304L thiab 904L stainless hlauyog ob qho austenitic stainless hlau uas muaj cov khoom sib txawv loj heev. 304L yog qhov kev xaiv zoo tshaj plaws rau cov qauv ib puag ncig-xws li cov khoom siv hauv kev ua zaub mov thiab kev kho vaj tse vaj tsev- whereas 904L, los ntawm kev tsim txiaj ntawm nws cov ntsiab lus alloy siab dua, ua kom pom qhov tsis muaj zog ntawm cov khoom noj muaj zog thiab cov kua qaub ntau dua.
Kev sib piv tshuaj lom neeg
|
Element |
S904L |
S304L |
|---|---|---|
|
Cov pa roj carbon (C) |
Tsawg dua lossis sib npaug li 0.020% |
Tsawg dua lossis sib npaug li 0.03% |
|
Chromium (Cr) |
19.00-23.00% |
18.00-20.00% |
|
Nickel (Ni) |
23.00-28.00% |
8.0-12.0% |
|
Molybdenum (hli) |
4.0-5.0% |
Tsis muaj |
|
Copper (Cu) |
1.0-2.0% |
Tsis muaj |
|
Manganese (Mn) |
Tsawg dua lossis sib npaug li 2.0% |
Tsawg dua lossis sib npaug li 2.0% |
|
Silicon (Si) |
Tsawg dua lossis sib npaug li 1.0% |
Tsawg dua lossis sib npaug li 0.75% |
|
Phosphorus (P) |
Tsawg dua lossis sib npaug li 0.045% |
Tsawg dua lossis sib npaug li 0.045% |
|
Sulfur (S) |
Tsawg dua lossis sib npaug li 0.03% |
Tsawg dua lossis sib npaug li 0.03% |
Mechanical Properties Sib piv
|
Mechanical Property |
S904L |
S304L |
|---|---|---|
|
Tensile zog |
490-710MPa |
485-620MPa |
|
Yield zog |
Ntau dua lossis sib npaug li 220MPa |
Ntau dua lossis sib npaug li 170MPa |
|
Elongation |
Ntau dua lossis sib npaug li 35% |
Ntau dua lossis sib npaug li 40% |
|
Brinell Hardness ( |
Tsawg dua lossis sib npaug rau 210HB |
Tsawg dua lossis sib npaug rau 201HB |
|
Kub Adaptation Range |
-196℃rau 400 degree |
-196℃rau 800 degree |
|
Qhov ntom |
Tsis tau teev tseg |
7.93 g/m² |
|
Melting Point |
Tsis tau teev tseg |
1398-1420 degree |
|
Kev ua tau zoo |
Kev ua haujlwm nruab nrab ntawm kev ua haujlwm nyuaj, haum rau txias dov, stamping, vuam, tsis muaj preheating ua ntej vuam, tsis muaj kev kho cua sov tom qab vuam |
Superior txias txoj kev ua tau zoo, txo qis kev pheej hmoo hauv kev sib sib zog nqus nqus, tsis muaj kev kho cua sov tom qab vuam, haum rau kev ua haujlwm loj ntawm qhov nyuaj |
Corrosion Resistance
S904L Corrosion Resistance
Nws muaj peev xwm tiv taus cov kua qaub thiab alkaline tawm muaj zog- xws li sulfuric acid, phosphoric acid, thiab nitric acid. Tsis tas li ntawd, nws muaj qhov tshwj xeeb ua rau pitting corrosion, crevice corrosion, thiab kev nyuaj siab corrosion cracking. Nws yog qhov tshwj xeeb zoo - haum rau siab - chloride ib puag ncig (xws li dej hiav txwv thiab brine). Nyob rau hauv ib puag ncig sulfuric acid nrog cov concentrations tsawg dua los yog sib npaug li 98% thiab qhov kub thiab txias tsawg dua los yog sib npaug li 70 degree, nws qhov corrosion tsis tshua muaj qis, tshem tawm qhov xav tau kev tu lossis hloov tsis tu ncua thiab yog li txo qhov ntev - cov nqi ua haujlwm.
S304L Corrosion Resistance
Nws muaj peev xwm tuav tau me me corrosive media (xws li kais dej, atmospheric cua, thiab qaug zog acids los yog hauv paus). Nws ua haujlwm ruaj khov nyob rau hauv ambient kub, tsis tshua muaj siab, thiab nyob rau hauv ib puag ncig uas tsis muaj zog corrosive agents. Nws tsis tuaj yeem tiv taus cov xwm txheej hnyav- xws li kev raug dej hiav txwv ntev lossis cov kua qaub ntau ntxiv - thiab yog li yuav tsum tau saib xyuas lub sijhawm.
Weldability
Qhov qis- carbon xwm txheej ntawm 304L ua kom paub tseeb tias -txawm tias tsis muaj kev tshaj tawm -weld kev kho cua sov- nws khaws cov kev tiv thaiv zoo rau intergranular corrosion. Qhov no ua rau nws tsim nyog rau nyias - cov qauv phab ntsa thiab cov ntawv thov uas tom qab -weld kev kho cua sov tsis ua tau.
904L kuj tseem tuaj yeem txuas nrog siv phau ntawv arc vuam lossis inert gas shielded vuam txoj kev. Vim nws cov ntsiab lus alloy siab dua, kev siv cov khoom siv vuam nrog cov ntsiab lus molybdenum siab dua yog pom zoo. Feem ntau, tsis muaj kev tshaj tawm -weld kev kho cua sov yuav tsum tau.
Machineability
Ob leeg yog austenitic stainless hlau thiab sib koom ua ke rau kev ua haujlwm tawv. Txawm li cas los xij, vim nws cov ntsiab lus alloy siab dua thiab muaj zog dua, 904L nthuav tawm ntau cov cuab yeej adhesion (sticking) thaum lub sij hawm machining piv rau 304L, yog li imposing stricter yuav tsum ntawm tej cuab yeej thiab coolants.
Tham tam sim no kom tau txais Txoj Kev Xaiv Cov Khoom Siv Ua Haujlwm
Txawm hais tias koj xav tau 304L stainless hlau lossis 904L super stainless hlau, peb muaj ntau yam hauv - Tshuag loj thiab cov kev pabcuam kev cai.
Rov qab los ntawm pab pawg kws tshaj lij nrog xyoo dhau los ntawm kev lag luam, peb tuaj yeem muab cov ntaub ntawv pov thawj tseeb thiab cov kws tshaj lij cov ntaub ntawv xaiv cov lus pom zoo raws li koj qhov tshwj xeeb tshaj tawm, qhov kub thiab txias, thiab kev xav tau siab.
[Nyem qhov no kom tau txais cov lus tshaj tawm tshiab rau 904L / 304L]
