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ACI-ASTM CA40 Steel vs. AISI 316L Stainless Steel

Both ACI-ASTM CA40 steel and AISI 316L stainless steel are iron alloys. They have 81% 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 AISI 316L stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 310
170 to 350
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 10
9.0 to 50
Fatigue Strength, MPa 460
170 to 450
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
78
Tensile Strength: Ultimate (UTS), MPa 910
530 to 1160
Tensile Strength: Yield (Proof), MPa 860
190 to 870

Thermal Properties

Latent Heat of Fusion, J/g 280
290
Maximum Temperature: Corrosion, °C 390
410
Maximum Temperature: Mechanical, °C 750
870
Melting Completion (Liquidus), °C 1440
1400
Melting Onset (Solidus), °C 1500
1380
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 25
15
Thermal Expansion, µm/m-K 10
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.0
2.3
Electrical Conductivity: Equal Weight (Specific), % IACS 3.5
2.6

Otherwise Unclassified Properties

Base Metal Price, % relative 7.5
19
Density, g/cm3 7.7
7.9
Embodied Carbon, kg CO2/kg material 2.0
3.9
Embodied Energy, MJ/kg 28
53
Embodied Water, L/kg 100
150

Common Calculations

PREN (Pitting Resistance) 14
26
Resilience: Ultimate (Unit Rupture Work), MJ/m3 89
77 to 230
Resilience: Unit (Modulus of Resilience), kJ/m3 1910
93 to 1880
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 33
19 to 41
Strength to Weight: Bending, points 27
18 to 31
Thermal Diffusivity, mm2/s 6.7
4.1
Thermal Shock Resistance, points 33
12 to 25

Alloy Composition

Carbon (C), % 0.2 to 0.4
0 to 0.030
Chromium (Cr), % 11.5 to 14
16 to 18
Iron (Fe), % 81.5 to 88.3
62 to 72
Manganese (Mn), % 0 to 1.0
0 to 2.0
Molybdenum (Mo), % 0 to 0.5
2.0 to 3.0
Nickel (Ni), % 0 to 1.0
10 to 14
Nitrogen (N), % 0
0 to 0.1
Phosphorus (P), % 0 to 0.040
0 to 0.045
Silicon (Si), % 0 to 1.5
0 to 0.75
Sulfur (S), % 0 to 0.040
0 to 0.030