標準
ASTM A333——Seamless and Welded Steel Pipe for Low-Temperature Service
衝擊溫度
級別 | 最低衝擊試驗溫度 | |
℉ | ℃ | |
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 | ||||||
Grade 4 | ≤0.12 | 0.18-0.37 | 0.50-1.05 | ≤0.025 | ≤0.025 | 0.44-1.01 | 0.47-0.98 | 0.40-0.75 | 0.04-0.30 | |||
Grade 6 | ≤0.30 | ≥0.10 | 0.29-1.06 | ≤0.025 | ≤0.025 | |||||||
Grade 7 | ≤0.19 | 0.13-0.32 | ≤0.90 | ≤0.025 | ≤0.025 | 2.03-2.57 | ||||||
Grade 8 | ≤0.13 | 0.13-0.32 | ≤0.90 | ≤0.025 | ≤0.025 | 8.40-9.60 | ||||||
Grade 9 | ≤0.20 | 0.40-1.06 | ≤0.025 | ≤0.025 | 1.60-2.24 | 0.75-1.25 | ||||||
Grade 10 | ≤0.20 | 0.10-0.35 | 1.15-1.50 | ≤0.03 | ≤0.015 | ≤0.15 | ≤0.25 | ≤0.015 | ≤0.50 | ≤0.12 | ≤0.06 | |
Grade 11 | ≤0.10 | ≤0.35 | ≤0.6 | ≤0.025 | ≤0.025 | ≤0.50 | 35.0-37.0 | ≤0.50 | ||||
