S31727 Stainless Steel vs. Type 2 Magnetic Alloy

Both S31727 stainless steel and Type 2 magnetic alloy are iron alloys. They have 67% of their average alloy composition in common. 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 S31727 stainless steel and the bottom bar is Type 2 magnetic alloy.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa		200
Elastic (Young's, Tensile) Modulus, GPa		190

Elongation at Break, %		40
Elongation at Break, %		2.0 to 38

Poisson's Ratio		0.28
Poisson's Ratio		0.3

Shear Modulus, GPa		78
Shear Modulus, GPa		72

Tensile Strength: Ultimate (UTS), MPa		630
Tensile Strength: Ultimate (UTS), MPa		510 to 910

Tensile Strength: Yield (Proof), MPa		270
Tensile Strength: Yield (Proof), MPa		260 to 870

Thermal Properties

Latent Heat of Fusion, J/g		290
Latent Heat of Fusion, J/g		270

Melting Completion (Liquidus), °C		1440
Melting Completion (Liquidus), °C		1420

Melting Onset (Solidus), °C		1390
Melting Onset (Solidus), °C		1370

Specific Heat Capacity, J/kg-K		470
Specific Heat Capacity, J/kg-K		460

Thermal Expansion, µm/m-K		16
Thermal Expansion, µm/m-K		12

Otherwise Unclassified Properties

Base Metal Price, % relative		24
Base Metal Price, % relative		33

Density, g/cm³		8.0
Density, g/cm³		8.4

Embodied Carbon, kg CO₂/kg material		4.7
Embodied Carbon, kg CO₂/kg material		5.9

Embodied Energy, MJ/kg		64
Embodied Energy, MJ/kg		81

Embodied Water, L/kg		180
Embodied Water, L/kg		140

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m³		200
Resilience: Ultimate (Unit Rupture Work), MJ/m³		18 to 160

Resilience: Unit (Modulus of Resilience), kJ/m³		190
Resilience: Unit (Modulus of Resilience), kJ/m³		170 to 2010

Stiffness to Weight: Axial, points		14
Stiffness to Weight: Axial, points		12

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

Strength to Weight: Axial, points		22
Strength to Weight: Axial, points		17 to 30

Strength to Weight: Bending, points		20
Strength to Weight: Bending, points		17 to 25

Thermal Shock Resistance, points		14
Thermal Shock Resistance, points		16 to 29

Alloy Composition

Carbon (C), %		0 to 0.030
Carbon (C), %		0 to 0.050

Chromium (Cr), %		17.5 to 19
Chromium (Cr), %		0 to 0.3

Cobalt (Co), %		0
Cobalt (Co), %		0 to 0.5

Copper (Cu), %		2.8 to 4.0
Copper (Cu), %		0 to 0.3

Iron (Fe), %		53.7 to 61.3
Iron (Fe), %		48.2 to 53

Manganese (Mn), %		0 to 1.0
Manganese (Mn), %		0 to 0.8

Molybdenum (Mo), %		3.8 to 4.5
Molybdenum (Mo), %		0 to 0.3

Nickel (Ni), %		14.5 to 16.5
Nickel (Ni), %		47 to 49

Nitrogen (N), %		0.15 to 0.21
Nitrogen (N), %		0

Phosphorus (P), %		0 to 0.030
Phosphorus (P), %		0 to 0.010

Silicon (Si), %		0 to 1.0
Silicon (Si), %		0 to 0.5

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