NM450 hnav-resistant steel phaj yog ib hom kev hnav-resistant steel phaj. Tom qab kub dov, nws yog cua sov kho los ntawm ncaj qha quenching thiab tempering thiab reheating quenching thiab tempering txheej txheem. Nws muaj lub zog txhua yam, uas yog 3 mus rau 5 npaug ntawm cov hlau tsis tshua muaj hlau zoo tib yam. Qhov tawv tawv tuaj yeem txhim kho tau zoo, feem ntau ncav cuag 360 ~ 450HB.
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 |
GNEE Group NM450 hnav-resistant steel phaj tshuaj xyuas cov duab:
