AISI Type S15500 (15Cr-5Ni) Precipitation Hardening Stainless Steel tested at 650°C (1200°F), condition H925


Subcategory: Ferrous Metal; Metal; Precipitation Hardening Stainless; Stainless Steel; T S10000 Series Stainless Steel

Key Words: 15-5 PH, 15-5PH, 15/5 PH, 15/5PH, XM12, AMS 5862, ASME SA705 (XM-12), ASTM A564 (XM-12), ASTM A693 (XM-12), ASTM A705 (XM-12), AFNOR NF A35-581 Z6CNU15.05, DIN 1.4540, DIN X4CrNiCuNb164, Cr-Ni 15-5, UNS S15500, AMS 5658, AMS 5659, AMS 5826

Component   Wt. %
CMax 0.07 
Cr14.8 
Cu3.5 
Fe75 
Component   Wt. %
MnMax 1 
Nb + Ta0.3 
Ni4.5 
Component   Wt. %
PMax 0.04 
SMax 0.03 
SiMax 1 

Material Notes:
Martensitic, precipitative hardening (maraging), combining high strength and hardness with excellent corrosion resistance. Applications include valve parts, fittings and fasteners, shafts, gears, chemical process equipment, paper mill equipment, aircraft components and nuclear reactor components.

Physical PropertiesMetricEnglishComments
Density7.8 g/cc0.282 lb/in³ Solution treated plus 480°C for 1 hour, air cooled.

Mechanical Properties
Tensile Strength, Ultimate400 MPa58000 psi 
Tensile Strength, Yield317 MPa46000 psi at 0.2% offset
Elongation at Break26 %26 % gage length is 4 times diameter
Modulus of Elasticity200 GPa29000 ksi Typical elastic modulus for stainless steel
Charpy Impact79 J58.3 ft-lb at 24°C, 38 J at -12°C, 22 J at -40°C, 9 J at -73°C

Electrical Properties
Electrical Resistivity7.7e-005 ohm-cm7.7e-005 ohm-cm Solution treated plus 480°C for 1 hour, air cooled.
Magnetic Permeability9595 approximate value for the annealed condition at RT

Thermal Properties
CTE, linear 20°C10.8 µm/m-°C6 µin/in-°F at 21-93°C, 10.4 µm/m°C at -73-21°C, 10.8 µm/m°C at 21-205°C
CTE, linear 250°C11.3 µm/m-°C6.28 µin/in-°F at 21-315°C, 11.7 µm/m°C at 21-425°C
CTE, linear 500°C15.6 µm/m-°C8.67 µin/in-°F Typical CTE from 0 - 1000°C for stainless steel.
Specific Heat Capacity0.42 J/g-°C0.1 BTU/lb-°F Solution treated plus 480°C for 1 hour, air cooled.
Thermal Conductivity17.8 W/m-K124 BTU-in/hr-ft²-°F at 150°C, 19.5 W/m-°C at 260°C, 22.5 W/m-°C at 460°C, 22.7 W/m-°C at 480°C
Melting Point1405 - 1440 °C2560 - 2620 °F Solution treated plus 480°C for 1 hour, air cooled.
Solidus1405 °C2560 °F 
Liquidus1440 °C2620 °F 

References for this datasheet.


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