EN 1.7321 Steel vs. N06255 Nickel

EN 1.7321 steel belongs to the iron alloys classification, while N06255 nickel belongs to the nickel alloys. There are 20 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 EN 1.7321 steel and the bottom bar is N06255 nickel.

EN 1.7321 (20MoCr4) Chromium-Molybdenum Steel UNS N06255 Nickel Alloy

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa		190
Elastic (Young's, Tensile) Modulus, GPa		210

Poisson's Ratio		0.29
Poisson's Ratio		0.28

Shear Modulus, GPa		73
Shear Modulus, GPa		81

Tensile Strength: Ultimate (UTS), MPa		490 to 1460
Tensile Strength: Ultimate (UTS), MPa		660

Thermal Properties

Latent Heat of Fusion, J/g		250
Latent Heat of Fusion, J/g		320

Maximum Temperature: Mechanical, °C		410
Maximum Temperature: Mechanical, °C		1000

Melting Completion (Liquidus), °C		1460
Melting Completion (Liquidus), °C		1470

Melting Onset (Solidus), °C		1420
Melting Onset (Solidus), °C		1420

Specific Heat Capacity, J/kg-K		470
Specific Heat Capacity, J/kg-K		450

Thermal Expansion, µm/m-K		13
Thermal Expansion, µm/m-K		13

Otherwise Unclassified Properties

Base Metal Price, % relative		2.5
Base Metal Price, % relative		55

Density, g/cm³		7.9
Density, g/cm³		8.5

Embodied Carbon, kg CO₂/kg material		1.5
Embodied Carbon, kg CO₂/kg material		9.4

Embodied Energy, MJ/kg		20
Embodied Energy, MJ/kg		130

Embodied Water, L/kg		50
Embodied Water, L/kg		270

Common Calculations

Stiffness to Weight: Axial, points		13
Stiffness to Weight: Axial, points		14

Stiffness to Weight: Bending, points		24
Stiffness to Weight: Bending, points		23

Strength to Weight: Axial, points		17 to 52
Strength to Weight: Axial, points		22

Strength to Weight: Bending, points		18 to 36
Strength to Weight: Bending, points		20

Thermal Shock Resistance, points		14 to 43
Thermal Shock Resistance, points		17

Alloy Composition

Carbon (C), %		0.17 to 0.23
Carbon (C), %		0 to 0.030

Chromium (Cr), %		0.3 to 0.6
Chromium (Cr), %		23 to 26

Copper (Cu), %		0 to 0.25
Copper (Cu), %		0 to 1.2

Iron (Fe), %		97.1 to 98.4
Iron (Fe), %		6.0 to 24

Manganese (Mn), %		0.7 to 1.0
Manganese (Mn), %		0 to 1.0

Molybdenum (Mo), %		0.4 to 0.5
Molybdenum (Mo), %		6.0 to 9.0

Nickel (Ni), %		0
Nickel (Ni), %		47 to 52

Phosphorus (P), %		0 to 0.025
Phosphorus (P), %		0 to 0.030

Silicon (Si), %		0 to 0.3
Silicon (Si), %		0 to 1.0

Sulfur (S), %		0 to 0.025
Sulfur (S), %		0 to 0.030

Titanium (Ti), %		0
Titanium (Ti), %		0 to 0.69

Tungsten (W), %		0
Tungsten (W), %		0 to 3.0