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ASTM Grade HK Steel vs. SAE-AISI M46 Steel

Both ASTM grade HK steel and SAE-AISI M46 steel are iron alloys. They have 57% 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 ASTM grade HK steel and the bottom bar is SAE-AISI M46 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Poisson's Ratio 0.27
0.29
Shear Modulus, GPa 79
77
Tensile Strength: Ultimate (UTS), MPa 500
800 to 2300

Thermal Properties

Latent Heat of Fusion, J/g 310
270
Melting Completion (Liquidus), °C 1400
1540
Melting Onset (Solidus), °C 1350
1500
Specific Heat Capacity, J/kg-K 480
450
Thermal Conductivity, W/m-K 15
18
Thermal Expansion, µm/m-K 17
12

Otherwise Unclassified Properties

Base Metal Price, % relative 25
33
Density, g/cm3 7.8
8.1
Embodied Carbon, kg CO2/kg material 4.4
12
Embodied Energy, MJ/kg 63
180
Embodied Water, L/kg 200
150

Common Calculations

PREN (Pitting Resistance) 27
35
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 18
27 to 78
Strength to Weight: Bending, points 18
24 to 48
Thermal Diffusivity, mm2/s 3.9
4.9
Thermal Shock Resistance, points 11
25 to 71

Alloy Composition

Carbon (C), % 0.2 to 0.6
1.2 to 1.3
Chromium (Cr), % 24 to 28
3.7 to 4.2
Cobalt (Co), % 0
7.8 to 8.8
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 44.8 to 57.8
70 to 73.8
Manganese (Mn), % 0 to 2.0
0.2 to 0.4
Molybdenum (Mo), % 0 to 0.5
8.0 to 8.5
Nickel (Ni), % 18 to 22
0 to 0.3
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 0 to 2.0
0.4 to 0.65
Sulfur (S), % 0 to 0.040
0 to 0.030
Tungsten (W), % 0
1.9 to 2.2
Vanadium (V), % 0
3.0 to 3.3