Specifications: diameter: 320 to 127 mm thickness: 0.4 to 12.7 mm Length: 6 m above, and, in accordance with customer demand, supply and other specifications of steel pipe

42CrMo4 alloy steel pipe and chemical analysis


 

1.42crmo4 alloy steel pipe 

2.OD:6-1200mm WT:1-60mm 
3.grade:1020,1025,4130,4140 
4.Seamless Steel Mechnical Tubing

42crmo4 alloy steel pipe

42crmo4 alloy steel pipe

seamless steel pipe

Grade and Chemical Composition (%) 

Grade

C

Mn

P≤

S≤

Si

Cr

Mo

1008

≤0.10

0.30-0.50

0.040

0.050

 

 

 

1010

0.08-0.13

0.30-0.60

0.040

0.050

 

 

 

1018

0.15-0.20

0.60-0.90

0.040

0.050

 

 

 

1020

0.18-0.23

0.30-0.60

0.040

0.050

 

 

 

1025

0.22-0.28

0.30-0.60

0.040

0.050

 

 

 

1026

0.22-0.28

0.60-0.90

0.040

0.050

 

 

 

4130

0.28-0.33

0.40-0.60

0.040

0.040

0.15-0.35

0.80-1.10

0.15-0.25

4140

0.38-0.43

0.75-1.00

0.040

0.040

0.15-0.35

0.80-1.10

0.15-0.35

 
 
42CrMo4 alloy steel chemical analysis
Alloy structural steel: 42CrMo4
 
 
Chemical composition:
 
Carbon C: 0.38 ~ 0.45
Si Si: ≤ 0.40
Manganese Mn: 0.60 ~ 0.90
Sulfur S: allow the residual content ≤ 0.035
Phosphorus P: ≤ 0.035 to allow the residual content
Chromium Cr: 0.90 ~ 1.20
Ni: to allow the residual content ≤ 0.030
Cu: to allow the residual content ≤ 0.030
Mo Mo: 0.15 ~ 0.30
Mechanical properties:
Tensile strength σb (MPa): ≥ 1080 (110)
Yield strength σs (MPa): ≥ 930 (95)
Elongation δ5 (%): ≥ 12
Section shrinkage ψ (%): ≥ 45
Impact energy Akv (J): ≥ 63
Impact toughness values ​​αkv (J/cm2): ≥ 78 (8)
Hardness: ≤ 217HB
Sample size: Sample size is 25mm rough
 
        42CrMo4
Implementation of the standards: EN 10083/3-2006, American Standard AISI 4140 steel improved varieties, good workability of the steel, easily polished, easy to bite flowers, can be plated.
       Features and Scope:
Strength, hardenability, toughness, and quenching small deformation, high temperature strength and high creep rupture strength. For the manufacture of higher strength than the steel 35CrMo and quenched forging greater cross-section, such as a large gear locomotive traction, supercharger drive gear, the rear axle, and a great link by the load spring, can also be used below 2000m deep oil drill pipe joints and salvage tools. ① for one piece of electrical, electronic mold. ② plastic mold, mold base.
42CrMo4
Heat treatment and microstructure specifications:
Heat treatment specifications: quenching 850 ℃, oil cooling; tempering 560 ℃, water, oil cooling.
Microstructure: Tempered Sorbite.
Delivery status: to heat treatment (normalizing, annealing, or tempering) or without heat treatment delivery, the delivery status should be specified in the contract.

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