4140 seamless tube chemical composition and mechanical properties
SCM440 under JIS Standard.
42CrMo4 under DIN standard
708M40/708A42/709M40 under BS standard
42CrMo under GB Standard
Grade |
Chemical composition % |
||||||||
C |
Si |
Mn |
P |
S |
Cr |
Ni |
Mo |
Cu |
|
4140 |
0.38~0.45 |
0.17~0.37 |
0.50~0.80 |
≤0.035 |
≤0.035 |
0.9~1.2 |
≤0.3 |
0.15~0.25 |
≤0.3 |
Mechanical properties |
|||||||||
Tensile Strength (Mpa) |
Yield Strength (Mpa) |
Elongation in 2 in. |
Akv (J) |
Hardness |
|||||
≧1080 |
≧930 |
≧12 |
≧63 |
≤217HB |
Characteristic: 4140 steel tube has good processing and anti-fatigue performance, which belongs medium hardenable steel. 4140 heat treatment has good strength and good comprehensive mechanical properties, high yield strength. The highest working temperature is 427 ℃ . It has good toughness, quenching deformation high creep strength and lasting strength under high temperature.
Application:Manufacturing more than 35CrMo steel strength and higher quality forging section, such as locomotive traction with a large gear, supercharger transmission gear and rear axle. It can be also used well drilling pipe joints and salvage tools, and can be also used for bending machines and other molds.
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EN 10210 S355J2H hollow section
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GB/T 18248 35CrMo seamless pipe
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GB/T 18248 34CrMo4 seamless pipe
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GB/T 18248 30CrMo seamless pipe
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GB/T 8163 Q345E seamless alloy s
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GB/T 8163 Q345D seamless alloy s
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GB/T 8163 Q345C seamless alloy s
-
GB/T 8163 Q345B seamless steel p
-
GB/T 8163 20# seamless steel pip
-
EN 10297 42CrMo4 seamless pipe a
Product
Contact
- Henan BEBON Iron&Steel co., ltd.
- 0086-371-86151827
- 0086-371-86011881
- [email protected]
- Online Consultation
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