Applications of stainless steel 631:

Stainless Steel 17-7PH is used extensively in a variety of applications and industries including aerospace, petroleum, chemical and petrochemical industries, energy, food and cryogenics.Specific uses include engine thrust reverser components, stainless elastic elements, containers, conduits, springs, diaphragms, ship shafts, compressor disks, and more.

Normal product forms:

• Sheets and bars.
• Round, square, hex (A/F), rectangle, billet, ingot, forged, etc.
• Forged hollow bar, forged ring, forging blocks, forging shaft, forging discs & circles.

Specifications/Standard: AMS 5528, AMS 5529, AMS 5568, AMS 5644, AMS 5678, ASTM A313, ASTM A564, ASTM A579, ASTM A693, ASTM A705, MIL-S-25043.

• Chromium (Cr): 16.00-18.00
• Nickel (Ni): 6.50-7.75
• Iron (Fe): balance
• Aluminum (Al): 0.75-1.50
• Carbon (C): 0.09 max
• Manganese (Mn): 1.00 max
• Silicon (Si): 1.00 max
• Phosphorus (P): 0.040 max
• Sulfur (S): 0.030 max

Physical Constants and Thermal Properties

Mechanical Property:

• Ultimate Tensile Strength (UTS): 150 KSI max (1035 MPa max) in the annealed condition
• Yield Strength (0.2% offset): 65 KSI max (450 MPa max) in the annealed condition
• Elongation: Consult Ulbrich Technical Services for the annealed condition
• Hardness: Rb 92 max in the annealed condition