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AWS BAg-21 vs. S21800 Stainless Steel

AWS BAg-21 belongs to the otherwise unclassified metals classification, while S21800 stainless steel belongs to the iron alloys. There are 16 material properties with values for both materials. Properties with values for just one material (16, in this case) are not shown.

For each property being compared, the top bar is AWS BAg-21 and the bottom bar is S21800 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 85
190
Poisson's Ratio 0.36
0.28
Shear Modulus, GPa 31
75
Tensile Strength: Ultimate (UTS), MPa 150
740

Thermal Properties

Latent Heat of Fusion, J/g 140
340
Melting Completion (Liquidus), °C 800
1360
Melting Onset (Solidus), °C 690
1310
Specific Heat Capacity, J/kg-K 280
500
Thermal Expansion, µm/m-K 19
16

Otherwise Unclassified Properties

Density, g/cm3 9.8
7.5
Embodied Energy, MJ/kg 970
45

Common Calculations

Stiffness to Weight: Axial, points 4.8
14
Stiffness to Weight: Bending, points 15
26
Strength to Weight: Axial, points 4.2
27
Strength to Weight: Bending, points 6.4
24
Thermal Shock Resistance, points 6.6
17

Alloy Composition


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Carbon (C), % 0
0 to 0.1
Chromium (Cr), % 0
16 to 18
Copper (Cu), % 27.5 to 29.5
0
Iron (Fe), % 0
59.1 to 65.4
Manganese (Mn), % 0
7.0 to 9.0
Nickel (Ni), % 2.0 to 3.0
8.0 to 9.0
Nitrogen (N), % 0
0.080 to 0.18
Phosphorus (P), % 0
0 to 0.060
Silicon (Si), % 0
3.5 to 4.5
Silver (Ag), % 62 to 64
0
Sulfur (S), % 0
0 to 0.030
Tin (Sn), % 5.0 to 7.0
0
Residuals, % 0 to 0.15
0