API 5L

Grades and Specifications for API 5L Pipe

The range of API 5L levels

PSL2 C	CEPCM=	C	Si/30	Mn/20	Cu/20	Ni/60
PSL2 C	0	0	0	0	0	0
PSL2 C>0.12%	CEnw=	C	Mn/6	(Cr+Mo+V)/5
PSL2 C>0.12%	0	0	0		0

PSL1 SMLS Chemical Content( Max/%) Pipe Thickness Equal or Under 25.0mm(0.984Inch)
	C	Mn	P	S	V	Nb	Ti
A	0.22	0.9	0.03	0.03
B	0.28	1.2	0.03	0.03
X42	0.28	1.3	0.03	0.03
X46	0.28	1.4	0.03	0.03
X52	0.28	1.4	0.03	0.03
X56	0.28	1.4	0.03	0.03
X60	0.28	1.4	0.03	0.03
X65	0.28	1.4	0.03	0.03
X70	0.28	1.4	0.03	0.03

PSL1 Welded Chemical Content( Max/%) Pipe Thickness Equal or Under 25.0mm(0.984Inch)
	C	Mn	P	S	V	Nb	Ti
A	0.22	0.9	0.03	0.03
B	0.26	1.2	0.03	0.03
X42	0.26	1.3	0.03	0.03
X46	0.26	1.4	0.03	0.03
X52	0.26	1.4	0.03	0.03
X56	0.26	1.4	0.03	0.03
X60	0.26	1.4	0.03	0.03
X65	0.26	1.45	0.03	0.03
X70	0.26	1.65	0.03	0.03
PSL2 SMLS and Welded Chemical Content( Max/%)Pipe Thickness Equal or Under Service
	C	Si	Mn	P	S	V	Nb
BR	0.24	0.4	1.2	0.025	0.015
X42R	0.24	0.4	1.2	0.025	0.015	0.06	0.05
BN	0.24	0.4	1.2	0.025	0.015
X42N	0.24	0.4	1.2	0.025	0.015	0.06	0.05
X46N	0.24	0.4	1.4	0.025	0.015	0.07	0.05
X52N	0.24	0.45	1.4	0.025	0.015	0.1	0.05
X56N	0.24	0.45	1.4	0.025	0.015	0.1	0.05
X60N	0.24	0.45	1.4	0.025	0.015	0.1	0.05
BQ	0.18	0.45	1.4	0.025	0.015	0.05	0.05
X42Q	0.18	0.45	1.4	0.025	0.015	0.05	0.05
X46Q	0.18	0.45	1.4	0.025	0.015	0.05	0.05
X52Q	0.18	0.45	1.5	0.025	0.015	0.05	0.05
X56Q	0.18	0.45	1.5	0.025	0.015	0.07	0.05
X60Q	0.18	0.45	1.7	0.025	0.015
X65Q	0.18	0.45	1.7	0.025	0.015
X70Q	0.18	0.45	1.8	0.025	0.015
X80Q	0.18	0.45	1.9	0.025	0.015

PSL2 Welded Chemical Content(Max/%) Pipe Thickness Equal or Under Service
	C	Si	Mn	P	S	V	Nb
BM	0.22	0.45	1.2	0.025	0.015	0.05	0.05
X42M	0.22	0.45	1.3	0.025	0.015	0.05	0.05
X46M	0.22	0.45	1.3	0.025	0.015	0.05	0.05
X52M	0.22	0.45	1.4	0.025	0.015
X56M	0.22	0.45	1.4	0.025	0.015
X60M	0.12	0.45	1.6	0.025	0.015
X65M	0.12	0.45	1.6	0.025	0.015
X70M	0.12	0.45	1.7	0.025	0.015
X80M	0.12	0.45	1.85	0.025	0.015
X90M	0.1	0.55	2.1	0.02	0.01
X100M	0.1	0.55	2.1	0.02	0.01
X120M	0.1	0.55	2.1	0.02	0.01

PSL2 SMLS/Welded Chemical Content(Max/%)Pipe Thickness Equal or Under Service
	C	Si	Mn	P	S	V	Nb
BNS	0.14	0.4	1.35	0.02	0.003
X42NS	0.14	0.4	1.35	0.02	0.003	0.05	0.05
X46NS	0.14	0.4	1.4	0.02	0.003	0.07	0.05
X52NS	0.16	0.45	1.65	0.02	0.003	0.1	0.05
BQS	0.14	0.4	1.35	0.02	0.003	0.04	0.04
X42QS	0.14	0.4	1.35	0.02	0.003	0.04	0.04
X46QS	0.15	0.45	1.4	0.02	0.003	0.05	0.05
X52QS	0.16	0.45	1.65	0.02	0.003	0.07	0.05
X56QS	0.16	0.45	1.65	0.02	0.003	0.07	0.05
X60QS	0.16	0.45	1.65	0.02	0.003	0.08	0.05
X65QS	0.16	0.45	1.65	0.02	0.003	0.09	0.05
X70QS	0.16	0.45	1.65	0.02	0.003	0.09	0.05
PSL2 Welded Chemical Content(Max/%) Pipe Thickness Equal or Under 25.0mm
	C	Si	Mn	P	S	V	Nb
BMS	0.1	0.4	1.25	0.02	0.002	0.04	0.04
X42MS	0.1	0.4	1.25	0.02	0.002	0.04	0.04
X46MS	0.1	0.45	1.35	0.02	0.002	0.05	0.05
X52MS	0.1	0.45	1.45	0.02	0.002	0.05	0.06
X56MS	0.1	0.45	1.45	0.02	0.002	0.06	0.08
X60MS	0.1	0.45	1.45	0.02	0.002	0.08	0.08
X65MS	0.1	0.45	1.6	0.02	0.002	0.1	0.08
X70MS	0.1	0.45	1.6	0.02	0.002	0.1	0.08
CFor every reduction of 0.01%, manganese can be increased by 0.05%, but the maximum increase is 0.2%

PSL2 SMLS/Welded Chemical Content(Max/%)Pipe Thickness Equal or Under 25.0mm
	C	Si	Mn	P	S	V	Nb
BN0	0.14	0.4	1.35	0.02	0.01
X42N0	0.14	0.4	1.35	0.02	0.01	0.05	0.05
X46N0	0.14	0.4	1.4	0.02	0.01	0.07	0.05
X52N0	0.16	0.45	1.65	0.02	0.01	0.1	0.05
BQ0	0.14	0.4	1.35	0.02	0.01	0.04	0.04
X42Q0	0.14	0.4	1.35	0.02	0.01	0.04	0.04
X46Q0	0.15	0.45	1.4	0.02	0.01	0.05	0.05
X52Q0	0.16	0.45	1.65	0.02	0.01	0.07	0.05
X56Q0	0.16	0.45	1.65	0.02	0.01	0.07	0.05
X60Q0	0.16	0.45	1.65	0.02	0.01	0.08	0.05
X65Q0	0.16	0.45	1.65	0.02	0.01	0.09	0.05
X70Q0	0.17	0.45	1.75	0.02	0.01	0.1	0.05
PSL2 SMLS/Welded Chemical Content(Max/%)Pipe Thickness Equal or Under 25.0mm
	C	Si	Mn	P	S	V	Nb
BM0	0.12	0.4	1.25	0.02	0.01	0.04	0.04
X42M0	0.12	0.4	1.35	0.02	0.01	0.04	0.04
X46M0	0.12	0.45	1.35	0.02	0.01	0.05	0.05
X52M0	0.12	0.45	1.65	0.02	0.01	0.05	0.05
X56M0	0.12	0.45	1.65	0.02	0.01	0.06	0.08
X60M0	0.12	0.45	1.65	0.02	0.01	0.08	0.08
X65M0	0.12	0.45	1.65	0.02	0.01	0.1	0.08
X70M0	0.12	0.45	1.75	0.02	0.01	0.1	0.08
X80M0	0.12	0.45	1.85	0.02	0.01	0.1	0.08

total≤0.06%, N≤0.012%, Al/N≥2:1 (not applicable to Ti-killed or Ti-treated steel), Cu≤0.35%, (if acceptable, Cu≤0.1%), Ni≤0.3% , the maximum concentration limit for S in seamless pipes can be ≤0.008%, and for welded pipes can be ≤0.006%

Tensile Properties PSL1
	Pipe in SMLS and Welded						Weld S
	Yield Strength Rt0.5 MPa(psi)Min.		Tensile Strength Rm Mpa(psi)Min.		Elongation Af % Min.		Tensile Str Mpa (psi)
A	210	30,500	335	48,600			335
BR	245	35,500	415	60,200			415
B	245	35,500	415	60.200			415
X42R	290	42,100	415	60,200			415
X42	290	42,100	415	60,200			415
X46	320	46,400	435	63,100			435
X52	360	52,200	460	66,700			460
X56	390	56,600	490	71,100			490
X60	415	60,200	520	75,400			520
X65	450	65,300	535	77,600			535
X70	485	70,300	570	82,700			570

Tensile Properties PSL2
	Pipe in SMLS and Welded	Weld S
R,N,Q,M	Yield Strength Rt0.5 MPa(psi)		Tensile Strength Rm Mpa(psi)		Ratio Rt0.5IRm	Elongation Af %	Tensile Str Mpa (p
	Min.	Max.	Min	Max.	Max.	Min.	Min.
B(RNQM)	245 (35,500)	450 (65,300)	415 (60,200)	760 (110,200)	0.93		415 (60,200)
X42(RNQM)	290 (42,100)	495 (71,800)	415 (60,200)	760 (110,200)	0.93		415 (60,200)
X46(NQM)	320 (46,400)	525 (76,100)	435 (63,100)	760 (110,200)	0.93		435 (63,100)
X52(NQM)	360 (52,200)	530 (76,900)	460 (66,700)	760 (110,200)	0.93		460 (66,700)
X56(NQM)	390 (56,600)	545 (79,000)	490 (71,100)	760 (110,200)	0.93		490 (71,100)
X60(NQM)	415 (60,200)	565 (81,900)	520 (75,400)	760 (110,200)	0.93		520 (75,400)
X65(QM)	450 (65,300)	600 (87,000)	535 (77,600)	760 (110,200)	0.93		535 (77,600)
X70(QM)	485 (70,300)	635 (92,100)	570 (82,700)	760 (110,200)	0.93		570 (82,700)
X80(QM)	555 (80,500)	705 (102,300)	625 (90,600)	825 (119,700)	0.93		625 (90,600)
X90(M)	625 (90,600)	775 (112,400)	695 (100,800)	915 (132,700)	0.95		695 (100,800)
X100(M)	690 (100,100)	840 (121,800)	760 (110,200)	990 (143,600)	0.97		760 (110,200)
X120(M)	830 (120,400)	1050 (152,300)	915 (132,700)	1145 (166,100)	0.99		915 (132,700)

CVN Impact Test 0℃(32F)
Out Diameter	Full-size CVN absorbed energy Min. KV J(ft-lbf)
mm(In)	≤X60	X60<,≤X65	X65<,≤X70	X70<,≤X80	X80<,≤X90	X90<,≤X100	X100<,≤X120
≤508(20)	27(20	27(20)	27(20)	40(30)	40(30)	40(30)	40(30)
508(20)<, ≤762(30)	27(20)	27(20)	27(20)	40(30)	40(30)	40(30)	40(30)
762(30)<, ≤914(36)	40(30)	40(30)	40(30)	40(30)	40(30)	54(40)	54(40)
914(36)<, ≤1219(48)	40(30)	40(30)	40(30)	40(30)	40(30)	54(40)	68(50)
1219(48)<, ≤1422(56)	40(30)	54(40)	54(40)	54(40)	54(40)	68(50)	81(60)
1422(56)<, ≤2134(84)	40(30)	54(40)	68(50)	68(50)	81(60)	95(70)	108(80)

Water pressure: The pressure stabilization time of all seamless pipes and welded pipes less than or equal to 457MM is not less than 5 seconds, and the pressure stabilization time of welded pipes larger than 457MM is not less than 10 seconds

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