Round bar 5140

Size

1.Round bar: Diameter:20-400mm;Length:1000-6000mm;
2.Flat bar : Thickness:20-400mm;Width:255-610mm;Length:1000-6000;

Chemical Composition (for example:4340)

C :0.4

Si :0.3

Mn :0.55

P :0.025

S :0.025

Cr :0.8

Ni :1.35

Mo :0.2

Factory state (for example:4340)

Annealed hardness to 269; Or tempered;

Black surface or per u request;

Application

AISI 4340:For vane, shaft ,bolt of large dia steamer;

AISI 4140: Same as AISI 4135, with big section, supper force;

AISI 5140: For shaft,screw bolt, joint shaft in widely use;

AISI 6150 : Spring steel for gas engine, car within 200 certigrade.

etc;