Bakin Karfe 422, X20CrMoWV12-1, 1.4935, SUH 616, UNS 42200, ASTM A437 Grade B4B martensitic creep resistant bakin karfe ƙarin nauyi karfe alloying abubuwa ba shi mai kyau ƙarfi da fushi juriya a mafi girma zafi har zuwa 1200 karfe Chrome tsarin austenitic tare da carbides.Abubuwan da aka haɗa na molybdenum, vanadium da tungsten suna ƙara haɓakanarkewa zafin jiki.Kama da bakin karfe 410 wannan matakin yana da ikon yin zafi zuwa matakan ƙarfi daban-daban.Saboda juriya na fushi ana yawan amfani da wannan gami a cikinKasuwar samar da wutar lantarki a matsayin kayan aikin tururi da iskar gas ko wasu abubuwan zafi daban-daban, galibi ruwan injin turbine da fasteners.B50A125E sanannen karfe ne mai juriya wandayana taurare kuma yana jin daɗi don ba da aminci mai mahimmanci a cikin aikace-aikacen zafin jiki na yau da kullun tare da ƙayyadaddun zazzabi na ci gaba da aiki na yau da kullun na 580 ℃., 422 Bakin, UNS S42200, B50A, AISI 616,AMS 5655, ASTM A 565 GRD 616, MIL S 861, B50A125, B50A951A1, BS 970 442S19, EN61 Daga Saky Karfe.
Haɗin Kemikal Na 1.4935, SUH 616,Farashin 42200Bakin Karfe Bar:
| Maki | 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 |
Nunin Samfura Na 1.4935, SUH 616, UNS 42200 Bakin Karfe:
Lokacin aikawa: Agusta-29-2022