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ACI-ASTM CD3MWCuN Steel vs. ASTM Grade HN Steel

Both ACI-ASTM CD3MWCuN steel and ASTM grade HN steel are iron alloys. They have 81% of their average alloy composition in common. There are 25 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is ACI-ASTM CD3MWCuN steel and the bottom bar is ASTM grade HN steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 29
9.0
Poisson's Ratio 0.27
0.28
Shear Modulus, GPa 80
77
Tensile Strength: Ultimate (UTS), MPa 790
500

Thermal Properties

Latent Heat of Fusion, J/g 300
310
Maximum Temperature: Corrosion, °C 450
420
Maximum Temperature: Mechanical, °C 1100
1080
Melting Completion (Liquidus), °C 1460
1400
Melting Onset (Solidus), °C 1410
1350
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 16
13
Thermal Expansion, µm/m-K 13
16

Otherwise Unclassified Properties

Base Metal Price, % relative 22
26
Density, g/cm3 7.9
7.9
Embodied Carbon, kg CO2/kg material 4.2
4.6
Embodied Energy, MJ/kg 58
66
Embodied Water, L/kg 180
180

Common Calculations

PREN (Pitting Resistance) 42
22
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 28
17
Strength to Weight: Bending, points 24
18
Thermal Diffusivity, mm2/s 4.2
3.5
Thermal Shock Resistance, points 22
11

Alloy Composition

Carbon (C), % 0 to 0.030
0.2 to 0.5
Chromium (Cr), % 24 to 26
19 to 23
Copper (Cu), % 0.5 to 1.0
0
Iron (Fe), % 56.6 to 65.3
44.9 to 57.8
Manganese (Mn), % 0 to 1.5
0 to 2.0
Molybdenum (Mo), % 3.0 to 4.0
0 to 0.5
Nickel (Ni), % 6.5 to 8.5
23 to 27
Nitrogen (N), % 0.2 to 0.3
0
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 2.0
Sulfur (S), % 0 to 0.025
0 to 0.040
Tungsten (W), % 0.5 to 1.0
0