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Guangzhou Changfeng Steel Co., Ltd.

Steel, Steel Products, alloy steel manufacturer / supplier in China, offering 1.7225/SCM440/SAE4140 Steel Round Bar Alloy Steel for Mechanical, DIN 1.2738/P20+Ni Forged Plastic Mould Steel Products, 718 New Steel Products For Good Hardenalibity and so on.

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Supplier Homepage Product Alloy Steel 1.7225/SCM440/SAE4140 Steel Round Bar Alloy Steel for Mechanical

1.7225/SCM440/SAE4140 Steel Round Bar Alloy Steel for Mechanical

Purchase Qty.:
3-4 5-19 20+
FOB Unit Price: US $1,150 US $1,100 US $1,050
Purchase Qty. (Tons) FOB Unit Price
3-4 US $1,150
5-19 US $1,100
20+ US $1,050
Get Latest Price
Port: Shenzhen, China
Production Capacity: 1000t/Month
Payment Terms: L/C, T/T, D/P

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Basic Info
  • Model NO.: 1.7225, SAE4140, SCM440, 42CrMo
  • Standard: AISI, ASTM, DIN, JIS, GB, BS
  • Technique: Hot Rolled
  • Surface Treatment: Polished
  • Application: Tool Steel Bar
  • Technology: Hot Rolled/Forged/Clod Drawn
  • Width: 205~610mm
  • Certificate: ISO/Mill Certificate
  • Delivery Quantity: Include MOQ
  • Transport Package: for Customers′ Request
  • Origin: Guangdong, China
  • Type: Alloy Steel Bar
  • Composition: Alloy Steel
  • Shape: Round
  • Special Use: Wear Resistant Steel
  • Heat Treatment: Annealing/Q+T
  • Thickness: 6-80mm
  • Length: 2000~4000mm
  • Test: SGS/Ut100%/Elements Testing
  • Trademark: CF STEEL
  • Specification: diameter 12-300mm
  • HS Code: 7225401000
Product Description
Alloy Steel for Mechanical 1.7225, SAE4140, SCM440 Steel Round Bar 

SAE 4140 alloy steel is chromium, molybdenum, manganese containing low alloy steel. It has high fatigue strength, abrasion and impact resistance, toughness, and torsional strength. 

Chemical Composition(%)

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: 
Round Bar diameter 14-460mm.All the sizes as require can be customerized as fresh production with MOQ.
5,Delivery state:
Hot rolled, Heat Treatment,black, hardness or tempered hardness:28-34 HRC.

6, 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.

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.

Welcome to send me the inquiry to demande the quotation, welcome to contact me for more informations:
Sales Manager
Mobile Phone: +0086 13631315169
Tel: 0086-20-82515856  Fax:0086-20-82515866

Company certificate
1.7225/SCM440/SAE4140 Steel Round Bar Alloy Steel for Mechanical

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1.7225/SCM440/SAE4140 Steel Round Bar Alloy Steel for Mechanical
1.7225/SCM440/SAE4140 Steel Round Bar Alloy Steel for Mechanical
1.7225/SCM440/SAE4140 Steel Round Bar Alloy Steel for Mechanical
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