• Model NO.：SAE4140,42CRMO,1.7225,SCM440
• Special Use：Cutting Tools, Measuring Tools, Cutters in Common Steel, High-strength Steel Plate, Wear Resistant Steel
• Stock：Stock
• Heat treatment：Annealing,Q+T
• Technology：Hot Rolled,Forged,Cold Drawn
• Thickness：20-120mm
• Width：2000-2200mm
• Length：3000-6000mm
• Certificate：ISO,Mill Certificate
• Test：SGS,Ut100%,Elements Testing
• Payment：30% T,T deposit, balance by L,C at sight
• Delivery Quantity：Include MOQ
• Lead time：7-15 days
• Sample：Free
• MOQ：1MT
• Transport Package：Standard Export Packing
• Specification：20-120*2000-2200*3000-6000mm
• Trademark：CF STEEL
• Origin：China
• HS Code：7225401000
• Production Capacity：1000t,Month

Basic Info.

Model NO. SAE4140/42CRMO/1.7225/SCM440 Special Use Cutting Tools, Measuring Tools, Cutters in Common Steel, High-strength Steel Plate, Wear Resistant Steel Stock Stock Heat treatment Annealing/Q+T Technology Hot Rolled/Forged/Cold Drawn Thickness 20-120mm Width 2000-2200mm Length 3000-6000mm Certificate ISO/Mill Certificate Test SGS/Ut100%/Elements Testing Payment 30% T/T deposit, balance by L/C at sight Delivery Quantity Include MOQ Lead time 7-15 days Sample Free MOQ 1MT Transport Package Standard Export Packing Specification 20-120*2000-2200*3000-6000mm Trademark CF STEEL Origin China HS Code 7225401000 Production Capacity 1000t/Month

Product Description

Annealing Structural Alloy Steel for Mechanical 1.7225 SCM440 SAE4140

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. 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)

3. Ready Stock
Round Bar: diameter 14-460mm.
All the sizes as require can be customerized as fresh production with MOQ.
 
4. Delivery Condition
1) Hot rolled, Heat Treatment,black, hardness or tempered hardness:28-34 HRC.
2) Annealing:HBS<=235.

5. 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.

6. 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;
 
7. Delivery Time

For abundant stock, 7-15 days.For customized products, 15-30 days.

We have full set of equipement (sawing machine/grinding/polishing machine) to make customer's specification.

Listed specifications are only typical grades; products of required specifications can be developed/produced per international, Chinese or industry standards, or based on agreements with customers.

8. Product Show
Annealing Structural Alloy Steel for Mechanical 1.7225 SCM440 SAE4140



9. About Us
Guangzhou ChangFeng Steel Co., Ltd. is a professional special steel company, which specialized in exporting mould steel products based in China.  With more than 20 years experience in special steel industry,  our main products are Plastic Mould Steel, Hot Work Mould Steel, Cold Work Mould Steel, Alloy Structural Steel, Tool Steel, Stainless Steel, Carbon Steel and Forged Block.
To ensure provide high quality products to customers, we have close cooperation with many Chinese first class special steel enterprises, including Baosteel Group, Dongbei Special Steel, Changcheng Special Steel, Hongsheng Heavy Industry, Xingcheng Special Steel, Daye Special Steel.  We have thousand tons of stock materials in our own factory and also can provide processing services to customers.  We are full of export experience for many years, the product covers America, Germany, France, Italy, Turkey, Singapore, Thailand, Malaysia, Vietnam, Taiwan, and Middle-East.