Rolled Steel for General Structure

This has been applied most widely among any of JIS; it ranges from bridge beams, vessels, vehicles to most of parts in construction. SS400 takes the majority in the consumption, for it has been applied to almost all machine and construction as supportive assembly. In addition, SS400 is of semi-killed steel without full deoxygenation, so the segregation of P. and S. would appear higher and makes the microstructure less uniform. It is essential to pay attention if there is any defection such as “lamination.”

Product Applications

Suitable for foot bolts, rivets, levers, hooks, brackets, welding structures. Used in conveyor chains, levers, linkage bars, pins, screws, nuts, seats, building structures, bridges, etc.

pins

conveyor chains

pulling rod

hooks

Steel data

Standard Code Spec No. Material No. Mark
CNS 2473 SS400
JIS G3101 SS400
ASTM A36
JIS G3101 SS330
ASTM A570 Gr.30
DIN 17100 1.0036 USt37-2
(C)% (Mn)% (P)% (S)% (N)% (Cu)% Thickness(mm) Yield strength(Mpa) Tensile strength(Mpa) Elongation(%)
≦ 0.05 ≦ 0.05 ≦ 16 ≧ 245 400~510 ≧ 24
≦ 0.05 ≦ 0.05 ≦ 16 ≧ 245 400~510 ≧ 21
≦ 0.25 ≦ 0.04 ≦ 0.05 ≧ 250 400~550
≦ 0.05 ≦ 0.05 ≦ 16 ≧ 205 330~430 ≧ 26
≦ 0.25 ≦ 0.9 ≦ 0.035 ≦ 0.04 ≦ 0.2 ≧ 205 ≧ 340 ≧ 25
≦ 0.2 ≦ 0.05 ≦ 0.045 ≦ 0.008 16~40 ≧ 225 340~470 ≧ 26