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ACI-ASTM CA40 Steel vs. N08366 Stainless Steel

Both ACI-ASTM CA40 steel and N08366 stainless steel are iron alloys. They have 61% 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 CA40 steel and the bottom bar is N08366 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 310
180
Elastic (Young's, Tensile) Modulus, GPa 190
210
Elongation at Break, % 10
34
Fatigue Strength, MPa 460
190
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
80
Tensile Strength: Ultimate (UTS), MPa 910
590
Tensile Strength: Yield (Proof), MPa 860
240

Thermal Properties

Latent Heat of Fusion, J/g 280
310
Maximum Temperature: Corrosion, °C 390
430
Maximum Temperature: Mechanical, °C 750
1100
Melting Completion (Liquidus), °C 1440
1460
Melting Onset (Solidus), °C 1500
1410
Specific Heat Capacity, J/kg-K 480
460
Thermal Conductivity, W/m-K 25
13
Thermal Expansion, µm/m-K 10
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.0
1.8
Electrical Conductivity: Equal Weight (Specific), % IACS 3.5
2.0

Otherwise Unclassified Properties

Base Metal Price, % relative 7.5
33
Density, g/cm3 7.7
8.1
Embodied Carbon, kg CO2/kg material 2.0
6.2
Embodied Energy, MJ/kg 28
84
Embodied Water, L/kg 100
200

Common Calculations

PREN (Pitting Resistance) 14
42
Resilience: Ultimate (Unit Rupture Work), MJ/m3 89
160
Resilience: Unit (Modulus of Resilience), kJ/m3 1910
150
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 33
20
Strength to Weight: Bending, points 27
19
Thermal Diffusivity, mm2/s 6.7
3.4
Thermal Shock Resistance, points 33
13

Alloy Composition

Carbon (C), % 0.2 to 0.4
0 to 0.035
Chromium (Cr), % 11.5 to 14
20 to 22
Iron (Fe), % 81.5 to 88.3
42.4 to 50.5
Manganese (Mn), % 0 to 1.0
0 to 2.0
Molybdenum (Mo), % 0 to 0.5
6.0 to 7.0
Nickel (Ni), % 0 to 1.0
23.5 to 25.5
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 1.5
0 to 1.0
Sulfur (S), % 0 to 0.040
0 to 0.030