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SAE-AISI H25 Steel vs. ACI-ASTM CA15 Steel

Both SAE-AISI H25 steel and ACI-ASTM CA15 steel are iron alloys. They have 84% of their average alloy composition in common. There are 22 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 H25 steel and the bottom bar is ACI-ASTM CA15 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 79
76
Tensile Strength: Ultimate (UTS), MPa 710 to 1620
700

Thermal Properties

Latent Heat of Fusion, J/g 250
280
Melting Completion (Liquidus), °C 1750
1440
Melting Onset (Solidus), °C 1700
1500
Specific Heat Capacity, J/kg-K 420
480
Thermal Conductivity, W/m-K 26
25
Thermal Expansion, µm/m-K 12
10

Otherwise Unclassified Properties

Base Metal Price, % relative 38
7.5
Density, g/cm3 9.1
7.7
Embodied Carbon, kg CO2/kg material 6.2
2.0
Embodied Energy, MJ/kg 93
28
Embodied Water, L/kg 83
100

Common Calculations

PREN (Pitting Resistance) 29
14
Stiffness to Weight: Axial, points 12
14
Stiffness to Weight: Bending, points 22
25
Strength to Weight: Axial, points 22 to 50
25
Strength to Weight: Bending, points 20 to 34
23
Thermal Diffusivity, mm2/s 6.7
6.7
Thermal Shock Resistance, points 22 to 49
26

Alloy Composition

Carbon (C), % 0.22 to 0.32
0 to 0.15
Chromium (Cr), % 3.8 to 4.5
11.5 to 14
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 77.2 to 81.3
81.8 to 88.5
Manganese (Mn), % 0.15 to 0.4
0 to 1.0
Molybdenum (Mo), % 0
0 to 0.5
Nickel (Ni), % 0 to 0.3
0 to 1.0
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 0.15 to 0.4
0 to 1.5
Sulfur (S), % 0 to 0.030
0 to 0.040
Tungsten (W), % 14 to 16
0
Vanadium (V), % 0.4 to 0.6
0