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AISI 316 Stainless Steel vs. ACI-ASTM CA40 Steel

Both AISI 316 stainless steel and ACI-ASTM CA40 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 (4, in this case) are not shown.

For each property being compared, the top bar is AISI 316 stainless steel and the bottom bar is ACI-ASTM CA40 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160 to 360
310
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 8.0 to 55
10
Fatigue Strength, MPa 210 to 430
460
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 78
76
Tensile Strength: Ultimate (UTS), MPa 520 to 1180
910
Tensile Strength: Yield (Proof), MPa 230 to 850
860

Thermal Properties

Latent Heat of Fusion, J/g 290
280
Maximum Temperature: Corrosion, °C 410
390
Maximum Temperature: Mechanical, °C 590
750
Melting Completion (Liquidus), °C 1400
1440
Melting Onset (Solidus), °C 1380
1500
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 15
25
Thermal Expansion, µm/m-K 16
10

Electrical Properties

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

Otherwise Unclassified Properties

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

Common Calculations

PREN (Pitting Resistance) 26
14
Resilience: Ultimate (Unit Rupture Work), MJ/m3 85 to 260
89
Resilience: Unit (Modulus of Resilience), kJ/m3 130 to 1820
1910
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 18 to 41
33
Strength to Weight: Bending, points 18 to 31
27
Thermal Diffusivity, mm2/s 4.1
6.7
Thermal Shock Resistance, points 11 to 26
33

Alloy Composition

Carbon (C), % 0 to 0.080
0.2 to 0.4
Chromium (Cr), % 16 to 18
11.5 to 14
Iron (Fe), % 62 to 72
81.5 to 88.3
Manganese (Mn), % 0 to 2.0
0 to 1.0
Molybdenum (Mo), % 2.0 to 3.0
0 to 0.5
Nickel (Ni), % 10 to 14
0 to 1.0
Nitrogen (N), % 0 to 0.1
0
Phosphorus (P), % 0 to 0.045
0 to 0.040
Silicon (Si), % 0 to 0.75
0 to 1.5
Sulfur (S), % 0 to 0.030
0 to 0.040