船体用结构钢的牌号及化学成分 ( 摘自 GB / T712 — 1988 )
|
钢类 |
等级 |
化学成分 ( 熔炼成分 ) ( 质量分数 ) , % |
|||||||
|
C ( 碳 ) |
Mn ( 锰 ) |
Si ( 硅 ) |
P ( 磷 ) |
S ( 硫 ) |
A1s ( 铝 ) |
Nb ( 铌 ) |
V ( 钒 ) |
||
|
一般强度钢 |
A |
≤ 0 . 22 |
≥ 2 . 5C |
0 . 10 ~ 0 . 35 |
≤ 0 . 04 |
≤ 0 . 04 |
— |
— |
— |
|
B |
≤ 0 . 21 |
0 . 60 ~ 1 . 00 |
0 . 10 ~ 0 . 35 |
≤ 0 . 04 |
≤ 0 . 04 |
— |
— |
— |
|
|
D |
≤ 0 . 21 |
0 . 60 ~ 1 . 00 |
0 . 10 ~ 0 . 35 |
≤ 0 . 04 |
≤ 0 . 04 |
≥ 0 . 015 |
— |
— |
|
|
E |
≤ 0 . 16 |
0 . 70 ~ 1 . 20 |
0 . 10 ~ 0 . 35 |
≤ 0 . 04 |
≤ 0 . 04 |
≥ 0 . 015 |
— |
— |
|
|
高强度钢 |
AH32 |
≤ 0 . 18 |
0 . 70 ~ 1 . 60 |
0 . 10 ~ 0 . 50 |
≤ 0 . 04 |
≤ 0 . 04 |
≥ 0 . 015 |
— |
— |
|
DH32 |
≤ 0 . 18 |
0 . 90 ~ 1 . 60 |
0 . 10 ~ 0 . 50 |
≤ 0 . 04 |
≤ 0 . 04 |
≥ 0 . 015 |
— |
— |
|
|
EH32 |
≤ 0 . 18 |
0 . 90 ~ 1 . 60 |
0 . 10 ~ 0 . 50 |
≤ 0 . 04 |
≤ 0 . 04 |
≥ 0 . 015 |
— |
— |
|
|
AH36 |
≤ 0 . 18 |
0 . 70 ~ 1 . 60 |
0 . 10 ~ 0 . 50 |
≤ 0 . 04 |
≤ 0 . 04 |
≥ 0 . 015 |
0 . 015 ~ 0 . 050 |
0 . 030 ~ 0 . 10 |
|
|
DH36 |
≤ 0 . 18 |
0 . 90 ~ 1 . 80 |
0 . 10 ~ 0 . 50 |
≤ 0 . 04 |
≤ 0 . 04 |
≥ 0 . 015 |
0 . 015 ~ 0 . 050 |
0 . 030 ~ 0 . 10 |
|
|
EH36 |
≤ 0 . 18 |
0 . 90 ~ 1 . 60 |
0 . 10 ~ 0 . 50 |
≤ 0 . 04 |
≤ 0 . 04 |
≥ 0 . 015 |
0 . 015 ~ 0 . 050 |
0 . 030 ~ 0 . 10 |
|
