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ACI-ASTM CA40 Steel vs. N08028 Stainless Steel

Both ACI-ASTM CA40 steel and N08028 stainless steel are iron alloys. They have 49% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is ACI-ASTM CA40 steel and the bottom bar is N08028 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 310
180
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 10
45
Fatigue Strength, MPa 460
220
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
80
Tensile Strength: Ultimate (UTS), MPa 910
570
Tensile Strength: Yield (Proof), MPa 860
240

Thermal Properties

Latent Heat of Fusion, J/g 280
320
Maximum Temperature: Corrosion, °C 390
460
Maximum Temperature: Mechanical, °C 750
1100
Melting Completion (Liquidus), °C 1440
1420
Melting Onset (Solidus), °C 1500
1370
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 25
12
Thermal Expansion, µm/m-K 10
16

Otherwise Unclassified Properties

Base Metal Price, % relative 7.5
37
Density, g/cm3 7.7
8.1
Embodied Carbon, kg CO2/kg material 2.0
6.4
Embodied Energy, MJ/kg 28
89
Embodied Water, L/kg 100
240

Common Calculations

PREN (Pitting Resistance) 14
39
Resilience: Ultimate (Unit Rupture Work), MJ/m3 89
210
Resilience: Unit (Modulus of Resilience), kJ/m3 1910
140
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 33
19
Strength to Weight: Bending, points 27
19
Thermal Diffusivity, mm2/s 6.7
3.2
Thermal Shock Resistance, points 33
12

Alloy Composition

Carbon (C), % 0.2 to 0.4
0 to 0.030
Chromium (Cr), % 11.5 to 14
26 to 28
Copper (Cu), % 0
0.6 to 1.4
Iron (Fe), % 81.5 to 88.3
29 to 40.4
Manganese (Mn), % 0 to 1.0
0 to 2.5
Molybdenum (Mo), % 0 to 0.5
3.0 to 4.0
Nickel (Ni), % 0 to 1.0
30 to 34
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 0 to 1.5
0 to 1.0
Sulfur (S), % 0 to 0.040
0 to 0.030