AISI 4340 36CrNiMo4/1.6511 En24/817m40 Sncm439/Sncm8 Special Steel Axis Forgings

Min.Order: 10

Product origin: Beijing, China

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US$ 10000

Description

Product Description

AISI 4340 36CrNiMo4/1.6511 EN24/817M40 Sncm439/Sncm8 Special Steel Axis Forgings

1: 4340 steel introduction
AISI 4340 steel is a medium carbon, low alloy steel known for its toughness and strength in relatively large sections. AISI 4340 is also one kind of nickel chromium molybdenum steels. 4340 alloy steel is generally supplied hardened and tempered in the tensile range of 930 - 1080 Mpa. Pre hardened and tempered 4340 steels can be further surface hardened by flame or induction hardening and by nitriding. The 4340 steel has good shock and impact resistance as well as wear and abrasion resistance in the hardened condition. AISI 4340 steel properties offer good ductility in the annealed condition, allowing it to be bent or formed. Fusion and resistance welding is also possible with our 4340 alloy steel. ASTM 4340 material is often utilized where other alloy steels do not have the hardenability to give the strength required. For highly stressed parts it is excellent choice. AISI 4340 alloy steel can also be machined by all customary methods.

2: 4340 Steel equivalent

Country	Japan	Germany	Britain	USA
Standard	JIS G4103	EN10250	BS970	ASTM A29
Grade	SNCM439	36CrNiMo4/1.6511	EN24/817M40	4340

3: 4340 steel chemical composition

Grade	C	Si	Mn	P	S	Cr	Mo	Ni
4340	0.38-0.43	0.15-0.35	0.6-0.8	0.035	0.04	0.7-09	0.2-0.3	1.65-2.0
36CrNiMo4	0.32-0.4	0.4	0.5-0.8	0.035	0.035	0.9-1.2	0.15-0.3
EN24	0.36-0.44	0.1-0.4	0.45-0.7	0.035	0.04	1.0-1.4	0.2-0.35	1.3-1.7
SNCM439	0.36-0.43	0.15-0.35	0.6-0.9	0.03	0.03	0.6-1.0	0.15-0.3	1.6-2.0

4: 4340 steel mechanical properties
The mechanical properties mainly include tensile strength, yield strength, elongation, area or reduction, hardness, impact value, non-metalic inclusion etc. Different heat treatment, the mechanical properties will be different, such as normalized, tempered, QT. More details, kindly contact us.

Steel material for shaft and forging parts:

Engineering Steel
GB GB/T 700	JIS JIS G3101	DIN (W-Nr.) EN10025-2 / DIN17100	AISI/ASTM ASTM A36	BS	OTHERS
Q235B	SS400	S235JR / RST37-2	A36
Q235C		S235J0 / ST37-3 U
Q235D		S235J2
GB GB/T1591	JIS	DIN (W-Nr.) EN10025-2 / DIN17100	AISI/ASTM	BS	OTHERS
Q355B		S355JR
Q355C		S355J0 / ST52-3U
Q355D		S355J2 / ST52-3 N
Q355E		S355K2
GB GB/T 699	JIS JIS G4051	DIN (W-Nr.) EN 10083-2	AISI/ASTM ASTM A20	BS	OTHERS
			1018	EN2C
20	S20C	C20	1020	EN3B/070M20	ASTM A105
35	S35C	C30	1035
45	S45C	C45E/1.1191	1045	EN8D/080M40
50	S50C	C50/1.1206	1050	080M50
55	S55C	C55	1055	EN9/070M55
GB GB/T 3077	JIS JIS G4105/JIS G4103	DIN (W-Nr.) EN 10250	AISI/ASTM ASTM A29	BS BS 970	OTHERS
40Cr	SCr440	41Cr4(1.7035)	5140
15CrMo	SCM415	16CrMo44/1.7337
20CrMo	SCM420	18CrMo4/1.7243	4118
30CrMo	SCM430	25CrMo4/1.7218	4130	708A25/708M25
42CrMo	SCM440	42crmo4/1.7225	4140	EN19/709M40
	SCM445		4145
40CrNiMoA	SNCM 439/SNCM8	36CrNiMo4/1.6511	4340	EN24/817M40
		40NiMoCr10-5/1.6745		EN26/826M40
		34CrNiMo6 / 1.6582	4337
		30CrNiMo16-6/1.6747	4330V	EN30B/835M30
		32CrMo12/1.7361		EN40B/722M24
16CrMnH / 20CrMnTi		16MnCr5 / 1.7131	5115
20CrMn		20MnCr5 / 1.7147
		15CrNi6/1.5919	3115
		16NiCr4/1.5714		EN351/637M17
			4615/4617	EN34/665M17
		14NiCr14/1.5752	3310/3415	EN36/655M13
		15NiCrMo16-5/1.6723		EN39/835M15
17CrNiMo6		18CrNiMo7-6 (1.6587)	4815
20CrNiMo	SNCM220	1.6523/21NiCrMo2	8620	805M20
		20CrNiMo5		EN353
GCr15	SUJ2	52100/1.3505		EN31/535A99
38CrMoAl	SACM645	41CrAlMo7/34CrAlMo5		905M39/905M31	41CrAlMo74(ISO)