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ACI-ASTM CF20 Steel vs. S35000 Stainless Steel

Both ACI-ASTM CF20 steel and S35000 stainless steel are iron alloys. They have a moderately high 91% of their average alloy composition in common. There are 31 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 CF20 steel and the bottom bar is S35000 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 50
2.3 to 14
Fatigue Strength, MPa 240
380 to 520
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
78
Tensile Strength: Ultimate (UTS), MPa 530
1300 to 1570
Tensile Strength: Yield (Proof), MPa 250
660 to 1160

Thermal Properties

Latent Heat of Fusion, J/g 300
280
Maximum Temperature: Corrosion, °C 420
410
Maximum Temperature: Mechanical, °C 970
900
Melting Completion (Liquidus), °C 1420
1460
Melting Onset (Solidus), °C 1410
1410
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 16
16
Thermal Expansion, µm/m-K 17
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 16
14
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 3.1
3.2
Embodied Energy, MJ/kg 44
44
Embodied Water, L/kg 150
130

Common Calculations

PREN (Pitting Resistance) 20
28
Resilience: Ultimate (Unit Rupture Work), MJ/m3 220
28 to 170
Resilience: Unit (Modulus of Resilience), kJ/m3 160
1070 to 3360
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 19
46 to 56
Strength to Weight: Bending, points 19
34 to 38
Thermal Diffusivity, mm2/s 4.3
4.4
Thermal Shock Resistance, points 11
42 to 51

Alloy Composition

Carbon (C), % 0 to 0.2
0.070 to 0.11
Chromium (Cr), % 18 to 21
16 to 17
Iron (Fe), % 64.2 to 74
72.7 to 76.9
Manganese (Mn), % 0 to 1.5
0.5 to 1.3
Molybdenum (Mo), % 0
2.5 to 3.2
Nickel (Ni), % 8.0 to 11
4.0 to 5.0
Nitrogen (N), % 0
0.070 to 0.13
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 2.0
0 to 0.5
Sulfur (S), % 0 to 0.040
0 to 0.030