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AWS ERNiCrFe-6 vs. ASTM A387 Grade 9 Steel

AWS ERNiCrFe-6 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 ERNiCrFe-6 and the bottom bar is ASTM A387 grade 9 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 34
20 to 21
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 74
75
Tensile Strength: Ultimate (UTS), MPa 630
500 to 600

Thermal Properties

Latent Heat of Fusion, J/g 310
270
Melting Completion (Liquidus), °C 1370
1460
Melting Onset (Solidus), °C 1320
1410
Specific Heat Capacity, J/kg-K 460
470
Thermal Conductivity, W/m-K 13
26
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.4
9.0
Electrical Conductivity: Equal Weight (Specific), % IACS 1.5
10

Otherwise Unclassified Properties

Base Metal Price, % relative 55
6.5
Density, g/cm3 8.4
7.8
Embodied Carbon, kg CO2/kg material 9.8
2.1
Embodied Energy, MJ/kg 140
28
Embodied Water, L/kg 260
87

Common Calculations

Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 21
18 to 21
Strength to Weight: Bending, points 19
18 to 20
Thermal Diffusivity, mm2/s 3.3
6.9
Thermal Shock Resistance, points 19
14 to 17

Alloy Composition


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Carbon (C), % 0 to 0.080
0 to 0.15
Chromium (Cr), % 14 to 17
8.0 to 10
Copper (Cu), % 0 to 0.5
0
Iron (Fe), % 0 to 8.0
87.1 to 90.8
Manganese (Mn), % 2.0 to 2.7
0.3 to 0.6
Molybdenum (Mo), % 0
0.9 to 1.1
Nickel (Ni), % 67 to 81.5
0
Phosphorus (P), % 0 to 0.030
0 to 0.025
Silicon (Si), % 0 to 0.35
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.025
Titanium (Ti), % 2.5 to 3.5
0
Vanadium (V), % 0
0 to 0.040
Residuals, % 0 to 0.5
0