|
牌號 |
等級 |
化學成分(質(zhì)量分數(shù))(％) |
脫氧方法 | ||||||
|
C |
Mn |
SP |
S |
P | |||||
|
≤ | |||||||||
|
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 |
0.30.0.65① |
0.30 |
0.050 |
0.045 |
F、b、Z | ||
|
B |
0.12-0.20 |
0.30-0.70① |
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 |
Z | ||
|
B |
0.045 | ||||||||
|
Q275 |
|
0.28-0.38 |
0.50-0.80 |
0.35 |
0.050 |
0.045 |
Z | ||
|
牌號 |
等級 |
屈服點ós／MPa | |||||
|
鋼材厚度或直徑／mm | |||||||
|
≤16 |
>16-40 |
>40-60 |
>60-100 |
>100-150 |
>150 | ||
|
≥ | |||||||
|
Q195 |
|
195 |
185 |
|
|
|
|
|
Q215 |
A、B |
215 |
205 |
195 |
185 |
175 |
165 |
|
Q235 |
A、B
C、D |
235 |
225 |
215 |
205 |
195 |
185 |
|
Q255 |
A、B |
255 |
245 |
235 |
225 |
215 |
205 |
|
Q275 |
|
275 |
265 |
255 |
245 |
235 |
225 |
|
牌號 |
抗拉強度
ób／MPa |
伸長率δ5(％) |
沖擊試驗 | ||||||
|
鋼材厚度或直徑／mm |
溫度
／℃ |
V型沖擊吸收功
(縱向)Ak／J | |||||||
|
≤16 |
>16
-40 |
>40
-60 |
>60
-100 |
>100
-150 |
>150 | ||||
|
≥ | |||||||||