Stainless 17-4 PH

Description:

Stainless Steel 17-4 PH is a pre-alloyed stainless steel in fine powder form. The 17-4 PH stainless steel may be hardened by a precipitation-hardening heat treatment. Excellent mechanical properties at a high strength level may be obtained by such treatment. This material machines well and has excellent welding characteristics. The combination of excellent mechanical and processing properties makes this grade adaptable to a wide variety of applications.

Applications:

  • Used where high strength and good corrosion resistance are required
  • Applications requiring high fatigue strength, good resistance to galling, seizing and stress corrosion
  • Suitable for intricate parts requiring machining and welding

Carbon (C) = max 0.07%Phosphorus (P) = max 0.040%
Silicon (Si) = max 1.00%Chromium (Cr) = 15.00 – 17.50%
Sulfur (S) = max 0.030%Molybdenum (Mo) = max 0.50%
Nickel (Ni) = 3.00 - 5.00%Tantalum (Ta) plus Niobium (Nb) = 0.15 – 0.45%
Copper (Cu) = 3.00 - 5.00%Iron (Fe) = Balance
Manganese (Mn) = max 1.00%

Stress Relief (SR):

Stress relieve at 1900°F for 1 or 2 hours

Solution Heat Treatment (SHT):

Solution heat treat at 1900°F for 1 or 2 hours

Aging Heat Treatment:

Based on time and temperature


17-4 SR and SHT MLS AMS5604/5643 Typical Wrought
YS (ksi)112.5160 max110 – 145
UTS (ksi)154.4185 max150 – 160
Elongation (%)12.23 min5 – 8
Hardness (HRC)28.239 max33
17-4 H900 MLS AMS5604/5643 Typical Wrought
YS (ksi)182.9170 min180 – 200
UTS (ksi)206.3190 min195 – 210
Elongation (%)11.95 – 10 min7 – 15
Hardness (HRC)42.740 – 4743 – 45
17-4 H1025 MLS AMS5604/5643 Typical Wrought
YS (ksi)163.5145 min152 – 170
UTS (ksi)170.9155 min168 – 185
Elongation (%)12.45 – 12 min8 – 16
Hardness (HRC)36.535 – 4238

The data above is general information that may vary from machine to machine and supplier to supplier.

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