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ACI-ASTM CA40 Steel vs. S35045 Stainless Steel

Both ACI-ASTM CA40 steel and S35045 stainless steel are iron alloys. They have 50% 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 S35045 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 10
39
Fatigue Strength, MPa 460
170
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
78
Tensile Strength: Ultimate (UTS), MPa 910
540
Tensile Strength: Yield (Proof), MPa 860
190

Thermal Properties

Latent Heat of Fusion, J/g 280
310
Maximum Temperature: Corrosion, °C 390
520
Maximum Temperature: Mechanical, °C 750
1100
Melting Completion (Liquidus), °C 1440
1390
Melting Onset (Solidus), °C 1500
1340
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 25
12
Thermal Expansion, µm/m-K 10
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.0
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 3.5
2.0

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
5.8
Embodied Energy, MJ/kg 28
83
Embodied Water, L/kg 100
230

Common Calculations

PREN (Pitting Resistance) 14
27
Resilience: Ultimate (Unit Rupture Work), MJ/m3 89
170
Resilience: Unit (Modulus of Resilience), kJ/m3 1910
94
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

Aluminum (Al), % 0
0.15 to 0.6
Carbon (C), % 0.2 to 0.4
0.060 to 0.1
Chromium (Cr), % 11.5 to 14
25 to 29
Copper (Cu), % 0
0 to 0.75
Iron (Fe), % 81.5 to 88.3
29.4 to 42.6
Manganese (Mn), % 0 to 1.0
0 to 1.5
Molybdenum (Mo), % 0 to 0.5
0
Nickel (Ni), % 0 to 1.0
32 to 37
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 0.015
Titanium (Ti), % 0
0.15 to 0.6