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ASTM Grade HD Steel vs. AWS ENiCrMo-3

ASTM grade HD steel belongs to the iron alloys classification, while AWS ENiCrMo-3 belongs to the nickel alloys. They have a modest 32% of their average alloy composition in common, which, by itself, doesn't mean much. There are 24 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 ASTM grade HD steel and the bottom bar is AWS ENiCrMo-3.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 9.1
34
Poisson's Ratio 0.27
0.29
Shear Modulus, GPa 80
79
Tensile Strength: Ultimate (UTS), MPa 590
870

Thermal Properties

Latent Heat of Fusion, J/g 310
330
Melting Completion (Liquidus), °C 1410
1480
Melting Onset (Solidus), °C 1370
1430
Specific Heat Capacity, J/kg-K 490
440
Thermal Conductivity, W/m-K 16
11
Thermal Expansion, µm/m-K 11
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.1
1.3
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
1.4

Otherwise Unclassified Properties

Base Metal Price, % relative 17
80
Density, g/cm3 7.7
8.6
Embodied Carbon, kg CO2/kg material 3.1
14
Embodied Energy, MJ/kg 45
190
Embodied Water, L/kg 180
290

Common Calculations

Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 26
23
Strength to Weight: Axial, points 21
28
Strength to Weight: Bending, points 20
24
Thermal Diffusivity, mm2/s 4.3
2.8
Thermal Shock Resistance, points 19
25

Alloy Composition

Carbon (C), % 0 to 0.5
0 to 0.1
Chromium (Cr), % 26 to 30
20 to 23
Cobalt (Co), % 0
0 to 0.12
Copper (Cu), % 0
0 to 0.5
Iron (Fe), % 58.4 to 70
0 to 7.0
Manganese (Mn), % 0 to 1.5
0 to 1.0
Molybdenum (Mo), % 0 to 0.5
8.0 to 10
Nickel (Ni), % 4.0 to 7.0
55 to 68.9
Niobium (Nb), % 0
3.2 to 4.2
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 0 to 2.0
0 to 0.75
Sulfur (S), % 0 to 0.040
0 to 0.020
Residuals, % 0
0 to 0.5