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ASTM Grade HN Steel vs. ASTM A204 Steel

Both ASTM grade HN steel and ASTM A204 steel are iron alloys. There are 24 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is ASTM grade HN steel and the bottom bar is ASTM A204 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 140
160 to 180
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 9.0
18 to 22
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
73
Tensile Strength: Ultimate (UTS), MPa 500
520 to 590

Thermal Properties

Latent Heat of Fusion, J/g 310
250
Maximum Temperature: Mechanical, °C 1080
410
Melting Completion (Liquidus), °C 1400
1470
Melting Onset (Solidus), °C 1350
1420 to 1430
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 13
52
Thermal Expansion, µm/m-K 16
13

Otherwise Unclassified Properties

Base Metal Price, % relative 26
2.4
Density, g/cm3 7.9
7.9
Embodied Carbon, kg CO2/kg material 4.6
1.5
Embodied Energy, MJ/kg 66
20
Embodied Water, L/kg 180
47

Common Calculations

Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 17
18 to 21
Strength to Weight: Bending, points 18
18 to 20
Thermal Diffusivity, mm2/s 3.5
14
Thermal Shock Resistance, points 11
15 to 17