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ASTM B522 Class I vs. S32803 Stainless Steel

ASTM B522 class I belongs to the otherwise unclassified metals classification, while S32803 stainless steel belongs to the iron alloys. There are 22 material properties with values for both materials. Properties with values for just one material (13, in this case) are not shown. Please note that the two materials have significantly dissimilar densities. This means that additional care is required when interpreting the data, because some material properties are based on units of mass, while others are based on units of area or volume.

For each property being compared, the top bar is ASTM B522 class I and the bottom bar is S32803 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 96
210
Elongation at Break, % 1.1 to 29
18
Poisson's Ratio 0.41
0.27
Shear Modulus, GPa 34
81
Shear Strength, MPa 180 to 280
420
Tensile Strength: Ultimate (UTS), MPa 280 to 490
680
Tensile Strength: Yield (Proof), MPa 120 to 210
560

Thermal Properties

Latent Heat of Fusion, J/g 77
300
Melting Completion (Liquidus), °C 1030
1450
Melting Onset (Solidus), °C 1030
1400
Specific Heat Capacity, J/kg-K 160
480
Thermal Expansion, µm/m-K 15
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
2.3
Electrical Conductivity: Equal Weight (Specific), % IACS 5.8
2.6

Otherwise Unclassified Properties

Density, g/cm3 17
7.7

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 4.5 to 64
120
Resilience: Unit (Modulus of Resilience), kJ/m3 75 to 230
760
Stiffness to Weight: Axial, points 3.1
15
Stiffness to Weight: Bending, points 8.9
25
Strength to Weight: Axial, points 4.4 to 7.8
25
Strength to Weight: Bending, points 5.5 to 8.0
22
Thermal Shock Resistance, points 13 to 24
22

Alloy Composition

Carbon (C), % 0
0 to 0.015
Chromium (Cr), % 0
28 to 29
Gold (Au), % 68 to 70
0
Iron (Fe), % 0
62.9 to 67.1
Manganese (Mn), % 0
0 to 0.5
Molybdenum (Mo), % 0
1.8 to 2.5
Nickel (Ni), % 0
3.0 to 4.0
Niobium (Nb), % 0
0.15 to 0.5
Nitrogen (N), % 0
0 to 0.020
Phosphorus (P), % 0
0 to 0.020
Platinum (Pt), % 5.0 to 7.0
0
Silicon (Si), % 0
0 to 0.55
Silver (Ag), % 23.5 to 26.5
0
Sulfur (S), % 0
0 to 0.0035
Residuals, % 0 to 0.35
0