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ASTM B522 Class I vs. S21600 Stainless Steel

ASTM B522 class I belongs to the otherwise unclassified metals classification, while S21600 stainless steel belongs to the iron alloys. There are 20 material properties with values for both materials. Properties with values for just one material (14, 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 S21600 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 96
200
Elongation at Break, % 1.1 to 29
46
Poisson's Ratio 0.41
0.28
Shear Modulus, GPa 34
79
Shear Strength, MPa 180 to 280
500
Tensile Strength: Ultimate (UTS), MPa 280 to 490
710
Tensile Strength: Yield (Proof), MPa 120 to 210
390

Thermal Properties

Latent Heat of Fusion, J/g 77
290
Melting Completion (Liquidus), °C 1030
1420
Melting Onset (Solidus), °C 1030
1380
Specific Heat Capacity, J/kg-K 160
480
Thermal Expansion, µm/m-K 15
17

Otherwise Unclassified Properties

Density, g/cm3 17
7.7

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 4.5 to 64
270
Resilience: Unit (Modulus of Resilience), kJ/m3 75 to 230
370
Stiffness to Weight: Axial, points 3.1
14
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
23
Thermal Shock Resistance, points 13 to 24
15

Alloy Composition

Carbon (C), % 0
0 to 0.080
Chromium (Cr), % 0
17.5 to 22
Gold (Au), % 68 to 70
0
Iron (Fe), % 0
57.6 to 67.8
Manganese (Mn), % 0
7.5 to 9.0
Molybdenum (Mo), % 0
2.0 to 3.0
Nickel (Ni), % 0
5.0 to 7.0
Nitrogen (N), % 0
0.25 to 0.5
Phosphorus (P), % 0
0 to 0.045
Platinum (Pt), % 5.0 to 7.0
0
Silicon (Si), % 0
0 to 0.75
Silver (Ag), % 23.5 to 26.5
0
Sulfur (S), % 0
0 to 0.030
Residuals, % 0 to 0.35
0