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ASTM Grade HK Steel vs. ASTM A732 Cast Steel

Both ASTM grade HK steel and ASTM A732 cast steel are iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is ASTM grade HK steel and the bottom bar is ASTM A732 cast steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150
140 to 440
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 11
4.0 to 25
Fatigue Strength, MPa 150
230 to 750
Poisson's Ratio 0.27
0.29
Shear Modulus, GPa 79
72 to 73
Tensile Strength: Ultimate (UTS), MPa 500
460 to 1470
Tensile Strength: Yield (Proof), MPa 270
310 to 1340

Thermal Properties

Latent Heat of Fusion, J/g 310
250 to 260
Maximum Temperature: Mechanical, °C 1100
400 to 430
Melting Completion (Liquidus), °C 1400
1440 to 1460
Melting Onset (Solidus), °C 1350
1400 to 1420
Specific Heat Capacity, J/kg-K 480
470 to 480
Thermal Conductivity, W/m-K 15
39 to 50
Thermal Expansion, µm/m-K 17
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
7.1 to 7.7
Electrical Conductivity: Equal Weight (Specific), % IACS 2.3
8.2 to 8.9

Otherwise Unclassified Properties

Base Metal Price, % relative 25
2.0 to 3.8
Density, g/cm3 7.8
7.8 to 7.9
Embodied Carbon, kg CO2/kg material 4.4
1.4 to 1.7
Embodied Energy, MJ/kg 63
19 to 24
Embodied Water, L/kg 200
47 to 54

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 48
45 to 130
Resilience: Unit (Modulus of Resilience), kJ/m3 190
260 to 4770
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 18
16 to 52
Strength to Weight: Bending, points 18
17 to 37
Thermal Diffusivity, mm2/s 3.9
10 to 14
Thermal Shock Resistance, points 11
14 to 43