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ACI-ASTM CA6N Steel vs. S38815 Stainless Steel

Both ACI-ASTM CA6N steel and S38815 stainless steel are iron alloys. They have 81% of their average alloy composition in common. There are 27 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is ACI-ASTM CA6N steel and the bottom bar is S38815 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 17
34
Fatigue Strength, MPa 640
230
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 75
74
Tensile Strength: Ultimate (UTS), MPa 1080
610
Tensile Strength: Yield (Proof), MPa 1060
290

Thermal Properties

Latent Heat of Fusion, J/g 280
370
Maximum Temperature: Corrosion, °C 390
400
Maximum Temperature: Mechanical, °C 740
860
Melting Completion (Liquidus), °C 1440
1360
Melting Onset (Solidus), °C 1400
1310
Specific Heat Capacity, J/kg-K 480
500
Thermal Expansion, µm/m-K 9.9
15

Otherwise Unclassified Properties

Base Metal Price, % relative 11
19
Density, g/cm3 7.8
7.5
Embodied Carbon, kg CO2/kg material 2.5
3.8
Embodied Energy, MJ/kg 35
54
Embodied Water, L/kg 110
140

Common Calculations

PREN (Pitting Resistance) 12
18
Resilience: Ultimate (Unit Rupture Work), MJ/m3 180
170
Resilience: Unit (Modulus of Resilience), kJ/m3 2900
220
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 38
22
Strength to Weight: Bending, points 30
21
Thermal Shock Resistance, points 40
15

Alloy Composition

Aluminum (Al), % 0
0 to 0.3
Carbon (C), % 0 to 0.060
0 to 0.030
Chromium (Cr), % 10.5 to 12.5
13 to 15
Copper (Cu), % 0
0.75 to 1.5
Iron (Fe), % 77.9 to 83.5
56.1 to 67
Manganese (Mn), % 0 to 0.5
0 to 2.0
Molybdenum (Mo), % 0
0.75 to 1.5
Nickel (Ni), % 6.0 to 8.0
13 to 17
Phosphorus (P), % 0 to 0.020
0 to 0.040
Silicon (Si), % 0 to 1.0
5.5 to 6.5
Sulfur (S), % 0 to 0.020
0 to 0.020