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AWS ERNiCrCoMo-1 vs. SAE-AISI P21 Steel

AWS ERNiCrCoMo-1 belongs to the nickel alloys classification, while SAE-AISI P21 steel belongs to the iron alloys. There are 23 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is AWS ERNiCrCoMo-1 and the bottom bar is SAE-AISI P21 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
190
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 81
73
Tensile Strength: Ultimate (UTS), MPa 710
1130

Thermal Properties

Latent Heat of Fusion, J/g 330
250
Melting Completion (Liquidus), °C 1420
1450
Melting Onset (Solidus), °C 1370
1410
Specific Heat Capacity, J/kg-K 450
470
Thermal Conductivity, W/m-K 13
41
Thermal Expansion, µm/m-K 13
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.4
7.9
Electrical Conductivity: Equal Weight (Specific), % IACS 1.5
9.0

Otherwise Unclassified Properties

Base Metal Price, % relative 75
6.5
Density, g/cm3 8.5
7.9
Embodied Carbon, kg CO2/kg material 10
2.3
Embodied Energy, MJ/kg 140
32
Embodied Water, L/kg 350
62

Common Calculations

Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 23
24
Strength to Weight: Axial, points 23
40
Strength to Weight: Bending, points 21
31
Thermal Diffusivity, mm2/s 3.5
11
Thermal Shock Resistance, points 19
37

Alloy Composition


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Aluminum (Al), % 0.8 to 1.5
0
Carbon (C), % 0.050 to 0.15
0.18 to 0.22
Chromium (Cr), % 20 to 24
0 to 0.5
Cobalt (Co), % 10 to 15
1.1 to 1.3
Copper (Cu), % 0 to 0.5
0 to 0.25
Iron (Fe), % 0 to 3.0
92.1 to 94.2
Manganese (Mn), % 0 to 1.0
0.35 to 0.72
Molybdenum (Mo), % 8.0 to 10
0
Nickel (Ni), % 42.7 to 61.2
3.9 to 4.3
Phosphorus (P), % 0 to 0.030
0 to 0.030
Silicon (Si), % 0 to 1.0
0.2 to 0.4
Sulfur (S), % 0 to 0.015
0 to 0.030
Titanium (Ti), % 0 to 0.6
0
Vanadium (V), % 0
0.15 to 0.25
Residuals, % 0 to 0.5
0