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ASTM Grade HK Steel vs. SAE-AISI H43 Steel

Both ASTM grade HK steel and SAE-AISI H43 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 H43 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
710 to 2140

Thermal Properties

Latent Heat of Fusion, J/g 310
270
Melting Completion (Liquidus), °C 1400
1530
Melting Onset (Solidus), °C 1350
1480
Specific Heat Capacity, J/kg-K 480
460
Thermal Conductivity, W/m-K 15
30
Thermal Expansion, µm/m-K 17
12

Otherwise Unclassified Properties

Base Metal Price, % relative 25
14
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 4.4
8.2
Embodied Energy, MJ/kg 63
120
Embodied Water, L/kg 200
100

Common Calculations

PREN (Pitting Resistance) 27
31
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 18
25 to 75
Strength to Weight: Bending, points 18
22 to 46
Thermal Diffusivity, mm2/s 3.9
8.3
Thermal Shock Resistance, points 11
21 to 62

Alloy Composition

Carbon (C), % 0.2 to 0.6
0.5 to 0.65
Chromium (Cr), % 24 to 28
3.8 to 4.5
Iron (Fe), % 44.8 to 57.8
83.2 to 85.9
Manganese (Mn), % 0 to 2.0
0.15 to 0.4
Molybdenum (Mo), % 0 to 0.5
7.8 to 8.5
Nickel (Ni), % 18 to 22
0
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 0 to 2.0
0.2 to 0.45
Sulfur (S), % 0 to 0.040
0 to 0.030
Vanadium (V), % 0
1.8 to 2.2