一般结构用热连轧钢板和钢带的钢号及化学成分 ( 摘自 GB / T2517 — 1981 )
|
牌号 |
化学成分 ( 质量分数 ) ， % |
|||
|
C ( 碳 ) |
Mn ( 锰 ) |
P ( 磷 ) |
S ( 硫 ) |
|
|
RJ216 |
≤ 0 . 20 |
≤ 0 . 70 |
≤ 0 . 045 |
≤ 0 . 050 |
|
RJ235 |
≤ 0 . 20 |
≤ 0 . 70 |
≤ 0 . 045 |
≤ 0 . 050 |
|
RJ255 |
≤ 0 . 20 |
≤ 0 . 70 |
≤ 0 . 045 |
≤ 0 . 050 |
|
RJ294 |
≤ 0 . 20 |
≤ 1 . 50 |
≤ 0 . 045 |
≤ 0 . 050 |
|
RJ343 |
≤ 0 . 20 |
≤ 1 . 60 |
≤ 0 . 045 |
≤ 0 . 050 |
|
RJ392 |
≤ 0 . 20 |
≤ 1 . 70 |
≤ 0 . 040 |
≤ 0 . 040 |
