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AISI 420F Stainless Steel vs. AWS BAg-8a

AISI 420F stainless steel belongs to the iron alloys classification, while AWS BAg-8a belongs to the otherwise unclassified metals. There are 15 material properties with values for both materials. Properties with values for just one material (19, in this case) are not shown.

For each property being compared, the top bar is AISI 420F stainless steel and the bottom bar is AWS BAg-8a.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
83
Poisson's Ratio 0.28
0.36
Shear Modulus, GPa 76
31
Tensile Strength: Ultimate (UTS), MPa 740
150

Thermal Properties

Latent Heat of Fusion, J/g 270
140
Melting Completion (Liquidus), °C 1440
770
Melting Onset (Solidus), °C 1390
770
Specific Heat Capacity, J/kg-K 480
290
Thermal Expansion, µm/m-K 10
19

Otherwise Unclassified Properties

Density, g/cm3 7.7
10

Common Calculations

Stiffness to Weight: Axial, points 14
4.6
Stiffness to Weight: Bending, points 25
15
Strength to Weight: Axial, points 27
4.2
Strength to Weight: Bending, points 23
6.3
Thermal Shock Resistance, points 27
6.7

Alloy Composition

Carbon (C), % 0.3 to 0.4
0
Chromium (Cr), % 12 to 14
0
Copper (Cu), % 0
26.4 to 28.8
Iron (Fe), % 82.4 to 87.6
0
Lithium (Li), % 0
0.25 to 0.5
Manganese (Mn), % 0 to 1.3
0
Molybdenum (Mo), % 0 to 0.5
0
Phosphorus (P), % 0 to 0.060
0
Silicon (Si), % 0 to 1.0
0
Silver (Ag), % 0
71 to 73
Sulfur (S), % 0.15 to 0.35
0
Residuals, % 0
0 to 0.15