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ACI-ASTM CA6N Steel vs. S32550 Stainless Steel

Both ACI-ASTM CA6N steel and S32550 stainless steel are iron alloys. They have 80% 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 CA6N steel and the bottom bar is S32550 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 17
21
Fatigue Strength, MPa 640
400
Poisson's Ratio 0.28
0.27
Reduction in Area, % 57
57
Shear Modulus, GPa 75
80
Tensile Strength: Ultimate (UTS), MPa 1080
860
Tensile Strength: Yield (Proof), MPa 1060
620

Thermal Properties

Latent Heat of Fusion, J/g 280
300
Maximum Temperature: Corrosion, °C 390
450
Maximum Temperature: Mechanical, °C 740
1100
Melting Completion (Liquidus), °C 1440
1440
Melting Onset (Solidus), °C 1400
1390
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 23
16
Thermal Expansion, µm/m-K 9.9
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.6
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 3.0
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 11
20
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 2.5
3.8
Embodied Energy, MJ/kg 35
53
Embodied Water, L/kg 110
180

Common Calculations

PREN (Pitting Resistance) 12
40
Resilience: Ultimate (Unit Rupture Work), MJ/m3 180
160
Resilience: Unit (Modulus of Resilience), kJ/m3 2900
940
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 38
31
Strength to Weight: Bending, points 30
26
Thermal Diffusivity, mm2/s 6.1
4.4
Thermal Shock Resistance, points 40
23

Alloy Composition

Carbon (C), % 0 to 0.060
0 to 0.040
Chromium (Cr), % 10.5 to 12.5
24 to 27
Copper (Cu), % 0
1.5 to 2.5
Iron (Fe), % 77.9 to 83.5
57.2 to 67
Manganese (Mn), % 0 to 0.5
0 to 1.5
Molybdenum (Mo), % 0
2.9 to 3.9
Nickel (Ni), % 6.0 to 8.0
4.5 to 6.5
Nitrogen (N), % 0
0.1 to 0.25
Phosphorus (P), % 0 to 0.020
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.020
0 to 0.030