2019 wholesale price China Torich ASTM A519 20crmo 20cr Seamless Alloy Steel Pipe

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Overview

Application

It Is Mainly Used for mechanical and used to make gas cylinders.include carbon and alloy steel seamless mechanical tubing,and covers both seamless hot-finished mechanical tubing and seamless cold-finished mechanical tubing in sizes up to and including 12 3⁄4 in. (323.8 mm) outside diameter for round tubes with wall thicknesses as required.

Main Grade

1018,1026,8620,4130,4140

Chemical Component

TABLE 1  Chemical Requirements of Low-Carbon Steels

Grade	Chemical Composition Limits, %
Designation	CarbonA		ManganeseB		Phosphorus,B		Sulfur,B
					max		max
MT X 1015	0.10–0.20		0.60–0.90		0.04		0.05
MT 1010	0.05–0.15		0.30–0.60		0.04		0.05
MT 1015	0.10–0.20		0.30–0.60		0.04		0.05
MT 1020	0.15–0.25		0.30–0.60		0.04		0.05
MT X 1020	0.15–0.25		0.70–1.00		0.04		0.05

TABLE 2  Chemical Requirements of Other Carbon Steels^B Limits apply to heat analysis; except as required by 6.1, product analyses are subject to the applicable additional tolerances given in Table 5.

Grade		Chemical Composition Limits, %A
Designation
	Carbon	Manganese	Phosphorus,	Sulfur,
			max	max
1008	0.10 max	0.30–0.50	0.04	0.05
1010	0.08–0.13	0.30–0.60	0.04	0.05
1012	0.10–0.15	0.30–0.60	0.04	0.05
1015	0.13–0.18	0.30–0.60	0.04	0.05
1016	0.13–0.18	0.60–0.90	0.04	0.05
1017	0.15–0.20	0.30–0.60	0.04	0.05
1018	0.15–0.20	0.60–0.90	0.04	0.05
1019	0.15–0.20	0.70–1.00	0.04	0.05
1020	0.18–0.23	0.30–0.60	0.04	0.05
1021	0.18–0.23	0.60–0.90	0.04	0.05
1022	0.18–0.23	0.70–1.00	0.04	0.05
1025	0.22–0.28	0.30–0.60	0.04	0.05
1026	0.22–0.28	0.60–0.90	0.04	0.05
1030	0.28–0.34	0.60–0.90	0.04	0.05
1035	0.32–0.38	0.60–0.90	0.04	0.05
1040	0.37–0.44	0.60–0.90	0.04	0.05
1045	0.43–0.50	0.60–0.90	0.04	0.05
1050	0.48–0.55	0.60–0.90	0.04	0.05
1518	0.15–0.21	1.10–1.40	0.04	0.05
1524	0.19–0.25	1.35–1.65	0.04	0.05
1541	0.36–0.44	1.35–1.65	0.04	0.05

A The ranges and limits given in this table apply to heat analysis; except as required by 6.1, product analyses are subject to the applicable additional toler-ances given in Table Number 5.

TABLE 3  Chemical Requirements for Alloy Steels
NOTE	1—The ranges and limits in this table apply to steel not exceeding 200 in.2 (1290 cm2) in cross-sectional area.
NOTE	2—Small quantities of certain elements are present in alloy steels which are not specified or required. These elements are considered as incidental
and may be present to the following maximum amounts: copper, 0.35 %; nickel, 0.25 %; chromium, 0.20 %; molybdenum, 0.10 %.
NOTE	3—The ranges and limits given in this table apply to heat analysis; except as required by 6.1, product analyses are subject to the applicable
additional tolerances given in Table Number 5.

 

GradeA,B				Chemical Composition Limits, %
Designa-
	Carbon	Manganese	Phospho-	Sulfur,C,D	Silicon	Nickel	Chromium	Molybde-
tion
			rus,Cmax	max				num
1330	0.28–0.33	1.60–1.90	0.04	0.04	0.15–0.35	...	...	...
1335	0.33–0.38	1.60–1.90	0.04	0.04	0.15–0.35	...	...	...
1340	0.38–0.43	1.60–1.90	0.04	0.04	0.15–0.35	...	...	...
1345	0.43–0.48	1.60–1.90	0.04	0.04	0.15–0.35	...	...	...
3140	0.38–0.43	0.70–0.90	0.04	0.04	0.15–0.35	1.10–1.40	0.55–0.75	...
E3310	0.08–0.13	0.45–0.60	0.025	0.025	0.15–0.35	3.25–3.75	1.40–1.75	...
4012	0.09–0.14	0.75–1.00	0.04	0.04	0.15–0.35	...	...	0.15–0.25
4023	0.20–0.25	0.70–0.90	0.04	0.04	0.15–0.35	...	...	0.20–0.30
4024	0.20–0.25	0.70–0.90	0.04	0.035−0.050	0.15–0.35	...	...	0.20–0.30
4027	0.25–0.30	0.70–0.90	0.04	0.04	0.15–0.35	...	...	0.20–0.30
4028	0.25–0.30	0.70–0.90	0.04	0.035−0.050	0.15–0.35	...	...	0.20–0.30
4037	0.35–0.40	0.70–0.90	0.04	0.04	0.15–0.35	...	...	0.20–0.30
4042	0.40–0.45	0.70–0.90	0.04	0.04	0.15–0.35	...	...	0.20–0.30
4047	0.45–0.50	0.70–0.90	0.04	0.04	0.15–0.35	...	...	0.20–0.30
4063	0.60–0.67	0.75–1.00	0.04	0.04	0.15–0.35	...	...	0.20–0.30
4118	0.18–0.23	0.70–0.90	0.04	0.04	0.15–0.35	...	0.40–0.60	0.08–0.15
4130	0.28–0.33	0.40–0.60	0.04	0.04	0.15–0.35	...	0.80–1.10	0.15–0.25
4135	0.32–0.39	0.65–0.95	0.04	0.04	0.15–0.35	...	0.80–1.10	0.15–0.25
4137	0.35–0.40	0.70–0.90	0.04	0.04	0.15–0.35	...	0.80–1.10	0.15–0.25
4140	0.38–0.43	0.75–1.00	0.04	0.04	0.15–0.35	...	0.80–1.10	0.15–0.25
4142	0.40–0.45	0.75–1.00	0.04	0.04	0.15–0.35	...	0.80–1.10	0.15–0.25
4145	0.43–0.48	0.75–1.00	0.04	0.04	0.15–0.35	...	0.80–1.10	0.15–0.25
4147	0.45–0.50	0.75–1.00	0.04	0.04	0.15–0.35	...	0.80–1.10	0.15–0.25
4150	0.48–0.53	0.75–1.00	0.04	0.04	0.15–0.35	...	0.80–1.10	0.15–0.25
4320	0.17–0.22	0.45–0.65	0.04	0.04	0.15–0.35	1.65–2.00	0.40–0.60	0.20–0.30
4337	0.35–0.40	0.60–0.80	0.04	0.04	0.15–0.35	1.65–2.00	0.70–0.90	0.20–0.30
E4337	0.35–0.40	0.65–0.85	0.025	0.025	0.15–0.35	1.65–2.00	0.70–0.90	0.20–0.30
4340	0.38–0.43	0.60–0.80	0.04	0.04	0.15–0.35	1.65–2.00	0.70–0.90	0.20–0.30
E4340	0.38–0.43	0.65–0.85	0.025	0.025	0.15–0.35	1.65–2.00	0.70–0.90	0.20–0.30
4422	0.20–0.25	0.70–0.90	0.04	0.04	0.15–0.35	...	...	0.35–0.45
4427	0.24–0.29	0.70–0.90	0.04	0.04	0.15–0.35	...	...	0.35–0.45
4520	0.18–0.23	0.45–0.65	0.04	0.04	0.15–0.35	...	...	0.45–0.60
4615	0.13–0.18	0.45–0.65	0.04	0.04	0.15–0.35	1.65–2.00	...	0.20–0.30
4617	0.15–0.20	0.45–0.65	0.04	0.04	0.15–0.35	1.65–2.00	...	0.20–0.30
4620	0.17–0.22	0.45–0.65	0.04	0.04	0.15–0.35	1.65–2.00	...	0.20–0.30
4621	0.18–0.23	0.70–0.90	0.04	0.04	0.15–0.35	1.65–2.00	...	0.20–0.30
4718	0.16–0.21	0.70–0.90	0.04	0.04	0.15–0.35	0.90–1.20	0.35–0.55	0.30–0.40
4720	0.17–0.22	0.50–0.70	0.04	0.04	0.15–0.35	0.90–1.20	0.35–0.55	0.15–0.25
4815	0.13–0.18	0.40–0.60	0.04	0.04	0.15–0.35	3.25–3.75	...	0.20–0.30
4817	0.15–0.20	0.40–0.60	0.04	0.04	0.15–0.35	3.25–3.75	...	0.20–0.30
4820	0.18–0.23	0.50–0.70	0.04	0.04	0.15–0.35	3.25–3.75	...	0.20–0.30
5015	0.12–0.17	0.30–0.50	0.04	0.04	0.15–0.35	...	0.30–0.50	...
5046	0.43–0.50	0.75–1.00	0.04	0.04	0.15–0.35	...	0.20–0.35	...
5115	0.13–0.18	0.70–0.90	0.04	0.04	0.15–0.35	...	0.70–0.90	...
5120	0.17–0.22	0.70–0.90	0.04	0.04	0.15–0.35	...	0.70–0.90	...
5130	0.28–0.33	0.70–0.90	0.04	0.04	0.15–0.35	...	0.80–1.10	...
5132	0.30–0.35	0.60–0.80	0.04	0.04	0.15–0.35	...	0.75–1.00	...
5135	0.33–0.38	0.60–0.80	0.04	0.04	0.15–0.35	...	0.80–1.05	...
5140	0.38–0.43	0.70–0.90	0.04	0.04	0.15–0.35	...	0.70–0.90	...
5145	0.43–0.48	0.70–0.90	0.04	0.04	0.15–0.35	...	0.70–0.90	...
5147	0.46–0.51	0.70–0.95	0.04	0.04	0.15–0.35	...	0.85–1.15	...
5150	0.48–0.53	0.70–0.90	0.04	0.04	0.15–0.35	...	0.70–0.90	...
5155	0.51–0.59	0.70–0.90	0.04	0.04	0.15–0.35	...	0.70–0.90	...
5160	0.56–0.64	0.75–1.00	0.04	0.04	0.15–0.35	...	0.70–0.90	...
52100E	0.93–1.05	0.25–0.45	0.025	0.015	0.15–0.35	0.25 max	1.35–1.60	0.10 max
E50100	0.98–1.10	0.25–0.45	0.025	0.025	0.15–0.35	...	0.40–0.60	...
E51100	0.98–1.10	0.25–0.45	0.025	0.025	0.15–0.35	...	0.90–1.15	...
E52100	0.98–1.10	0.25–0.45	0.025	0.025	0.15–0.35	...	1.30–1.60	...
								Vanadium
6118	0.16–0.21	0.50–0.70	0.04	0.04	0.15–0.35	...	0.50–0.70	0.10–0.15
6120	0.17–0.22	0.70–0.90	0.04	0.04	0.15–0.35	...	0.70–0.90	0.10 min
6150	0.48–0.53	0.70–0.90	0.04	0.04	0.15–0.35	...	0.80–1.10	0.15 min
						Aluminum		Molybdenum
E7140	0.38–0.43	0.50–0.70	0.025	0.025	0.15–0.40	0.95–1.30	1.40–1.80	0.30–0.40
						Nickel
8115	0.13–0.18	0.70–0.90	0.04	0.04	0.15–0.35	0.20–0.40	0.30–0.50	0.08–0.15
8615	0.13–0.18	0.70–0.90	0.04	0.04	0.15–0.35	0.40–0.70	0.40–0.60	0.15–0.25
8617	0.15–0.20	0.70–0.90	0.04	0.04	0.15–0.35	0.40–0.70	0.40–0.60	0.15–0.25
8620	0.18–0.23	0.70–0.90	0.04	0.04	0.15–0.35	0.40–0.70	0.40–0.60	0.15–0.25
8622	0.20–0.25	0.70–0.90	0.04	0.04	0.15–0.35	0.40–0.70	0.40–0.60	0.15–0.25
8625	0.23–0.28	0.70–0.90	0.04	0.04	0.15–0.35	0.40–0.70	0.40–0.60	0.15–0.25
8627	0.25–0.30	0.70–0.90	0.04	0.04	0.15–0.35	0.40–0.70	0.40–0.60	0.15–0.25
8630	0.28–0.33	0.70–0.90	0.04	0.04	0.15–0.35	0.40–0.70	0.40–0.60	0.15–0.25
8637	0.35–0.40	0.75–1.00	0.04	0.04	0.15–0.35	0.40–0.70	0.40–0.60	0.15–0.25
8640	0.38–0.43	0.75–1.00	0.04	0.04	0.15–0.35	0.40–0.70	0.40–0.60	0.15–0.25
8642	0.40–0.45	0.75–1.00	0.04	0.04	0.15–0.35	0.40–0.70	0.40–0.60	0.15–0.25
8645	0.43–0.48	0.75–1.00	0.04	0.04	0.15–0.35	0.40–0.70	0.40–0.60	0.15–0.25
8650	0.48–0.53	0.75–1.00	0.04	0.04	0.15–0.35	0.40–0.70	0.40–0.60	0.15–0.25
8655	0.51–0.59	0.75–1.00	0.04	0.04	0.15–0.35	0.40–0.70	0.40–0.60	0.15–0.25
8660	0.55–0.65	0.75–1.00	0.04	0.04	0.15–0.35	0.40–0.70	0.40–0.60	0.15–0.25
8720	0.18–0.23	0.70–0.90	0.04	0.04	0.15–0.35	0.40–0.70	0.40–0.60	0.20–0.30
8735	0.33–0.38	0.75–1.00	0.04	0.04	0.15–0.35	0.40–0.70	0.40–0.60	0.20–0.30
8740	0.38–0.43	0.75–1.00	0.04	0.04	0.15–0.35	0.40–0.70	0.40–0.60	0.20–0.30
8742	0.40–0.45	0.75–1.00	0.04	0.04	0.15–0.35	0.40–0.70	0.40–0.60	0.20–0.30
8822	0.20–0.25	0.75–1.00	0.04	0.04	0.15–0.35	0.40–0.70	0.40–0.60	0.30–0.40
9255	0.51–0.59	0.60–0.80	0.04	0.04	1.80–2.20	...	0.60–0.80	...
9260	0.56–0.64	0.75–1.00	0.04	0.04	1.80–2.20	...	...	...
9262	0.55–0.65	0.75–1.00	0.04	0.04	1.80–2.20	...	0.25–0.40	...
E9310	0.08–0.13	0.45–0.65	0.025	0.025	0.15–0.35	3.00–3.50	1.00–1.40	0.08–0.15
9840	0.38–0.42	0.70–0.90	0.04	0.04	0.15–0.35	0.85–1.15	0.70–0.90	0.20–0.30
9850	0.48–0.53	0.70–0.90	0.04	0.04	0.15–0.35	0.85–1.15	0.70–0.90	0.20–0.30
50B40	0.38–0.42	0.75–1.00	0.04	0.04	0.15–0.35	...	0.40–0.60	...
50B44	0.43–0.48	0.75–1.00	0.04	0.04	0.15–0.35	...	0.40–0.60	...
50B46	0.43–0.50	0.75–1.00	0.04	0.04	0.15–0.35	...	0.20–0.35	...
50B50	0.48–0.53	0.74–1.00	0.04	0.04	0.15–0.35	...	0.40–0.60	...
50B60	0.55–0.65	0.75–1.00	0.04	0.04	0.15–0.35	...	0.40–0.60	...
51B60	0.56–0.64	0.75–1.00	0.04	0.04	0.15–0.35	...	0.70–0.90	...
81B45	0.43–0.48	0.75–1.00	0.04	0.04	0.15–0.35	0.20–0.40	0.35–0.55	0.08–0.15
86B45	0.43–0.48	0.75–1.00	0.04	0.04	0.15–0.35	0.40–0.70	0.40–0.60	0.15–0.25
94B15	0.13–0.18	0.75–1.00	0.04	0.04	0.15–0.35	0.30–0.60	0.30–0.50	0.08–0.15
94B17	0.15–0.20	0.75–1.00	0.04	0.04	0.15–0.35	0.30–0.60	0.30–0.50	0.08–0.15
94B30	0.28–0.33	0.75–1.00	0.04	0.04	0.15–0.35	0.30–0.60	0.30–0.50	0.08–0.15
94B40	0.38–0.43	0.75–1.00	0.04	0.04	0.15–0.35	0.30–0.60	0.30–0.50	0.08–0.15

^B Grades shown in this table with the letter B, such as 50B40, can be expected to have 0.0005 % minimum boron control. ^A  Grades shown in this table with prefix letter E generally are manufactured by the basic-electric-furnace process. All others are normally manufactured by the basic-open-hearth process but may be manufactured by the basic-electric-furnace process with adjustments in phosphorus and sulfur.

 

^C  The phosphorus sulfur limitations for each process are as follows:

Basic electric furnace         0.025 max %         Acid electric furnace          0.050 max %

Basic open hearth            0.040 max %          Acid open hearth             0.050 max %

^D Minimum and maximum sulfur content indicates resulfurized steels.

^EThe purchaser may specify the following maximum amounts: copper, 0.30 %; aluminum, 0.050 %; and oxygen, 0.0015 %.

 

Mechanical Property

Typical Tensile Properties, Hardness and Thermal Condition for some of the More Common Grades of Carbon and Alloy Steels

  CW—Cold Worked SR—Stress Relieved A—Annealed N—NormalizedA       The following are the symbol definitions for the various conditions: HR—Hot Rolle

Grade		Condi-	Ultimate		Yield		Elongation	Rockwell,
Desig-		tionA	Strength,		Strength,		in 2 in. or	Hardness
nation							50 mm, %	B Scale
			ksi	MPa	ksi	MPa
1020		HR	50	345	32	221	25	55
		CW	70	483	60	414	5	75
		SR	65	448	50	345	10	72
		A	48	331	28	193	30	50
		N	55	379	34	234	22	60
1025		HR	55	379	35	241	25	60
		CW	75	517	65	448	5	80
		SR	70	483	55	379	8	75
		A	53	365	30	207	25	57
		N	55	379	36	248	22	60
1035		HR	65	448	40	276	20	72
		CW	85	586	75	517	5	88
		SR	75	517	65	448	8	80
		A	60	414	33	228	25	67
		N	65	448	40	276	20	72
1045		HR	75	517	45	310	15	80
		CW	90	621	80	552	5	90
		SR	80	552	70	483	8	85
		A	65	448	35	241	20	72
		N	75	517	48	331	15	80
1050		HR	80	552	50	345	10	85
		SR	82	565	70	483	6	86
		A	68	469	38	262	18	74
		N	78	538	50	345	12	82
1118		HR	50	345	35	241	25	55
		CW	75	517	60	414	5	80
		SR	70	483	55	379	8	75
		A	50	345	30	207	25	55
		N	55	379	35	241	20	60
1137		HR	70	483	40	276	20	75
		CW	80	552	65	448	5	85
		SR	75	517	60	414	8	80
		A	65	448	35	241	22	72
		N	70	483	43	296	15	75
4130		HR	90	621	70	483	20	89
		SR	105	724	85	586	10	95
		A	75	517	55	379	30	81
		N	90	621	60	414	20	89
4140		HR	120	855	90	621	15	100
		SR	120	855	100	689	10	100
		A	80	552	60	414	25	85
		N	120	855	90	621	20	100

d

Tolerance

Outside Diameter Tolerances for Round Hot-Finished Tubing^A,B,C

 

Outside Diameter Size Range,		Outside Diameter Tolerance, in. (mm)
	in. (mm)	Over	Under
Up to 2.999 (76.17)		0.020 (0.51)	0.020 (0.51)
3.000–4.499 (76.20–114.27)		0.025 (0.64)	0.025 (0.64)
4.500–5.999 (114.30–152.37)		0.031 (0.79)	0.031 (0.79)
6.000–7.499 (152.40–190.47)		0.037 (0.94)	0.037 (0.94)
7.500–8.999 (190.50–228.57)		0.045 (1.14)	0.045 (1.14)
9.000–10.750 (228.60–273.05)		0.050 (1.27)	0.050 (1.27)

  A Diameter tolerances are not applicable to normalized and tempered or quenched and tempered conditions. B The common range of sizes of hot finished tubes is 1¹⁄2 in. (38.1 mm) to 10³⁄4 in. (273.0 mm) outside diameter with wall thickness at least 3 % or more of outside diameter, but not less than 0.095 in. (2.41 mm). C Larger sizes are available; consult manufacturer for sizes and tolerances.  

Wall Thickness Tolerances for Round Hot-Finished

Tubing

   

Wall Thickness	Wall Thickness Tolerance,A percent Over
Range as Percent		and Under Nominal
of Outside
	Outside	Outside	Outside
Diameter
	Diameter	Diameter	Diameter
	2.999 in.	3.000 in.	6.000 in.
	(76.19 mm)	(76.20 mm)	(152.40 mm)
	and smaller	to 5.999 in.	to 10.750 in.
		(152.37 mm)	(273.05 mm)
Under 15	12.5	10.0	10.0
15 and over	10.0	7.5	10.0

A Wall thickness tolerances may not be applicable to walls 0.199 in. (5.05 mm) and less; consult manufacturer for wall tolerances on such tube sizes. a more important dimension, then cold-worked tubing should be specified to inside diameter and wall thickness or outside diameter and inside diameter. Rough-Turned Mechanical Tubing—Variation in outside diameter and wall thickness shall not exceed the tolerance in Table. Table  covers tolerances as applied to outside diameter and wall thickness and applies to the specified size. Ground Mechanical Tubing—Variation in outside diam-eter shall not exceed the tolerances in Table. This product is normally produced from a cold-worked tube. Lengths—Mechanical tubing is commonly furnished in mill lengths, 5 ft (1.5 m) and over. Definite cut lengths are furnished when specified by the purchaser. Length tolerances are shown in Table . Straightness—The straightness tolerances for seamless round tubing shall not exceed the amounts shown in Table.  

Test Requirement

1.Hardness Test When hardness limits are required, the manufacturer shall be consulted. Typical hardnesses are listed in Table .When specified, the hardness test shall be performed on 1 % of the tubes. 2.Tension Tests When tensile properties are required, the manufacturer shall be consulted. Typical tensile properties for some of the more common grades and thermal conditions are listed in table. 3.Nondestructive Tests Various types of nondestructive ultrasonic or electromagnetic tests are available. The test to be used and the inspection limits shall be established by manufacturer and purchaser agreement. 4.Flaring Test When there are special requirements for steel cleanliness, the methods of test and limits of acceptance shall be established by manufacturer and purchaser agreement.

Product Detail

Mechanical/Chemical&Fertilizer Pipes

GB/T8162-2008

ASTM A519-2006

BS EN 10210-1-2006

ASTM A53/A53M-2012

GB9948-2006

GB6479-2013

GB/T 17396-2009