SCM440 SAE4140 42CrMo 1.7225 Hot Sales Alloy Mechanical Steel

• Type: Steel Plate
• Standard: AISI, ASTM, DIN, JIS, GB, BS
• Composition: Alloy Steel
• Technique: Hot Rolled
• Shape: Plate
• Surface Treatment: Black
• Model NO.: SCM440 SAE4140 42CrMo 1.7225
• Special Use: High-strength Steel Plate, Wear Resistant Steel, Free Cutting Steel, Mold Steel
• Application: Structural Steel Bar
• Thickness: 10-500mm
• Heat Treatment: Annealing/Q+T
• Technology: Hot Rolled/Forged/Clod Drawn
• Certificate: ISO/Mill Certificate
• Test: SGS/Ut100%/Elements Testing
• Payment: L/C or T/T
• Delivery Quantity: Include MOQ
• Transport Package: for Customers′ Request
• Specification: thickness: 12-280mm width: >=155mm, length: 5800mm
• Trademark: CF STEEL
• Origin: China
• HS Code: 7228300000
• Production Capacity: 1000t/Month

Product Description

SCM440 SAE4140 42CrMo 1.7225 Hot Sales Alloy Mechanical Steel

Perform Standard: GB/T 3077-1999

 1. Chemical composition:

C	Si	Mn	Cr	Mo	P	S	Ni
0.38~0.45	0.17~0.37	0.60~0.90	0.90~1.20	0.15-0.25	≤0.018	≤0.030	≤0.012

2. Ready Stock: 

Grade	Size(mm)
SCM440 Plate	Thickness	Width	Length
	12-400	2200	5800
SCM440 Round Bar	Diameter		Length
	16-450		3000-6000

3. 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.

4. 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.
 
5. 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)

6. Delivery state:
Hot rolled, Heat Treatment,black, hardness or tempered hardness:28-34 HRC.
Annealing:HBS<=235.

7. Delivery time:
For abundant stock, 7-15 days.For customized products, 30-50 days.
We have full set of equipement (sawing machine/grinding/polishing machine) to make customer's specification.

8. Product list