Type 17-4 PH® - Download Data Sheet17-4 PH® (UNS S17400)

17-4 PH® is a martensitic precipitation hardening stainless steel offering high strength and hardness along with moderate corrosion resistance up to 600˚F.  It has good fabrication characteristics and can be age hardened using a single heat treatment in the 900-1150˚F temperature range.  This grade has been used for a variety of oil field and chemical process equipment, as well as fittings and fasteners.

Chemical Composition
Chemical Composition (wt%) limits as specified in ASTM A693 (Type 630)*

Element 17-4PH
Carbon 0.07
Chromium 15.0-17.5
Nickel 3.0-5.0
Copper 3.0-5.0
Manganese 1.00
Silicon 1.00
Phosphorus 0.040
Sulfur 0.030
Columbium + Tantalum 0.15-0.45
* Maximum, unless range is indicated

Mechanical Properties
Mechanical property requirements for solution treated product (Condition A) as specified in ASTM A693.

Property 17-4PH
Yield Strength, min. (ksi) -
Tensile Strength, min. (ksi) -
Elongation, min. (%) -
Hardness, max. (Rb) 38
17-4 PH® is a registered trademark of AK Steel Corporation

Physical Properties
Physical properties for 17-4 PH stainless steel

Property 17-4 PH
Density, lb/in3 0.280
Modulus of Elasticity, psi 28.5 x 106
Coefficient of Thermal Expansion, 68-212˚F, /˚F 6.0 x 10-6
Thermal Conductivity, Btu/ft hr ˚F 10.6
Specific Heat, Btu/lb ˚F 0.11
Electrical Resistivity, Microohm-in 38.6

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Data are typical, are provided for informational purposes, and should not be construed as maximum or minimum values for specification or for final design, or for a particular use or application. The data may be revised anytime without notice. We make no representation or warranty as to its accuracy and assume no duty to update. Actual data on any particular product or material may vary from those shown herein.