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SAE-AISI H41 Steel vs. ASTM A387 Grade 12 Steel

Both SAE-AISI H41 steel and ASTM A387 grade 12 steel are iron alloys. They have 86% 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 H41 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 0.29
0.29
Shear Modulus, GPa 77
73
Tensile Strength: Ultimate (UTS), MPa 710 to 2210
470 to 520

Thermal Properties

Latent Heat of Fusion, J/g 270
250
Melting Completion (Liquidus), °C 1560
1470
Melting Onset (Solidus), °C 1510
1420
Specific Heat Capacity, J/kg-K 450
470
Thermal Conductivity, W/m-K 28
44
Thermal Expansion, µm/m-K 12
13

Otherwise Unclassified Properties

Base Metal Price, % relative 18
2.8
Density, g/cm3 8.1
7.8
Embodied Carbon, kg CO2/kg material 6.8
1.6
Embodied Energy, MJ/kg 97
21
Embodied Water, L/kg 97
51

Common Calculations

PREN (Pitting Resistance) 35
2.7
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 24 to 76
16 to 18
Strength to Weight: Bending, points 22 to 47
17 to 18
Thermal Diffusivity, mm2/s 7.7
12
Thermal Shock Resistance, points 20 to 64
14 to 15

Alloy Composition

Carbon (C), % 0.6 to 0.75
0.050 to 0.17
Chromium (Cr), % 3.5 to 4.0
0.8 to 1.2
Iron (Fe), % 81.8 to 85
97 to 98.2
Manganese (Mn), % 0.15 to 0.4
0.4 to 0.65
Molybdenum (Mo), % 8.2 to 9.2
0.45 to 0.6
Phosphorus (P), % 0 to 0.030
0 to 0.025
Silicon (Si), % 0.2 to 0.45
0.15 to 0.4
Sulfur (S), % 0 to 0.030
0 to 0.025
Tungsten (W), % 1.4 to 2.1
0
Vanadium (V), % 1.0 to 1.3
0

Comparable Variants