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Chromium 33 vs. S21640 Stainless Steel

Chromium 33 belongs to the otherwise unclassified metals classification, while S21640 stainless steel belongs to the iron alloys. They have 58% 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 S21640 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 45
46
Poisson's Ratio 0.27
0.28
Shear Modulus, GPa 81
78
Tensile Strength: Ultimate (UTS), MPa 850
740
Tensile Strength: Yield (Proof), MPa 430
350

Thermal Properties

Latent Heat of Fusion, J/g 320
290
Specific Heat Capacity, J/kg-K 480
480
Thermal Expansion, µm/m-K 14
17

Otherwise Unclassified Properties

Base Metal Price, % relative 36
17
Density, g/cm3 7.9
7.7
Embodied Carbon, kg CO2/kg material 6.0
3.6
Embodied Energy, MJ/kg 84
51
Embodied Water, L/kg 250
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 320
280
Resilience: Unit (Modulus of Resilience), kJ/m3 450
300
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 30
27
Strength to Weight: Bending, points 25
23
Thermal Shock Resistance, points 21
16

Alloy Composition

Carbon (C), % 0 to 0.015
0 to 0.080
Chromium (Cr), % 31 to 35
17.5 to 19.5
Copper (Cu), % 0.3 to 1.2
0
Iron (Fe), % 25.7 to 37.9
63 to 74.3
Manganese (Mn), % 0 to 2.0
3.5 to 6.5
Molybdenum (Mo), % 0.5 to 2.0
0.5 to 2.0
Nickel (Ni), % 30 to 33
4.0 to 6.5
Niobium (Nb), % 0
0.1 to 1.0
Nitrogen (N), % 0.35 to 0.6
0.080 to 0.3
Phosphorus (P), % 0 to 0.020
0 to 0.060
Silicon (Si), % 0 to 0.5
0 to 1.0
Sulfur (S), % 0 to 0.010
0 to 0.030