Oxy-LPG flame
Oxy-Hydrogen flame
Oxy-Coal gas flame
Oxy-Acetylene flame
Gas welding
Arc welding
Brazing
TIG welding
Hematite
Magnetite
Limonite
Carbon
2% to 4 %
0 % to 2 %
5 % to 8 %
8 % to 10 %
0.8 % carbon
0.5 % carbon
1.1 % carbon
1.5 % carbon