文章詳情
低溫用無縫和焊接鋼管
日期：2025-08-10 20:14
瀏覽次數：909
摘要：
低溫用無縫和焊接鋼管
標準：
ASTM A333——Seamless and Welded Steel Pipe for Low-Temperature Service
主要生產鋼管牌號：
Grade 1, Grade 3, Grade 4, Grade 6, Grade 7, Grade 8, Grade 9, Grade 10, Grade 11
沖擊溫度：
| 級別 | *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 | | | | | |
| 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 | | | |
