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ACI-ASTM CA40 Steel vs. S44735 Stainless Steel

Both ACI-ASTM CA40 steel and S44735 stainless steel are iron alloys. They have 79% of their average alloy composition in common. There are 28 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is ACI-ASTM CA40 steel and the bottom bar is S44735 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 310
220
Elastic (Young's, Tensile) Modulus, GPa 190
210
Elongation at Break, % 10
21
Fatigue Strength, MPa 460
300
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 76
82
Tensile Strength: Ultimate (UTS), MPa 910
630
Tensile Strength: Yield (Proof), MPa 860
460

Thermal Properties

Latent Heat of Fusion, J/g 280
310
Maximum Temperature: Corrosion, °C 390
650
Maximum Temperature: Mechanical, °C 750
1100
Melting Completion (Liquidus), °C 1440
1460
Melting Onset (Solidus), °C 1500
1420
Specific Heat Capacity, J/kg-K 480
480
Thermal Expansion, µm/m-K 10
11

Otherwise Unclassified Properties

Base Metal Price, % relative 7.5
21
Density, g/cm3 7.7
7.7
Embodied Carbon, kg CO2/kg material 2.0
4.4
Embodied Energy, MJ/kg 28
61
Embodied Water, L/kg 100
180

Common Calculations

PREN (Pitting Resistance) 14
42
Resilience: Ultimate (Unit Rupture Work), MJ/m3 89
120
Resilience: Unit (Modulus of Resilience), kJ/m3 1910
520
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 25
26
Strength to Weight: Axial, points 33
23
Strength to Weight: Bending, points 27
21
Thermal Shock Resistance, points 33
20

Alloy Composition

Carbon (C), % 0.2 to 0.4
0 to 0.030
Chromium (Cr), % 11.5 to 14
28 to 30
Iron (Fe), % 81.5 to 88.3
60.7 to 68.4
Manganese (Mn), % 0 to 1.0
0 to 1.0
Molybdenum (Mo), % 0 to 0.5
3.6 to 4.2
Nickel (Ni), % 0 to 1.0
0 to 1.0
Niobium (Nb), % 0
0.2 to 1.0
Nitrogen (N), % 0
0 to 0.045
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 1.5
0 to 1.0
Sulfur (S), % 0 to 0.040
0 to 0.030
Titanium (Ti), % 0
0.2 to 1.0