Kowiri tira 422, X20CrMoWV12-1, 1.4935, SUH 616, UNS 42200, ASTM A437 Ko te kowiri tira ātete ngoki martensitic karaehe B4B he huānga tāpiri mō te whakarewa taumaha e hoatu ana he kaha pai me te ātete ki te pāmahana teitei ake tae atu ki te 1200 F, Ko te maitai Chrome-nickel me te hanganga austenitic me ngā carbides. Ko ngā tāpiritanga whakarewa o te molybdenum, vanadium me te tungsten ka whakanui ake i tete pāmahana rewa. He rite ki te kowiri tira 410, ka taea e tēnei momo te whakamahana ki ngā taumata kaha rerekē. Nā te ātete ki te pāmahana, ka whakamahia pinepine tēnei koranu i roto i temākete whakaputa hiko hei wāhanga tāhūhū mamaoa me te hau, hei wāhanga wera nui rānei, ko ngā mata me ngā here tāhūhū te nuinga. He maitai rongonui a B50A125E e ātete ana ki te ngoki, ekua whakapakeketia, kua whakamaroketia hoki kia puta ai te pono nui i roto i ngā tono pāmahana teitei me te rohe pāmahana mahi tonu o runga o te 580℃., 422 Kowiri tira, UNS S42200, B50A, AISI 616,AMS 5655, ASTM A 565 GRD 616, MIL S 861, B50A125, B50A951A1, BS 970 442S19, EN61 Mai i Saky Steel.
Te Hanganga Matū o te 1.4935,SUH 616,UNS 42200Pae Kowiri tira:
| Ngā māka | C | Si | Mn | P | S | Cr | Mo | W | V | Cu | Ni |
| EN 1.4935, X20CrMoWV12-1 | 0.17-0.24 | 0.1-0.5 | 0.3-0.8 | <0.025 | <0.015 | 11.0-12.5 | 0.8-1.2 | 0.4-0.6 | 0.25-0.35 | 0.3-0.8 | |
| JIS SUH616 | 0.20-0.25 | <0.5 | 0.5-1.0 | <0.04 | <0.03 | 11.0-13.0 | 0.75-1.25 | 0.75-1.25 | 0.2-0.3 | <0.3 | 0.5-1.0 |
| ASTM AISI 422 / AISI 616 – S42200 | 0.20-0.25 | <0.75 | <1.0 | <0.04 | <0.03 | 11.0-12.5 | 0.75-1.25 | 0.75-1.25 | 0.15-0.30 | <0.5 | 0.5-1.0 |
Whakaaturanga Hua o te Pae Kowiri tira 1.4935, SUH 616, UNS 42200:
Wā tuku: 29 o Ākuhata-2022