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SAE-AISI A4 Steel vs. AWS BAg-19

SAE-AISI A4 steel belongs to the iron alloys classification, while AWS BAg-19 belongs to the otherwise unclassified metals. There are 15 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI A4 steel and the bottom bar is AWS BAg-19.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
74
Poisson's Ratio 0.29
0.37
Shear Modulus, GPa 73
27
Tensile Strength: Ultimate (UTS), MPa 710 to 2050
140

Thermal Properties

Latent Heat of Fusion, J/g 250
120
Melting Completion (Liquidus), °C 1450
890
Melting Onset (Solidus), °C 1410
760
Specific Heat Capacity, J/kg-K 470
250
Thermal Expansion, µm/m-K 12
20

Otherwise Unclassified Properties

Density, g/cm3 7.8
10

Common Calculations

Stiffness to Weight: Axial, points 13
4.0
Stiffness to Weight: Bending, points 24
14
Strength to Weight: Axial, points 25 to 73
3.8
Strength to Weight: Bending, points 23 to 46
5.8
Thermal Shock Resistance, points 23 to 67
6.9

Alloy Composition

Carbon (C), % 1.0 to 1.1
0
Chromium (Cr), % 0.9 to 2.2
0
Copper (Cu), % 0 to 0.25
6.6 to 7.9
Iron (Fe), % 92 to 95.5
0
Lithium (Li), % 0
0.15 to 0.3
Manganese (Mn), % 1.8 to 2.2
0
Molybdenum (Mo), % 0.9 to 1.4
0
Nickel (Ni), % 0 to 0.3
0
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 0 to 0.5
0
Silver (Ag), % 0
92 to 93
Sulfur (S), % 0 to 0.030
0
Residuals, % 0
0 to 0.15