ACI-ASTM CH20 Steel vs. Chromium 33

ACI-ASTM CH20 steel belongs to the iron alloys classification, while chromium 33 belongs to the otherwise unclassified metals. They have 71% of their average alloy composition in common. There are 21 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 ACI-ASTM CH20 steel and the bottom bar is chromium 33.

ACI-ASTM CH20 (SCS17, J93402) Cast 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, %		38
Elongation at Break, %		45

Poisson's Ratio		0.27
Poisson's Ratio		0.27

Shear Modulus, GPa		78
Shear Modulus, GPa		81

Tensile Strength: Ultimate (UTS), MPa		610
Tensile Strength: Ultimate (UTS), MPa		850

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

Thermal Properties

Latent Heat of Fusion, J/g		310
Latent Heat of Fusion, J/g		320

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

Thermal Expansion, µm/m-K		15
Thermal Expansion, µm/m-K		14

Otherwise Unclassified Properties

Base Metal Price, % relative		20
Base Metal Price, % relative		36

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

Embodied Carbon, kg CO₂/kg material		3.7
Embodied Carbon, kg CO₂/kg material		6.0

Embodied Energy, MJ/kg		53
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		300
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		25
Stiffness to Weight: Bending, points		25

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

Strength to Weight: Bending, points		21
Strength to Weight: Bending, points		25

Thermal Shock Resistance, points		15
Thermal Shock Resistance, points		21

Alloy Composition

Carbon (C), %		0 to 0.2
Carbon (C), %		0 to 0.015

Chromium (Cr), %		22 to 26
Chromium (Cr), %		31 to 35

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

Iron (Fe), %		54.7 to 66
Iron (Fe), %		25.7 to 37.9

Manganese (Mn), %		0 to 1.5
Manganese (Mn), %		0 to 2.0

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

Nickel (Ni), %		12 to 15
Nickel (Ni), %		30 to 33

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

Phosphorus (P), %		0 to 0.040
Phosphorus (P), %		0 to 0.020

Silicon (Si), %		0 to 2.0
Silicon (Si), %		0 to 0.5

Sulfur (S), %		0 to 0.040
Sulfur (S), %		0 to 0.010