ASTM B685 Alloy vs. EN 1.4020 Stainless Steel

ASTM B685 alloy belongs to the otherwise unclassified metals classification, while EN 1.4020 stainless steel belongs to the iron alloys. There are 15 material properties with values for both materials. Properties with values for just one material (16, in this case) are not shown.

For each property being compared, the top bar is ASTM B685 alloy and the bottom bar is EN 1.4020 stainless steel.

ASTM B685 Palladium-Copper Electrical Contact Alloy EN 1.4020 (X13CrMnNiN18-13-2) Stainless Steel

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa		120
Elastic (Young's, Tensile) Modulus, GPa		200

Poisson's Ratio		0.37
Poisson's Ratio		0.28

Shear Modulus, GPa		43
Shear Modulus, GPa		77

Tensile Strength: Ultimate (UTS), MPa		660 to 1060
Tensile Strength: Ultimate (UTS), MPa		770 to 1130

Thermal Properties

Latent Heat of Fusion, J/g		180
Latent Heat of Fusion, J/g		280

Melting Completion (Liquidus), °C		1230
Melting Completion (Liquidus), °C		1390

Melting Onset (Solidus), °C		1200
Melting Onset (Solidus), °C		1350

Specific Heat Capacity, J/kg-K		300
Specific Heat Capacity, J/kg-K		480

Thermal Expansion, µm/m-K		14
Thermal Expansion, µm/m-K		17

Otherwise Unclassified Properties

Density, g/cm³		11
Density, g/cm³		7.6

Common Calculations

Stiffness to Weight: Axial, points		6.1
Stiffness to Weight: Axial, points		14

Stiffness to Weight: Bending, points		15
Stiffness to Weight: Bending, points		25

Strength to Weight: Axial, points		17 to 27
Strength to Weight: Axial, points		28 to 41

Strength to Weight: Bending, points		16 to 21
Strength to Weight: Bending, points		25 to 32

Thermal Shock Resistance, points		28 to 46
Thermal Shock Resistance, points		16 to 23

Alloy Composition

Aluminum (Al), %		0 to 0.0050
Aluminum (Al), %		0

Cadmium (Cd), %		0 to 0.050
Cadmium (Cd), %		0

Carbon (C), %		0
Carbon (C), %		0 to 0.15

Chromium (Cr), %		0
Chromium (Cr), %		16.5 to 19

Copper (Cu), %		39.5 to 40.5
Copper (Cu), %		0

Iron (Fe), %		0 to 0.050
Iron (Fe), %		62.8 to 71.8

Lead (Pb), %		0 to 0.030
Lead (Pb), %		0

Manganese (Mn), %		0
Manganese (Mn), %		11 to 14

Nickel (Ni), %		0
Nickel (Ni), %		0.5 to 2.5

Nitrogen (N), %		0
Nitrogen (N), %		0.2 to 0.45

Palladium (Pd), %		59 to 60.5
Palladium (Pd), %		0

Phosphorus (P), %		0
Phosphorus (P), %		0 to 0.045

Silicon (Si), %		0
Silicon (Si), %		0 to 1.0

Silver (Ag), %		0 to 0.1
Silver (Ag), %		0

Sulfur (S), %		0
Sulfur (S), %		0 to 0.030

Zinc (Zn), %		0 to 0.060
Zinc (Zn), %		0

Residuals, %		0 to 0.2
Residuals, %		0