ASTM A519 mechanical tubing 4140 seamless steel pipe

Standard: ASTM A519

ASTM A519 mechanical tubing 4140 seamless steel pipe is alloy steel with molybdenum and chromium and strengthening agents. The addition of molybdenum improves toughness of 4140 seamless steel pipe. And the addition of chromium improves strength and corrosion resistance of 4140 seamless steel pipe. According to ASTM A519 standard, the max. outside diameter size for 4140 seamless steel pipe is 325mm.

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ASTM A519 mechanical tubing 4140 seamless steel pipe is alloy steel with molybdenum and chromium and strengthening agents. The addition of molybdenum improves toughness of 4140 seamless steel pipe. And the addition of chromium improves strength and corrosion resistance of 4140 seamless steel pipe. According to ASTM A519 standard, the max. outside diameter size for 4140 seamless steel pipe is 325mm.

ASTM A519 mechanical tubing 4140 seamless steel pipe chemical composition:

Grade	C	Mn	P	S	Si	Ni	Cr	Mo
4140	0.38-0.43	0.75-1.00	≤0.040	≤0.040	0.15-0.35	-	0.80-1.10	0.15-0.25

ASTM A519 mechanical tubing 4140 seamless steel pipe mechanical properties:

Grade	Condition	Yield strength (MPa)	Ultimate strength (MPa)	Elongation (%), in 2 in. or in 50mm	Rockwell, Hardness B scale
4140	HR	620	825	15	100
	SR	690	825	10	100
	A	415	550	25	85
	N	620	825	20	100

HR: Hot rolled, SR: Stress Relieved or Finish Anneal, A: Annealed, N: Normalized.

ASTM A519 grade 4140 steel equivalents:

USA	EU	Germany	Japan	France	Italy	China
ASTM	EN	DIN,WNr	JIS	AFNOR	UNI	GB
4140	42CrMo4 (1.7225)	42CrMo4	SCM440H	42CD4	42CrMo4	42CrMo
Spain	England	Sweden	Finland	Russia	Inter
UNE	BS	SS	SFS	GOST	ISO
40CrMo4	708M40	2244	42CrMo4	35KHM	42CrMo4
F1252	CFS11			38KHM

ASTM A519 mechanical tubing 4140 seamless steel pipe has high impact resistance, high fatigue strength, superb torsional strength, excellent toughness and very good abrasion resistance. 4140 seamless steel pipe is widely used where high pressure and heavy duty applications required to be performed well. The main application of 4140 seamless steel pipe includes hydraulic cylinders, drilling equipment, aircraft component, truck and automotive parts etc.

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