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AWS ENiCu-7 vs. ASTM A387 Grade 9 Steel

AWS ENiCu-7 belongs to the nickel alloys classification, while ASTM A387 grade 9 steel 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 A387 grade 9 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 160
190
Elongation at Break, % 34
20 to 21
Poisson's Ratio 0.32
0.28
Shear Modulus, GPa 62
75
Tensile Strength: Ultimate (UTS), MPa 550
500 to 600

Thermal Properties

Latent Heat of Fusion, J/g 280
270
Melting Completion (Liquidus), °C 1270
1460
Melting Onset (Solidus), °C 1230
1410
Specific Heat Capacity, J/kg-K 430
470
Thermal Conductivity, W/m-K 21
26
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.3
9.0
Electrical Conductivity: Equal Weight (Specific), % IACS 3.3
10

Otherwise Unclassified Properties

Base Metal Price, % relative 50
6.5
Density, g/cm3 8.7
7.8
Embodied Carbon, kg CO2/kg material 8.0
2.1
Embodied Energy, MJ/kg 110
28
Embodied Water, L/kg 250
87

Common Calculations

Stiffness to Weight: Axial, points 10
14
Stiffness to Weight: Bending, points 21
25
Strength to Weight: Axial, points 17
18 to 21
Strength to Weight: Bending, points 17
18 to 20
Thermal Diffusivity, mm2/s 5.5
6.9
Thermal Shock Resistance, points 18
14 to 17

Alloy Composition

Aluminum (Al), % 0 to 0.75
0
Carbon (C), % 0 to 0.1
0 to 0.15
Chromium (Cr), % 0
8.0 to 10
Copper (Cu), % 20.6 to 38
0
Iron (Fe), % 0 to 2.5
87.1 to 90.8
Manganese (Mn), % 0 to 4.0
0.3 to 0.6
Molybdenum (Mo), % 0
0.9 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 1.0
Sulfur (S), % 0 to 0.015
0 to 0.025
Titanium (Ti), % 0 to 1.0
0
Vanadium (V), % 0
0 to 0.040
Residuals, % 0 to 0.5
0