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AISI 418 Stainless Steel vs. AWS BAg-5

AISI 418 stainless steel belongs to the iron alloys classification, while AWS BAg-5 belongs to the otherwise unclassified metals. There are 17 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 AISI 418 stainless steel and the bottom bar is AWS BAg-5.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
88
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 77
33
Tensile Strength: Ultimate (UTS), MPa 1100
150

Thermal Properties

Latent Heat of Fusion, J/g 270
140
Melting Completion (Liquidus), °C 1500
740
Melting Onset (Solidus), °C 1460
660
Specific Heat Capacity, J/kg-K 470
320
Thermal Expansion, µm/m-K 10
21

Otherwise Unclassified Properties

Density, g/cm3 8.0
9.0
Embodied Carbon, kg CO2/kg material 2.9
44
Embodied Energy, MJ/kg 41
700

Common Calculations

Stiffness to Weight: Axial, points 14
5.4
Stiffness to Weight: Bending, points 24
16
Strength to Weight: Axial, points 38
4.6
Strength to Weight: Bending, points 29
6.9
Thermal Shock Resistance, points 40
5.9

Alloy Composition

Carbon (C), % 0.15 to 0.2
0
Chromium (Cr), % 12 to 14
0
Copper (Cu), % 0
29 to 31
Iron (Fe), % 78.5 to 83.6
0
Manganese (Mn), % 0 to 0.5
0
Molybdenum (Mo), % 0 to 0.5
0
Nickel (Ni), % 1.8 to 2.2
0
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 0.5
0
Silver (Ag), % 0
44 to 46
Sulfur (S), % 0 to 0.030
0
Tungsten (W), % 2.5 to 3.5
0
Zinc (Zn), % 0
23 to 27
Residuals, % 0
0 to 0.15