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AWS BVAg-31 vs. SAE-AISI 4340M Steel

AWS BVAg-31 belongs to the otherwise unclassified metals classification, while SAE-AISI 4340M steel belongs to the iron alloys. There are 15 material properties with values for both materials. Properties with values for just one material (21, in this case) are not shown.

For each property being compared, the top bar is AWS BVAg-31 and the bottom bar is SAE-AISI 4340M steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 90
190
Poisson's Ratio 0.36
0.29
Shear Modulus, GPa 33
72
Tensile Strength: Ultimate (UTS), MPa 180
2340

Thermal Properties

Latent Heat of Fusion, J/g 150
280
Melting Completion (Liquidus), °C 850
1440
Melting Onset (Solidus), °C 820
1400
Specific Heat Capacity, J/kg-K 280
480
Thermal Expansion, µm/m-K 18
13

Otherwise Unclassified Properties

Density, g/cm3 10
7.8

Common Calculations

Stiffness to Weight: Axial, points 4.9
13
Stiffness to Weight: Bending, points 15
25
Strength to Weight: Axial, points 4.9
84
Strength to Weight: Bending, points 7.0
51
Thermal Shock Resistance, points 7.8
70

Alloy Composition

Cadmium (Cd), % 0 to 0.0010
0
Carbon (C), % 0 to 0.0050
0.38 to 0.43
Chromium (Cr), % 0
0.7 to 1.0
Copper (Cu), % 31 to 33
0
Iron (Fe), % 0
93.3 to 94.8
Lead (Pb), % 0 to 0.0020
0
Manganese (Mn), % 0
0.65 to 0.9
Molybdenum (Mo), % 0
0.35 to 0.45
Nickel (Ni), % 0
1.7 to 2.0
Palladium (Pd), % 8.0 to 12
0
Phosphorus (P), % 0 to 0.0020
0 to 0.012
Silicon (Si), % 0
1.5 to 1.8
Silver (Ag), % 57 to 59
0
Sulfur (S), % 0
0 to 0.012
Vanadium (V), % 0
0.050 to 0.1
Zinc (Zn), % 0 to 0.0010
0