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Guangzhou Changfeng Steel Co., LTD
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Alloy Steel SCM440 SAE4140 1.7225 42CrMo Steel Round Bar For Mechanical Use Gear

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!

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

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Alloy Steel SCM440 SAE4140 1.7225 42CrMo Steel Round Bar For Mechanical Use Gear

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Large Image :  Alloy Steel SCM440 SAE4140 1.7225 42CrMo Steel Round Bar For Mechanical Use Gear

Product Details:
Place of Origin: CHINA
Brand Name: Changfeng
Certification: ISO/ Mill Certificate
Model Number: 1.7225 SCM440 SAE4140
Payment & Shipping Terms:
Minimum Order Quantity: 5T
Price: 750-980usd/t
Packaging Details: bulk packing/wooden case
Delivery Time: 15-20 days
Payment Terms: T/T, L/C
Supply Ability: 1000t/Mouth
Detailed Product Description
Diameter: 20-450mm Heat Treatment: Annealing/Q+T
Test: SGS/Ut100%/Elements Testing Technology: Hot Rolled/ Forged
HS Code: 7228300000 Surface: Black Surface
Shape: Round Bar Performance: High Strength, Hardenability, Toughness
Flaw Detection: CC / DD/ EE Our Service: CIF / FOB / EXW
High Light:

engineering special steels

,

h13 tool steel

Alloy Steel SCM440 SAE4140 1.7225 42CrMo Steel Round Bar For Mechanical Use Gear

 

1. 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


2. Equivalent grades

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



3. Available size(mm)

Flat Bar Size(mm) Round bar Size(mm)
Thickness Width Length Diameter Length
13-280 200-2200 2000-10000 20-260 3000-6000


 

4. Feature
It's characterized by good strength, hardenability and toughness, and it has high creep strength and long lasting strength under the high temperature.

5.Appliation

It's used to manufacture forgings that require higher strength and larger quenched and tempered section than 35CrMo steel, such as large gears for locomotive traction, supercharger transmission gears, rear axles, connecting rods and spring clamps that are heavily loaded. It can also be used for drill pipe joints and fishing tools for oil deep wells below 2000m.

 

6. Hardness

For anneal, the hardness is less than 217HB.

For Q+T,  the hardness is 28-32HRC.

7.Heat Treatment

When forging, firstly preheat the steel carefully, then raise the temperature to 1150-1200°C for forging. Do not forge below 850°C.

When annealing, firstly heat the AISI 4140 slowly to 800-850°C and allow enough time for the steel to be thoroughly heated, then cool slowly in the furnace to 480°C followed by air cooling.

8. Product pictures

Alloy Steel SCM440 SAE4140 1.7225 42CrMo Steel Round Bar For Mechanical Use Gear 0

Alloy Steel SCM440 SAE4140 1.7225 42CrMo Steel Round Bar For Mechanical Use Gear 1

 

Warehouse
Alloy Steel SCM440 SAE4140 1.7225 42CrMo Steel Round Bar For Mechanical Use Gear 2


Processing
Alloy Steel SCM440 SAE4140 1.7225 42CrMo Steel Round Bar For Mechanical Use Gear 3


Strict Quality Control


Alloy Steel SCM440 SAE4140 1.7225 42CrMo Steel Round Bar For Mechanical Use Gear 4

Contact Details
Guangzhou Changfeng Steel Co., LTD

Contact Person: Echo

Tel: +8613535323261

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