... 4PH ( UNS S17400, Type 630 ) stainless steel ... 0.07, Si:≤1.0, Mn:≤1.0, P:≤0.04, S:≤0.03, Cr:15.0~17.0, Ni:3.0~5.0, Cu:3.0~5.0 Nb: 0.15~0 ... .459. Certificate:ISO, TUV, Mill Test Certificate17-4 Precipitation Hardening also known as Type ... 0~17.0 3.0~5.0 3.0~5.0 0.15~0.45Stocks : Products Show: Warehouse Show:ISO certificate Personal contact information 17-4PH ( UNS S17400, Type ...