info@cf-steel.com.cn
+86-769-8531 0228

ROUND BARS

Circle Four Metal Materials

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4140/1.7225 Steel Round Bar

1. MAIN APPLICATION

1Suitable for manufacturing requires a certain strength and meium-sized plastic mold. Such as locomotive travtion with the big gear, the supercharge drive gear, pressure vessel, rear axle, gear load connecting road and a spring clip, can also be used to under 2000m deep wel of  oil drill pipe joint and the fishing tool, and can be used for tending mchine mould, etc.

 

2.DELIVERY CONDITION

Hot rolled Black surface or milling

Hardness: annealed to HB 220-230

Width: 1500~2300mm  Thickness:20~200mm

Rounds: dia 20-350mm

 

3.CHARACTERISTICS

Belong to the ultra-high strength steel, with strength and toughness, good hardenability.

 

4.DILEVERY

Mill deliver condition, without sawing or cutting


Details

5.CHEMICAL ANALYSIS

GRADES

C

Si

Mn

P≤

S≤

Cr

Mo

1.7225

0.38-0.45

0.40

0.60-0.90

0.035

0.035

0.90-1.20

0.15- 1.30

4140

0.38-0.45

0.17-0.37

0.50-0.80

0.035

0.035

0.90-1.20

0.15-0.30


6. COMPARED GRADES

USA

German

Swidish

Japan

AISI

DIN

ASSAB

JIS

4140

1.7225

SCM440


7.HEAR TREATMENT(FOR REFERENCE)

Quenching

Tempering

Heating   Temperature℃

Cooling

Hardness/HRC

Heating   Temperature℃

Cooling

Hardness/HRC

840-880

Oil

53

450-650

Air

25-40


Company Profile

Circle Four Metal Materials Co.,Ltd., an ISO 9001-2008 certified steel service center located in Dongguan City, South of China. Since our foundation in early 2008, we have been specializing in mould steel selling, mould bases making and custom machined steel products along with on time delivery. With our state of art facilities totaling 5000 sq.

Contact Us

Add: No.38 XinGang Road, XinNongCun, XinAn, Chang'an Town, Dongguan City, Gunagdong Province, China

Tel: +86-769-8531 0228
Fax: +86-769-8531 8807

E-mail: info@cf-steel.com.cn

Sales Manager
Mr. Gerry Cheng
+86-137 9498 1366
gerrycheng@cf-steel.com.cn

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