17-4 PH Stainless Steel (SS) is a precipitation hardening martensitic stainless steel. Typical usage is seen in applications requiring high strength and a modest level of corrosion resistance. Strength and toughness desired can be manipulated by temperate range in the heat treatment process. Best Stainless offers high quality standards including: UNS S17400, AMS 5643, ASTM A564, and ASTM A693 Grade 630.17-4 PH stainless steel can be used for a variety of industires including: pump shafts, oil path, mechanical seals, and within the aerospace industry. Its composition is carbon, chromium, columbian + tantalum, copper, manganese, nickel, phosphorous, silicon, and sulfur.
Below you will find typical applications of 17-4 PH stainless steel as well as the metals composition and mechanical properties. Learn more about or value added services that we offer to help you expedite the current job you have at hand.
Stainless Steel Bar Stock
Our stainless steel bar stock lengths range from the industry standard 12' to 28' long. For projects requring long length stainless steel bar, our inventory ranges from 20’-28’ R/L. Click here to view full list of stainless steel bar stock.
17-4 PH Stainless Steel Applications
- Pump Shafts
- Oil Patch
- Mechanical Seals
- Aerospace
17-4 PH Stainless Steel Composition
- Carbon 0.070 max
- Chromium 15.00 - 17.50
- Columbian + Tantalum 0.15 - 0.45
- Copper 3.00 - 5.00
- Manganese1.00 max
- Nickel 3.00 - 5.00
- Phosphorus 0.040 maxa
- Silicon 1.00 max
- Sulfur 0.030 max
Backed by Industry Standards
- UNS S17400
- AMS 5643
- ASTM A564
- ASTM A693 Grade 630
- NACE MR0175/MR0103 (H-1150D Condition)
