ASTM B626

This specification covers welded tubes made from the nickel and nickel-cobalt alloys (UNS N10001, UNS N10242,UNS N10665, UNS N12160, UNS N10629, UNS N10624,UNS N10675, UNS N10276, UNS N06455, UNS N06007,UNS N06975, UNS N08320, UNS N06985, UNS N06002,UNS N06022, UNS N06030, UNS N06035, UNS N06058,UNS N06059, UNS N06200, UNS N06210, UNS N08031,UNS R30556, UNS N06230, UNS N06686, and UNS R20033)* listed in Table 1 intended for heat exchanger and condenser tubes and tubes for general corrosive service for heat-resisting applications.This specification covers tube 1⁄8 to 31⁄2 in. (3.2 to 88.9 mm) in outside diameter and 0.015 to 0.148 in. (0.41 to 3.7 mm) inclusive, in wall thickness. The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information only.

Grades

Alloy UNS Designation
Ni-Mo UNS N10001
UNS N10665
UNS N10675
UNS N10629
UNS N10624
Ni-Mo-Cr-Fe UNS N10242
Low C Ni-Cr-Mo UNS N10276
UNS N06022
UNS N06035
UNS N06455
Ni-Cr-Fe-Mo-Cu UNS N06007
UNS N06975
UNS N06985
UNS N06030
Ni-Fe-Cr-Mo UNS N08320
Ni-Cr-Mo-Fe UNS N06002
Ni-Fe-Cr-Co UNS R30556
Ni-Cr-W-Mo UNS N06230B
Low C-Ni-Cr-Mo UNS N06058
UNS N06059
Low C-Ni-Cr-Mo-Cu UNS N06200
low-carbon Ni-Fe-Cr-Mo-Cu UNS N08031
Low C-Ni-Cr-Mo-W UNS N06686
Ni-Co-Cr-Si UNS N12160
low Carbon Cr-Ni-Fe-N UNS R20033
Low-C Ni-Mo-Cr-Ta UNS N06210