--18th.January.2024--
316 Stainless hlau ntawv nrog thickness 1.5 x 1500 x 3000mm, tag nrho 23.65Tons yog tag nrho cov ntim los ntawm export tsim nyog ntoo pallet.
Hnub no alleady loaded nyob rau hauv ib tug tag nrho 20ft thawv.Thiab yuav hloov mus rau Shanghai Hiav txwv chaw nres nkoj mus thauj khoom ntawm Nkoj.
Alloy 316 (UNS S31600) yog molybdenum-based austenitic stainless hlau. Piv nrog cov pa chromium-nickel austenite xws li 304 alloy, stainless hlau no muaj kev tiv thaiv zoo dua rau kev xeb, pitting corrosion, thiab crevice corrosion. Cov alloys muaj ntau dua ductility, kev nyuaj siab corrosion kuj, compressive zog thiab kub tsis kam. Ntxiv rau qhov zoo tshaj plaws corrosion kuj thiab lub zog, 316 alloy thiab 316L tooj liab-nickel-molybdenum alloy kuj muaj cov yam ntxwv ntawm austenitic stainless hlau, uas yog zoo sib dhos thiab formability.
Hauv cov ntawv thov uas xav tau kev tiv thaiv zoo dua rau kev xeb thiab pitting corrosion, 317L yog nrov dua 316 lossis 316L vim 317L muaj 3-4% molybdenum, thaum 316 thiab 316L tsuas muaj 2-3% molybdenum.
316 alloy thiab 316L thiab 317L tooj liab-nickel-molybdenum alloys kuj muaj cov yam ntxwv ntawm austenitic stainless hlau: zoo processability thiab formability.
316 Stainless Steel Chemical composition ASTM A240, ASME SA -240 yog qhia nyob rau hauv cov lus hauv qab no:
| Stainless hlau 316 | Stainless hlau 316L | Stainless hlau 317L | |
| C | 0.08 | 0.030 | 0.030 |
| Mn | 2.00 | 2.00 | 2.00 |
| Si | 0.75 | 0.75 | 0.75 |
| Cr | 16.00 18.00 |
16.00 18.00 |
18.00 20.00 |
| Ni | 10.00 14.00 |
10.00 14.00 |
11.00 15.00 |
| Mo | 2.00 3.00 |
2.00 3.00 |
3.00 4.00 |
| P | 0.045 | 0.045 | 0.045 |
| S | 0.030 | 0.030 | 0.030 |
| N | 0.10 | 0.10 | 0.10 |
| Fe | Tshuav | Tshuav | Tshuav |
Preservative
General corrosion
Piv nrog rau 18-8 stainless hlau, 316, 316L thiab 317L muaj corrosion kuj zoo dua nyob rau hauv atmospheric ib puag ncig thiab lwm qhov chaw me me. Feem ntau hais lus, xov xwm uas tsis corrode 18-8 stainless hlau yuav tsis corrode molybdenum-muaj qib. Qhov tsuas yog qhov tshwj xeeb yog oxidizing acids xws li nitric acid, uas stainless hlau uas muaj molybdenum tsis tshua muaj resistant.
Hauv cov tshuaj sulfuric acid, 316 thiab 317L muaj kev tiv thaiv corrosion zoo dua li lwm cov qib chromium-nickel. Ob qib muaj kev tiv thaiv corrosion zoo rau cov kev daws teeb meem siab ntawm qhov kub txog li 120 degree F (38 degree). Tau kawg, kev kuaj hauv kev pabcuam yog qhov tseem ceeb vim tias kev ua haujlwm thiab cov kab mob acidic tuaj yeem ua rau muaj kev cuam tshuam loj heev. Ob qib muab kev tiv thaiv corrosion zoo dua li lwm hom stainless hlau thaum cov roj sulfur muaj cov concentrated. Txawm li cas los xij, nyob rau hauv cov ntaub ntawv no, acid concentration muaj qhov cuam tshuam loj heev ntawm corrosion tus nqi thiab qhov no yuav tsum tau ua tib zoo xav.
Molybdenum-muaj stainless hlau 316 thiab 317L muaj qee yam kev tiv thaiv corrosion rau ntau lwm qhov chaw. Cov ntaub ntawv corrosion nram qab no qhia tau hais tias cov alloys pom zoo corrosion kuj nyob rau hauv boiling 20% phosphoric acid daws. Lawv kuj tau siv dav hauv kev kho mob kub organic acids thiab fatty acids. Hauv kev tsim thiab tuav cov khoom noj thiab tshuaj, molybdenum-muaj stainless hlau feem ntau yog siv los txo cov hlau tsis huv.
Feem ntau hais lus, nyob rau hauv ib puag ncig ib puag ncig, kev ua haujlwm ntawm 316 thiab 316L tuaj yeem suav tias yog sib npaug ntawm 317L. Txawm li cas los xij, kev zam yog tsim nyob rau hauv ib puag ncig uas tuaj yeem ua rau intergranular corrosion nyob rau hauv vuam thiab kub-cuam tshuam cheeb tsam. Hauv cov xov xwm zoo li no, 316L thiab 317L feem ntau siv vim lawv cov ntsiab lus tsis tshua muaj carbon, uas tuaj yeem txhim kho kev tiv thaiv intergranular corrosion.
