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15-5PH
Category Steel
Class Stainless steel
Type Precipitation-hardening standard
Designations United States: UNS S15500

Composition
ElementWeight %
C  0.07 
Mn  1.00 
Si   1.00 
Cr   14.0-15.5 
Ni   3.5-5.5 
P   0.04 
S   0.03 
Cu   2.5-4.5 
Nb+Ta   0.15-0.45 

Mechanical Properties
Properties Conditions 
T (°C)Treatment
Density (×1000 kg/m3) 7.7-8.03 25  
Poisson's Ratio 0.27-0.30 25  
Elastic Modulus (GPa) 196 25  
Tensile Strength (Mpa) 1070  25  H1025 (bar, plate, sheet, strip) more
Yield Strength (Mpa) 1000 
Elongation (%) 12 
Reduction in Area (%) 45 
Hardness (HRC) 35-42  25  H1025 (bar, plate, sheet, strip) more
Note: Values vary with flat-rolled products.

Thermal Properties
Properties Conditions 
T (°C)Treatment
Thermal Expansion (10-6/ºC) 10.8  0-100 more  
Thermal Conductivity (W/m-K) 17.8  100 more  
Specific Heat (J/kg-K) 420  0-100   

Electric Properties
Properties Conditions 
T (°C)Treatment
Electric Resistivity (10-9W-m) 770  25   
Glossary
STEM Career Outlook

Wages, employment opportunities, and growth projections for STEM jobs.

3D Scanners

A white paper to assist in the evaluation of 3D scanning hardware solutions.

CNC Machining Design Guide

Optimize your designs, reduce machining time, and lower your costs.

Metal 3D Printing Design Guide

Direct Metal Laser Sintering (DMLS) 3D printing for parts with reduced cost and little waste.