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ACI-ASTM CA6N Steel vs. S42300 Stainless Steel

Both ACI-ASTM CA6N steel and S42300 stainless steel are iron alloys. Both are furnished in the heat treated (HT) condition. They have a moderately high 93% 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 S42300 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 17
9.1
Fatigue Strength, MPa 640
440
Poisson's Ratio 0.28
0.28
Reduction in Area, % 57
22
Shear Modulus, GPa 75
77
Tensile Strength: Ultimate (UTS), MPa 1080
1100
Tensile Strength: Yield (Proof), MPa 1060
850

Thermal Properties

Latent Heat of Fusion, J/g 280
270
Maximum Temperature: Corrosion, °C 390
380
Maximum Temperature: Mechanical, °C 740
750
Melting Completion (Liquidus), °C 1440
1470
Melting Onset (Solidus), °C 1400
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 23
25
Thermal Expansion, µm/m-K 9.9
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.6
4.5
Electrical Conductivity: Equal Weight (Specific), % IACS 3.0
5.2

Otherwise Unclassified Properties

Base Metal Price, % relative 11
9.5
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 2.5
3.2
Embodied Energy, MJ/kg 35
44
Embodied Water, L/kg 110
110

Common Calculations

PREN (Pitting Resistance) 12
21
Resilience: Ultimate (Unit Rupture Work), MJ/m3 180
93
Resilience: Unit (Modulus of Resilience), kJ/m3 2900
1840
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 38
39
Strength to Weight: Bending, points 30
30
Thermal Diffusivity, mm2/s 6.1
6.8
Thermal Shock Resistance, points 40
40

Alloy Composition

Carbon (C), % 0 to 0.060
0.27 to 0.32
Chromium (Cr), % 10.5 to 12.5
11 to 12
Iron (Fe), % 77.9 to 83.5
82 to 85.1
Manganese (Mn), % 0 to 0.5
1.0 to 1.4
Molybdenum (Mo), % 0
2.5 to 3.0
Nickel (Ni), % 6.0 to 8.0
0 to 0.5
Phosphorus (P), % 0 to 0.020
0 to 0.025
Silicon (Si), % 0 to 1.0
0 to 0.5
Sulfur (S), % 0 to 0.020
0 to 0.025
Vanadium (V), % 0
0.2 to 0.3