17-7PH (631) precitipation harding stainless steel bar, strip, wire, seamless pipe

17-7PH (631)  precitipation harding stainless steel bar, strip, wire, seamless pipe                                                                                                                                                             

• Introduction of 17-7PH (631)  precitipation harding stainless steel 
  • 17-7PH is a semi-austenitic  precipitation-hardening stainless steel that provides high strength and  hardness, excellent fatigue properties, good corrosion resistance and minimum  distortion upon heat treatment. It is easily formed in the annealed  condition, and then hardened to high strength levels by simple heat  treatments to Conditions RH 950 and TH 1050. The exceptionally high strength  of Condition CH 900 offers many advantages where limited ductility and  workability are permissible.
  • In its heat-treated condition, this  alloy provides exceptional mechanical properties at temperatures up to 900 °F  (482 °C). Its corrosion resistance in both Conditions TH 1050 and RH 950 is  superior to that of the hardenable chromium types. In some environments,  corrosion resistance approximates that of the austenitic chromiumnickel  stainless steels. In Condition CH 900, its general corrosion resistance is  comparable to that of Type 304 stainless steels. Fabricating practices  recommended for other chromium-nickel stainless steels can be used for this  material.
• Characters
  • l    High strength
  • l    Moderately resistant to corrosion
  • l    Good elasticity,
  • l    Good resistance to relaxation and fatigue resistance
• Applications of 17-7PH (631)  precitipation harding stainless steel 
  • l    Springs
  • l    Washers
  • l    Blades
  • l    Fluid seal springs
  • l    Diaphragms
  • l    Pressings
  • l    Flexures
  • l    Encapsulated bellows
• Equal grades
  • 631, SUS631, UNS S17700
• Chemical composition  (%)
  • Carbon 0.09 max.
  • Manganese 1.00 max.
  • Phosphorus 0.040 max.
  • Sulfur 0.030 max.
  • Silicon 1.00 max.
  • Chromium 16.00 – 18.00
  • Nickel 6.50 – 7.75
  • Aluminum 0.75 – 1.50
• Standards
  • ASTM A693 Standard Specification for  Precipitation-Hardening Stainless and Heat-Resisting Steel Plate, Sheet, and  Strip
  • ASTM A564 Standard Specification for Hot-Rolled and Cold-Finished  Age-Hardening Stainless Steel Bars and Shapes
  • AMS 5528 Sheet, Strip and Plate
  • AMS 5529 Sheet and Strip – Cold Rolled
  • ASTM A 693 Plate, Sheet and Strip
• Forms available  at A-one Alloy
  • Bar, strip, wire, seamless pipe,  forging
• Delivery of 17-7PH (631)  precitipation harding stainless steel 
  • Plenty of bars in stock. Strip could  be delivered within 2 weeks. For other products please contact A-one Alloy  for confirmation.

* 17-4 PH, 17-7 PH and PH 15-7 Mo areregistered trademarks of AK Steel Corporation