Dab tsi yog qhov txawv ntawm 304 thiab 316 stainless hlau?

 

Qhov sib txawv tseem ceeb ntawm 304 thiab 316 stainless hlau uas ua rau lawv txawv yog qhov sib ntxiv ntawm molybdenum. Cov hlau no ua rau muaj kev tiv thaiv corrosion, tshwj xeeb tshaj yog rau cov dej ntsev ntau los yog cov tshuaj chloride-tshuaj lom. 316 stainless hlau muaj molybdenum, tab sis 304 tsis.

304 thiab 316 stainless hlau yog ob qho ntawm feem ntau thiab ntau yam ntawm stainless hlau. Thaum lawv sib koom ntau qhov sib xws,
muaj qhov sib txawv tseem ceeb hauv lawv cov muaj pes tsawg leeg, kev tiv thaiv corrosion, thiab kev siv.

1. Tshuaj muaj pes tsawg leeg:

• 304 Stainless hlau:
  • Chromium:18-20%
  • Nickel:8-10.5%
  • Manganese:≤ 2%
  • Cov pa roj carbon:≤ 0.08%
• 316 Stainless hlau:
  • Chromium:16-18%
  • Nickel:10-14%
  • Molybdenum:2-3%
  • Manganese:≤ 2%
  • Cov pa roj carbon:≤ 0.08%

Qhov txawv tseem ceeb:316 stainless hlau muaj 2-3% molybdenum, uas tsis muaj nyob rau hauv 304. Qhov sib ntxiv no txhim kho corrosion kuj, tshwj xeeb tshaj yog tawm tsam chlorides thiab lwm cov kuab tshuaj muaj.

2.Corrosion Resistance:

• 304 Stainless hlau:
  • Nws muaj kev tiv thaiv corrosion zoo nyob rau hauv feem ntau ib puag ncig, tshwj xeeb tshaj yog cov dej tsis muaj chlorinated.
• 316 Stainless hlau:
  • Superior corrosion kuj piv rau 304, tshwj xeeb tshaj yog nyob rau hauv ib puag ncig hnyav nrog rau cov dej ntsev, chlorides, thiab acids.

Qhov txawv tseem ceeb:316 stainless hlau yog ntau resistant rau corrosion, ua rau nws zoo tagnrho rau marine, tshuaj, thiab lwm yam hnyav ib puag ncig.

3. Mechanical Properties:

• 304 Stainless hlau:
  • Tensile zog: ~ 505 MPa (73 ksi)
  • Tawm Zog: ~ 215 MPa (31 ksi)
• 316 Stainless hlau:
  • Tensile zog: ~ 515 MPa (75 ksi)
  • Tawm Zog: ~ 290 MPa (42 ksi)

Qhov txawv tseem ceeb:316 muaj zog tensile thiab yield zog me ntsis, tab sis qhov txawv me me.

4. Daim ntawv thov:

• 304 Stainless hlau:
  • Feem ntau siv rau hauv cov khoom siv hauv chav ua noj, cov khoom siv hauv tsev, tsheb txiav, kev siv vaj tse, thiab cov thawv ntim khoom lag luam.
• 316 Stainless hlau:
  • Zoo dua rau cov cheeb tsam uas xav tau kev txhim kho corrosion, xws li cov khoom siv hauv hiav txwv, cov khoom siv tshuaj lom neeg, cov khoom siv tshuaj thiab kev kho mob, thiab cov chaw muaj ntsev ntau.

Qhov txawv tseem ceeb:316 yog siv nyob rau qhov yuav tsum tau muaj kev tiv thaiv corrosion, tshwj xeeb tshaj yog nyob rau hauv ib puag ncig hnyav.

5. Tus nqi:

• 304 Stainless hlau:
  • Feem ntau tsis tshua kim vim tsis muaj molybdenum.
• 316 Stainless hlau:
  • Ntau kim dua vim qhov sib ntxiv ntawm molybdenum, uas txhim kho corrosion kuj tab sis nce cov khoom siv.

Cov ntsiab lus:

• 304 Stainless hlauyog ib lub hom phiaj stainless hlau tag nrho nrog zoo corrosion kuj, feem ntau siv nyob rau hauv ib puag ncig uas muaj kev pheej hmoo ntawm corrosion yog tsawg.
• 316 Stainless hlaumuaj kev tiv thaiv corrosion zoo dua, tshwj xeeb tshaj yog tiv thaiv chlorides thiab lwm yam tshuaj corrosive, ua rau nws zoo tagnrho rau qhov xav tau ntau dua.

Kev xaiv ntawm ob feem ntau yog nyob ntawm qhov tshwj xeeb ib puag ncig thiab cov qib yuav tsum tau muaj kev tiv thaiv corrosion.