1.4112 Stainless hlau yog dab tsi?
Mar 04, 2026
Tso lus
1.4112 stainless hlau, feem ntau hu ua 440B lossis UNS S44003, yog ntau dua carbon martensitic stainless hlau hauv 440 series. Nws muaj qhov sib npaug ntawm qhov tawv tawv, hnav tsis kam, thiab nruab nrab corrosion kuj, nyob nruab nrab ntawm 440A thiab 440C. Qib no feem ntau yog siv rau cutlery, bearings, thiab valve Cheebtsam uas yuav tsum tau ua ke ntawm hardness thiab corrosion kuj.
Qhov nruab nrab - qib hardness martensitic no tau lees paub raws li ntau tus qauv.
| Txuj | Qib sib npaug |
|---|---|
| EN (Tebchaws Europe) | 1.4112 |
| ASTM / AISI (USA) | 440B, UNS S44003 |
| JIS (Nyiv) | SUS 440B |
| KS (Korea) | STS 440B |
Nws cov ntsiab lus carbon yog siab dua 440A tab sis qis dua 440C, sib npaug hardness thiab toughness.
| Element | C | Si | Mn | P | S | Cr | Mo |
|---|---|---|---|---|---|---|---|
| Cov ntsiab lus (%) | 0.75 - 0.95 | 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 | 16.0 - 18.0 | 0.4 - 0.8 |
Mechanical zog sib txawv heev nrog kev kho cua sov.
| Qhov xwm txheej | Yield zog (Rp0.2) | Tensile zog (Rm) | Elongation (A) | Hardness (HRC) |
|---|---|---|---|---|
| Annealed | ~ 450 MPa | ~ 740 MPa | ~ 14% | ~ 25 HRC |
| Hardened & Tempered | Ntau tshaj lossis sib npaug li 700 MPa | Ntau dua lossis sib npaug li 850 MPa | Ntau dua lossis sib npaug li 10% | 55 - 58 HRC |
Cov yam ntxwv tseem ceeb thiab kev siv ntawm 1.4112 / 440B
High Hardness thiab Hnav Resistance:Nws tuaj yeem raug kho kom sov kom ua tiav qhov siab tawv (txog ~ 58 HRC), muab kev hnav zoo thiab tuav ntug.
Nruab nrab Corrosion Resistance:Muaj kev tiv thaiv corrosion zoo dua li ntau cov cuab yeej hlau tab sis tsawg dua qib austenitic zoo li 304. Haum rau qhov chaw me me corrosive.
Sib nqus thiab Hardenable:Muaj zog sib nqus thiab teb zoo rau kev kho cua sov rau hardening.
Cov ntawv thov tseem ceeb:
Cov tais diav:Siab- riam, hniav, thiab cov cuab yeej phais zoo uas yuav tsum tau muaj qhov sib npaug ntawm qhov tawv thiab corrosion kuj.
Bearings thiab Valve Parts:Pob bearings, lub rooj zaum valve, thiab cov twj tso kua mis uas hnav tsis kam yog qhov tseem ceeb.
Cov cuab yeej muaj:Gauges, pwm, thiab tshuab qhov yuav tsum tau hardness thiab seem stability.
Cov cuab yeej kho hniav thiab phais:Cov cuab yeej xav tau cov npoo ntse thiab ua kom tsis muaj menyuam sib haum xeeb.
Dab tsi txawv 440B (1.4112) ntawm 440A thiab 440C?
Qhov sib txawv tseem ceeb yog cov ntsiab lus carbon: 440A muaj 0.60-0.75% C, 440B muaj 0.75-0.95% C, thiab 440C muaj 0.95-1.20% C. Qhov no ua rau 440B muab qhov nruab nrab hauv av-siab dua hardness thiab hnav tsis kam tshaj 440A, tab sis nrog cov machining zoo dua me ntsis. 440C. 440B feem ntau xaiv thaum qhov sib npaug ntawm hardness, toughness, thiab corrosion kuj yuav tsum tsis muaj qhov hnyav (thiab brittleness) ntawm 440C.
Dab tsi yog qhov pom zoo kho cua sov rau 440B stainless hlau?
Kev kho cua sov ib txwm muajaustenitizingntawm 1010-1065 degree, ua raws liroj quenchingkom ua tiav qhov siab tshaj plaws hardness. Qhov no yog ua raws litemperingntawm qhov kub ntawm 150-370 degree, nyob ntawm qhov xav tau sib npaug ntawm hardness thiab toughness. Lower tempering kub yield hardness dua; siab dua kub nce toughness nrog ib co txo nyob rau hauv hardness. Ob chav tempering feem ntau yog siv los ua kom muaj kev ntxhov siab thiab ruaj khov.
Nrhiav kev ntseeg siab ntawm 1.4112 / 440B Stainless Hlau?
GNEE Steel muab cov khoom zoo - zoo 440B (1.4112) stainless hlau hauv bar, hlau, thiab sawb cov ntaub ntawv, muaj nyob rau hauv annealed los yog tshav kub-kho tej yam kev mob kom tau raws li tej yam hardness thiab hnav tsis kam. Peb muab cov ntaub ntawv pov thawj thiab kev txhawb nqa. Yog tias koj muaj kev xav tau, thov koj xav tiv tauj peb.
Xa kev nug