1.7225/SAE4140/SCM440 Steel Flat Bar and round bar of Alloy steel for Mechanical

• After-sales Service: 24-hours
• Warranty: 7 days after receiving goods
• Type: Steel Plate
• Standard: ASTM, AISI, GB, JIS, DIN, BS
• Certification: ISO, RoHS
• Surface Treatment: Blackface
• Model NO.: 1.7225/SAE4140/SCM440
• Technique: Hot Rolled
• Application: Mold & Dies
• Special Use: High-strength Steel Plate, Wear Resistant Steel
• Stock: Stock
• Thickness: 12-500mm
• Heat Treatment: Annealing/Q+T
• Technology: Hot Rolled/Forged/Clod Drawn
• Certificate: ISO/Mill Certificate
• Test: SGS/Ut100%/Elements Testing
• Payment: 30% Deposit, Blance by L/C at Sight or T/T
• Delivery Quantity: Include MOQ
• Transport Package: for Customers′ Request
• Specification: thickness: 20-280mm width: >=155mm, length: 5800m
• Trademark: CF STEEL
• Origin: China
• HS Code: 7225401000
• Production Capacity: 1000t/Month

Product Description

1.7225/SAE4140/SCM440 Steel  Flat Bar and round bar of Alloy steel for Mechanical

1. Perform Standard: GB/T 3077-1999

2. 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

3. Available Size:

Grade	Size(mm)
SCM440 Plate	Thickness	Width	Length
	20-280	2200	5800
SCM440 Round Bar	Diameter		Length
	16-450		3000-6000

4. 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.

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.

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