Supreme Steels

17-4 PH

Alloy 17-4 PH - Precipitation-Hardening Stainless Steel

Alloy 17-4 PH is a high-strength, corrosion-resistant stainless steel that combines excellent mechanical properties with ease of fabrication. It is widely used in aerospace, chemical, and other high-performance industries, thanks to its exceptional balance of strength, toughness, and resistance to corrosion. The alloy achieves its high strength through a precipitation-hardening process, making it a versatile material for critical structural and mechanical applications.

Features of 17-4 PH:

Specifications:

Applicable Standards:

Mechanical Properties (Heat Treated):

Property Value
Tensile Strength ~1150 MPa
Yield Strength ~1000 MPa
Elongation ~15-20%
Hardness (HRC) 38-44 HRC
Density 7.75 g/cm³

Thermal Properties:

Chemical Composition:

Element Percentage (%)
Chromium (Cr) 15.0-17.5
Nickel (Ni) 3.0-5.0
Copper (Cu) 3.0-5.0
Molybdenum (Mo) 0.3-1.0
Carbon (C) 0.07 max
Manganese (Mn) 1.0-2.0
Silicon (Si) ≤1.0
Phosphorus (P) ≤0.04
Sulfur (S) ≤0.03