標準
ASTM A333——Seamless and Welded Steel Pipe for Low-Temperature Service
主要生產(chǎn)鋼管牌號
Grade 1, Grade 3, Grade 4, Grade 6, Grade 7, Grade 8, Grade 9, Grade 10, Grade 11
沖擊溫度
級別 |
最低沖擊試驗溫度 |
|
℉ |
℃ |
|
Grade 1 |
-50 |
-45 |
Grade 3 |
-150 |
-100 |
Grade 4 |
-150 |
-100 |
Grade 6 |
-50 |
-45 |
Grade 7 |
-100 |
-75 |
Grade 8 |
-320 |
-195 |
Grade 9 |
-100 |
-75 |
Grade 10 |
-75 |
-60 |
力學性能
標準 |
牌號 |
抗拉強度（MPa） |
屈服強度（MPa） |
伸長率（％） |
|
縱 向 |
橫 向 |
||||
ASTM A333 |
Grade 1 |
≥380 |
≥205 |
≥35 |
≥25 |
Grade 3 |
≥450 |
≥240 |
≥30 |
≥20 |
|
Grade 4 |
≥415 |
≥240 |
≥30 |
≥16.5 |
|
Grade 6 |
≥415 |
≥240 |
≥30 |
≥16.5 |
|
Grade 7 |
≥450 |
≥240 |
≥30 |
≥22 |
|
Grade 8 |
≥690 |
≥515 |
≥22 |
||
Grade 9 |
≥435 |
≥315 |
≥28 |
||
Grade 10 |
≥550 |
≥450 |
≥22 |
||
Grade 11 |
≥450 |
≥240 |
≥18 |
||
化學成分
標準 |
牌號 |
化學成分（％） |
||||||||||
C |
Si |
Mn |
P |
S |
Cr |
Ni |
Cu |
Mo |
V |
Al |
||
ASTM A333 |
Grade 1 |
≤0.30 |
0.40-1.06 |
≤0.025 |
≤0.025 |
|||||||
Grade 3 |
≤0.19 |
0.18-0.37 |
0.31-0.64 |
≤0.025 |
≤0.025 |
3.18-3.82 |
||||||
