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ASTM B522 Class I vs. AISI 434 Stainless Steel

ASTM B522 class I belongs to the otherwise unclassified metals classification, while AISI 434 stainless steel belongs to the iron alloys. There are 22 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 AISI 434 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 96
200
Elongation at Break, % 1.1 to 29
24
Poisson's Ratio 0.41
0.28
Shear Modulus, GPa 34
78
Shear Strength, MPa 180 to 280
330
Tensile Strength: Ultimate (UTS), MPa 280 to 490
520
Tensile Strength: Yield (Proof), MPa 120 to 210
320

Thermal Properties

Latent Heat of Fusion, J/g 77
280
Melting Completion (Liquidus), °C 1030
1510
Melting Onset (Solidus), °C 1030
1430
Specific Heat Capacity, J/kg-K 160
480
Thermal Expansion, µm/m-K 15
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
2.5
Electrical Conductivity: Equal Weight (Specific), % IACS 5.8
2.9

Otherwise Unclassified Properties

Density, g/cm3 17
7.7

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 4.5 to 64
110
Resilience: Unit (Modulus of Resilience), kJ/m3 75 to 230
260
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
19
Strength to Weight: Bending, points 5.5 to 8.0
18
Thermal Shock Resistance, points 13 to 24
19

Alloy Composition

Carbon (C), % 0
0 to 0.12
Chromium (Cr), % 0
16 to 18
Gold (Au), % 68 to 70
0
Iron (Fe), % 0
78.6 to 83.3
Manganese (Mn), % 0
0 to 1.0
Molybdenum (Mo), % 0
0.75 to 1.3
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
Residuals, % 0 to 0.35
0