1.7225 SAE4140 SCM440 Alloy Tool Mechanical Steel Flat Bars

• Technique: Hot Rolled
• Standard: AISI, JIS, ASTM, DIN, BS, GB
• Certification: IS0, RoHS
• Thickness: 12-280mm
• Width: 2200mm
• Length: 5800mm
• Model NO.: 1.7225 SAE4140 SCM440
• Heat Treatment: Annealing/Q+T
• Technology: Hot Rolled/Forged
• Certificate: ISO/Mill Certificate
• Test: SGS/Ut100%/Elements Testing
• Delivery Quantity: Include MOQ
• Type: Steel Plate and Round Bar
• Surface Treatment: Blackface
• Transport Package: for Customers′ Request
• Specification: thickness: 12-280mm width: >=155mm, length: 5800m
• Trademark: CF STEEL
• Origin: Guangdong, China
• HS Code: 7225401000
• Production Capacity: 1000t/Month

Product Description

1.7225 SAE4140 SCM440 Alloy Tool Mechanical Steel Flat Bars

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, 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;
 
3,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)

4,Ready stock and delivery state
Round Bar diameter 14-460mm.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.

5, 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.

6,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

7,Available size(mm)

Grade	Size(mm)
SCM440 Plate	Thickness	Width	Length
	12-280	2200	5800
SCM440 Round Bar	Diameter		Length
	16-450		3000-6000

8. Product show