Description:

Mild Steel Hot Rolled Low Carbon Round Bar SAE4140

SKT4 steel has good toughness, strength and wear resistance.It at room temperature and 500 ~ 600 ℃ at almost the same mechanical properties.When heated to 500 ℃, can still maintain HB300 about hardness

3.Similar steel grade & equivalent steel materials:

chemical component

C :0.50~0.60
Si:≤0.40
Mn:0.50~0.80

S :≤0.030
P :≤0.030
Cr:0.50~0.80
Ni:1.40~1.80
Cu:≤0.30
V :<0.2
Mo:0.15~0.30 

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