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Guangzhou Changfeng Steel Co., LTD
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High Hardenability Tool Steel Bar SAE4140 SCM440 Diameter 20-450mm

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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High Hardenability Tool Steel Bar SAE4140 SCM440 Diameter 20-450mm

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Large Image :  High Hardenability Tool Steel Bar SAE4140 SCM440 Diameter 20-450mm

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
HS Code: 7228300000
High Light:

carbon tool steel

,

hardened tool steel

Tool steel Round Bar SAE4140/SCM440 for alloy steel with diameter 20-450mm

Tool steel Round Bar SAE4140/SCM440 for alloy steel with diameter 20-450mm

 

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.

FAQ:

Q: Are you a manufacturer or merely a trader?
A: We are trading company act as exporting Steel Products with our own factory,
we can manufacture the products as in cutomer's requirement,wholesale and retail all kinds of domestic mould steel,the price we offered is very competitive compared with other agents.

Q: How do you guarantee the quality of your product?
A: Firstly, we can provide the certificates from the third party, such as SGS, CE,ISO if you need. Secondly, we have a complete set of inspection system and every process is checked by QC. Quality is the lifeline of enterprise survival. Third,the products we export are mainly from ShaGang group, WenFeng group, XingCheng group, DongTe group,DaYe and so on, the quality are certained.

Q: Delivery time?
A: We have ready stock for most of material grades in our warehouse. If the material don't have stock, the delivery lead time is about 30-50 days after receiving your prepayment or firm order.

Q: What is the payment term?
A:100% T/T or 30%T/T deposite prepaid, 70%Balance L/C

Q: Can we visit your company and factory?
A: Yes, warmly welcome! We can book the hotel for you before you come to China and arrange our driver to our airport to pick you up when you come.

 

Product:

High Hardenability Tool Steel Bar SAE4140 SCM440 Diameter 20-450mm 0

High Hardenability Tool Steel Bar SAE4140 SCM440 Diameter 20-450mm 1

Contact Details
Guangzhou Changfeng Steel Co., LTD

Contact Person: Echo

Tel: +8613535323261

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