Nickel 725 vs. SAE-AISI H25 Steel

Nickel 725 belongs to the nickel alloys classification, while SAE-AISI H25 steel belongs to the iron alloys. There are 19 material properties with values for both materials. Properties with values for just one material (13, in this case) are not shown.

For each property being compared, the top bar is nickel 725 and the bottom bar is SAE-AISI H25 steel.

Nickel Alloy 725 (N07725)SAE-AISI H25 (T20825) Tungsten Hot-Work Steel

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa		200
Elastic (Young's, Tensile) Modulus, GPa		200

Poisson's Ratio		0.29
Poisson's Ratio		0.29

Shear Modulus, GPa		78
Shear Modulus, GPa		79

Tensile Strength: Ultimate (UTS), MPa		860
Tensile Strength: Ultimate (UTS), MPa		710 to 1620

Thermal Properties

Latent Heat of Fusion, J/g		320
Latent Heat of Fusion, J/g		250

Melting Completion (Liquidus), °C		1340
Melting Completion (Liquidus), °C		1750

Melting Onset (Solidus), °C		1270
Melting Onset (Solidus), °C		1700

Specific Heat Capacity, J/kg-K		440
Specific Heat Capacity, J/kg-K		420

Thermal Expansion, µm/m-K		13
Thermal Expansion, µm/m-K		12

Otherwise Unclassified Properties

Base Metal Price, % relative		75
Base Metal Price, % relative		38

Density, g/cm³		8.5
Density, g/cm³		9.1

Embodied Carbon, kg CO₂/kg material		13
Embodied Carbon, kg CO₂/kg material		6.2

Embodied Energy, MJ/kg		190
Embodied Energy, MJ/kg		93

Embodied Water, L/kg		270
Embodied Water, L/kg		83

Common Calculations

Stiffness to Weight: Axial, points		13
Stiffness to Weight: Axial, points		12

Stiffness to Weight: Bending, points		23
Stiffness to Weight: Bending, points		22

Strength to Weight: Axial, points		28
Strength to Weight: Axial, points		22 to 50

Strength to Weight: Bending, points		24
Strength to Weight: Bending, points		20 to 34

Thermal Shock Resistance, points		23
Thermal Shock Resistance, points		22 to 49

Alloy Composition

Aluminum (Al), %		0 to 0.35
Aluminum (Al), %		0

Carbon (C), %		0 to 0.030
Carbon (C), %		0.22 to 0.32

Chromium (Cr), %		19 to 22.5
Chromium (Cr), %		3.8 to 4.5

Copper (Cu), %		0
Copper (Cu), %		0 to 0.25

Iron (Fe), %		2.3 to 15.3
Iron (Fe), %		77.2 to 81.3

Manganese (Mn), %		0 to 0.35
Manganese (Mn), %		0.15 to 0.4

Molybdenum (Mo), %		7.0 to 9.5
Molybdenum (Mo), %		0

Nickel (Ni), %		55 to 59
Nickel (Ni), %		0 to 0.3

Niobium (Nb), %		2.8 to 4.0
Niobium (Nb), %		0

Phosphorus (P), %		0 to 0.015
Phosphorus (P), %		0 to 0.030

Silicon (Si), %		0 to 0.2
Silicon (Si), %		0.15 to 0.4

Sulfur (S), %		0 to 0.010
Sulfur (S), %		0 to 0.030

Titanium (Ti), %		1.0 to 1.7
Titanium (Ti), %		0

Tungsten (W), %		0
Tungsten (W), %		14 to 16

Vanadium (V), %		0
Vanadium (V), %		0.4 to 0.6