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Alloy Structure Steel Round Bar SAE4140/SCM440 For Auto Parts

China Guangzhou Changfeng Steel Co., LTD certification
China Guangzhou Changfeng Steel Co., LTD certification
Gold supplier! Arranged shipment very fast, quality is super good. They are one of our best suppliers, will do more business with them in the future!

—— Ms Nguyen Thi Hong

We bought 7 containers from them in 2017, no quality problems. The boss is very nice and professional, good business parner!

—— Mr. Wan Rusli

Good job! Shipment was arranged fast, giving lots of good suggestions before place order, saved me time and money.

—— Mrs. Natntia Jitaniyompanich

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Alloy Structure Steel Round Bar SAE4140/SCM440 For Auto Parts

Alloy Structure Steel Round Bar SAE4140/SCM440 For Auto Parts
Alloy Structure Steel Round Bar SAE4140/SCM440 For Auto Parts Alloy Structure Steel Round Bar SAE4140/SCM440 For Auto Parts Alloy Structure Steel Round Bar SAE4140/SCM440 For Auto Parts Alloy Structure Steel Round Bar SAE4140/SCM440 For Auto Parts Alloy Structure Steel Round Bar SAE4140/SCM440 For Auto Parts Alloy Structure Steel Round Bar SAE4140/SCM440 For Auto Parts

Large Image :  Alloy Structure Steel Round Bar SAE4140/SCM440 For Auto Parts

Product Details:
Place of Origin: China
Brand Name: customized
Certification: ISO/Mill Certificate
Model Number: SAE4140 / 1.7225 / SCM440 / 42CrMo
Payment & Shipping Terms:
Minimum Order Quantity: 3tons
Price: 850-1000$/ton
Packaging Details: standard/customized
Delivery Time: 15-20days for stock
Supply Ability: 1000t/Month
Detailed Product Description
Heat Treatment: Annealed/Q+T Surface Condition: Peeled/Polished/Machined/turned
Delivery Condition: Hot Rolled/forged Quality Assurance: 100% UT Passed
Smelting Workmanship: EAF+LF+VD Material: Alloy Steel
Application: Bolt/hummar Shank Etc.
High Light:

air hardening tool steel

,

h13 tool steel

 

Alloy Structure Steel Round Bar SAE4140/SCM440 For Auto Parts

 

 

It is an alloy structural steel, below is the specification of Engineering Steel Bar SAE4140:

 

High strength, high hardenability, good toughness, small deformation during quenching, high creep strength and long-lasting strength at high temperatures.

 

For the manufacture of steel with higher strength and quarry section than 35CrMo, such as locomotive traction gear, supercharger transmission gear, rear axle, heavy load connecting rod and spring clamp, can also be used 2000m below the deep oil drill pipe joints and salvage tools.

 

Alloy Structure Steel Round Bar SAE4140/SCM440 For Auto Parts 0

Equivalent grades

 

GB(China) DIN(German) AISI(USA) JIS(Japan)
42CrMo 1.7225 SAE4140 SCM440

 

 

Applications

 

Used in the manufacture of high strength, large cross-section forgings such as supercharger transmission gear,rear axle, hummar shank etc.

 

 

Chemical Composition(%)

 

C Si Mn Cr P S Mo
0.38-0.45 0.17-0.37 0.50-0.80 0.90-1.20 ≤0.035 ≤0.035 0.15-0.25

 

 

Recommend heat treatment

 

Quenching Tempering
Heating temperature/℃ Cooling way Hardness (HRC) Tempering
temperature
/ºC
Cooling way Hardness
(HRC)
850-880 Oil Cooling 50-52 450-650 Air cooling 36-42

 

 

Available size(mm)

 

Plate/Flat Bar Size(mm) Round bar Size(mm)
Thickness Width Length Diameter Length
10-200 155-2200 2200-6000 16-450 3000-6000

 

 

Feature

 

1. Good strength, hardenability and toughness.

2. High creep strength and long lasting strength under the high temperature.

 

 

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)

 

 

Standards and Practices:

 

Bars & Forgings – To comply with all requirements of the latest edition of the Standards of the Society of Automotive Engineers for SAE 4140 steel.

 

Plates – To comply with all requirements of the latest edition of the Steel Products Manual of the Iron and Steel Society of AIME, for 4140 alloy steel plate.

 

 

Why Choose Us?

 

1. Competitive price and high quality
2. Quick delivery and standard exporting package 
3. OEM/ODM order accept 
4. Flexible payment with T/T, L/C
5. Smooth production ability(1000tons/month)
6. Approved by ISO9001, CE, SGS every year
7. Best service with 24 hours reply

 

 

More about Changfeng Steel

 

Guangzhou Changfeng Steel Co., Ltd is a mould steel stockist, we have our own factory and trading company. Our main steels are carbon tool steel, plastic mold steel, hot work tool steel, cold work tool steel, alloy steel for mechanical, etc.

 

All material are with high quality and competitive price.

 

We are here waiting for a cooperation chance between us, contact us and you will have one more loyal mold steel supplier!

 

Alloy Structure Steel Round Bar SAE4140/SCM440 For Auto Parts 1

 

Contact Details
Guangzhou Changfeng Steel Co., LTD

Contact Person: Echo

Tel: +86 18148729336

Fax: +86-020-8251-5866

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