Chromium molybdenum steel is created by utilizing chromium and molybdenum elements. The molybdenum element enhances strength and higher working temperatures while the chromium provides outstanding resistance to corrosion and oxidation. Featureswear resistancecorrosion resistanceimpact resistancegradesastm a387 grade 9 class 2, Grade 91 class 2, Grade 12 class 2, Grade 5 class 2, Grade 22 class 2, Grade 11 class 2. Asme sa387 grade 9 class 2, Grade 91 class 2, Grade 12 class 2, Grade 5 class 2, Grade 22 class 2, Grade 11 class 2. En 10028 16mo3, 13crmo45, 10crmo010bs 1501 620b, 621b, 622bapplicationsboilerspressure vesselsheat exchangersflangesvalvesductingpipe supportsils and fluids / pressure vessel constructionsSA 387 Grade 5 cl1 and sa 387 gr 5 cl2sa 387 gr 9 cl1 and sa 387 gr 9 cl2sa 387 gr 11 cl1 and sa 387 gr 11 cl2sa 387 gr 12 cl1 and sa 387 gr 12 cl2sa 387 gr 22 cl1 and sa 387 gr 22 cl2sa 387 gr 91 cl1 and sa 387 gr 91 cl2you'll find it to be a chromium molybdenum alloyed steel plate mainly used for elevated temperature applicationssa 203 gr asa 203 gr bsa 203 gr csa 203 gr dsa 203 gr esa 203 gr fnickel based plates made from alloy steel especially used for applications requiring reduced temperatures below, 150 deg f. Primarily employed in cryogenic construction of space shipssa 204 gr asa 204 gr bsa 204 gr cmedium to semi high main alloying, Temperature applications element being molybdenum