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SAE-AISI H23 Steel vs. ASTM A387 Grade 12 Steel

Both SAE-AISI H23 steel and ASTM A387 grade 12 steel are iron alloys. They have 76% of their average alloy composition in common. There are 22 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI H23 steel and the bottom bar is ASTM A387 grade 12 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 80
73
Tensile Strength: Ultimate (UTS), MPa 760 to 1550
470 to 520

Thermal Properties

Latent Heat of Fusion, J/g 260
250
Melting Completion (Liquidus), °C 1680
1470
Melting Onset (Solidus), °C 1630
1420
Specific Heat Capacity, J/kg-K 440
470
Thermal Conductivity, W/m-K 20
44
Thermal Expansion, µm/m-K 12
13

Otherwise Unclassified Properties

Base Metal Price, % relative 34
2.8
Density, g/cm3 8.7
7.8
Embodied Carbon, kg CO2/kg material 6.9
1.6
Embodied Energy, MJ/kg 110
21
Embodied Water, L/kg 120
51

Common Calculations

PREN (Pitting Resistance) 32
2.7
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 22
24
Strength to Weight: Axial, points 24 to 49
16 to 18
Strength to Weight: Bending, points 21 to 34
17 to 18
Thermal Diffusivity, mm2/s 5.2
12
Thermal Shock Resistance, points 23 to 47
14 to 15

Alloy Composition

Carbon (C), % 0.25 to 0.35
0.050 to 0.17
Chromium (Cr), % 11 to 12.8
0.8 to 1.2
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 71.3 to 76.7
97 to 98.2
Manganese (Mn), % 0.15 to 0.4
0.4 to 0.65
Molybdenum (Mo), % 0
0.45 to 0.6
Nickel (Ni), % 0 to 0.3
0
Phosphorus (P), % 0 to 0.030
0 to 0.025
Silicon (Si), % 0.15 to 0.6
0.15 to 0.4
Sulfur (S), % 0 to 0.030
0 to 0.025
Tungsten (W), % 11 to 12.8
0
Vanadium (V), % 0.75 to 1.3
0

Comparable Variants