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ELGILOY SPECIALTY METALS

Wire -17-7 PH Stainless Steel

Wire -17-7 PH Stainless Steel

17-7 PH Stainless Steel

UNS S17700
W. Nr 1.4568


Applications

Springs, Rings, Washers, Heat Exchangers, Tubing

Description

17-7 PH is a precipitation-hardening stainless steel that provides high strength and hardness, excellent fatigue properties, good corrosion resistance, good formability, and minimum distortion upon heat treatment. The alloy provides valuable property combinations particularly well suited for aerospace applications. This special alloy also provides benefits for other applications requiring high strength and good corrosion resistance, as well as excellent properties for springs at temperatures up to 600°F (316°C).

Industries Supplied

Chemical Processing, Aerospace, Automotive

Nominal Composition

Cr: 16.0 – 18.0
Fe: Bal min
Mn: 1.0 max
Ni: 6.5 – 7.8
Si: 1.0 max
C: 0.09 max
S: 0.030 max
P: 0.040 max
Al: 0.75 – 1.5

Physical Properties

Density: 0.282 lb/in3 (7.81 g/cm3 )
0.277 lb/in3 (7.67 g/cm3 )

Modulus of Elasticity (E):
At 70°F (20°C): 31.1 x 103 ksi (214 GPa)

Modulus of Rigidity (G):
At 70°F (20°C): 11.7 x 103 ksi (81.0 GPa)

Coefficient of Expansion:
7.9 µin/in.-°F (70°F to 600°F)
14.2 µm/m-°C (20°C to 300°C)

Electrical Resistivity: 40.6 µΩ.in, (130 µΩ.cm)

Thermal Conductivity: 103 Btu-in/ft2hr-°F, (14.9 W/m-K)

Applicable Specifications

Wire & Bar: AMS 5665, AMS 5687, ASTM B166.

Typical Mechanical Properties – Spring Applications

  • Annealed
    • Heat Treatment: 1925°F (1050°C)
    • Tensile Strength: 80 – 110 ksi; (552-758 MPa)
    • Suggested Operating Conditions: -300°F to 700°F (-184°C to 370°C)
  • Spring Temper
    • Tensile Strength: 160 – 200 ksi; (1103 – 1379 MPa)
    • Suggested Operating Conditions: -300°F to 700°F (-184°C to 370°C​)

INCONEL® is a registered trademark of the Special Metals Corporation group of companies.

For further information Contact:

Email: wireinfo@elgiloy.com
Phone: 1 847 695 1900
Elgiloy Specialty Metals – Wire Products
356 N.Cross Street
Sycamore, IL 60178 USA