Handbook-Appendices

2 Appendix A Temperature Data Color Scale Color Scale Degrees A B Celsius Melting Points 1600 Pure Iron Low-Carbon Steel 1500 White 1400 18-8 Stainless Steel White Yellow White 1300 Orange Yellow 1200 Cast Iron Light Yellow Orange Red 1100 Lemon Bright Cherry Red 1000 Brasses and Bronzes Orange Cherry Red 900 Bright Red Dull Cherry Red 800 Cherry Red Dark Red 700 Dark Cherry 600 Aluminum Alloys Blood Red Faint Red 500 400 300 Lead 200 Lead Alloys

NOTE: Color scale A is an approximation of what the naked eye will see in dim light. Color scale B is close to what a welder will

see through his goggles. Neither should be considered precise.