What is the yield of alloy 725?
Alloy 725, Inconel 725 – Description
Alloy 725 (N07725) is a precipitation hardenable Ni-Cr-Fe-Mo alloy with a niobium alloying addition. It can be considered an age hardening variant of Alloy 625, with comparable corrosion resistance but higher strength.
Resistant to general corrosion, pitting, sulfide stress cracking, hydrogen embrittlement and stress corrosion cracking in sour gas wells.
Applications
Hangers, landing subs, side pocket mandrels, polished bore sockets in sour gas service, high strength fasteners in marine applications, polymer extrusion dies.
Physical and Mechanical Properties
Room Temperature Physical Properties:
Density: 8.31 g/cm3
Melting Temperature: 1271-1343 °C
Magnetic Permeability: <1.001
High Temperature Thermal Expansion Coefficient, from 20°C to:
100°C: 13.0 μm/m⋅K
200°C: 13.1 μm/m⋅K
300°C: 13.4 μm/m⋅K
400°C: 13.7 μm/m⋅K
500°C: 14.1 μm/m⋅K
600°C: 14.4 μm/m⋅K
Thermal Conductivity:
20°C: 10.631 W/m·K
100°C: 11.827 W/m·K
200°C: 13.544 W/m · K
300°C: 15.122 W/m·K
400°C: 16.843 W/m·K
500°C: 18.152 W/m·K
600°C: 20.037 W/m·K
700°C: 22.424 W/m·K
800°C: 23.062 W/m·K
900°C: 23.812 W/m·K
1000°C: 25.361 W/m·K
1100°C: 27.038 W/m·K
1200°C: 29.604 W/m·K
Resistivity:
20°C: 1.144 μΩ·m
100°C: 1.158 μΩ·m
200°C: 1.179 μΩ·m
300°C: 1.206 μΩ·m
400°C: 1.226 μΩ·m
500°C: 1.251 μΩ·m
600°C: 1.265 μΩ·m
700°C: 1.273 μΩ·m
800°C: 1.302 μΩ·m
Specific heat capacity:
20°C: 430 J/kg⋅K
100°C: 447 J/kg⋅K
200°C: 468 J/kg⋅K
300°C: 589 J/kg⋅K
400°C: 508 J/kg⋅K
500°C: 519 J/kg⋅K
600°C: 552 J/kg⋅K
700°C: 604 J/kg⋅K
800°C: 609 J/kg⋅K
900°C: 618 J/kg⋅K
1000°C: 639 J/kg⋅K
1100°C: 654 J/kg⋅K
1200°C: 673 J/kg⋅K
Young's modulus:
20°C: 204 GPa
100°C: 200 GPa
200°C: 194 GPa
300°C: 188 GPa
400°C: 182 GPa
500°C: 177 GPa
600°C: 169 GPa
700°C: 160 GPa
800°C: 150 GPa
Shear modulus:
20°C: 78 GPa
100°C: 76 GPa
200°C: 74 GPa
300°C: 71 GPa
400°C: 69 GPa
500°C: 67 GPa
600°C: 63 GPa
700°C: 61 GPa
800°C: 56 GPa
Poisson's ratio:
20°C: 0.31
500°C: 0.32
600°C: 0.35
700°C: 0.32
800°C: 0.33
Mechanical properties of Inconel 725 bars according to the manufacturer:
Solution treated:
Yield strength: 427 MPa
Tensile strength: 855 MPa
Elongation: 57 %
Hardness: 5 Rc
Age hardened:
Yield strength: 917 MPa
Tensile strength: 1241 MPa
Elongation: 30 %
Hardness: 36 Rc
Impact value: 92 J
Inconel 725 according to the manufacturer Mechanical properties of the tube:
Solution treated:
Yield strength: 334 MPa
Tensile strength: 783 MPa
Elongation: 60 %
Hardness: 5 Rc
Age hardened:
Yield strength: 921 MPa
Tensile strength: 1268 MPa
Elongation: 27 %
Hardness: 39 Rc
