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SAE-AISI H25 Steel vs. Nickel 684

SAE-AISI H25 steel belongs to the iron alloys classification, while nickel 684 belongs to the nickel alloys. There are 19 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI H25 steel and the bottom bar is nickel 684.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 79
76
Tensile Strength: Ultimate (UTS), MPa 710 to 1620
1190

Thermal Properties

Latent Heat of Fusion, J/g 250
320
Melting Completion (Liquidus), °C 1750
1370
Melting Onset (Solidus), °C 1700
1320
Specific Heat Capacity, J/kg-K 420
470
Thermal Expansion, µm/m-K 12
13

Otherwise Unclassified Properties

Base Metal Price, % relative 38
75
Density, g/cm3 9.1
8.3
Embodied Carbon, kg CO2/kg material 6.2
10
Embodied Energy, MJ/kg 93
140
Embodied Water, L/kg 83
360

Common Calculations

Stiffness to Weight: Axial, points 12
13
Stiffness to Weight: Bending, points 22
23
Strength to Weight: Axial, points 22 to 50
40
Strength to Weight: Bending, points 20 to 34
30
Thermal Shock Resistance, points 22 to 49
34

Alloy Composition

Aluminum (Al), % 0
2.5 to 3.3
Boron (B), % 0
0.0030 to 0.010
Carbon (C), % 0.22 to 0.32
0 to 0.15
Chromium (Cr), % 3.8 to 4.5
15 to 20
Cobalt (Co), % 0
13 to 20
Copper (Cu), % 0 to 0.25
0 to 0.15
Iron (Fe), % 77.2 to 81.3
0 to 4.0
Manganese (Mn), % 0.15 to 0.4
0 to 0.75
Molybdenum (Mo), % 0
3.0 to 5.0
Nickel (Ni), % 0 to 0.3
42.7 to 64
Phosphorus (P), % 0 to 0.030
0 to 0.015
Silicon (Si), % 0.15 to 0.4
0 to 0.75
Sulfur (S), % 0 to 0.030
0 to 0.015
Titanium (Ti), % 0
2.5 to 3.3
Tungsten (W), % 14 to 16
0
Vanadium (V), % 0.4 to 0.6
0