Chromium-Molybdenum Alloy Steel or Chrome-Moly, CrMo is an alloy steel intended for high temperature and high pressure services.  Chrome-Moly is used in the power generation industry and the petro-chemical industry because of its tensile strength, corrosion resistance and high-temperature strength.  Chrome-Moly has a better strength to Weight ratio than steel, which enables designers to use thinner wall pipe or smaller diameter tubing to reduce overall weight.

Chromium-Molybdenum Alloy Steel has strong resistance to rupturing at high temperatures and high pressures.  Chrome-Moly is also resistant to cracking from hydrogen attack and hot sulfide corrosion cracking.

Chrome-Moly grades P-11, P-22, P-91 and P-92 are used in the power industry.  Chrome-Moly grades P-5 and P-9 are used in petro-chemical refinery processes. Chrome-Moly Forged Fittings & Flanges are available in grades F-5, F-9, F-11, F-22, F-91, F92.  Chrome-Moly Alloy Butt Weld Fittings are available in grades WP-5, WP-9, WP-11, WP-22, SP-91, WP-92.   F11 and F22 meet NACE-MRO 175.

Specifications – Chrome-Moly

ASTM	A182, A335, A-387, A-234,
ASME	SA182, SA335, SA-387, SA234