1.4021 Stainless hlau yog dab tsi?

1.4021 stainless hlau, feem ntau hu ua 420 los yog UNS S42000, yog ib qho martensitic stainless hlau uas muaj kev cuam tshuam corrosion thiab muaj peev xwm ua kom tawv tawv kom ua tiav lub zog thiab hnav tsis kam. Nws yog dav siv rau cutlery, cov cuab yeej phais, thiab ntau yam khoom siv kho tshuab qhov twg hardness, ntug tuav, thiab nruab nrab corrosion kuj yuav tsum tau.

 

Qhov hardenable martensitic qib no yog tus qauv raws li ntau lub tshuab thoob ntiaj teb.

Txuj	Qib sib npaug
EN (Tebchaws Europe)	1.4021
ASTM / AISI (USA)	420, UA S42000
JIS (Nyiv)	SUS420J1
KS (Korea)	STS 420

Nws muaj pes tsawg leeg yog nyob ib ncig ntawm chromium rau corrosion kuj thiab carbon rau hardenability.

Lub ntsiab	C	Si	Mn	P	S	Cr
Cov ntsiab lus (%)	0.16 - 0.25	Tsawg dua los yog sib npaug rau 1.0	Tsawg dua los yog sib npaug li 1.5	Tsawg dua lossis sib npaug li 0.04	Tsawg dua los yog sib npaug li 0.03	12.0 - 14.0

Cov khoom siv kho tshuab sib txawv raws li kev kho cua sov (annealed vs. hardened & tempered).

Qhov xwm txheej	Yield zog (Rp0.2)	Tensile zog (Rm)	Elongation (A)	Hardness (HRC)
Annealed	~ 345 MPa	~ 655 MPa	~ 20%	~ 20 HRC
Hardened & Tempered	Ntau dua lossis sib npaug li 550 MPa	Ntau dua lossis sib npaug li 740 MPa	Ntau dua lossis sib npaug li 12%	50 - 55 HRC

 

Cov yam ntxwv tseem ceeb thiab kev siv ntawm 1.4021 / 420

High Hardness thiab Hnav Resistance:Nws tuaj yeem kho cua sov kom ua tiav qhov tawv tawv (txog ~ 55 HRC), muab kev hnav zoo heev thiab kev tuav ntug.

Nruab nrab Corrosion Resistance:Muab qhov tsim nyog tiv thaiv dej, tshuaj me me, thiab huab cua puag, tab sis tsis haum rau qhov chaw muaj corrosive hnyav.

Magnetic thiab Machinable:Muaj zog sib nqus nyob rau hauv txhua yam mob. Nyob rau hauv lub xeev annealed, nws muaj kev ncaj ncees machinability.

 

Cov ntawv thov tseem ceeb:

Cutlery thiab Blades:Riam, txiab, rab chais, thiab phais scalpels.

Surgical and Dental Instruments:Forceps, clamps, thiab cov cuab yeej kho hniav.

Industrial Components:Twj shafts, valve rooj, bearings, thiab pwm.

General Engineering:Hnav cov phaj, cov lus qhia, thiab lwm yam khoom uas yuav tsum tau ua kom tawv.

 

Dab tsi yog cov txheej txheem kev kho cua sov rau 420 (1.4021) stainless hlau?
Cov txheej txheem koom nrogtawv: cua sov rau 980-1050 degree, tuav kom ua tiav tag nrho austenitization, ua raws li cov roj los yog cua quenching los tsim ib qho nyuaj martensitic qauv. Qhov no yog ua raws litempering: reheating rau qhov kub ntawm 150-400℃(nyob ntawm seb qhov xav tau hardness / toughness tshuav nyiaj li cas) los txo cov kev ntxhov siab sab hauv thiab ua tiav cov khoom siv kho tshuab kawg. Tsawg tempering kub yield dua hardness tab sis qis toughness; siab dua kub nce toughness nrog ib co txo ​​nyob rau hauv hardness. Annealing yog ua ntawm 830-900℃nrog qeeb txias kom soften cov khoom rau machining.

 

420 stainless hlau piv rau 440C li cas ntawm kev ua tau zoo?
Ob leeg yog martensitic cutlery steels, tab sis 440C muaj cov pa roj carbon ntau dua (0.95-1.20%) thiab chromium (16-18%), tso cai rau nws kom ua tiav hardness ntau dua (txog 62 HRC) thiab me ntsis corrosion kuj zoo dua. 420 yog suav tias yog "softer" stainless nrog zoo toughness thiab yooj yim dua rau kev siv lub xeev siab dua {5} riam thiab bearings qhov siab tshaj plaws hnav tsis kam yog xav tau, thaum 420 yog ib qho ntawm cov hom phiaj dav dav thiab cov cuab yeej phais uas yuav tsum muaj qhov sib npaug ntawm qhov tawv, tawv, thiab corrosion kuj.

 

Nrhiav kev ntseeg siab ntawm 1.4021 / 420 Stainless Hlau?
GNEE Steel muab ntau yam 420 (1.4021) martensitic stainless hlau nyob rau hauv bar, hlau, ntawv, 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 lub zog yuav tsum tau. Peb muab cov ntaub ntawv pov thawj thiab kev txhawb nqa. Yog tias koj muaj kev xav tau, thov koj xav tiv tauj peb.