Heat Treat Inquiry - 4130 Material - Sour Service - Yield @ 400°F >68,500? API6A
Heat Treat Inquiry - 4130 Material - Sour Service - Yield @ 400°F >68,500? API6A
(OP)
Hi,
Forged part(s) ~220 lbs. each
Material Grade - 4130
Sour service
Yield needs to be >68,500 with testing done at 400°F
At room temperature we hit ~75,000 yield for this.
According to API 6A Appendix G, for 4130 you need to de-rate the material 88% for a testing temperature 400°F, which would put us under the 68,500 (66,000)
Looking for heat treat recommendations and/or other insights
Thank you in advance!
Forged part(s) ~220 lbs. each
Material Grade - 4130
Sour service
Yield needs to be >68,500 with testing done at 400°F
At room temperature we hit ~75,000 yield for this.
According to API 6A Appendix G, for 4130 you need to de-rate the material 88% for a testing temperature 400°F, which would put us under the 68,500 (66,000)
Looking for heat treat recommendations and/or other insights
Thank you in advance!





RE: Heat Treat Inquiry - 4130 Material - Sour Service - Yield @ 400°F >68,500? API6A
RE: Heat Treat Inquiry - 4130 Material - Sour Service - Yield @ 400°F >68,500? API6A
Temper – 1215°f - 6 hours
Hardness – 235 Bhn
Results:
Tensile – 400°F - 88,000 psi
Yield – Request 70,000 400°F - 63,000 psi
Elongation – 400°F - 23%
Reduction of area – 400°F - 55%
I need to get the yield up to >68,500 - any suggestions how?
Thank you
RE: Heat Treat Inquiry - 4130 Material - Sour Service - Yield @ 400°F >68,500? API6A
What material form are you using (bar, sheet, tube)? Timken has a material called Impact7 which should be available from warehouses in bar form. This may be up to the task.
RE: Heat Treat Inquiry - 4130 Material - Sour Service - Yield @ 400°F >68,500? API6A
Do you think 4140 with similar heat treat as above; Water Quench – 1600°f - 5 hours, Temper – 1215°f - 6 hours, Hardness – 235 Bhn, will work?
RE: Heat Treat Inquiry - 4130 Material - Sour Service - Yield @ 400°F >68,500? API6A
RE: Heat Treat Inquiry - 4130 Material - Sour Service - Yield @ 400°F >68,500? API6A
https://pgjonline.com/2010/02/12/material-selectio...
edit : why not oil quench instead of water quench ? less distortion , may be some of the experts can chime in
RE: Heat Treat Inquiry - 4130 Material - Sour Service - Yield @ 400°F >68,500? API6A
Everyone I have spoken to in real life (not online) has said the quenchent would not make a specific difference in my situation.
mfgenggear - thank you for the link