SAE4140 42CrMo 1.7225 SCM440 Shaft Alloy Mechanical Steel

• Type: Alloy Steel Bar
• Standard: AISI, ASTM, DIN, JIS, GB, BS
• Composition: alloy structure steel
• Technique: Hot Rolled
• Shape: Bar
• Surface Treatment: black
• Model NO.: AISI4140/ JIS440/DIM1.7225/
• Special Use: High-strength Steel Plate, Wear Resistant Steel, Mold Steel
• Application: Structural Steel Bar
• Thickness: 20-500mm
• Heating treatment: annealing or Q+T
• business way: wholesaler or retail
• trade term: CIF/FOB/CFR
• Payment term: T/T/, L/C
• Test: UT/SGS/ELEMENT
• Transport Package: Standard Seaworthy Package
• Specification: According to customer requirements
• Trademark: customzied
• Origin: China
• HS Code: 7228300000
• Production Capacity: 500ton/Month

Product Description

SAE4140 42CrMo 1.7225 SCM440 Shaft Alloy Mechanical Steel 

1, Application
It used for section large forgings, such as locomotive traction gears, with supercharger drive gear, the rear axle, the connecting rod and the spring load greatly clip,oil drill pipe joints and fishing tools,etc.

2, Equivalent grades:

GB(China)	DIN(German)	AISI(USA)	JIS(Japan)
42CrMo	1.7225	SAE4140	SCM440

3, Chemical Composition(%)

C	Si	Mn	Cr	Mo	P	S
0.38~0.45	0.17~0.37	0.50~0.80	0.90~1.20	0.15-0.25	≤0.035	≤0.035

4, Available size(mm)

Flat Bar Size(mm)			Round bar Size(mm)
Thickness	Width	Length		Diameter	Length
10-280	155-2200	2000-6000		20-450	3000-6000

5, Feature
1) Weldability suffers with increasing chromium content;
2) High temperature strength and high pressure hydrogenation properties are promoted by chromium and molybdenum;
3) Molybdenum significantly reduces temper brittleness;
4) Chromium renders steel oil hardenable and increase hardenability;
5) Chromium molybdenum high tensile steel with yield strength of 550N/mm2;
 
6,Mechanical Properties:
Tensile strength:σb (MPa):≥1080(110) 
Yield strength:σs (MPa):≥930(95)
Elongation:δ5 (%):≥12
Section shrinkage:ψ (%):≥45
Impact work:Akv (J):≥63
Impact toughness value:αkv (J/cm²):≥78(8)

7,Ready stock and delivery state
All the sizes as require can be customerized as fresh production with MOQ;
Hot rolled, Heat Treatment,black, hardness or tempered hardness:28-34 HRC.
Annealing:HBS<=235.

8,Delivery time
For abundant stock, 15-20 days.For customized products, 30-50 days.
We have full set of equipement (sawing machine/grinding/polishing machine) to make customer's specification.