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ACI-ASTM CA40 Steel vs. S32760 Stainless Steel

Both ACI-ASTM CA40 steel and S32760 stainless steel are iron alloys. They have 76% of their average alloy composition in common. There are 32 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 CA40 steel and the bottom bar is S32760 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 310
250
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 10
28
Fatigue Strength, MPa 460
450
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 76
80
Tensile Strength: Ultimate (UTS), MPa 910
850
Tensile Strength: Yield (Proof), MPa 860
620

Thermal Properties

Latent Heat of Fusion, J/g 280
300
Maximum Temperature: Corrosion, °C 390
450
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
470
Thermal Conductivity, W/m-K 25
15
Thermal Expansion, µm/m-K 10
13

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
22
Density, g/cm3 7.7
7.9
Embodied Carbon, kg CO2/kg material 2.0
4.1
Embodied Energy, MJ/kg 28
57
Embodied Water, L/kg 100
180

Common Calculations

PREN (Pitting Resistance) 14
42
Resilience: Ultimate (Unit Rupture Work), MJ/m3 89
220
Resilience: Unit (Modulus of Resilience), kJ/m3 1910
930
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 33
30
Strength to Weight: Bending, points 27
25
Thermal Diffusivity, mm2/s 6.7
4.0
Thermal Shock Resistance, points 33
23

Alloy Composition

Carbon (C), % 0.2 to 0.4
0 to 0.030
Chromium (Cr), % 11.5 to 14
24 to 26
Copper (Cu), % 0
0.5 to 1.0
Iron (Fe), % 81.5 to 88.3
57.6 to 65.8
Manganese (Mn), % 0 to 1.0
0 to 1.0
Molybdenum (Mo), % 0 to 0.5
3.0 to 4.0
Nickel (Ni), % 0 to 1.0
6.0 to 8.0
Nitrogen (N), % 0
0.2 to 0.3
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 0.010
Tungsten (W), % 0
0.5 to 1.0