This specification covers two general classes, WP and CR, of wrought ferritic, ferritic/austenitic, and martensitic stainless steel fittings of seamless and welded construction covered by the latest revision of Specification A960/A960M. Fittings differing from these standards may be furnished in accordance with Supplementary Requirement S58 of Specification A960/A960M.
| Type | Grade | UNS Designation | |
|---|---|---|---|
| Ferritic Steels | WP27 | CR27 | S44627 |
| WP33 | CR33 | S44626 | |
| WP429 | CR429 | S42900 | |
| WP430 | CR430 | S43000 | |
| WP430Ti | CR430Ti | S43036 | |
| WP446 | CR446 | S44600 | |
| Ferritic/Austenitic Steels | WPS31803 | CRS31803 | S31803 |
| WPS32101 | CRS32101 | S32101 | |
| WPS32202 | CRS32202 | S32202 | |
| WPS32750 | CRS32750 | S32750 | |
| WPS32950 | CRS32950 | S32950 | |
| WPS32760 | CRS32760 | S32760 | |
| WPS39274 | CRS39274 | S32974 | |
| WPS32550 | CRS32550 | S32550 | |
| WPS32205 | CRS32205 | S32205 | |
| Martensitic Steels | WP410 | CR410 | S41000 |
| WPS41008 | CRS41008 | S41008 | |
| WPS41500 | CRS41500 | S41500 | |