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AWS E312 vs. ASTM B522 Class II

AWS E312 belongs to the iron alloys classification, while ASTM B522 class II belongs to the otherwise unclassified metals. There are 16 material properties with values for both materials. Properties with values for just one material (12, 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 AWS E312 and the bottom bar is ASTM B522 class II.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
96
Elongation at Break, % 25
1.1 to 28
Poisson's Ratio 0.27
0.41
Shear Modulus, GPa 80
34
Tensile Strength: Ultimate (UTS), MPa 740
280 to 490

Thermal Properties

Latent Heat of Fusion, J/g 310
77
Melting Completion (Liquidus), °C 1410
1030
Melting Onset (Solidus), °C 1360
1030
Specific Heat Capacity, J/kg-K 480
160
Thermal Expansion, µm/m-K 15
15

Otherwise Unclassified Properties

Density, g/cm3 7.7
17

Common Calculations

Stiffness to Weight: Axial, points 15
3.1
Stiffness to Weight: Bending, points 25
8.9
Strength to Weight: Axial, points 27
4.4 to 7.8
Strength to Weight: Bending, points 24
5.5 to 8.0
Thermal Shock Resistance, points 18
13 to 24

Alloy Composition


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Carbon (C), % 0 to 0.15
0
Chromium (Cr), % 28 to 32
0
Copper (Cu), % 0 to 0.75
0
Gold (Au), % 0
68.5 to 69.5
Iron (Fe), % 52.3 to 63.5
0
Manganese (Mn), % 0.5 to 2.5
0
Molybdenum (Mo), % 0 to 0.75
0
Nickel (Ni), % 8.0 to 10.5
0
Phosphorus (P), % 0 to 0.040
0
Platinum (Pt), % 0
5.5 to 6.5
Silicon (Si), % 0 to 1.0
0
Silver (Ag), % 0
24.5 to 25.5
Sulfur (S), % 0 to 0.030
0 to 0.010
Residuals, % 0
0 to 0.26