Thaum xaiv cov hlau stainless rau kev siv cov ntawv thov tau, ob qib feem ntau pivEn 1.4404 (AISI 316L)Thiab tusEn 1.4571 (AISI 316TI)Cov. Ob leeg puav leej muaj 316 tsev neeg, paub rau lawv cov kev tiv thaiv corrosion zoo heev, tshwj xeeb hauv chloride ib puag ncig. Txawm li cas los xij, lawv qhov sib txawv hauv kev sib xyaw, cov khoom siv mechanies, thiab cov ntawv thov tuaj yeem cuam tshuam rau kev ua tau ntev ntev thiab cov nqi.
Dab tsi yog 1.4404 stainless hlau?
Cov degree1.4404los sis316LYog hom Aisi 316 Austenitic Stainless hlau, uas muaj cov kev ua tau zoo corrosion, uas muaj cov ntsiab lus chromium thiab molybdenum cov ntsiab lus tsawg.
Cov khoom siv twg yog sib npaug rau 1.4571?
Nws1.4571yog qib ntawm stainless hlau, tseem hu uaX6cnimoti17-12-2los sisAISI 316TICov.
1. Tshuaj lom neeg sib xyaw
| Tiv kis | Cov Qauv Txheej Txheem | Lub ntsiab alloying ntsiab | Tshwj Xeeb Tshwj Xeeb |
|---|---|---|---|
| 1.4404 | AISI 316L | CR 16.5-18.5%, NI 10-13%, MO 2-2.5%, C Tsawg dua lossis sib npaug 0.03% | Cov roj carbon tsawg rau kev zoo heev weldability thiab kuj mus rau intergranular corrosion |
| 1.4571 | AISI 316TI | CR 16.5-18.5%, NI 10-13%, MO 2-2.5%, TI QAIB | Qhov sib ntxiv ntawm titanium tiv thaiv carbide nag lossis kub |
2. Corrosion Kuj
1.440 (316L): Tshwj xeeb tsis kam rau pitting thiab crevice corrosion hauv chlorinated kev daws teeb meem. Qhov zoo tshaj plaws rau cov tubrog nkoj, tshuaj thiab kev lag luam khoom noj.
1.4571 (316Ti): Sib piv tag nrho cov corrosion tsis kam, tab sis muaj kev ua tau zoo dua nyob rau hauv lub sijhawm ntev ntawm 500-800 degrees ua tsaug rau titanium stetilization.
3. Cov Khoom Siv Kho Tshuab
| Ntiag tug | 1.440 (316L) | 1.4571 (316Ti) |
|---|---|---|
| Tensile lub zog (mpa) | 500-700 | 500-700 |
| Yield zog (mpa) | Ntau dua los yog sib npaug rau 220 | Ntau dua los yog sib npaug rau 220 |
| Elongation (%) | Ntau dua los yog sib npaug rau 40 | Ntau dua los yog sib npaug rau 40 |
4. Weldability thiab raug
1.4404: Zoo heev Veldability tsis tas yuav tsum muaj kev kho cua sov tom qab Weld. Xav txog cov kav dej, tso tsheb hlau luam thiab ua kab haum.
1.4571: Weldable, tab sis me ntsis nyuaj rau cov txheej txheem; Titanium stabilization txo qhov kev pheej hmoo ntawm intergranular corrosion thaum lub sij hawm vuam hauv cov kab tuab.
Qhov twg qib ntawm stainless hlau muaj qhov kev kub siab tshaj plaws?
1.440 (316L): Pom zoo rau kev pabcuam kub txog li 400 degrees, tom qab uas nws yuav raug kev txom nyem los ntawm intergranular corrosion.
1.4571 (316Ti): Titanium stabilization tso cai rau nws kom tawm tsam txog qhov kub thiab txias txog 600 degrees, ua rau nws haum rau cov chaw ua kom sov, kev hloov cua sov thiab tso cua sov.
Ntau heev1.440 (316L)xws li1.4571 (316Ti)Lawv zoo kawg nkaus uas tsis siv neeg nyob hauv 316 tsev neeg. Lub ntsiab sib txawv lus dag nyob rau hauv cov roj carbon weldability versus titanium stabilization rau kev kub siab tiv taus kub siab. Koj txoj kev xaiv yuav tsum yog nyob ntawm kev ua haujlwm ib puag ncig, tsim khoom siv, thiab tag nrho tag nrho lub neej.
HauvGnee, peb muab cov leeg tag nrho ntawm cov hlab, nplooj ntawv, daim hlau thiab txiav-rau-loj daws teeb meem hauv cov qib1.4404thiab1.4571, kom ua raws li cov qauvHauv,ASTMthiabASME.Mail:es@gescosteel.com
1.440 thiab 1.4571 stainless hlau los xij
