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Guangzhou Changfeng Steel Co., LTD
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SCM440 SAE4140 1.7225 Steel Flat Bar With Thickness 13-180mm Annealing

China Guangzhou Changfeng Steel Co., LTD certification
China Guangzhou Changfeng Steel Co., LTD certification
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SCM440 SAE4140 1.7225 Steel Flat Bar With Thickness 13-180mm Annealing

SCM440 SAE4140 1.7225 Steel Flat Bar With Thickness 13-180mm Annealing
SCM440 SAE4140 1.7225 Steel Flat Bar With Thickness 13-180mm Annealing SCM440 SAE4140 1.7225 Steel Flat Bar With Thickness 13-180mm Annealing

Large Image :  SCM440 SAE4140 1.7225 Steel Flat Bar With Thickness 13-180mm Annealing

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: 810-920usd/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
Thickness: 13-180mm Heat Treatment: Annealing/Q+T
Test: SGS/Ut100%/Elements Testing Technology: Hot Rolled
HS Code: 7228300000
High Light:

engineering special steels

,

h13 tool steel

SCM440/SAE4140/1.7225 steel flat bar for mechanical with width 2000-2200mm

 

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


Equivalent grades:

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



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


 

Feature:
1. Good strength, hardenability and toughness.
2. High creep strength and long lasting strength under the high temperature.

Appliation:
Production load large, complex shape and valuable tool (e.g, scraper, gear, milling cutter, drilling, tapping, etc.)Cold forging die, forging tools;Strip cutting machine, heading forming die.

 

Hardness:

Anneal≤217HB

Q+T 28-32HRC

 

 

Heat Treatment

1) Forging

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

2) Annealing

Heat the AISI 4140 slowly to 800-850°C and allow enough time for the steel to be thoroughly heated. Cool slowly in the furnace to 480°C followed by air cooling.

3) Stress Relieving

When parts are heavily machined, ground or otherwise subject to cold work, stress relieving will be beneficial prior to hardening.

4) Hardening

AISI 4140 steel is usually supplied ready heat treated to 18-22HRC. If further heat treatment is required annealed AISI 4140 should be heated slowly to 840-875°C and after adequate soaking at this temperature quench in oil. Temper as soon as the tools reach room temperature.

5) Tempering

Heat the AISI 4140 carefully to a suitable temperature selected by reference to a tempering chart or table (usually between 550-700°C, soak at the temperature for 2 hours per 25mm of ruling section, then allow to cool in air. Tempering between 250-375°C is not advised as tempering within this range will seriously reduce the impact value.

 

Product:

SCM440 SAE4140 1.7225 Steel Flat Bar With Thickness 13-180mm Annealing 0

SCM440 SAE4140 1.7225 Steel Flat Bar With Thickness 13-180mm Annealing 1

Contact Details
Guangzhou Changfeng Steel Co., LTD

Contact Person: Echo

Tel: +8613535323261

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