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ASTM B522 Class I vs. S44735 Stainless Steel

ASTM B522 class I belongs to the otherwise unclassified metals classification, while S44735 stainless steel belongs to the iron alloys. There are 20 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 S44735 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 96
210
Elongation at Break, % 1.1 to 29
21
Poisson's Ratio 0.41
0.27
Shear Modulus, GPa 34
82
Shear Strength, MPa 180 to 280
390
Tensile Strength: Ultimate (UTS), MPa 280 to 490
630
Tensile Strength: Yield (Proof), MPa 120 to 210
460

Thermal Properties

Latent Heat of Fusion, J/g 77
310
Melting Completion (Liquidus), °C 1030
1460
Melting Onset (Solidus), °C 1030
1420
Specific Heat Capacity, J/kg-K 160
480
Thermal Expansion, µm/m-K 15
11

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
520
Stiffness to Weight: Axial, points 3.1
15
Stiffness to Weight: Bending, points 8.9
26
Strength to Weight: Axial, points 4.4 to 7.8
23
Strength to Weight: Bending, points 5.5 to 8.0
21
Thermal Shock Resistance, points 13 to 24
20

Alloy Composition

Carbon (C), % 0
0 to 0.030
Chromium (Cr), % 0
28 to 30
Gold (Au), % 68 to 70
0
Iron (Fe), % 0
60.7 to 68.4
Manganese (Mn), % 0
0 to 1.0
Molybdenum (Mo), % 0
3.6 to 4.2
Nickel (Ni), % 0
0 to 1.0
Niobium (Nb), % 0
0.2 to 1.0
Nitrogen (N), % 0
0 to 0.045
Phosphorus (P), % 0
0 to 0.040
Platinum (Pt), % 5.0 to 7.0
0
Silicon (Si), % 0
0 to 1.0
Silver (Ag), % 23.5 to 26.5
0
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 0
0.2 to 1.0
Residuals, % 0 to 0.35
0