Post Weld Heat Treat Temperature - Standard Rail
Post Weld Heat Treat Temperature - Standard Rail
(OP)
I am looking for the PWHT (Post Weld Heat Treat) temperature for tangent (straight) standard rail 300 HB (Brinell Hardness). The following is the chemical composition (weight percent):
Carbon 0.74 - 0.84
Maganese 0.80 - 1.1
Phosphorus 0.035
Sulfur 0.037
Silicon 0.01 - 0.060
Nickel 0.25 (max)
Chromium 0.25 - 0.50
Molybdenum 0.10 (max)
Vanadium 0.03 - 0.05
How do I find the PWHT for this rail?
Carbon 0.74 - 0.84
Maganese 0.80 - 1.1
Phosphorus 0.035
Sulfur 0.037
Silicon 0.01 - 0.060
Nickel 0.25 (max)
Chromium 0.25 - 0.50
Molybdenum 0.10 (max)
Vanadium 0.03 - 0.05
How do I find the PWHT for this rail?





RE: Post Weld Heat Treat Temperature - Standard Rail
Dik
RE: Post Weld Heat Treat Temperature - Standard Rail
RE: Post Weld Heat Treat Temperature - Standard Rail
Dik
RE: Post Weld Heat Treat Temperature - Standard Rail
RE: Post Weld Heat Treat Temperature - Standard Rail
thread725-257818: Welding Rail
By the way, PWHT would not be practical because it would effect the bulk mechanical properties (strength and surface hardness) of the rail and not feasible in the field. You need a welding process that provides local heat input in a rather short time period.
RE: Post Weld Heat Treat Temperature - Standard Rail
Dik