UCS-79(d)(5) request
UCS-79(d)(5) request
(OP)
All expert,
UCS-79(d)(5) specified rule "The temperature of the material during forming is
in the range of 250°F to 900°F (120°C to 480°C)."
Why the rule shecified a temperature range, not a limit temperature ?
If the head form is formed belowing 119°C, could I exempt the heat treatment based on this rule ?
UCS-79(d)(5) specified rule "The temperature of the material during forming is
in the range of 250°F to 900°F (120°C to 480°C)."
Why the rule shecified a temperature range, not a limit temperature ?
If the head form is formed belowing 119°C, could I exempt the heat treatment based on this rule ?





RE: UCS-79(d)(5) request
RE: UCS-79(d)(5) request
This is only one of 5 requirements which you must comply if you have P-No 1 material with only
5 % extreme fiber elongation. Go back and re-read this section
.....For P-No. 1, Group Nos. 1 and 2, this
subsequent heat treatment is required when the extreme
fiber elongation exceeds 40%, or if the extreme fiber elongation
exceeds 5% and any of the following conditions
exist
So, if you have 5% extreme fiber elongation AND any of the (1)-(5) requirements are met, you must heat treat after forming. If you met none of the 5 requirements, the extreme fiber cannot exceed 40% for P-No 1, Groups 1 and 2 base materials.