15-5 PH Stainless Steel (UNS S15500) - High-strength, corrosion-resistant martensitic grade for aerospace, marine & nuclear applications. Get a quote for bars, forgings & plates.
Delivery :
FOB
minimum order :
50 kilograms
Supply Ability :
5000kilograms / Month
Stock Time :
7-10Day
Country of Origin :
CHINA
Quantity :
add to cart
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15-5PH (XM-12) is a martensitic precipitation-hardening stainless steel offering an excellent combination of high strength (up to 200 ksi tensile), good corrosion resistance, and exceptional toughness through the thickness. With improved transverse toughness compared to 17-4 PH due to tighter composition control, this alloy maintains corrosion resistance similar to 304 stainless in most environments. It is widely specified for aircraft components, marine gas turbine parts, nuclear reactor hardware, and chemical processing equipment requiring high strength and environmental resistance .
1. Product Specifications & Physical Data
ZYTC Alloy supplies 15-5PH in comprehensive mill forms for aerospace, defense, and industrial applications requiring verified mechanical properties and complete material traceability.
Available Forms: Bar (round, flat, hexagon, square), forgings, tube, wire, rings, sheet, strip, plate, and powder .
Specifications: AMS 5659, ASTM A564, UNS S15500, ASME SA564 .
Chemical Composition (Weight %)
15-5 PH Specification
Chromium (Cr)
14.0 - 15.5
Nickel (Ni)
3.5 - 5.5
Copper (Cu)
2.5 - 4.5
Niobium + Tantalum (Nb+Ta)
0.15 - 0.45
Carbon (C)
0.07 max.
Manganese (Mn)
1.0 max.
Silicon (Si)
1.0 max.
Phosphorus (P)
0.04 max.
Sulfur (S)
0.03 max.
Iron (Fe)
Balance
Physical Properties
Metric
Imperial
Density
7.8 g/cm³
0.282 lb/in³
Modulus of Elasticity
200 GPa
29.0 × 10⁶ psi
Poisson's Ratio
0.27 - 0.30
0.27 - 0.30
Thermal Conductivity (RT)
17.9 W/m·K
124 BTU·in/hr·ft²·°F
Mechanical Properties (Minimum)
Condition
Metric
Imperial
Tensile Strength
H900
1310 MPa
190 ksi
Yield Strength (0.2% offset)
H900
1170 MPa
170 ksi
Elongation
H900
10%
10%
Tensile Strength
H925
1240 MPa
180 ksi
Yield Strength
H925
1138 MPa
165 ksi
Tensile Strength
H1025
1069 MPa
155 ksi
Yield Strength
H1025
1000 MPa
145 ksi
Tensile Strength
H1075
1000 MPa
145 ksi
Yield Strength
H1075
862 MPa
125 ksi
Tensile Strength
H1100
965 MPa
140 ksi
Yield Strength
H1100
758 MPa
110 ksi
Tensile Strength
H1150
862 MPa
125 ksi
Yield Strength
H1150
586 MPa
85 ksi
Charpy Impact (H1025)
41 J
30 ft·lbf
2. Fabrication & Material Comparison
Heat Treatment: Solution anneal at 1038°C (1900°F) × 30 min, air cool; age harden at 482-621°C (900-1150°F) × 4 hours, air cool .
Forming: Mild forming in overaged condition; good workability .
Machining: Can be machined in any attainable condition; carbide tooling recommended .
Cold Working: Can be cold worked to improve yield strength .
Welding: Good weldability using shielded fusion or resistance methods; pre-weld cleaning essential .
Material Comparison:
vs. 17-4 PH: Superior transverse toughness; improved through-thickness properties; similar strength and corrosion resistance .
vs. 13-8 Mo: Lower strength but better cost-effectiveness; specified where 13-8 Mo properties not required .
vs. 304 Stainless: Significantly higher strength; comparable corrosion resistance .
vs. Custom 450: Similar properties; 15-5 offers better toughness in heavy sections .
Industrial: Paper mill equipment, gears, shafts, hollow shafts
General Engineering: High-strength fasteners, fittings, machinery components
Contact ZYTC Alloy for certified 15-5 PH materials with complete traceability, AMS/ASTM specifications, technical datasheets, and competitive pricing on standard sizes or custom-fabricated components.
