17-4PH (UNS S17400)
17-4PH Precipitation Hardening Stainless Steel
UNS S17400Introduction
17-4PH (UNS S17400) is a precipitation hardening martensitic stainless steel with Cu
and Nb/Cb additions. The grade combines high strength, hardness (up to 572°F / 300°C), and corrosion resistance.It provides an outstanding
combination of high strength, good corrosion resistance,good mechanical
properties at temperatures up to 600°F (316°C), good toughness in both
base metal and welds.The great benefit of this grade (and of other
precipitation hardening grades of stainless steel) is that they are
generally supplied in the solution treated condition, in which they are just machinable, and then can be age hardened to achieve high strengths.
Properties
17-4PH (UNS S17400) withstands corrosive attacks better than any of the standard hardenable stainless steels and is comparable to type 304 in most media.It has good resistance to a wide range of corrosive environments,and Like 304, 17-4PH (UNS S17400) is subject to pitting and crevice corrosion in warm chloride environments.It is also corrosion resistant in some chemical, petroleum, paper, dairy, and food processing industries.however,17-4PH is subject to crevice or pitting attack if exposed to stagnant seawater for any length of time.
Chemical Composition of 17-4PH (UNS S17400) （%）
Grade C Mn Si P S Cr Ni Cu
17-4PH min. -- -- -- -- -- 15.0 3.0 3.0
max. 0.07 1.00 1.00 0.04 0.03 17.5 5.0 5.0
Application
17-4PH (UNS S17400) should not be used at temperatures above 572°F (300°C) or at very low temperatures.however, it can be used on general applications where some level of corrosion resistance is needed in conjunction with high strength or hardness.
• offshore (foils, helicopter deck platforms, etc.)
• food industry,pulp and paper industry
• aerospace (turbine blades, etc.)
• mechanical components,nuclear waste casksPlease contact our company service (hotline:86 0510-83,632,628) to get more information on selection, application, heat treatment and inventory and other related information about 17-4PH (UNS S17400),you can also contact us for more information about precipitation hardening stainless steel and stainless steel.
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