Physical and Chemical Properties of Spiral Steel_螺旋鋼管廠|防腐鋼管生產廠家|滄州市螺旋鋼管集團有限公司

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Physical and Chemical Properties of Spiral Steel

Release date：2016-11-01

standard	Steel grade	chemical composition						Tensile properties						Charpy
		C	Mn	P	S	Si	other
		max	max	max	max	max	other	min	max	min	max	D≤168.3mm	D>168.3mm
GB/T3091-2008	Q215A	≤0.15	0.25<1.20	0.045	0.050	0.35	- - - - Nb\v\Ti See you GB/T1591-94	215	-	335	-	15	＞31	-
	Q215B	≤0.15	0.25-0.55	0.045	0.045	0.35		215		335		15	＞31
	Q235A	≤0.22	0.30-0.65	0.045	0.050	0.35		235		375		15	＞26
	Q235B	≤0.20	0.30≤1.80	0.045	0.045	0.35		235		375		15	＞26
	Q295A	0.16	0.80-1.50	0.045	0.045	0.55		295		390		13	＞23
	Q295B	0.16	0.80-1.50	0.040	0.040	0.55		295		390		13	＞23
	Q345A	0.20	1.00-1.60	0.045	0.045	0.55		345		510		13	＞21
	Q345B	0.20	1.00-1.60	0.040	0.040	0.55		345		510		13	＞21
GB/T9711.1-1997	L175	0.21	0.60	0.030	0.030	-	Nb \ v \ Ti can be added to one of the three elements or any combination	175	-	315	825	27		The choice of impact energy and shear area of one or two toughness index L555 see the standard
	L210	0.21	0.90	0.030	0.030			210		335		25
	L245	0.26	1.15	0.030	0.030			245		415		21
	L290	0.28	1.25	0.030	0.030			290		415		21
	L320	0.30	1.25	0.030	0.030			320		435		20
	L360	0.30	1.25	0.030	0.030			360		460		19
	L390	0.26	1.35	0.030	0.030			390		490		18
	L415	0.26	1.35	0.030	0.030			415		520		17
	L450	0.26	1.40	0.030	0.030			450		535		17
	L485	0.23	1.60	0.030	0.030			485		570		16
	L555	0.18	1.80	0.030	0.030			555		625		15
AP1 5L（PSL1）						(Timax)	Nb + V + Ti ≤ 0.15% Grade B Nb + V ≤ 0.03% Steel ≥ Grade B, (Niovium Vanadium Titanium or combinations maybe Usde but Nb + V + Ti ≤ 0.15%		-		-			Not required or can be selected impact energy and shear area of one or two toughness drama