牌号 |
等级 |
化学成分w/% |
脱氧方法 |
C |
Mn |
Si |
S |
P |
不大于 |
Q195 |
|
0.06~0.12 |
0.25~0.50 |
0.30 |
0.050 |
0.045 |
F,b,Z |
Q215 |
A |
0.09~0.15 |
0.25~0.55 |
0.30 |
0.050 |
0.045 |
F,b,Z |
B |
0.045 |
Q235 |
A |
0.14~0.22 |
0.30~0.65 |
0.30 |
0.050 |
0.045 |
F,b,Z |
B |
0.12~0.20 |
0.30~0.70 |
0.045 |
C |
≤0.18 |
0.35~0.80 |
0.040 |
0.040 |
Z |
D |
≤0.17 |
0.035 |
0.035 |
TZ |
Q255 |
A |
0.18~0.28 |
0.40~0.70 |
0.30 |
0.050 |
0.045 |
F、b、Z |
B |
0.045 |
Q275 |
|
0.28~0.38 |
0.50~0.80 |
0.35 |
0.050 |
0.045 |
b、Z |
说明: 1.Q235A,B级沸腾钢锰质量分数上限为0.60%。
|