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ASTM A387 Grade 22 Steel vs. AWS ERNiFeCr-2

ASTM A387 grade 22 steel belongs to the iron alloys classification, while AWS ERNiFeCr-2 belongs to the nickel alloys. They have a modest 22% 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 (8, in this case) are not shown.

For each property being compared, the top bar is ASTM A387 grade 22 steel and the bottom bar is AWS ERNiFeCr-2.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 21
28
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 74
75
Tensile Strength: Ultimate (UTS), MPa 480 to 600
1300

Thermal Properties

Latent Heat of Fusion, J/g 260
310
Melting Completion (Liquidus), °C 1470
1460
Melting Onset (Solidus), °C 1430
1410
Specific Heat Capacity, J/kg-K 470
450
Thermal Conductivity, W/m-K 40
12
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.5
1.4
Electrical Conductivity: Equal Weight (Specific), % IACS 8.6
1.5

Otherwise Unclassified Properties

Base Metal Price, % relative 3.8
75
Density, g/cm3 7.9
8.3
Embodied Carbon, kg CO2/kg material 1.7
13
Embodied Energy, MJ/kg 23
190
Embodied Water, L/kg 58
250

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
23
Strength to Weight: Axial, points 17 to 21
43
Strength to Weight: Bending, points 17 to 20
32
Thermal Diffusivity, mm2/s 11
3.2
Thermal Shock Resistance, points 14 to 17
38

Alloy Composition

Aluminum (Al), % 0
0.2 to 0.8
Boron (B), % 0
0 to 0.0030
Carbon (C), % 0.050 to 0.15
0 to 0.080
Chromium (Cr), % 2.0 to 2.5
17 to 21
Copper (Cu), % 0
0 to 0.3
Iron (Fe), % 95.1 to 96.8
11.6 to 24.6
Manganese (Mn), % 0.3 to 0.6
0 to 0.35
Molybdenum (Mo), % 0.9 to 1.1
2.8 to 3.3
Nickel (Ni), % 0
50 to 55
Niobium (Nb), % 0
4.8 to 5.5
Phosphorus (P), % 0 to 0.025
0 to 0.015
Silicon (Si), % 0 to 0.5
0 to 0.35
Sulfur (S), % 0 to 0.025
0 to 0.015
Titanium (Ti), % 0
0.65 to 1.2
Residuals, % 0
0 to 0.5