P355GH和P355NH的区别订货137**8188**0376舞钢
化学成分的区别
钢种 | %质量 | ||||||||||||||||
牌号 | 数字 | C | Si, | Mn | P | S | Al 全 | N | Cr | Cu | Mo | Nb | Ni | Ti | V | Nb+Ti+ V | |
P355GH | 1.0473 | 0.10-0.22 | ≤ 0.60 | 1.10-1.70 | ≤ 0.025 | ≤ 0.015 | ≥ 0.020 | ≤ 0.012d | ≤ 0.30 | ≤ 0.30 | ≤ 0.08 | ≤0.020 | ≤0.30 | ≤0.03 | ≤0.02 | ≤0.70 | |
P355NH | 1.0565 | ≤0.18 | ≤ 0.50 | 1.10~1.70 | ≤ 0.025 | ≤ 0.015 | ≥ 0.020c,d | ≤ 0.012 | ≤ | ≤ | ≤ | ≤0.05 | ≤0.05 | ≤0.03 | ≤0.10 | ≤0.12 | |
c:如果添加 Nb、Ti、或 V 氮固定元素,则全铝(即 Altotal)含量可以低于小值。d:如果仅用铝固定氮,则Al/N≥2 应适用。 |