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What are the recommended filler rod, flame, and flux selections for oxy-acetylene welding of various iron, carbon steel, and cast steel types?
Physics
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Answer
This table, "Table 1. Filler rod, flame and flux selection," provides guidelines for selecting the appropriate flame, filler rod, and flux for various metals during oxy-acetylene fusion welding.
Here is a summary of the recommendations:
-
IRON
- Wrought iron:
- Flame: neutral
- Filler rod: COMWELD mild steel
- Flux: none
- Low carbon iron:
- Flame: neutral
- Filler rod: COMWELD mild steel
- Flux: none
- Galvanised iron:
- Flame: slightly oxidising
- Filler rod: COMWELD COMBOND 411
- Flux: COMWELD copper & brass
- Wrought iron:
-
CARBON STEELS
- Mild steel (up to 0.30%C):
- Flame: neutral
- Filler rod: COMWELD mild steel
- Flux: none
- Medium carbon (0.30% - 0.50%C):
- Flame: slightly carburising
- Filler rod: COMWELD super steel
- Flux: none
- High carbon (0.50% - 0.90C):
- Flame: slightly oxidising
- Filler rod: COMWELD nickel bronze
- Flux: COMWELD copper & brass
- Tool steel (0.80% - 1.50%C):
- Flame: slightly oxidising
- Filler rod: COMWELD nickel bronze
- Flux: COMWELD copper & brass
- Mild steel (up to 0.30%C):
-
CAST STEELS
- Plain carbon (up to 0.25%C):
- Flame: neutral
- Filler rod: COMWELD high test
- Flux: none
- Low alloy:
- Flame: neutral
- Filler rod: COMWELD high test
- Flux: none
- Plain carbon (up to 0.25%C):
-
CAST IRONS
- Grey cast iron:
- Flame: neutral
- Filler rod: COMWELD cast iron
- Flux: COMWELD cast iron
- Malleable iron:
- Flame: slightly oxidising
- Filler rod: COMWELD COMBOND 411
- Flux: COMWELD bronze
- Grey cast iron:
-
LOW ALLOY HIGH TENSILE STEELS
- Molybdenum or Manganese:
- Flame: neutral
- Filler rod: COMWELD super steel
- Flux: none
- Molybdenum or Manganese:
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