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AWS ENiCu-7 vs. ASTM A369 Grade FP21

AWS ENiCu-7 belongs to the nickel alloys classification, while ASTM A369 grade FP21 belongs to the iron alloys. 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 AWS ENiCu-7 and the bottom bar is ASTM A369 grade FP21.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 160
190
Elongation at Break, % 34
20
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 62
74
Tensile Strength: Ultimate (UTS), MPa 550
470

Thermal Properties

Latent Heat of Fusion, J/g 280
260
Melting Completion (Liquidus), °C 1270
1470
Melting Onset (Solidus), °C 1230
1430
Specific Heat Capacity, J/kg-K 430
470
Thermal Conductivity, W/m-K 21
41
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.3
7.7
Electrical Conductivity: Equal Weight (Specific), % IACS 3.3
8.8

Otherwise Unclassified Properties

Base Metal Price, % relative 50
4.0
Density, g/cm3 8.7
7.8
Embodied Carbon, kg CO2/kg material 8.0
1.8
Embodied Energy, MJ/kg 110
23
Embodied Water, L/kg 250
61

Common Calculations

Stiffness to Weight: Axial, points 10
13
Stiffness to Weight: Bending, points 21
24
Strength to Weight: Axial, points 17
17
Strength to Weight: Bending, points 17
17
Thermal Diffusivity, mm2/s 5.5
11
Thermal Shock Resistance, points 18
14

Alloy Composition

Aluminum (Al), % 0 to 0.75
0
Carbon (C), % 0 to 0.1
0.050 to 0.15
Chromium (Cr), % 0
2.7 to 3.4
Copper (Cu), % 20.6 to 38
0
Iron (Fe), % 0 to 2.5
94.3 to 96.2
Manganese (Mn), % 0 to 4.0
0.3 to 0.6
Molybdenum (Mo), % 0
0.8 to 1.1
Nickel (Ni), % 62 to 69
0
Phosphorus (P), % 0 to 0.020
0 to 0.025
Silicon (Si), % 0 to 1.5
0 to 0.5
Sulfur (S), % 0 to 0.015
0 to 0.025
Titanium (Ti), % 0 to 1.0
0
Residuals, % 0 to 0.5
0