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ASTM Grade HN Steel vs. AWS ENiCrFe-3

ASTM grade HN steel belongs to the iron alloys classification, while AWS ENiCrFe-3 belongs to the nickel alloys. They have 47% of their average alloy composition in common. There are 20 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is ASTM grade HN steel and the bottom bar is AWS ENiCrFe-3.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 9.0
34
Poisson's Ratio 0.28
0.3
Shear Modulus, GPa 77
74
Tensile Strength: Ultimate (UTS), MPa 500
630

Thermal Properties

Latent Heat of Fusion, J/g 310
310
Melting Completion (Liquidus), °C 1400
1370
Melting Onset (Solidus), °C 1350
1320
Specific Heat Capacity, J/kg-K 480
460
Thermal Expansion, µm/m-K 16
13

Otherwise Unclassified Properties

Base Metal Price, % relative 26
65
Density, g/cm3 7.9
8.4
Embodied Carbon, kg CO2/kg material 4.6
11
Embodied Energy, MJ/kg 66
150
Embodied Water, L/kg 180
260

Common Calculations

Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
23
Strength to Weight: Axial, points 17
21
Strength to Weight: Bending, points 18
19
Thermal Shock Resistance, points 11
18

Alloy Composition

Carbon (C), % 0.2 to 0.5
0 to 0.1
Chromium (Cr), % 19 to 23
13 to 17
Cobalt (Co), % 0
0 to 0.12
Copper (Cu), % 0
0 to 0.5
Iron (Fe), % 44.9 to 57.8
0 to 10
Manganese (Mn), % 0 to 2.0
5.0 to 9.5
Molybdenum (Mo), % 0 to 0.5
0
Nickel (Ni), % 23 to 27
52 to 81
Niobium (Nb), % 0
1.0 to 2.5
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 0 to 2.0
0 to 1.0
Sulfur (S), % 0 to 0.040
0 to 0.015
Tantalum (Ta), % 0
0 to 0.3
Titanium (Ti), % 0
0 to 1.0
Residuals, % 0
0 to 0.5