... fittings,Flanges,U tube,Coiled pipe,Forgings,Steel Bar/Rod 17-4PH is a precipitation hardening martensitic stainless steel, which combines ... ) wich excellent corrosion resistance, and is suitable for easy fabrication.17-4PH Chemical Composition TYPICAL ANALYSIS C.Mn.P.S.Si ... -5.00%3.00-5.00%0.15-0.45%17-7PH Chemical Composition Chemical Composition(%)CCrNiMoFeAlMnSiPSOther≤0.0916.0-18 ...