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ASTM B522 Class I vs. AWS ER80S-Ni2

ASTM B522 class I belongs to the otherwise unclassified metals classification, while AWS ER80S-Ni2 belongs to the iron alloys. There are 21 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown. Please note that the two materials have significantly dissimilar densities. This means that additional care is required when interpreting the data, because some material properties are based on units of mass, while others are based on units of area or volume.

For each property being compared, the top bar is ASTM B522 class I and the bottom bar is AWS ER80S-Ni2.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 96
190
Elongation at Break, % 1.1 to 29
27
Poisson's Ratio 0.41
0.29
Shear Modulus, GPa 34
72
Tensile Strength: Ultimate (UTS), MPa 280 to 490
620
Tensile Strength: Yield (Proof), MPa 120 to 210
540

Thermal Properties

Latent Heat of Fusion, J/g 77
260
Melting Completion (Liquidus), °C 1030
1450
Melting Onset (Solidus), °C 1030
1410
Specific Heat Capacity, J/kg-K 160
470
Thermal Expansion, µm/m-K 15
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
7.5
Electrical Conductivity: Equal Weight (Specific), % IACS 5.8
8.6

Otherwise Unclassified Properties

Density, g/cm3 17
7.8

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 4.5 to 64
160
Resilience: Unit (Modulus of Resilience), kJ/m3 75 to 230
770
Stiffness to Weight: Axial, points 3.1
13
Stiffness to Weight: Bending, points 8.9
24
Strength to Weight: Axial, points 4.4 to 7.8
22
Strength to Weight: Bending, points 5.5 to 8.0
21
Thermal Shock Resistance, points 13 to 24
18

Alloy Composition

Carbon (C), % 0
0 to 0.12
Copper (Cu), % 0
0 to 0.35
Gold (Au), % 68 to 70
0
Iron (Fe), % 0
94.2 to 97.6
Manganese (Mn), % 0
0 to 1.3
Nickel (Ni), % 0
2.0 to 2.8
Phosphorus (P), % 0
0 to 0.025
Platinum (Pt), % 5.0 to 7.0
0
Silicon (Si), % 0
0.4 to 0.8
Silver (Ag), % 23.5 to 26.5
0
Sulfur (S), % 0
0 to 0.025
Residuals, % 0
0 to 0.5