42CrMo High Speed Forged Steel Rolls EN Standard Hot Roller Forging Hollow Bar

42CrMo High Speed Forged Steel Rolls EN Standard Hot Roller Forging Hollow Bar

1. Supply Form of AISI 4140 Steel -ASTM A29/A29M Alloy Structural Steel

2. Supply Range of AISI 4140 Alloy Steel / 42CrMo4 steel

AISI 4140 Steel Round Bar: diameter 5mm – 400mm

ASTM 4140 Steel Plate: thickness 5 –500mm x width 200– 2300mm

SAE 4140 Steel Block: 210mm x 500-810mm

3. Chemical Composition of AISI 4140 Steel Material / 42CrMo4 steel

4. AISI 4140 alloy Steel Equivalent and Related Speciation / 42CrMo4 steel

5. ASTM AISI 4140 Steel Material Mechanical Properties

Hardness, Rockwell C: 22 HRC, Density: 7.85kg/m3

Tensile strength: 655 MPa .

Melting point: 1416°C

Thermal expansion: 12.2 µm/m°C (20-100 ºC)

Elastic modulus: 190-210 GPa (at 25 ºC ).

6. Forging of AISI 4140 Oil and Gas industry Steel material metal

Forging of 4140 steel should be carried out between 2200 and 1650 º F (1200 and 900 º C). The lower the finishing temperature from forging, the finer will be the grain size. This alloy steel should ideally not be forged below 1650 º F (900 º C) and should be slow cooled after forging in Oil or water.

7. Heat Treatment of SAE/AISI 4140 Alloy Steel / 42CrMo4 steel

• 4140 Steel Annealing

Slowly heat to 800～8500 ºC, keep enough time, ensure heat thoroughly. then cooling in furnace to 480 ºC, then cool in air. After annealing, the hardness 92 HBS Max.

• AISI 4140 Steel Hardening & Quenching

4140 Steel is usually used at 18-22 HRc, If needs, AISI 4140 alloy steel can be hardened or Quenching by cold work. Quenching medium: oil

• Tempering Of AISI 4140 Alloy Steel

/ ℃ tempering temperature: 205 ~ 649°C.

After tempering hardness HRC: 18-25 HRc.

8. Application of AISI 4140 Alloy Steel / 42CrMo4 steel

AISI 4140 alloy steel used for Structural products. As below:

Oil and gas sector, like collets, connection rods, conveyor pins, stem assemblies, gears, Bearings

9. Quality Assured of AISI 4140 Alloy Steel / 42CrMo4 steel

Quality assured by Our ISO 9001:2008 quality management system. Our all AISI 4140 steel all had by SEP 1921-84 ultrasonic inspection (UT Test). Quality Grade: E/e, D/d, C/c.

Jiangsu Mittel Steel Industrial Limited is  located in Wuxi City,  a beautiful city near Shanghai.  Wuxi is close to  Shanghai (BAO STEEL) ,Zhangjiagang (ZPSS),Ningbo (BAO XIN),KUN SHAN (DKSS), enjoy excellent geographic location and convenient water, land and air transportation. , Wuxi become the biggest  stainless steel sheet ,plate and coil  supply Centers in China. Jiangsu Mittel Steel Industrial Limited was established in 1998 years. as one of the largest stockists and manufacturers of industrial grade Stainless Steel products and derivatives in Wuxi ,We keep a stock of 50000 tons every month, so we can delivery goods in fast time.

Our company supplies cold/hot-rolled stainless steel sheets,stainless steel coils and stainless steel Plate to many steel factories from athome and abroad, including Shanxi Taigang Iron& Steel CO, . Ltd (TISCO)Zhangjiagang Pohang (ZPSS), Shanghai BAO STEEL, Ningbo Baoxin and steel factories in Taiwan area, Mainland Chinese and foreign countries and regions. 

Our long-term business lines are 201.202.304(1.4301).304L.316.316L(1.4404).430.409L, 309S ,310S(1.4845).317L.904L.S31803(1.4462).S32750.S32760, Finish: 2B, BA, NO. 1 NO. 4, HL, 8K and so on...Meanwhile, our company is also engaged in the long-term supply of homemade & imported medium and thick plates, galvanized and carbon steel products. 

Adhering to the principle of "quality first and customer foremost",our company will offer long-term service to nationwide manufacturers of household appliances, elevators, tableware, ornaments, tanks and machines. We can offer precise frosted wiredrawing, 8K mirror finishing and skim board oil-abrasion of various specifications at any time. The precisely-processed products will meet your requirements for high quality. Our company is a modern enterprise integrating distribution and storage. 

If you are interested in any of our products or would like to discuss a custom order, please feel free to contact us. We are looking forward to forming successful business relationships with new clients around the world in the near future.