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ACI-ASTM CA40F Steel vs. S44626 Stainless Steel

Both ACI-ASTM CA40F steel and S44626 stainless steel are iron alloys. They have 85% 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 CA40F steel and the bottom bar is S44626 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 230
190
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 13
23
Fatigue Strength, MPa 320
230
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 76
80
Tensile Strength: Ultimate (UTS), MPa 770
540
Tensile Strength: Yield (Proof), MPa 550
350

Thermal Properties

Latent Heat of Fusion, J/g 280
300
Maximum Temperature: Corrosion, °C 390
560
Maximum Temperature: Mechanical, °C 750
1100
Melting Completion (Liquidus), °C 1430
1440
Melting Onset (Solidus), °C 1390
1390
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 27
17
Thermal Expansion, µm/m-K 10
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.0
2.3
Electrical Conductivity: Equal Weight (Specific), % IACS 3.5
2.7

Otherwise Unclassified Properties

Base Metal Price, % relative 7.5
14
Density, g/cm3 7.7
7.7
Embodied Carbon, kg CO2/kg material 2.0
2.9
Embodied Energy, MJ/kg 28
42
Embodied Water, L/kg 100
160

Common Calculations

PREN (Pitting Resistance) 14
30
Resilience: Ultimate (Unit Rupture Work), MJ/m3 94
110
Resilience: Unit (Modulus of Resilience), kJ/m3 790
300
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 25
26
Strength to Weight: Axial, points 28
19
Strength to Weight: Bending, points 24
19
Thermal Diffusivity, mm2/s 7.2
4.6
Thermal Shock Resistance, points 28
18

Alloy Composition

Carbon (C), % 0.2 to 0.4
0 to 0.060
Chromium (Cr), % 11.5 to 14
25 to 27
Copper (Cu), % 0
0 to 0.2
Iron (Fe), % 81.6 to 88.3
68.1 to 74.1
Manganese (Mn), % 0 to 1.0
0 to 0.75
Molybdenum (Mo), % 0 to 0.5
0.75 to 1.5
Nickel (Ni), % 0 to 1.0
0 to 0.5
Nitrogen (N), % 0
0 to 0.040
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 1.5
0 to 0.75
Sulfur (S), % 0.2 to 0.4
0 to 0.020
Titanium (Ti), % 0
0.2 to 1.0