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ASTM A182 Grade F6b vs. SAE-AISI H12 Steel

Both ASTM A182 grade F6b and SAE-AISI H12 steel are iron alloys. They have a moderately high 91% of their average alloy composition in common. There are 24 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 ASTM A182 grade F6b and the bottom bar is SAE-AISI H12 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 76
75
Tensile Strength: Ultimate (UTS), MPa 850
690 to 1850

Thermal Properties

Latent Heat of Fusion, J/g 280
270
Melting Completion (Liquidus), °C 1450
1480
Melting Onset (Solidus), °C 1400
1440
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 25
36
Thermal Expansion, µm/m-K 10
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.8
8.3
Electrical Conductivity: Equal Weight (Specific), % IACS 3.2
9.5

Otherwise Unclassified Properties

Base Metal Price, % relative 8.0
9.0
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 2.2
2.9
Embodied Energy, MJ/kg 30
41
Embodied Water, L/kg 100
76

Common Calculations

PREN (Pitting Resistance) 14
12
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 30
24 to 65
Strength to Weight: Bending, points 26
22 to 42
Thermal Diffusivity, mm2/s 6.7
9.8
Thermal Shock Resistance, points 31
22 to 60

Alloy Composition

Carbon (C), % 0 to 0.15
0.3 to 0.4
Chromium (Cr), % 11.5 to 13.5
4.8 to 5.5
Copper (Cu), % 0 to 0.5
0 to 0.25
Iron (Fe), % 81.2 to 87.1
87.8 to 91.7
Manganese (Mn), % 0 to 1.0
0.2 to 0.5
Molybdenum (Mo), % 0.4 to 0.6
1.3 to 1.8
Nickel (Ni), % 1.0 to 2.0
0 to 0.3
Phosphorus (P), % 0 to 0.020
0 to 0.030
Silicon (Si), % 0 to 1.0
0.8 to 1.2
Sulfur (S), % 0 to 0.020
0 to 0.030
Tungsten (W), % 0
1.0 to 1.7
Vanadium (V), % 0
0 to 0.5