1.4028 Stainless hlau yog dab tsi?
Mar 11, 2026
Tso lus
1.4028 stainless hlau, feem ntau hu ua 420J2 los yog UNS S42000 (siab dua carbon variant), yog ib tug martensitic stainless hlau nrog nce cov ntsiab lus carbon nyob rau hauv 420 tsev neeg. Nrog cov pa roj carbon ntau ntawm 0.26-0.35%, nws muaj qhov ua tau zoo dua thiab hnav tsis kam tshaj tus qauv 420 (1.4021), ua rau nws tshwj xeeb tshaj yog tsim rau cov ntawv thov uas xav tau kev tuav zoo tshaj plaws thiab kev puas tsuaj, xws li high-end cutlery, cov cuab yeej phais, thiab cov hniav muaj.
Qhov siab dua - qib carbon martensitic no yog tus qauv raws li cov txheej txheem thoob ntiaj teb tseem ceeb.
| Txuj | Qib sib npaug |
|---|---|
| EN (Tebchaws Europe) | 1.4028 |
| ASTM / AISI (USA) | 420J2, UNS S42000 |
| JIS (Nyiv) | SUS420J2 |
| KS (Korea) | STS420J2 |
Nws cov ntsiab lus siab carbon muab kev txhim kho hardenability thiab siab tshaj plaws hardness piv rau qis dua -carbon 420 variants.
| Element | C | Si | Mn | P | S | Cr |
|---|---|---|---|---|---|---|
| Cov ntsiab lus (%) | 0.26 - 0.35 | Tsawg dua los yog sib npaug rau 1.0 | Tsawg dua los yog sib npaug rau 1.0 | Tsawg dua los yog sib npaug li 0.04 | Tsawg dua lossis sib npaug li 0.03 | 12.0 - 14.0 |
Cov khoom siv kho tshuab muaj kev cuam tshuam cov ntsiab lus ntawm cov pa roj carbon ntau dua, nrog rau kev ua kom muaj zog thiab hardness muaj peev xwm.
| Qhov xwm txheej | Yield zog (Rp0.2) | Tensile zog (Rm) | Elongation (A) | Hardness (HRC) |
|---|---|---|---|---|
| Annealed | ~ 380 MPa | ~ 700 MPa | ~ 18% | ~ 22 HRC |
| Hardened & Tempered | Ntau dua lossis sib npaug li 600 MPa | Ntau dua lossis sib npaug li 800 MPa | Ntau dua lossis sib npaug li 10% | 53 - 58 HRC |
Cov yam ntxwv tseem ceeb thiab kev siv ntawm 1.4028 / 420J2
Superior Hardness thiab Wear Resistance:Ua tiav qhov siab tshaj plaws hardness (txog 58 HRC) tshaj tus qauv 420 vim muaj cov ntsiab lus ntawm cov pa roj carbon ntau ntxiv, muab cov ntug tuav tau zoo thiab ua kom puas.
Nruab nrab Corrosion Resistance:Zoo ib yam li tus qauv 420, muaj kev tiv thaiv zoo rau qhov chaw me me, dej tshiab, thiab cov khoom noj acids, tab sis tsis haum rau cov mob hnyav.
Sib nqus thiab Kub Treatable:Muaj zog sib nqus thiab teb zoo rau kev kho cua sov, txawm tias cov pa roj carbon ntau dua yuav tsum tau ceev faj tswj kom tsis txhob tawg.
Cov yam ntxwv zoo polishing:Nws tuaj yeem polished rau qhov ua tiav siab, qhov tseem ceeb rau cov cuab yeej phais thiab cov cutlery zoo.
Cov ntawv thov tseem ceeb:
High-High Cutlery:Cov cuab yeej siv hauv chav ua noj, riam tua tsiaj, thiab hnab tshos riam yuav tsum muaj kev tuav tuav zoo heev.
Surgical Instruments:Scalpels, forceps, retractors, thiab lwm yam cuab yeej xav tau cov npoo ntse thiab ua kom tsis muaj menyuam.
Industrial Blades:Slitting riam, shearing hniav, thiab txiav cov cuab yeej rau ntawv, yas, thiab lub teeb hlau.
Txiab thiab Shears:Cov kws txiav plaub hau, txiab txiab, thiab cov cuab yeej txiav textile.
Valve Cheebtsam:Cov rooj zaum thiab stems hauv daim ntawv thov yuav tsum tau hnav tsis kam.
Qhov txawv ntawm 1.4021 (420) thiab 1.4028 (420J2) yog dab tsi?
Qhov sib txawv tseem ceeb yog cov ntsiab lus carbon . 1.4021 muaj carbon 0.16-0.25%, thaum 1.4028 muaj carbon 0.26-0.35%. Cov pa roj carbon ntau dua no tso cai rau 1.4028 kom ua tiav qhov siab tshaj plaws hardness (58 HRC vs 55 HRC) thiab hnav tsis kam, tab sis ntawm tus nqi ntawm kev txo cov tawv nqaij thiab kev kho cua sov me ntsis nyuaj dua . 1.4028 kuj tseem muaj zog dua me ntsis raws li-annealed lub zog tab sis qis dua ductility . 1.4021 yog qhov zoo dua rau cov ntawv thov kom muaj qhov sib npaug ntawm hardness thiab hardness 1.402 qhov siab tshaj plaws, thaum hnav yog qhov siab tshaj plaws. tseem ceeb.
Yuav ua li cas 1.4028 stainless hlau yuav tsum tau kho cua sov?
Kev kho cua sov yuav tsum tau ua tib zoo tswj vim muaj cov ntsiab lus carbon ntau dua.Hardening: Austenitize ntawm 980-1030 degree, nrog preheating pom zoo ntawm 760-815℃los tiv thaiv thermal shock. Quench nyob rau hauv cov roj los yog huab cua nyob ntawm seb qhov luaj li cas; roj quenching yog ib txwm rau siab tshaj plaws hardness.Tempering: Kub tam sim ntawd tom qab quenching los txo cov kev ntxhov siab, feem ntau ntawm 150-250℃rau siab tshaj plaws hardness (53-58 HRC). Tempering ntawm 350-550℃yuav tsum tau zam vim embrittlement. Rau kev txhim kho toughness nrog ib co hardness txo, temper ntawm 550-650 degree, tab sis qhov no yuav ho txo hardness rau 35-45 HRC. Ob chav tempering feem ntau muaj txiaj ntsig zoo rau kev ntxhov siab thiab kev ruaj ntseg.
Nrhiav kev ntseeg siab ntawm 1.4028 / 420J2 Stainless Hlau?
GNEE Steel muab cov khoom siv siab- zoo 420J2 (1.4028) martensitic stainless hlau nyob rau hauv bar, hlau, ntawv, thiab sawb daim ntawv, muaj nyob rau hauv annealed mob rau machining los yog ua ntej- hardened rau cov neeg siv khoom specifications. Peb muab cov ntaub ntawv pov thawj tag nrho (EN 10204 3.1) thiab kev txhawb nqa suav nrog kev txiav txiav, sib tsoo, thiab kev kho cua sov. Yog tias koj muaj kev xav tau, thov koj xav tiv tauj peb.
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