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ACI-ASTM CK20 Steel vs. S13800 Stainless Steel

Both ACI-ASTM CK20 steel and S13800 stainless steel are iron alloys. They have 74% of their average alloy composition in common. There are 32 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is ACI-ASTM CK20 steel and the bottom bar is S13800 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150
290 to 480
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 37
11 to 18
Fatigue Strength, MPa 220
410 to 870
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 78
77
Tensile Strength: Ultimate (UTS), MPa 530
980 to 1730
Tensile Strength: Yield (Proof), MPa 260
660 to 1580

Thermal Properties

Latent Heat of Fusion, J/g 310
280
Maximum Temperature: Corrosion, °C 440
390
Maximum Temperature: Mechanical, °C 1100
810
Melting Completion (Liquidus), °C 1400
1450
Melting Onset (Solidus), °C 1430
1410
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 14
16
Thermal Expansion, µm/m-K 15
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
2.3
Electrical Conductivity: Equal Weight (Specific), % IACS 2.3
2.6

Otherwise Unclassified Properties

Base Metal Price, % relative 25
15
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 4.4
3.4
Embodied Energy, MJ/kg 62
46
Embodied Water, L/kg 190
140

Common Calculations

PREN (Pitting Resistance) 26
21
Resilience: Ultimate (Unit Rupture Work), MJ/m3 160
150 to 190
Resilience: Unit (Modulus of Resilience), kJ/m3 170
1090 to 5490
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 19
35 to 61
Strength to Weight: Bending, points 19
28 to 41
Thermal Diffusivity, mm2/s 3.7
4.3
Thermal Shock Resistance, points 13
33 to 58

Alloy Composition

Aluminum (Al), % 0
0.9 to 1.4
Carbon (C), % 0 to 0.2
0 to 0.050
Chromium (Cr), % 23 to 27
12.3 to 13.2
Iron (Fe), % 46.7 to 58
73.6 to 77.3
Manganese (Mn), % 0 to 2.0
0 to 0.2
Molybdenum (Mo), % 0 to 0.5
2.0 to 3.0
Nickel (Ni), % 19 to 22
7.5 to 8.5
Nitrogen (N), % 0
0 to 0.010
Phosphorus (P), % 0 to 0.040
0 to 0.010
Silicon (Si), % 0 to 2.0
0 to 0.1
Sulfur (S), % 0 to 0.040
0 to 0.0080