EN 10025-6 grade S620QL, S620QL steel, S620QL steel sheet - Shanghai Katalor Enterprises Co., Ltd

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EN 10025-6 grade S620QL, S620QL steel, S620QL steel sheet

Posted:2014-11-30 11:45:41

EN 10025-6 steel grade specification is a high yield strength structural steels in the quenched and tempered condition steel plate grade in S460Q, S460QL, S460QL1, S550Q, S550QL, S550QL1, S500Q, S500QL, S500QL1, S960Q, S960QL, S620Q, S620QL, S620QL1, S690Q, S690QL, S690QL1, S890Q, S890QL1 and S890QL steel plate grade.

High yield strength steel plate S620QL under EN 10025-6 owned the minimum yield strength at 620 Mpa and tensile strength within 700-890 Mpa.The necessary technical requirement when rolling steel plate S620QL contains quenching and tempering heat treatment,low temperature impacting test under minus 40 centigrade.The additional technical has Ultrasonic examination.

Carbon Equivalent: CEV=[C+Mn/6+(Cr+Mo+V)/5+(Ni+Cu)/15]%

Thickness, mm	Max CEV based on the ladle analysis
5≤t≤50	0.65%
50＜t≤100	0.77%
100＜t≤150	0.83%

Mechanical Properties of steel grade S620QL at ambient temperature

Grade	Thickness	Yield Strength	Tensile Strength	Elongation	Charpy V Notch Impact Test
					Degree	Min Value
S620QL	mm	Min Mpa	Mpa	Min %	-40℃	J
	5≤t≤50	620	700-890	15%		30
	50＜t≤100	580	700-890			30
	100＜t≤150	560	650-830			30
Note: Impact energy for impact test is on longitudinal

Chemical composition % of the Product analysis of grade S620QL (1.8927)

C	Si	Mn	Ni	P	S	Cr	Mo	V	Nb	Cu	Ni	B	N	Zr	Ti
0.22	0.86	1.8	0.8	0.025	0.012	1.6	0.74	0.14	0.07	0.55	2.1	0.006	0.016	0.17	0.07

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