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ASTM Grade HN Steel vs. Austenitic Nodular Cast Iron

Both ASTM grade HN steel and austenitic nodular cast iron are iron alloys. There are 21 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is ASTM grade HN steel and the bottom bar is austenitic nodular cast iron.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 140
140 to 240
Elastic (Young's, Tensile) Modulus, GPa 200
180 to 190
Elongation at Break, % 9.0
6.8 to 34
Poisson's Ratio 0.28
0.29 to 0.3
Shear Modulus, GPa 77
70 to 72
Tensile Strength: Ultimate (UTS), MPa 500
430 to 500

Thermal Properties

Latent Heat of Fusion, J/g 310
280 to 350
Melting Completion (Liquidus), °C 1400
1340 to 1400
Melting Onset (Solidus), °C 1350
1300 to 1360
Specific Heat Capacity, J/kg-K 480
470 to 490
Thermal Expansion, µm/m-K 16
13 to 14

Otherwise Unclassified Properties

Base Metal Price, % relative 26
16 to 25
Density, g/cm3 7.9
7.7 to 8.0
Embodied Carbon, kg CO2/kg material 4.6
3.5 to 4.9
Embodied Energy, MJ/kg 66
48 to 68
Embodied Water, L/kg 180
91 to 120

Common Calculations

Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24 to 25
Strength to Weight: Axial, points 17
15 to 18
Strength to Weight: Bending, points 18
16 to 18
Thermal Shock Resistance, points 11
12 to 15