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AWS BVAg-31 vs. ASTM Grade HI Steel

AWS BVAg-31 belongs to the otherwise unclassified metals classification, while ASTM grade HI steel belongs to the iron alloys. There are 15 material properties with values for both materials. Properties with values for just one material (18, in this case) are not shown.

For each property being compared, the top bar is AWS BVAg-31 and the bottom bar is ASTM grade HI steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 90
200
Poisson's Ratio 0.36
0.27
Shear Modulus, GPa 33
79
Tensile Strength: Ultimate (UTS), MPa 180
550

Thermal Properties

Latent Heat of Fusion, J/g 150
310
Melting Completion (Liquidus), °C 850
1400
Melting Onset (Solidus), °C 820
1350
Specific Heat Capacity, J/kg-K 280
490
Thermal Expansion, µm/m-K 18
17

Otherwise Unclassified Properties

Density, g/cm3 10
7.8

Common Calculations

Stiffness to Weight: Axial, points 4.9
14
Stiffness to Weight: Bending, points 15
25
Strength to Weight: Axial, points 4.9
20
Strength to Weight: Bending, points 7.0
19
Thermal Shock Resistance, points 7.8
12

Alloy Composition

Cadmium (Cd), % 0 to 0.0010
0
Carbon (C), % 0 to 0.0050
0.2 to 0.5
Chromium (Cr), % 0
26 to 30
Copper (Cu), % 31 to 33
0
Iron (Fe), % 0
46.9 to 59.8
Lead (Pb), % 0 to 0.0020
0
Manganese (Mn), % 0
0 to 2.0
Molybdenum (Mo), % 0
0 to 0.5
Nickel (Ni), % 0
14 to 18
Palladium (Pd), % 8.0 to 12
0
Phosphorus (P), % 0 to 0.0020
0 to 0.040
Silicon (Si), % 0
0 to 2.0
Silver (Ag), % 57 to 59
0
Sulfur (S), % 0
0 to 0.040
Zinc (Zn), % 0 to 0.0010
0