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SAE-AISI A3 Steel vs. SAE-AISI H25 Steel

Both SAE-AISI A3 steel and SAE-AISI H25 steel are iron alloys. They have 85% of their average alloy composition in common. There are 22 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI A3 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 700 to 2150
710 to 1620

Thermal Properties

Latent Heat of Fusion, J/g 260
250
Melting Completion (Liquidus), °C 1450
1750
Melting Onset (Solidus), °C 1410
1700
Specific Heat Capacity, J/kg-K 470
420
Thermal Conductivity, W/m-K 37
26
Thermal Expansion, µm/m-K 12
12

Otherwise Unclassified Properties

Base Metal Price, % relative 6.0
38
Density, g/cm3 7.8
9.1
Embodied Carbon, kg CO2/kg material 4.4
6.2
Embodied Energy, MJ/kg 67
93
Embodied Water, L/kg 78
83

Common Calculations

PREN (Pitting Resistance) 8.9
29
Stiffness to Weight: Axial, points 14
12
Stiffness to Weight: Bending, points 25
22
Strength to Weight: Axial, points 25 to 77
22 to 50
Strength to Weight: Bending, points 23 to 48
20 to 34
Thermal Diffusivity, mm2/s 10
6.7
Thermal Shock Resistance, points 23 to 70
22 to 49

Alloy Composition

Carbon (C), % 1.2 to 1.3
0.22 to 0.32
Chromium (Cr), % 4.8 to 5.5
3.8 to 4.5
Copper (Cu), % 0 to 0.25
0 to 0.25
Iron (Fe), % 88.7 to 92
77.2 to 81.3
Manganese (Mn), % 0.4 to 0.6
0.15 to 0.4
Molybdenum (Mo), % 0.9 to 1.4
0
Nickel (Ni), % 0 to 0.3
0 to 0.3
Phosphorus (P), % 0 to 0.030
0 to 0.030
Silicon (Si), % 0 to 0.5
0.15 to 0.4
Sulfur (S), % 0 to 0.030
0 to 0.030
Tungsten (W), % 0
14 to 16
Vanadium (V), % 0.8 to 1.4
0.4 to 0.6

Comparable Variants