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ACI-ASTM CK20 Steel vs. S42010 Stainless Steel

Both ACI-ASTM CK20 steel and S42010 stainless steel are iron alloys. They have 69% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is ACI-ASTM CK20 steel and the bottom bar is S42010 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 37
18
Fatigue Strength, MPa 220
220
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 78
76
Tensile Strength: Ultimate (UTS), MPa 530
590
Tensile Strength: Yield (Proof), MPa 260
350

Thermal Properties

Latent Heat of Fusion, J/g 310
280
Maximum Temperature: Corrosion, °C 440
390
Maximum Temperature: Mechanical, °C 1100
800
Melting Completion (Liquidus), °C 1400
1440
Melting Onset (Solidus), °C 1430
1400
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 14
29
Thermal Expansion, µm/m-K 15
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
2.7
Electrical Conductivity: Equal Weight (Specific), % IACS 2.3
3.2

Otherwise Unclassified Properties

Base Metal Price, % relative 25
8.5
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 4.4
2.2
Embodied Energy, MJ/kg 62
30
Embodied Water, L/kg 190
110

Common Calculations

PREN (Pitting Resistance) 26
16
Resilience: Ultimate (Unit Rupture Work), MJ/m3 160
95
Resilience: Unit (Modulus of Resilience), kJ/m3 170
310
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 19
21
Strength to Weight: Bending, points 19
20
Thermal Diffusivity, mm2/s 3.7
7.9
Thermal Shock Resistance, points 13
21

Alloy Composition

Carbon (C), % 0 to 0.2
0.15 to 0.3
Chromium (Cr), % 23 to 27
13.5 to 15
Iron (Fe), % 46.7 to 58
80.9 to 85.6
Manganese (Mn), % 0 to 2.0
0 to 1.0
Molybdenum (Mo), % 0 to 0.5
0.4 to 0.85
Nickel (Ni), % 19 to 22
0.35 to 0.85
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 2.0
0 to 1.0
Sulfur (S), % 0 to 0.040
0 to 0.030