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.”
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.
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 |