Dab tsi yog qhov txawv ntawm smo 254 thiab ss316?
Dec 31, 2025
Tso lus
Ob leeg SMO 254 thiab SS316 yog siab -kev ua tau zoo stainless hlau siv dav hauv kev lag luam uas xav tau tshwj xeeb corrosion kuj thiab lub zog. Hais txog cov tshuaj muaj pes tsawg leeg, SMO 254 muaj cov feem ntau ntawm molybdenum thiab npib tsib xee, muab nws zoo tshaj rau pitting corrosion, crevice corrosion, thiab kev nyuaj siab corrosion cracking. Thaum SS316 tseem yog ib qho ntawm cov feem ntau siv austenitic stainless hlau, nws tsis kam mus rau qhov chaw huab cua tsis zoo li ntawm SMO 254.
254 smo khoom yog dab tsi?
254 SMO stainless hlau yog sib npaug rau EN 1.4547, ASTM A312 UNS S31254 (tubing), nrog forging qib ASTM A182 F44 thiab casting qib ASTM A351 CK3MCuN, los yog 6Mo alloy. Nws yog qib siab - alloy austenitic stainless hlau tshwj xeeb tsim rau dej hiav txwv thiab lwm yam chloride corrosive- muaj cov xov xwm. Nws nthuav tawm cov kev tiv thaiv zoo heev rau pitting thiab crevice corrosion, nrog tus nqi PRE ntau dua lossis sib npaug rau 42.5 *.
SS316 stainless hlau yog dab tsi?
316 stainless hlau yog austenitic alloy, qhov thib ob feem ntau tom qab 304, txawv los ntawm kev ntxiv 2-3% molybdenum, uas ua rau nws muaj zog tiv thaiv cov chlorides, dej ntsev, thiab cov tshuaj muaj zog hnyav, ua rau nws zoo tagnrho rau marine, kho mob, ua zaub mov, thiab cov khoom siv tshuaj lom neeg uas feem ntau hu ua "kev tiv thaiv corrosion-marine".
Dab tsi yog qhov txawv ntawm SMO 254 thiab SS316?
Piv rau 316 stainless hlau, SMO 254 muaj kev tiv thaiv corrosion zoo dua, lub zog, thiab kub tsis kam, tab sis nws yog qhov nyuaj rau kev ua haujlwm thiab xav tau cov ntaub ntawv tshwj xeeb rau vuam.
SMO 254 vs SS316 stainless hlau: Chemical Composition
| Element | SMO 254 Stainless hlau | SS316 Stainless hlau |
|---|---|---|
| Chromium (Cr) | 20.0 - 22.0% | 16.0 - 18.0% |
| Nickel (Ni) | 18.0 - 20.0% | 10.0 - 14.0% |
| Molybdenum (hli) | 6.0 - 6.5% | 2.0 - 3.0% |
| Cov pa roj carbon (C) | Tsawg dua lossis sib npaug li 0.020% | Tsawg dua lossis sib npaug li 0.08% |
| Manganese (Mn) | Tsawg dua lossis sib npaug li 2.0% | Tsawg dua lossis sib npaug li 2.0% |
| 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 0.020% | Tsawg dua lossis sib npaug li 0.030% |
| Hlau (Fe) | Tshuav | Tshuav |
SMO 254 vs SS316 stainless hlau: Mechanical Properties
| Khoom | SMO 254 Stainless hlau | SS316 Stainless hlau |
|---|---|---|
| Tensile zog | 650 - 950 MPa | 500 - 700 MPa |
| Yield zog | 300 - 450 MPa | 205 - 290 MPa |
| Elongation | Ntau dua lossis sib npaug li 35% | Ntau dua lossis sib npaug li 40% |
| Hardness | Tsawg dua lossis sib npaug li 220 HB | Tsawg dua lossis sib npaug li 170 HB |
| Pitting Resistance Equivalent Number (PREN) | 42 - 46 | 25 - 30 |
SMO 254 vs SS316 Stainless Hlau: Corrosion Resistance
SMO 254 (UNS S31254, 6% molybdenum super austenitic stainless hlau) muaj kwv yees li 24% chromium, 6% molybdenum, thiab 0.20% nitrogen, nrog rau PREN tus nqi kwv yees li 42-45. Yog li ntawd, nws tsis kam mus rau pitting corrosion, crevice corrosion, thiab chloride kev nyuaj siab corrosion cracking yog deb tshaj rau SS316 (UNS S31600, kwv yees li 17% chromium, 2-3% molybdenum, PREN tus nqi kwv yees li 23-26), tshwj xeeb tshaj yog nyob rau hauv acidic, chloride-nplua nuj, thiab high-temperature seawater acids.
SMO 254 vs SS316 Stainless hlau: Machinability
Vim nws cov ntsiab lus siab dua thiab kev ua haujlwm nyuaj, SMO 254 muaj qhov ua haujlwm qis dua li SS316, yuav tsum tau txo qis ntawm kev txiav ceev ntawm kwv yees li 30-40%, kev siv cov cuab yeej muaj zog, thiab kev hloov pauv ntau zaus; thaum SS316 tuaj yeem ua tshuab siv tus qauv austenitic stainless hlau machining txoj kev, ua tiav cov khoom tsim tau ntau dua hauv kev xa, drilling, thiab kev ua haujlwm milling.
Qhov txawv ntawm SMO 254 thiab 6MO yog dab tsi?
SMO 254 muaj lub zog tawm los ntawm 300 MPa thiab lub zog tensile ntawm 650 MPa . 6MO, ntawm qhov tod tes, muaj lub zog tawm los ntawm 300 MPa thiab lub zog tensile ntawm 650 MPa. Ob lub alloys pom zoo heev toughness thiab tuaj yeem tiv taus qhov kub thiab txias
leej twg xaiv peb?
Yog tias koj muaj qhov yuav tsum tau ua rau SMO 254 thiab 6MO stainless hlau, peb txais tos koj xaj. GNEE muaj cov khoom muag loj ntawm cov khoom nrov rau koj xaiv. Cov ntaub ntawv no tuaj yeem ua tiav rau hauv ntau yam khoom siv, nrog rau cov phaj, coils, raj, tuav, thiab xaim. Rau cov ncauj lus kom ntxaws txog tshuaj muaj pes tsawg leeg thiab kuaj dawb, thov hu rau peb lub Hoobkas tam sim ntawd. Peb muab cov nqi sib tw thiab kev pabcuam zoo heev.
Xa kev nug