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ACI-ASTM CA40 Steel vs. S32654 Stainless Steel

Both ACI-ASTM CA40 steel and S32654 stainless steel are iron alloys. They have 56% 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 S32654 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 310
220
Elastic (Young's, Tensile) Modulus, GPa 190
210
Elongation at Break, % 10
45
Fatigue Strength, MPa 460
450
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
82
Tensile Strength: Ultimate (UTS), MPa 910
850
Tensile Strength: Yield (Proof), MPa 860
490

Thermal Properties

Latent Heat of Fusion, J/g 280
310
Maximum Temperature: Corrosion, °C 390
440
Maximum Temperature: Mechanical, °C 750
1100
Melting Completion (Liquidus), °C 1440
1450
Melting Onset (Solidus), °C 1500
1410
Specific Heat Capacity, J/kg-K 480
460
Thermal Conductivity, W/m-K 25
11
Thermal Expansion, µm/m-K 10
15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.0
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 3.5
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 7.5
34
Density, g/cm3 7.7
8.0
Embodied Carbon, kg CO2/kg material 2.0
6.4
Embodied Energy, MJ/kg 28
87
Embodied Water, L/kg 100
220

Common Calculations

PREN (Pitting Resistance) 14
57
Resilience: Ultimate (Unit Rupture Work), MJ/m3 89
330
Resilience: Unit (Modulus of Resilience), kJ/m3 1910
570
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 33
29
Strength to Weight: Bending, points 27
25
Thermal Diffusivity, mm2/s 6.7
2.9
Thermal Shock Resistance, points 33
19

Alloy Composition

Carbon (C), % 0.2 to 0.4
0 to 0.020
Chromium (Cr), % 11.5 to 14
24 to 25
Copper (Cu), % 0
0.3 to 0.6
Iron (Fe), % 81.5 to 88.3
38.3 to 45.3
Manganese (Mn), % 0 to 1.0
2.0 to 4.0
Molybdenum (Mo), % 0 to 0.5
7.0 to 8.0
Nickel (Ni), % 0 to 1.0
21 to 23
Nitrogen (N), % 0
0.45 to 0.55
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 0 to 1.5
0 to 0.5
Sulfur (S), % 0 to 0.040
0 to 0.0050