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ACI-ASTM CF20 Steel vs. S32506 Stainless Steel

Both ACI-ASTM CF20 steel and S32506 stainless steel are iron alloys. They have a moderately high 91% of their average alloy composition in common. There are 32 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 CF20 steel and the bottom bar is S32506 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160
270
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 50
21
Fatigue Strength, MPa 240
330
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 77
81
Tensile Strength: Ultimate (UTS), MPa 530
710
Tensile Strength: Yield (Proof), MPa 250
500

Thermal Properties

Latent Heat of Fusion, J/g 300
300
Maximum Temperature: Corrosion, °C 420
450
Maximum Temperature: Mechanical, °C 970
1100
Melting Completion (Liquidus), °C 1420
1450
Melting Onset (Solidus), °C 1410
1400
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 16
16
Thermal Expansion, µm/m-K 17
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.3
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 16
20
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 3.1
3.9
Embodied Energy, MJ/kg 44
54
Embodied Water, L/kg 150
180

Common Calculations

PREN (Pitting Resistance) 20
38
Resilience: Ultimate (Unit Rupture Work), MJ/m3 220
130
Resilience: Unit (Modulus of Resilience), kJ/m3 160
620
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 19
25
Strength to Weight: Bending, points 19
23
Thermal Diffusivity, mm2/s 4.3
4.3
Thermal Shock Resistance, points 11
19

Alloy Composition

Carbon (C), % 0 to 0.2
0 to 0.030
Chromium (Cr), % 18 to 21
24 to 26
Iron (Fe), % 64.2 to 74
60.8 to 67.4
Manganese (Mn), % 0 to 1.5
0 to 1.0
Molybdenum (Mo), % 0
3.0 to 3.5
Nickel (Ni), % 8.0 to 11
5.5 to 7.2
Nitrogen (N), % 0
0.080 to 0.2
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 2.0
0 to 0.9
Sulfur (S), % 0 to 0.040
0 to 0.015
Tungsten (W), % 0
0.050 to 0.3