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42crmo4 Aisi 4140 42crmo4 4140 Low Alloy Steel 1.7225 Astm Scm440

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42crmo4 Aisi 4140 42crmo4 4140 Low Alloy Steel 1.7225 Astm Scm440

Name: 42crmo4 Aisi 4140 42crmo4 4140 Low Alloy Steel 17225 Astm Scm440
Brand: Zhanlu
Price: 1 USD

Brand Name : Zhanlu

Model Number : Round Bar

Place of Origin : China

MOQ : Consultation

Price : Consultation

Payment Terms : L/C, T/T

Supply Ability : Consulting service

Delivery Time : 5-8 workdays

Packaging Details : Conventional packaging

Name : AISI 4140 Alloy Structural Steel

Length : 2.5m-10m

Material : AISI 4140

Diameter : 6.0mm-1200mm

Characteristic : Very high strength and toughness

Shape : Round Bar

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AISI 4140 Alloy Structural Steel 6.0mm-1200mm Hot Rolled Bright

AISI 4140 steel is Chrome-Moly High Tensile Steel which has at least 0.8%Cr,0.15%Mo as strengthening alloy elements.The chromium content provides good hardness penetration, and the molybdenum content ensures uniform hardness and high strength. AISI 4140 steel can be oil hardened to a relatively high level of hardness with a tensile strength of 850 – 1000 MPa.AISI 4140 offers a very good balance of strength,toughness and wear-resistance.Compared with AISI 4130,it has a slightly higher carbon content which gives greater strength and heat treatment capabilities , however it is poor in weldability.Pre hardened and tempered 4140 can be further surface hardened by flame or induction hardening(can be surface hardened to a typical value 58HRC)and by nitriding( Surface hardness achievable is 600 to 650HV).

Supply Form & Size

Form of Supply	Size(mm)	Length(mm)
Round bar	Φ5-Φ1,200	3,000-10,000
Square bar	100×100-600×600	3,000-6,000
Plate/Sheet	Thickness :20-400 Width:80-1,000	2,000-6,000
Flat bar/Blcoks	Thickness :120-800 Width:120-1,500	2,000-6,000

Chemical Composition&Related Specifications

Grade	C	Si	Mn	P	S	Cr	Mo
4140	0.38-0.43	0.15-0.35	0.75-1.0	≤0.035	≤0.04	0.8-1.1	0.15-0.25

Brand comparison table

Germany	AISI/SAE	China	Japan
42CrMo4/1.7225	4140	42CrMo	SCM440

AISI 4140 steel Mechanical Property

Ruling Section mm	<254	<127
Tensile Strength Mpa	690	862
Yield Strength Mpa	552	758
Elongation %	>20	>13
Reduction of Area %	>40	>40
Charpy Impact -46°C, J	>42	>27
Hardness HB	217-235	285-341

42crmo4 Aisi 4140 42crmo4 4140 Low Alloy Steel 1.7225 Astm Scm440

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