Nrog rau qhov kev thov ntau ntxiv rau cov hlau tsis muaj steel, kev noj cov nickel tau nce txhua xyoo, ua rau cov nqi nce ntxiv.
Thaum Ntiaj Teb Tsov Rog II, npib tsib xee tau nruj tswj hwm los ntawm qee lub tebchaws raws li cov khoom siv tswv yim, ua rau muaj kev tsis txaus. Yog li ntawd, Tebchaws Meskas, Lub Tebchaws Yelemees, thiab lwm lub tebchaws tau pib tshawb fawb txog stainless hlau siv manganese los hloov nickel. Los ntawm hauv- kev tshawb fawb tob, Tebchaws Meskas tau ua tiav qhov kev tsim ntawm manganese-nitrogen nickel- hloov hlau, txhim kho siab -manganese series ntawm austenitic stainless hlau, uas yog 200 series.
Raws li qhov xwm txheej nickel muab khoom hauv Tebchaws Meskas maj mam txhim kho, kev tsim cov hlau tsis muaj steel tsis muaj kev txwv los ntawm cov khoom siv tsis txaus, thiab yog li 200 series tsis pom kev txhim kho tseem ceeb ntxiv. Ntau tus neeg Isdias Asmesliskas uas tau koom nrog hauv kev tshawb fawb thiab kev txhim kho ntawm 200 series stainless hlau rov qab los rau Is Nrias teb thiab, xav txog Is Nrias teb cov manganese- nplua nuj tab sis npib tsib xee- tsis txaus lub teb chaws, coj rov qab 200 series stainless hlau ntau yam tsim nyob rau hauv Tebchaws Meskas rau kev tshawb fawb thiab kev siv ntxiv, ua tiav zoo. Txawm li cas los xij, vim yog txhob txwm tshaj tawm ntawm Mn hauv cov tshuaj muaj pes tsawg leeg, nws kuj muaj cov yam ntxwv ntawm kev nyuaj rau deform, muaj kev ua haujlwm tsis zoo, thiab muaj lub zog siab tab sis tsis txaus plasticity ntawm cov khoom siv kho tshuab. Yog li ntawd, nws yog ib qho tsim nyog los kho cov metallurgical thiab tshuaj muaj pes tsawg leeg los txhim kho nws cov khoom siv kho tshuab thiab tau txais kev sib xyaw zoo tshaj plaws ntawm lub zog thiab plasticity.