Stainless Steel 17-4 PH

17-4 PH is a precipitation-hardened martensitic stainless steel that combines high strength, good corrosion resistance, and excellent mechanical properties. It can be heat-treated to various strength levels and is widely used in aerospace and defense.

Machinability

50/100

Tolerance

±0.01 mm

Category

Stainless Steel

Material Properties

PropertyValue
Tensile Strength1,070 MPa (155 ksi)
Yield Strength1,000 MPa (145 ksi)
Hardness36 HRC
Density7.78 g/cm³
Machinability Rating50/100
Thermal Conductivity18.3 W/m·K
Melting Point1,400–1,440 °C
Tolerance±0.01 mm

Common Grades

17-4 PH H90017-4 PH H102517-4 PH H1150

Advantages

  • Very high strength
  • Good corrosion resistance
  • Heat-treatable
  • Good fatigue properties

Limitations

  • Difficult to machine in hardened condition
  • Expensive
  • Requires careful heat treatment

Common Applications

Turbine blades

Valve stems

Aerospace fasteners

Nuclear components

Pump shafts

Industries Served

AerospaceDefenseEnergyOil & GasNuclear

Available Surface Finishes

PassivationElectropolishBead Blast

Need Stainless Steel 17-4 PH CNC Parts?

Upload your CAD file and receive a detailed quote within 24 hours. No minimum order quantity.

Get a Free Quote