Page 197 - CITS - Welder - Trade Theory
P. 197

WELDER - CITS



           Legend

           A      AWS A 5.1 classification E 70XX low hydrogen (E7018 preferred)
           B        AWS A 5.1 classification E 70XX low hydrogen (E7018 preferred)
           C        AWS A 5.5 classification E70XX - A1, low hydrogen
           D        AWS A 5.5 classification E70XX - B2L or E80XX B2, low hydrogen
           E        AWS A 5.5 classification E80XX-B3L or E80XX B6L, low hydrogen

           F        AWS A 5.5 classification E80XX-B6 or E80XX-B6L, low hydrogen
           G        AWS A 5.5 classification E80XX-B7 or E80XX-B7L, low hydrogen
           H        AWS A 5.5 classification E90XX-B8 or E80XX-B8L, low hydrogen
           1  Table 1 refers to coated electrodes (SMAW process) only. For bare wire welding (SAW, GMAW, GTAW and
              FCAW), use equivalent electrode classifications (AWS A 5.14, A 5.17, A5.18, A 5.20, A 5.23, At 28)
           2  Higher allow electrode specified in the table should normally be used to meet the required tensile and toughness
              after post weld heat treatment (PWHT). If no PWHT is required, the lower alloy electrode specified may be
              required to meet the hardness requirements.
                                              Table 2: Austenitic, super-austenitic and duplex stainless steel alloys

                                     Types of welding current and position of welding
            Base Material

                                304L SS  304H SS  316L SS  317L SS  904L SS  6% Mo SS  7% Mo SS  Alloy   20Cb-3  2304   Duplex SS  2205   Duplex SS



            Carbon and low     ABC     ABC    ABC     ABC     ABC     ABC     ABC      ABC     N       N
            alloy steel

            Type 304L          D       DE     DF      DG      DC      C       C        DCH     NL      NL
            stainless steel

            Type 304H                  E      EF      EG      *       *       *        ECH     *       *
            stainless steel
            Type 316L                         FG      FG      FC      FC      FC       FCH     NL      NL
            stainless steel
            Type 317L                                 GC      GC      GC      GC       GC      L       L
            stainless steel
            Type 904L                                         C       C       C        C       L       L
            stainless steel
            Type 6% Mo                                                CJK     CJK      *       *       *
            stainless steel

            Eg: 254 SMO, AL                                                   CJK      *       *       *
            6XN
            Type Alloy 20Cb-3                                                          H       *       *


            Type 2304 Duplex                                                                   LM      LM
            SS

            Type 2205 Duplex                                                                           LM
            SS







                                                           184

                                           CITS : C G & M - Welder - Lesson 61-76                                                                               CITS : C G & M - Welder - Lesson 61-76
   192   193   194   195   196   197   198   199   200   201   202