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ACI-ASTM CA40 Steel vs. N08020 Stainless Steel

Both ACI-ASTM CA40 steel and N08020 stainless steel are iron alloys. They have 52% of their average alloy composition in common. There are 31 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 N08020 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 10
15 to 34
Fatigue Strength, MPa 460
210 to 240
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
77
Tensile Strength: Ultimate (UTS), MPa 910
610 to 620
Tensile Strength: Yield (Proof), MPa 860
270 to 420

Thermal Properties

Latent Heat of Fusion, J/g 280
300
Maximum Temperature: Corrosion, °C 390
490
Maximum Temperature: Mechanical, °C 750
1100
Melting Completion (Liquidus), °C 1440
1410
Melting Onset (Solidus), °C 1500
1360
Specific Heat Capacity, J/kg-K 480
460
Thermal Conductivity, W/m-K 25
12
Thermal Expansion, µm/m-K 10
15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.0
1.6
Electrical Conductivity: Equal Weight (Specific), % IACS 3.5
1.8

Otherwise Unclassified Properties

Base Metal Price, % relative 7.5
38
Density, g/cm3 7.7
8.2
Embodied Carbon, kg CO2/kg material 2.0
6.6
Embodied Energy, MJ/kg 28
92
Embodied Water, L/kg 100
220

Common Calculations

PREN (Pitting Resistance) 14
28
Resilience: Ultimate (Unit Rupture Work), MJ/m3 89
83 to 170
Resilience: Unit (Modulus of Resilience), kJ/m3 1910
180 to 440
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 33
21
Strength to Weight: Bending, points 27
20
Thermal Diffusivity, mm2/s 6.7
3.2
Thermal Shock Resistance, points 33
15

Alloy Composition

Carbon (C), % 0.2 to 0.4
0 to 0.070
Chromium (Cr), % 11.5 to 14
19 to 21
Copper (Cu), % 0
3.0 to 4.0
Iron (Fe), % 81.5 to 88.3
29.9 to 44
Manganese (Mn), % 0 to 1.0
0 to 2.0
Molybdenum (Mo), % 0 to 0.5
2.0 to 3.0
Nickel (Ni), % 0 to 1.0
32 to 38
Niobium (Nb), % 0
0 to 1.0
Phosphorus (P), % 0 to 0.040
0 to 0.045
Silicon (Si), % 0 to 1.5
0 to 1.0
Sulfur (S), % 0 to 0.040
0 to 0.035