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SAE-AISI 94B17 Steel vs. SAE-AISI H25 Steel

Both SAE-AISI 94B17 steel and SAE-AISI H25 steel are iron alloys. They have 81% of their average alloy composition in common. There are 21 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI 94B17 steel and the bottom bar is SAE-AISI H25 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
79
Tensile Strength: Ultimate (UTS), MPa 440
710 to 1620

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Melting Completion (Liquidus), °C 1460
1750
Melting Onset (Solidus), °C 1420
1700
Specific Heat Capacity, J/kg-K 470
420
Thermal Conductivity, W/m-K 39
26
Thermal Expansion, µm/m-K 13
12

Otherwise Unclassified Properties

Base Metal Price, % relative 2.4
38
Density, g/cm3 7.8
9.1
Embodied Carbon, kg CO2/kg material 1.5
6.2
Embodied Energy, MJ/kg 20
93
Embodied Water, L/kg 49
83

Common Calculations

Stiffness to Weight: Axial, points 13
12
Stiffness to Weight: Bending, points 24
22
Strength to Weight: Axial, points 16
22 to 50
Strength to Weight: Bending, points 16
20 to 34
Thermal Diffusivity, mm2/s 10
6.7
Thermal Shock Resistance, points 13
22 to 49

Alloy Composition

Boron (B), % 0.00050 to 0.0030
0
Carbon (C), % 0.15 to 0.2
0.22 to 0.32
Chromium (Cr), % 0.3 to 0.5
3.8 to 4.5
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 97.1 to 98.3
77.2 to 81.3
Manganese (Mn), % 0.75 to 1.0
0.15 to 0.4
Molybdenum (Mo), % 0.080 to 0.15
0
Nickel (Ni), % 0.3 to 0.6
0 to 0.3
Phosphorus (P), % 0 to 0.035
0 to 0.030
Silicon (Si), % 0.15 to 0.35
0.15 to 0.4
Sulfur (S), % 0 to 0.040
0 to 0.030
Tungsten (W), % 0
14 to 16
Vanadium (V), % 0
0.4 to 0.6