Specifications

1.7305
1.Hot rolled steel
2.Delivery time:7~10 days
3.Ut test grade:SEP1921-84 Class C/c
4.Instock

1.7305

 

1.Grade: AISI 5140   DIN  1.7035/41Cr4   JIS SCr440   GB 40Cr

 

2.Size: dia 20-650mm  length 2000-6000mm
 

3.Chemical composition:(%)

C	Si	Mn	P	S	Cr	Ni
0.40	0.30	0.70	≤0.025	≤0.025	1.00	≤0.25

 

4.Factory state:Hot rolled or forged. Annealed hardness ≤ 207. Black surface or as your requirement.

 

5.Characteristic: Is the most commonly used alloy structural steel, tensile strength, yield strength the steel hardenability than 40 high.

 

6.Application: Used in the manufacture of mechanical parts to withstand medium-load and medium-speed work. After quenching and low temperature tempering for manufacturing withstand heavy-duty, low-impact and abrasion resistance, the entities cross section thickness less than 25mm of parts. After quenching and tempering and the high-frequency surface hardening for manufacturing parts having a high surface hardness and abrasion resistance without a great impact.

 

7.Process flow: Electric arc furnace melting→Refining furnace → Vacuum treatment furnace → Cast ingot → Steel ingot anneal → Heating → High-speed forging,refining forging → Anneal,retarded cooling,air cooling → Quenching and tempering tretment → Finishing operation → Text → Finished products

  
Note:

1. According to national standard (GB)for our products, if not, supply according to national standards(GB) or agreement.
2. We can not only provide electric furnace +LF+VD and electroslag re-melting(ESR)steel forging materials, but also forging products of piece, bar, etc.
3. Our company is equipped with roll equipment and can provide our customers with roll billets or finished.

4. Please send us your detailed specifications when inquire. We will reply to you ASAP.

5. You can contact us if you have any questions.

 

Photo for your referrence

 

 

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