Haynes 25 alloy, vacuum investment castings, solution treated, tested at 760C (1400F)

Subcategory: Cobalt Base; Metal; Superalloy

Key Words: UNS R30605, AMS 5537, AMS 5759, AMS 5796, AMS 5795

Component   Wt. %
FeMax 3 
SiMax 0.4 

Material Notes:
Excellent high-temperature strength with good resistance to oxidizing environments up to 980C for prolonged exposures and excellent resistance to sulfidation and excellent resistance to metal galling. Applications in the aerospace industry, including parts in military and commercial gas turbine engines.

Data provided by the manufacturer, Haynes International, Inc.

Physical PropertiesMetricEnglishComments
Density9.13 g/cc0.33 lb/in at RT

Mechanical Properties
Tensile Strength, Ultimate315 MPa45700 psi 
Tensile Strength, Yield170 MPa24700 psi at 0.2%
Elongation at Break24 %24 % in 5D
Reduction of Area29 %29 % 
Modulus of Elasticity225 GPa32600 ksi RT
Modulus of Elasticity at Elevated Temperature146 GPa21200 ksi 1000C (1830F)
Modulus of Elasticity at Elevated Temperature154 GPa22300 ksi 900C (1650F)
Modulus of Elasticity at Elevated Temperature163 GPa23600 ksi 800C (1470F)
Modulus of Elasticity at Elevated Temperature174 GPa25200 ksi 700C (1290F)
Modulus of Elasticity at Elevated Temperature181 GPa26300 ksi 600C (1110F)
Modulus of Elasticity at Elevated Temperature188 GPa27300 ksi 500C (930F)
Modulus of Elasticity at Elevated Temperature197 GPa28600 ksi 400C (750F)
Modulus of Elasticity at Elevated Temperature204 GPa29600 ksi 300C (570F)
Modulus of Elasticity at Elevated Temperature214 GPa31000 ksi 200C (390F)
Modulus of Elasticity at Elevated Temperature222 GPa32200 ksi 100C (212F)
Charpy Impact262 J193 ft-lb at RT, 148 J at -196C (-320F), 182 J at -138C (-216F), 212 J at -78C (-108F), 243 J at -29C (-20F), 297 J at 260C (500F), 273 J at 540C (1000F), 230 J at 650C (1200F), 194 J at 760C (1400F), 163 J at 870C (1600F), 144 J at 980C (1800F)

Electrical Properties
Electrical Resistivity8.86e-005 ohm-cm8.86e-005 ohm-cm RT
Electrical Resistivity at Elevated Temperature0.0001011 ohm-cm0.0001011 ohm-cm 900C (1650F)
Electrical Resistivity at Elevated Temperature0.0001066 ohm-cm0.0001066 ohm-cm 700C (1290F)
Electrical Resistivity at Elevated Temperature0.0001078 ohm-cm0.0001078 ohm-cm 800C (1470F)
Electrical Resistivity at Elevated Temperature9.5e-005 ohm-cm9.5e-005 ohm-cm 1000C (1830F)

Thermal Properties
CTE, linear 20C12.3 m/m-C6.83 in/in-F 25-100C (77-212F)
CTE, linear 250C12.9 m/m-C7.17 in/in-F 25-200C (77-390F)
CTE, linear 500C13.6 m/m-C7.56 in/in-F 25-300C (77-570F)
CTE, linear 500C14.3 m/m-C7.94 in/in-F 25-500C (77-930F)
CTE, linear 500C14.3 m/m-C7.94 in/in-F 25-400C (77-750F)
CTE, linear 1000C14.6 m/m-C8.11 in/in-F 25-600C (77-1110F)
CTE, linear 1000C15.1 m/m-C8.39 in/in-F 25-700C (77-1290F)
CTE, linear 1000C15.8 m/m-C8.78 in/in-F 25-800C (77-1440F)
CTE, linear 1000C16.5 m/m-C9.17 in/in-F 25-900C (77-1650F)
CTE, linear 1000C17 m/m-C9.44 in/in-F 25-1000C (77-1830F)
Thermal Conductivity9.4 W/m-K65.2 BTU-in/hr-ft-F RT
Thermal Conductivity at Elevated Temperature10.9 W/m-K75.6 BTU-in/hr-ft-F 100C (212F)
Thermal Conductivity at Elevated Temperature12.9 W/m-K89.5 BTU-in/hr-ft-F 200C (390F)
Thermal Conductivity at Elevated Temperature14.8 W/m-K103 BTU-in/hr-ft-F 300C (570F)
Thermal Conductivity at Elevated Temperature16.8 W/m-K117 BTU-in/hr-ft-F 400C (750F)
Thermal Conductivity at Elevated Temperature18.7 W/m-K130 BTU-in/hr-ft-F 500C (930F)
Thermal Conductivity at Elevated Temperature20.7 W/m-K144 BTU-in/hr-ft-F 600C (1110F)
Thermal Conductivity at Elevated Temperature22.6 W/m-K157 BTU-in/hr-ft-F 700C (1290F)
Thermal Conductivity at Elevated Temperature24.7 W/m-K171 BTU-in/hr-ft-F 800C (1470F)
Thermal Conductivity at Elevated Temperature26.7 W/m-K185 BTU-in/hr-ft-F 900C (1650F)
Thermal Conductivity at Elevated Temperature29.2 W/m-K203 BTU-in/hr-ft-F 1000C (1830F)
Melting Point1330 - 1410 C2430 - 2570 F 
Solidus1330 C2430 F 
Liquidus1410 C2570 F 

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