NM400 yog ib hom hnav / corrosion resistant steel phaj los ntawm Tuam Tshoj.NM400 hnav resistant steel yog tshav kub kho los ntawm ncaj qha quenching thiab tempering thiab re-quenching thiab re-tempering txheej txheem raws li tom qab kub dov. Kev ntsuam xyuas qhov cuam tshuam tau ua tiav siv lub ntsuas ntsuas qhov cuam tshuam. Lub microstructure thiab pob txha tawg tau raug tshawb xyuas los ntawm kev sib xyaw ntawm optical microscopy, kis tau tus mob electron microscopy thiab scanning electron microscopy.NM400 muaj zog txhua yam, 3 mus rau 5 npaug ntawm cov hlau tsis tshua muaj hlau tsis tshua muaj hlau, thiab muab qhov tseem ceeb hauv qhov hardness, feem ntau. nyob rau hauv qhov ntau ntawm 360 txog 450 HB.
Tshuaj muaj pes tsawg leeg ntawm NM400:
| Hom | C | Si | Mn | P | S | Cr | Mo | Ni | B | CEV |
|---|---|---|---|---|---|---|---|---|---|---|
| NM 400 | Tsawg dua lossis sib npaug rau 0.24 | Tsawg dua lossis sib npaug rau 0.50 | Tsawg dua lossis sib npaug li 1.6 | Tsawg dua lossis sib npaug rau 0.025 | Tsawg dua lossis sib npaug rau 0.015 | 0.4~0.8 | 0.2~0.5 | 0.2~0.5 | Tsawg dua lossis sib npaug rau 0.005 |
Mechanical Property ntawm NM400:
| Hom | Thickness hli | Tensile Test MPa | Hardness | |||||||
|---|---|---|---|---|---|---|---|---|---|---|
| YS Rel MPa | TS Rm MPa | Elongation% | ||||||||
| NM 400 | 10-50 | Ntau dua lossis sib npaug rau 620 | 725-900 | Ntau dua lossis sib npaug li 16 | 380-460 | |||||
