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ACI-ASTM CK20 Steel vs. S30601 Stainless Steel

Both ACI-ASTM CK20 steel and S30601 stainless steel are iron alloys. They have 89% of their average alloy composition in common. There are 28 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is ACI-ASTM CK20 steel and the bottom bar is S30601 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150
190
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 37
37
Fatigue Strength, MPa 220
250
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 78
75
Tensile Strength: Ultimate (UTS), MPa 530
660
Tensile Strength: Yield (Proof), MPa 260
300

Thermal Properties

Latent Heat of Fusion, J/g 310
370
Maximum Temperature: Corrosion, °C 440
410
Maximum Temperature: Mechanical, °C 1100
950
Melting Completion (Liquidus), °C 1400
1360
Melting Onset (Solidus), °C 1430
1310
Specific Heat Capacity, J/kg-K 480
500
Thermal Expansion, µm/m-K 15
15

Otherwise Unclassified Properties

Base Metal Price, % relative 25
20
Density, g/cm3 7.8
7.6
Embodied Carbon, kg CO2/kg material 4.4
3.9
Embodied Energy, MJ/kg 62
55
Embodied Water, L/kg 190
150

Common Calculations

PREN (Pitting Resistance) 26
18
Resilience: Ultimate (Unit Rupture Work), MJ/m3 160
200
Resilience: Unit (Modulus of Resilience), kJ/m3 170
230
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 19
24
Strength to Weight: Bending, points 19
22
Thermal Shock Resistance, points 13
16

Alloy Composition

Carbon (C), % 0 to 0.2
0 to 0.015
Chromium (Cr), % 23 to 27
17 to 18
Copper (Cu), % 0
0 to 0.35
Iron (Fe), % 46.7 to 58
56.9 to 60.5
Manganese (Mn), % 0 to 2.0
0.5 to 0.8
Molybdenum (Mo), % 0 to 0.5
0 to 0.2
Nickel (Ni), % 19 to 22
17 to 18
Nitrogen (N), % 0
0 to 0.050
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 0 to 2.0
5.0 to 5.6
Sulfur (S), % 0 to 0.040
0 to 0.013