ASTM A519-规格涵盖了几个等级的碳素钢和合金钢机械管,无论是热加工的还是冷加工的。ASTM A519用于机械管的钢可以铸锭,也可以连铸。当不同等级的钢按顺序连铸时,需要鉴别所产生的过渡材料。
无缝管是一种无焊缝的管状产品。它通常由热加工钢制造,如果有必要,随后对热加工管状产品进行冷加工,以生产所需的形状、尺寸和性能。管子应配置成以下形状:圆形、方形、矩形和特殊截面。应进行热分析以确定所规定元素的百分比。如果采用二次熔炼工艺,则热分析应从一个重熔锭或每个初级熔体的一个重熔锭的产物中获得。当指定时,管材成型前应涂上一层油膜以防止生锈。
| OD(毫米) | 壁厚单位(mm) | |||||||||||||
| 2 | 2.5 | 3. | 3.5 | 4 | 4.5 | 5 | 6 | 6.5 7 | 7.5 8 | 8.5 9 | -10 - 9.5 | 11 | 12 | |
| Φ25 -Φ28 | ● | ● | ● | ● | ● | ● | ||||||||
| Φ32 | ● | ● | ● | ● | ● | ● | ||||||||
| Φ34 -Φ36 | ● | ● | ● | ● | ● | ● | ||||||||
| Φ38 | ● | ● | ● | ● | ● | ● | ||||||||
| Φ40 | ● | ● | ● | ● | ● | |||||||||
| Φ42 | ● | ● | ● | ● | ● | |||||||||
| Φ45 | ● | ● | ● | ● | ● | ● | ||||||||
| Φ48 -Φ60 | ● | ● | ● | ● | ● | ● | ● | |||||||
| Φ63.5 | ● | ● | ● | ● | ● | ● | ● | |||||||
| Φ68 -Φ73 | ● | ● | ● | ● | ● | ● | ||||||||
| Φ76 | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ||||
| Φ80 | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ||||
| Φ83 | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ||||
| Φ89 | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ||||
| Φ95 | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ||||
| Φ102 | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ||||
| Φ108 | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ||||
| Φ114 | ● | ● | ● | ● | ● | ● | ● | ● | ● | |||||
| Φ121 | ● | ● | ● | ● | ● | ● | ● | ● | ● | |||||
| Φ127 | ● | ● | ● | ● | ● | ● | ● | ● | ● | |||||
| Φ133 | ● | ● | ● | ● | ● | ● | ● | ● | ● | |||||
| Φ140 | ● | ● | ● | ● | ● | ● | ● | ● | ||||||
| Φ146 | ● | ● | ● | ● | ● | ● | ● | ● | ||||||
| Φ152 | ● | ● | ● | ● | ● | ● | ● | ● | ||||||
| Φ159 | ● | ● | ● | ● | ● | ● | ● | ● | ||||||
| Φ168 | ● | ● | ● | ● | ● | ● | ● | ● | ||||||
年级 |
C | 锰 | P≤ | S≤ | 如果 | Cr | 莫 |
| 1008 | ≤0.10 |
0.30 - -0.50 |
0.040 | 0.050 | - | - | - |
| 1010 | 0.08 - -0.13 | 0.30 - -0.60 | 0.040 | 0.050 | - | - | - |
| 1018 | 0.15 - -0.20 | 0.60 - -0.90 | 0.040 | 0.050 | - | - | - |
| 1020 | 0.18 - -0.23 | 0.30 - -0.60 | 0.040 | 0.050 | - | - | - |
| 1025 | 0.22 - -0.28 | 0.30 - -0.60 | 0.040 | 0.050 | - | - | - |
| 1026 | 0.22 - -0.28 | 0.60 - -0.90 | 0.040 | 0.050 | - | - | - |
| 4130 | 0.28 - -0.33 | 0.40 - -0.60 | 0.040 | 0.050 | 0.15 - -0.35 | 0.80 - -1.10 | 0.15 - -0.25 |
| 4140 | 0.38 - -0.43 | 0.75 - -1.00 | 0.040 | 0.050 | 0.15 - -0.35 | 0.80 - -1.10 | 0.15 - -0.25 |
| 年级 | 条件 | MPa拉伸点 | 屈服点 | 伸长 |
| 1020 | 连续波 | ≥414 |
≥483 |
≥5% |
| 老 | ≥345 | ≥448 | ≥10% | |
| 一个 | ≥193 | ≥331 | ≥30% | |
| N | ≥234 | ≥379 | ≥22% | |
| 1025 | 连续波 | ≥448 | ≥517 | ≥5% |
| 老 | ≥379 | ≥483 | ≥8% | |
| 一个 | ≥207 | ≥365 | ≥25% | |
| N | ≥248 | ≥379 | ≥22% | |
| 4130 | 老 | ≥586 | ≥724 | ≥10% |
| 一个 | ≥379 | ≥517 | ≥30% | |
| N | ≥414 | ≥621 | ≥20% | |
| 4140 | 老 | ≥689 | ≥855 | ≥10% |
| 一个 | ≥414 | ≥552 | ≥25% | |
| N | ≥621 | ≥855 | ≥20% |
请注意表2中以下缩写的含义:
yabo亚搏官网合金钢管中除碳元素外,还含有大量的其他元素,如镍、铬、硅、锰、钨、钼、钒和少量的其他普遍接受的元素,如锰、硫、硅和磷。