Qhov txawv ntawm 420 420J1 thiab 420J2 stainless hlau kev ua tau zoo yam ntxwv:
Qhov sib txawv tseem ceeb ntawm stainless hlau 420J1 thiab 420J2
420J1 muaj qee qhov kev hnav tsis kam thiab corrosion kuj, siab hardness, thiab nws cov nqi yog qis dua ntawm cov khoom tsis muaj steel hlau. Nws yog qhov tsim nyog rau kev ua haujlwm ib puag ncig uas xav tau cov hlau tsis zoo tib yam.
420J2 stainless hlau siv yog ib hom ntawm stainless hlau ua raws li American ASTM cov qauv; Nyiv tus qauv SUS420J2, tshiab lub teb chaws tus qauv 30Cr13, qub teb chaws tus qauv 3Cr13, digital code S42030, European txheem 1.4028.
420J1 stainless hlau: Tom qab quenching, hardness yog siab, thiab corrosion kuj yog zoo (sib nqus). Tom qab quenching, 420J2 stainless hlau yog ib qho nyuaj tshaj li 420J1 hlau (sib nqus).
Feem ntau, quenching kub ntawm 420J1 yog 980 ~ 1050 ℃. Lub hardness ntawm 980 ℃ cua sov roj quenching yog ho qis dua 1050 ℃ cua sov roj quenching. Lub hardness tom qab 980 ℃ roj quenching yog HRC45-50, thiab hardness tom qab 1050 ℃ roj quenching yog 2HRC siab dua. Txawm li cas los xij, microstructure tau tom qab quenching ntawm 1050 ℃ yog ntxhib thiab nkig. Nws raug nquahu kom siv 1000 ℃ cua sov thiab quenching kom tau txais cov qauv zoo dua thiab tawv.
Stainless hlau 420 / 420J1 / 420J2 Cov Ntawv & Phaj sib npaug:
| STANDARD | JIS | WERKSTOFF NR. | BS | AFNOR | SIS | UNS | AISI |
| SIB 420 | SIB 420 | 1.4021 | 420s29 ib | - | 2303 ib | S42000 | 420 |
| TIAB SA 420J1 | SUS 420J1 | 1.4021 | 420s29 ib | Z20C13 | 2303 ib | S42010 | 420l ua |
| TIAB SA 420J2 | SUS 420J2 | 1.4028 ib | 420s37 ib | Z20C13 | 2304 ib | S42010 | 4 20 M |
SS420/420J 1/ 420J2 Sheets, Phaj Chemical Composition (saky steel):
| Qib | C | Mn | Si | P | S | Cr | Ni | Mo |
| SIB 420 | 0.15 max | 1.0 max | 1.0 max | 0.040 max | 0.030 max | 12.0-14.0 Nws | - | - |
| SUS 420J1 | 0.16-0.25 dr hab | 1.0 max | 1.0 max | 0.040 max | 0.030 max | 12.0-14.0 Nws | - | - |
| SUS 420J2 | 0.26-0.40 Nws | 1.0 max | 1.0 max | 0.040 max | 0.030 max | 12.0-14.0 Nws | - | - |
SS 420 420J1 420J2 Sheets, Phaj Mechanical Properties (saky steel):
| Qib | Tensile zog Max | Yield zog (0.2% Offset) Max | Elongation (hauv 2 nti) |
| 420 | Ua haujlwm siab - 650 | MPa - 450 hli | 10% |
| 420j 1 | Qhov siab tshaj plaws - 640 | MPa - 440 | 20% |
| 420j 2 | Ua haujlwm siab - 740 | Ua haujlwm siab - 540 | 12% |
Lub hardness ntawm 420 series steel tom qab kev kho cua sov yog roughly HRC52 ~ 55, thiab kev ua tau zoo ntawm ntau yam xws li kev puas tsuaj kuj tsis zoo heev. Vim tias nws yooj yim dua los txiav thiab txhuam, nws yog qhov tsim nyog rau kev tsim cov riam. 420 stainless hlau tseem hu ua "txiav qib" martensitic hlau. 420 series steel muaj xeb zoo heev vim nws cov ntsiab lus carbon tsawg (cov ntsiab lus carbon: 0.16 ~ 0.25), yog li nws yog cov hlau zoo tshaj plaws rau kev tsim cov cuab yeej dhia dej.
Post lub sij hawm: Jul-07-2020