17-4 PH Stainless Steel Bar


Our 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. to view full list of stainless steel bar stock.


17-4 PH Stainless Steel Properties

Condition Ultimate Tensile
Strength (PSI)
0.2% Yield
Strength (PSI)
Elongation
(% in 2in.)
Reduction Of 
Area (%)
Hardness 
Brinell
Hardness
Rockwell
H900 190,000 170,000 10 40 388 C40
H1025 155,000 145,000 12 45 331 C35
H1075 145,000 125,000 13 45 311 C32
H1150 135,000 105,000 16 50 277 C28
H1150-M 115,000 75,000 18 55 255 C24
H1150-D 125,000 105,000 16 50 255 min-
311 max
C24-33

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)