Buk ma mako jami ma ki lwongo ni Stainless Steel: niang rwom 304, 316, 317, 321, 347, 904L ki ma kato

nyonyo ma pe mako nyal nyutu nyonyo ma tek ki i yamo, lyeto, pii ki jami mukene ma goro ma goro, kacel ki jami ma ki keto i pii calo acid, alkali ki kadu. Ki lwongo bene ni gin ma ki lwongo ni corrosion-resistant acid steel. I tic kikome, nyonyo ma diyo jami ma goro ma goro ki lwongo ni nyonyo ma pe mako nyal, kun nongo nyonyo ma gengo buru pa jami ma ki lwongo ni chemical medium steel ki lwongo ni nyonyo ma gengo acid. Pien gin aryo ni gi pat i kit ma gi tye kwede, ma okwongo ni pi miite gengo buru pa jami ma ki lwongo ni chemical medium, ma nongo gin ma lacen pol kare tye ki kit ma pe balo.

Kit ma tek kwede me gengo nyal pa nyonyo ma pe mako nyal cung i kom jami ma ki lwongo ni alloying elements ma tye i steel ni.

Kit ma ki poko kwede:

Ka i lok, nyonyo ma pe mako nyal ki poko gi ki kit ma ki yubu kwede i dul adek: austenitic, ferritic ki martensitic stainless steels. I kom lok meno ki pi gin ma mite onyo yub mogo, tye jami mukene ma ki nongo calo duplex stainless steels, precipitation-hardening stainless steels ki high-alloy steels ma tye ki iron ma pe okato 50%.

1. Austenitic stainless steels
   Gin ma ki lwongo ni matrix gi tye ma calo austenite (face centred cubic structure, γ phase). Gin pe gi tye ki magnet i kit ma ki lyeto kwede ki pol kare ki jingo gi ki tic ki piny ma ngiic (ma twero kelo magnetism mogo). Dul pa US Steel Association tiyo ki namba 200 ki 300, ma calo 304.

2. Ferritic stainless steels
   Gin ma ki lwongo ni matrix gi tye ma calo ferrite (gin ma ki lwongo ni body-centred cubic structure, α phase). Gi tye ki magnet, ki pol kare pe gitwero doko tek ki lyeto ento ki twero jingo ne ki tic ki ngiico. Dul ma ki lwongo ni US Steel Association oketo gi i kin 400, ma calo 430 ki 446.

3. Martensitic stainless steels
   Gin ma ki lwongo ni matrix tye martensite (body-centred tetragonal onyo body-centred cubic ma lubu carbon ki cooling), gi tye magnetic, ki kit ma gi tiiyo kwede ki twero loko ne ki tic ki lyeto (quenching & tempering). Dul ma ki lwongo ni US Steel Association tiyo ki namba ma calo 410, 420, 440. Martensite dongo ka austenite (i lyeto ma malo) ngiic i rwom ma opore me rwom me lyeto me ot ki loko.

4. Austenitic-ferritic (Duplex) stainless steels
   Matrix gi tye ki dul ma ki lwongo ni austenite ki ferrite. Pol kare gin ma tye i dul matidi ni kato 15%. Gi tye ki magnet, ki twero jingo ki tic ma ngiic, ki ka kiporo ki austenitic stainless steels, duplex steels tye ki guvu ma malo, tek maber i kom buru ma tye i kin dul kom, tek maber i kom buru ma ki lwongo ni chloride stress ki pitting corrosion. Labol acel tye rwom me 329. (I kin jami mukene rwom me aryo pol kare bedo 2205, ki mukene.)

5. Gin ma ki lwongo ni Precipitation-hardening stainless steels
   Gin ma ki lwongo ni matrix gi tye austenite onyo martensite, ki gi twero bedo tek ki yat ma ki lwongo ni precipitation-hardening treatment. I US steel namba gi pol kare gi tye i 600 series, ma calo 630 (17-4PH).

I kom lok, ma pat ki jami ma ki lwongo ni alloying elements, austenitic stainless steels nyutu teko ma lamal me gengo balo. I kabedo ma goro ne nok ki in itwero tic ki nyonyo ma ki lwongo ni ferritic stainless steels; i kabedo ma goro manok, ka teko ma malo onyo tek ma malo mite ki dong martensitic nyonyo ma pe mako nyal onyo jami ma ki lwongo ni precipitation-hardening stainless steels ki twero tic kwede.