Kev sib piv ntawm 410 thiab 431 Stainless Hlau: Basic Martensitic vs Nickel-Ntxiv Martensitic Qib

410 (basic martensitic) thiab 431 (nickel- ntxiv martensitic) yog cov neeg sawv cev ntawm ob pawg martensitic stainless hlau. Qhov sib txawv tseem ceeb nyob rau hauv qhov sib ntxiv ntawm 1.20-2.00% npib tsib xee hauv 431, uas ua rau nws muaj zog thiab corrosion kuj, thaum 410 tsom rau tus nqi- ua tau zoo thiab lub zog yooj yim. Qhov kev sib piv no qhia meej txog kev xaiv ntawm kev lag luam thiab kev ua haujlwm siab martensitic stainless hlau rau kev ua haujlwm sib txawv.

Core Parameter Sib piv

Parameter	410 Stainless hlau	431 Stainless hlau
Chemical Composition (wt%)	C Tsawg dua lossis sib npaug 0.15, Si Less dua lossis sib npaug rau 1.00, Mn Tsawg dua lossis sib npaug rau 1.00, P Tsawg dua lossis sib npaug 0.040, S Less dua lossis sib npaug rau 0.030, Cr=11.50-13.50, Fe=Sib npaug	C=0.15-0.25, Si Less dua lossis sib npaug rau 1.00, Mn Tsawg dua lossis sib npaug 1.00, P Tsawg dua lossis sib npaug rau 0.040, S Less dua lossis sib npaug 0.030, Cr=15.00-17.00, Ni=1.20-2.00, Fe=Sib npaug
Mechanical Properties (Quenched & Tempered)	Tensile Strength Ntau dua los yog sib npaug rau 515MPa, Yield Strength Ntau dua los yog sib npaug rau 310MPa, Elongation Ntau dua lossis sib npaug li 20%, Hardness Tsawg dua lossis sib npaug rau 45HRC, Impact Toughness Ntau dua lossis sib npaug rau 40J (20 degree)	Tensile Strength Ntau dua los yog sib npaug rau 1080MPa, Yield Strength Ntau dua los yog sib npaug rau 880MPa, Elongation Ntau dua lossis sib npaug li 12%, Hardness 38-43HRC, Impact Toughness Ntau dua lossis sib npaug rau 50J (-40 degree)
Kev Pabcuam Kub	-20℃txog 400℃(kev pabcuam txuas ntxiv)	-40℃txog 450℃(kev pabcuam txuas ntxiv)
Qib sib npaug	SUS410 (JIS), EN 1.4006, UNS S41000	SUS431 (JIS), EN 1.4057, UNS S43100

Qhov tseem ceeb ntawm kev ua tau zoo sib txawv: 1. Strength and Toughness: 431 muaj ultra-siab tensile zog (Ntau tshaj los yog sib npaug rau 1080MPa) thiab zoo heev low-kub toughness, uas muaj peev xwm tswj tau zoo toughness txawm nyob rau ntawm -40℃; 410 muaj lub zog nruab nrab thiab tawv, thiab yuav nkig thaum qhov kub thiab txias qis dua -20℃. 2. Corrosion Resistance: Qhov sib ntxiv ntawm npib tsib xee hauv 431 txhim khu kev ruaj ntseg ntawm cov zaj duab xis passivation, thiab nws cov corrosion kuj nyob rau hauv atmospheric, tsis muaj zog corrosive thiab marine atmospheric ib puag ncig ntawm 410 zoo dua. 410 yog qhov yooj yim rau xeb hauv qhov chaw ntub dej. 3. Kev Ua Haujlwm Kub Kub: 431 haum rau qhov kub thiab txias ua haujlwm qis mus rau -40 degree, thaum 410 tsuas yog siv tau rau saum toj -20℃. 4. Tus nqi: Vim qhov sib ntxiv ntawm npib tsib xee, 431 yog 50-60% yooj yim dua rau Machining: tshuab thiab haum rau ntau lawm; lub zog siab ntawm 431 nce txiav tsis kam, yuav tsum tau ua cov nqi ntau dua.

Siv tau Scenario Distinction: 410 yog haum rau kev lag luam, nruab nrab -cov khoom muaj zog nyob rau hauv ib puag ncig me me, xws li qis- lub cev lub cev muaj zog, lub twj tso kua mis huv, cov khoom noj khoom haus, cov khoom siv hauv tsheb, thiab cov cuab yeej siv phais mob . 431 yog qhov tsim nyog rau siab - cov khoom ua tau zoo nyob rau hauv cov khoom siv hluav taws xob hnyav, xws li cov khoom siv automotive, xws li hauv txias cov cheeb tsam), siab -siab valve cores, marine twj tso kua mis ncej, thiab auxiliary Cheebtsam ntawm aircraft engine.

Tswv yim Q&A

Q1: Lub luag haujlwm tseem ceeb ntawm npib tsib xee hauv 431 yog dab tsi?

A1: Nickel yog lub zog austenite stabilizer. Thaum lub sij hawm kho cua sov, nws refines lub martensite qauv, zoo heev txhim kho lub toughness thiab qis - kub ua hauj lwm ntawm 431; Nyob rau tib lub sijhawm, nws txhim kho corrosion kuj ntawm cov yeeb yaj kiab passivation, ua kom 431 hloov mus rau qhov chaw hnyav xws li marine thiab qis - qhov kub thiab txias.

Q2: Vim li cas 410 tsis haum rau qhov qis - kub (-40 degree) ib puag ncig?

A2: 410 tsis muaj npib tsib xee. Nws cov qauv martensite yuav raug hloov pauv ntawm qhov kub thiab txias, uas ua rau muaj qhov tsis zoo ntawm cov tawv nqaij thiab cov pob txha tawg yooj yim; qhov sib ntxiv ntawm npib tsib xee hauv 431 zam qhov teeb meem no.

Q3: 410 puas tuaj yeem siv nyob rau hauv marine atmospheric ib puag ncig?

A3: Tsis pom zoo. Nws cov kev tiv thaiv corrosion tsis zoo, thiab pom tseeb xeb yuav tshwm sim tom qab 1-2 xyoos ntawm kev tawm sab nraum zoov hauv cov ntug dej hiav txwv; 431 tuaj yeem siv rau marine atmospheric Cheebtsam, nrog lub neej ua haujlwm ntawm 5-8 xyoo.

Q4: Cov txheej txheem kho cua sov dab tsi tsim nyog rau 431 kom ua tiav lub zog thiab tawv?

A4: Quench ntawm 980-1050 degree, roj txias + kub ntawm 200-300 degree, cua txias; Cov txheej txheem no tuaj yeem ua rau lub hardness ntawm 431 mus txog 38-43HRC, thaum tuav zoo heev toughness thiab lub zog.

Q5: Yuav ua li cas xaiv ntawm 410 thiab 431?

A5: Xaiv 410 yog tias tus nqi yog qhov tseem ceeb thiab qhov chaw ua haujlwm yog me me (chav kub, qhuav, tsis tshua muaj kev cuam tshuam); xaiv 431 yog tias muaj lub zog siab, siab tawv, qis - qhov kub thiab txias yuav tsum tau muaj kev tiv thaiv corrosion, thiab tus nqi tsis yog qhov tseem ceeb.