NM450 yog lub siab hnav-resistant steel phaj nrog Brinell hardness ntawm 450 HBW.
NM450 steel daim hlau yog hnav resistant steel daim hlau nrog siab hardness. Cov hlau phaj no nyob rau hauv kev xav tau siab hauv kev tsim khoom lag luam. Vim lawv hnav tsis kam, cov phaj hlau no ua tau zoo hauv kev txo qhov chaw.
NM450 steel daim hlau muaj qhov zoo weldability thiab kev ua haujlwm zoo hauv oxidizing ib puag ncig.NM450 hnav daim hlau muaj kev tiv thaiv corrosion zoo thiab kev ua haujlwm siab txawm tias nyob hauv qhov kub thiab txias.
Chemical Composition Ntawm NM 450 Phaj:
| NM450 Chemical Compositiom | |||||||||||
| Phaj | C | Si | Mn | P | S | Cr | Ni | Mo | B | CEV | CET |
| tuab mm | max % | max % | max % | max % | max % | max % | max % | max % | max % | typv ua | typv ua |
| 3-(8) | 0.19 | 0.7 | 1.6 | 0.025 | 0.01 | 0.25 | 0.25 | 0.25 | 0.004 | 0.41 | 0.30 |
| 8-20 | 0.21 | 0.7 | 1.6 | 0.025 | 0.01 | 0.50 | 0.25 | 0.25 | 0.004 | 0.47 | 0.34 |
| (20)-40 | 0.23 | 0.7 | 1.6 | 0.025 | 0.01 | 1.00 | 0.25 | 0.25 | 0.004 | 0.57 | 0.37 |
| (40)-50 | 0.23 | 0.7 | 1.6 | 0.025 | 0.01 | 1.40 | 0.25 | 0.60 | 0.004 | 0.59 | 0.36 |
| (50)-80 | 0.26 | 0.7 | 1.6 | 0.025 | 0.01 | 1.40 | 1.00 | 0.60 | 0.004 | 0.72 | 0.41 |
Mechanical Properties rau NM 450 High Tensile Phaj:
| Mechanical zog ntawm NM 450 | |||||
| Thickness / hli | ReL / MPa | Rm / MPa | A/% | Hardness/HBW10/3000 | Kev cuam tshuam -20 degree /J |
| 8 | 1250 | 1460 | 16 | 445 | 40 |
| 12 | 1290 | 1470 | 17 | 462 | 43 |
| 20 | 1370 | 1450 | 17 | 473 | 42 |
| 25 | 1230 | 1480 | 16.5 | 465 | 43 |
