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DIN1.7225 / SAE4140 / GB42CrMo, JIS SCM440, Forged Alloy Steel Rings

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Judy Tueng
2nd F,Sihai commerical building,Jinghai Road, ChangAn town, DongGuan City, GuangDong Provice, China
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DIN1.7225 / SAE4140 / GB42CrMo, JIS SCM440, Forged Alloy Steel Rings

Product Details:
Place of Origin: China
Brand Name: ChangGang,TaiGang,BaoGang,Fushui,Baogang steel
Certification: ISO9001:2008;SGS TEST;Mill certificate test
Model Number: DIN1.7225/SAE4140/GB42CrMo,JIS SCM440
Minimum Order Quantity: 3 tons
Price: Negotiable
Packaging Details: raw packing or according to customer's requirement.
Delivery Time: 7~15 days in stock
Payment Terms: 30% deposit. the blance against L/C at sight or T/T
Supply Ability: 7000tons / month
Description

 

Hot rolled DIN1.7225 / SAE4140 / GB42CrMo, JIS SCM440,  Forged Alloy Steel Rings

 

Description:

 

1.DIN1.7225/SAE4140/GB42CrMo,JIS SCM440 alloy steel plate

2.Hot rolled or forged condition, annealing or harden, black or milled surface

3.Pre-heat treatment:

  • Annealing : heat to 840-860°c, keep 2H, furnace cold, hardness≤217HBS
  • High temperature tempering : heat to 680-700°c, air cold, hardness ≤217HBS

4.Heat treatment: 

  • Normalization: heating to 840 to 880 ° C, maintenance, furnace cooling to 600 ° C, then in air. 
  • Stress relieving: after rough heat to 500 ° C, maintenance raff. In oven to 400 ° C, then in air.
  • Hardening: preheating from 600 to 650 ° C austenitizing at 840 to 880 ° C, quenching in oil. 
  • Tempering: heating to 550 - 650 ° C and maintenance regime, again depending on the 
  • mechanica properties 

5.Hot rolled technology:EAF+LF+VD

  Forged technology: EAF+LF+VD+ESR+Forging +Q T + Machined surface 

6.Ultrasonic test standard: SPE1921-GR3, CLASS C/C or D/D

7.Production leadtime: 7~10 days

8. Chemical composition:

 

C

Mn

Si

Cr

Ni

Cu

P

S

0.17-0.23

0.30-0.60

0.15-0.40

1.25-1.75

3.25-3.75

≤0.25

≤0.030

≤0.030

 

9.Compared grades(based on usage):

 

Chinese

American

German

Japanese

GB

AISI

DIN

JIS

42CrMO4

4140

1.7225

 SCM440

 

 

Applications: 

  • General service industries (petroleum, food, chemical, paper, fertilizer,  Fabric, aviation and 
  • nuclear)
  • Fluid, gas and oil transport
  • Pressure and heat transmission
  • Construction and ornament
  • Boiler heat exchangers

 

 

Specifications:

 

Hot rolled condition

Steel plate(mm)

Mill name

 

Diameter

Length

 

 

¢16~¢205

2000~5800

ChangGang,Fushui, TianGong steel 

Forged condition 

¢150~¢600

2500~4000

Local mill with 6000tons fluid forged machine

 

 

Competitive Advantage:

 

  • Good purity and homogeneity.
  • Good machinability(Roughing, grinding and drilling).
  • Good dimensional stability during heat treatment.
  • Excellent preparation for nitriding, both ionic and gaseous, induction hardening to increase the mechanical properties.
  • Competitive price
  • Fast production leadtime
  • All the material are inspected with 3 times to meet the highly standards
     
Contact Us
Judy Tueng
  • 2nd F,Sihai commerical building,Jinghai Road, ChangAn town, DongGuan City, GuangDong Provice, China
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