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ACI-ASTM CA6N Steel vs. S31266 Stainless Steel

Both ACI-ASTM CA6N steel and S31266 stainless steel are iron alloys. They have 59% of their average alloy composition in common. There are 32 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is ACI-ASTM CA6N steel and the bottom bar is S31266 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
210
Elongation at Break, % 17
40
Fatigue Strength, MPa 640
400
Poisson's Ratio 0.28
0.28
Reduction in Area, % 57
56
Shear Modulus, GPa 75
81
Tensile Strength: Ultimate (UTS), MPa 1080
860
Tensile Strength: Yield (Proof), MPa 1060
470

Thermal Properties

Latent Heat of Fusion, J/g 280
310
Maximum Temperature: Corrosion, °C 390
440
Maximum Temperature: Mechanical, °C 740
1100
Melting Completion (Liquidus), °C 1440
1470
Melting Onset (Solidus), °C 1400
1420
Specific Heat Capacity, J/kg-K 480
460
Thermal Conductivity, W/m-K 23
12
Thermal Expansion, µm/m-K 9.9
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.6
1.8
Electrical Conductivity: Equal Weight (Specific), % IACS 3.0
2.0

Otherwise Unclassified Properties

Base Metal Price, % relative 11
37
Density, g/cm3 7.8
8.2
Embodied Carbon, kg CO2/kg material 2.5
6.5
Embodied Energy, MJ/kg 35
89
Embodied Water, L/kg 110
220

Common Calculations

PREN (Pitting Resistance) 12
54
Resilience: Ultimate (Unit Rupture Work), MJ/m3 180
290
Resilience: Unit (Modulus of Resilience), kJ/m3 2900
540
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 38
29
Strength to Weight: Bending, points 30
24
Thermal Diffusivity, mm2/s 6.1
3.1
Thermal Shock Resistance, points 40
18

Alloy Composition

Carbon (C), % 0 to 0.060
0 to 0.030
Chromium (Cr), % 10.5 to 12.5
23 to 25
Copper (Cu), % 0
1.0 to 2.5
Iron (Fe), % 77.9 to 83.5
34.1 to 46
Manganese (Mn), % 0 to 0.5
2.0 to 4.0
Molybdenum (Mo), % 0
5.2 to 6.2
Nickel (Ni), % 6.0 to 8.0
21 to 24
Nitrogen (N), % 0
0.35 to 0.6
Phosphorus (P), % 0 to 0.020
0 to 0.035
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.020
0 to 0.020
Tungsten (W), % 0
1.5 to 2.5