good bending performance, which is suitable for beam parts.

QSTE650TM steel Mechanical Properties

Grade	Yield strength (MPa)	Tensile strength (MPa)	Elongation (%)		180 degree cold bend, diameter
			Thickness＜3mm Lo=80mm, b=20mm	Thickness≥3mm L0=5.65√S0
QSTE650TM	≥650	700-880	≥10	≥12	2.0a

Remarks  ：

1 . The yiels strength of 650MPa and 700MPa with thickness ＞8mm can be 20MPa lower .

2 . Samples for the tensile test are taken in rolling direction. Samples for cold bend test are taken transversely .

QSTE650TM steel Chemical composition %

Grade	C	Si	Mn	p	S	Al	Nb	V	Ti	Mo
QSTE650TM	≤0.10	≤0..50	≤2.00	≤0.025	≤0.010	≥0.015	≤0.09	≤0.20	≤0.15

Remarks : Nb + V + Ti ≤0.22%

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