1. What is ASTM A671 CJF115 Class 11?
low-temperature service (-115℃F/-81.7℃)
Class 11: 11,000 psi (76 MPa)
:
"CJF115"=Charpy V-notch testing at -115℃F (min. 17 ft-lb/23 J)
Single-normalized heat treatment
2. Where is it typically used?
:
:
Low-to-medium pressure gas distribution
3. Material properties?
:
Tensile: >=65 ksi (448 MPa)
Yield: >=40 ksi (276 MPa)
:
-115℃F
Min. elongation: 22%
:
Carbon: <=0.28%
S/P <=0.030%
4. Manufacturing process?
:
Standard EFW with post-weld normalization
:
11,000 psi (76 MPa)
NDE: RT or UT (100% coverage)
:
5. Fabrication requirements?
:
Preheat: 250–450℃F (121–232℃)
:
Cold bending (min. 7D radius)
:
