P9 (Cl. 1 & 3)

(UNS K90941) (9% CR • 1% MO)

AVAILABILITY:

Seamless Pipe: 1/2”-24” STD | sch40 | XS | sch80 | XXS | sch160 | ASTM / ASME A/SA-335-P9
Butt-Weld Fittings: 1/2”-24” STD | sch40 | XS | sch80 | XXS | sch160 | ASTM / ASME A/SA-234-WP9
Flanges: 1/2”-24” |  150# | 300# | 600# | 900# | 1500# | ASTM / ASME A/SA-182-F9
Pressure Fittings: 1/4”-4” 3000# | 6000# | ASTM / ASME A/SA-182-F9
Plate: 1/4”-2 1/2” Thick | ASTM / ASME A/SA-387
Bar: 1/2"-6" | ASTM / ASME A/SA-182-F9

DESCRIPTION:

Used primarily for Nace applications where sour environmentals under high temperature and pressure are expected. Chromium of 9% gives corrosion resistance similar to 400 series stainless steel, but provides higher tensile properties at hotter temperatures than 405 or 410 stainless. In addition, 9% chromium can be used for elevated temperatures and corrosion resistant process. Typical temperatures applications range from -20° to 1200° F.

CHEMICAL COMPOSITION, %