S31727 Stainless Steel vs. Chromium 33

S31727 stainless steel belongs to the iron alloys classification, while chromium 33 belongs to the otherwise unclassified metals. They have 69% of their average alloy composition in common. There are 21 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is S31727 stainless steel and the bottom bar is chromium 33.

UNS S31727 Stainless Steel Chromium Alloy 33 (R20033)

Metric UnitsUS Customary Units

Mechanical Properties

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

Elongation at Break, %		40
Elongation at Break, %		45

Poisson's Ratio		0.28
Poisson's Ratio		0.27

Shear Modulus, GPa		78
Shear Modulus, GPa		81

Tensile Strength: Ultimate (UTS), MPa		630
Tensile Strength: Ultimate (UTS), MPa		850

Tensile Strength: Yield (Proof), MPa		270
Tensile Strength: Yield (Proof), MPa		430

Thermal Properties

Latent Heat of Fusion, J/g		290
Latent Heat of Fusion, J/g		320

Specific Heat Capacity, J/kg-K		470
Specific Heat Capacity, J/kg-K		480

Thermal Expansion, µm/m-K		16
Thermal Expansion, µm/m-K		14

Otherwise Unclassified Properties

Base Metal Price, % relative		24
Base Metal Price, % relative		36

Density, g/cm³		8.0
Density, g/cm³		7.9

Embodied Carbon, kg CO₂/kg material		4.7
Embodied Carbon, kg CO₂/kg material		6.0

Embodied Energy, MJ/kg		64
Embodied Energy, MJ/kg		84

Embodied Water, L/kg		180
Embodied Water, L/kg		250

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m³		200
Resilience: Ultimate (Unit Rupture Work), MJ/m³		320

Resilience: Unit (Modulus of Resilience), kJ/m³		190
Resilience: Unit (Modulus of Resilience), kJ/m³		450

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

Stiffness to Weight: Bending, points		24
Stiffness to Weight: Bending, points		25

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

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

Thermal Shock Resistance, points		14
Thermal Shock Resistance, points		21

Alloy Composition

Carbon (C), %		0 to 0.030
Carbon (C), %		0 to 0.015

Chromium (Cr), %		17.5 to 19
Chromium (Cr), %		31 to 35

Copper (Cu), %		2.8 to 4.0
Copper (Cu), %		0.3 to 1.2

Iron (Fe), %		53.7 to 61.3
Iron (Fe), %		25.7 to 37.9

Manganese (Mn), %		0 to 1.0
Manganese (Mn), %		0 to 2.0

Molybdenum (Mo), %		3.8 to 4.5
Molybdenum (Mo), %		0.5 to 2.0

Nickel (Ni), %		14.5 to 16.5
Nickel (Ni), %		30 to 33

Nitrogen (N), %		0.15 to 0.21
Nitrogen (N), %		0.35 to 0.6

Phosphorus (P), %		0 to 0.030
Phosphorus (P), %		0 to 0.020

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

Sulfur (S), %		0 to 0.030
Sulfur (S), %		0 to 0.010