JIS G 4105 SCM420 Seamless Steel Pipes
JIS G 4105 is a specification for alloy structural steel in the Japanese Industrial Standards, among which SCM420 is one of the widely used alloy steel materials.
Chemical composition and mechanical properties ：
Chemical composition (%) | ||||||
C | Si | Mn | P | S | Cr | Mo |
0.18-0.23 | 0.15-0.35 | 0.60-0.85 | 0.030max | 0.030max | 0.90-1.20 | 0.15-0.30 |
Yield Strength | Tensile Strength | Elogation%(min) |
835 | 685 | 12 |
1.Standard: JIS G 4105 is a Japanese industrial standard specifically for alloy structural steel.
2.Equivalent international material standards for SCM420 include:
China: 20CrMo
USA: AISI 4140
Germany: 42CrMo4
Europe: 42CrMo4 (EN 10083-3)
3.The delivery states are usually as follows:
Annealed: After annealing, the hardness is low and it is easy to machine.
Normalized: After normalizing, the grains are refined, and the strength and toughness are good.
Quenched and Tempered: After quenching and tempering, the hardness and strength meet the design requirements.
Through strict heat treatment and quality control, SCM420 seamless steel pipe can meet the high performance requirements in various industrial applications.
