Chromium 33 vs. AISI 321 Stainless Steel

Chromium 33 belongs to the otherwise unclassified metals classification, while AISI 321 stainless steel belongs to the iron alloys. They have 62% of their average alloy composition in common. There are 21 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown.

For each property being compared, the top bar is chromium 33 and the bottom bar is AISI 321 stainless steel.

Chromium Alloy 33 (R20033)AISI 321 (S32100) Stainless Steel

Metric UnitsUS Customary Units

Mechanical Properties

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

Elongation at Break, %		45
Elongation at Break, %		34 to 50

Poisson's Ratio		0.27
Poisson's Ratio		0.28

Shear Modulus, GPa		81
Shear Modulus, GPa		77

Tensile Strength: Ultimate (UTS), MPa		850
Tensile Strength: Ultimate (UTS), MPa		590 to 690

Tensile Strength: Yield (Proof), MPa		430
Tensile Strength: Yield (Proof), MPa		220 to 350

Thermal Properties

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

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

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

Otherwise Unclassified Properties

Base Metal Price, % relative		36
Base Metal Price, % relative		16

Density, g/cm³		7.9
Density, g/cm³		7.8

Embodied Carbon, kg CO₂/kg material		6.0
Embodied Carbon, kg CO₂/kg material		3.2

Embodied Energy, MJ/kg		84
Embodied Energy, MJ/kg		45

Embodied Water, L/kg		250
Embodied Water, L/kg		140

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m³		320
Resilience: Ultimate (Unit Rupture Work), MJ/m³		190 to 230

Resilience: Unit (Modulus of Resilience), kJ/m³		450
Resilience: Unit (Modulus of Resilience), kJ/m³		130 to 310

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

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

Strength to Weight: Axial, points		30
Strength to Weight: Axial, points		21 to 25

Strength to Weight: Bending, points		25
Strength to Weight: Bending, points		20 to 22

Thermal Shock Resistance, points		21
Thermal Shock Resistance, points		13 to 15

Alloy Composition

Carbon (C), %		0 to 0.015
Carbon (C), %		0 to 0.080

Chromium (Cr), %		31 to 35
Chromium (Cr), %		17 to 19

Copper (Cu), %		0.3 to 1.2
Copper (Cu), %		0

Iron (Fe), %		25.7 to 37.9
Iron (Fe), %		65.3 to 74

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

Molybdenum (Mo), %		0.5 to 2.0
Molybdenum (Mo), %		0

Nickel (Ni), %		30 to 33
Nickel (Ni), %		9.0 to 12

Nitrogen (N), %		0.35 to 0.6
Nitrogen (N), %		0 to 0.1

Phosphorus (P), %		0 to 0.020
Phosphorus (P), %		0 to 0.045

Silicon (Si), %		0 to 0.5
Silicon (Si), %		0 to 0.75

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

Titanium (Ti), %		0
Titanium (Ti), %		0 to 0.7