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ASTM B540 Palladium vs. S21640 Stainless Steel

ASTM B540 palladium belongs to the otherwise unclassified metals classification, while S21640 stainless steel belongs to the iron alloys. There are 23 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.

For each property being compared, the top bar is ASTM B540 palladium and the bottom bar is S21640 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
200
Elongation at Break, % 1.1 to 14
46
Fatigue Strength, MPa 350
320
Poisson's Ratio 0.38
0.28
Shear Modulus, GPa 39
78
Shear Strength, MPa 500 to 700
520
Tensile Strength: Ultimate (UTS), MPa 830 to 1240
740
Tensile Strength: Yield (Proof), MPa 620 to 1000
350

Thermal Properties

Latent Heat of Fusion, J/g 140
290
Melting Completion (Liquidus), °C 1220
1430
Melting Onset (Solidus), °C 1020
1380
Specific Heat Capacity, J/kg-K 240
480
Thermal Expansion, µm/m-K 14
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 4.9 to 5.5
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 3.5 to 3.9
2.8

Otherwise Unclassified Properties

Density, g/cm3 13
7.7

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 13 to 100
280
Resilience: Unit (Modulus of Resilience), kJ/m3 1790 to 4660
300
Stiffness to Weight: Axial, points 4.7
14
Stiffness to Weight: Bending, points 12
25
Strength to Weight: Axial, points 18 to 27
27
Strength to Weight: Bending, points 15 to 20
23
Thermal Shock Resistance, points 41 to 61
16

Alloy Composition

Carbon (C), % 0
0 to 0.080
Chromium (Cr), % 0
17.5 to 19.5
Copper (Cu), % 13.5 to 14.5
0
Gold (Au), % 9.5 to 10.5
0
Iron (Fe), % 0
63 to 74.3
Manganese (Mn), % 0
3.5 to 6.5
Molybdenum (Mo), % 0
0.5 to 2.0
Nickel (Ni), % 0
4.0 to 6.5
Niobium (Nb), % 0
0.1 to 1.0
Nitrogen (N), % 0
0.080 to 0.3
Palladium (Pd), % 34 to 36
0
Phosphorus (P), % 0
0 to 0.060
Platinum (Pt), % 9.5 to 10.5
0
Silicon (Si), % 0
0 to 1.0
Silver (Ag), % 29 to 31
0
Sulfur (S), % 0
0 to 0.030
Zinc (Zn), % 0.8 to 1.2
0
Residuals, % 0 to 0.3
0