标准
|
牌号
|
抗拉强度(MPa)
|
屈服强度(MPa)
|
伸长率(%)
|
|
纵向
|
横向
|
||||
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
|
|
级别
|
最低冲击试验温度
|
|
℉
|
℃
|
|
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
|