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ACI-ASTM CT15C Steel vs. AISI 316N Stainless Steel

Both ACI-ASTM CT15C steel and AISI 316N stainless steel are iron alloys. They have 75% 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 CT15C steel and the bottom bar is AISI 316N stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 140
190 to 350
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 23
9.0 to 39
Fatigue Strength, MPa 130
230 to 450
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
78
Tensile Strength: Ultimate (UTS), MPa 500
620 to 1160
Tensile Strength: Yield (Proof), MPa 190
270 to 870

Thermal Properties

Latent Heat of Fusion, J/g 310
290
Maximum Temperature: Corrosion, °C 560
410
Maximum Temperature: Mechanical, °C 1080
940
Melting Completion (Liquidus), °C 1410
1440
Melting Onset (Solidus), °C 1360
1400
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 12
15
Thermal Expansion, µm/m-K 16
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.7
2.3
Electrical Conductivity: Equal Weight (Specific), % IACS 1.9
2.7

Otherwise Unclassified Properties

Base Metal Price, % relative 36
19
Density, g/cm3 8.0
7.9
Embodied Carbon, kg CO2/kg material 6.1
3.9
Embodied Energy, MJ/kg 88
53
Embodied Water, L/kg 190
150

Common Calculations

PREN (Pitting Resistance) 20
27
Resilience: Ultimate (Unit Rupture Work), MJ/m3 90
95 to 230
Resilience: Unit (Modulus of Resilience), kJ/m3 93
180 to 1880
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 17
22 to 41
Strength to Weight: Bending, points 17
20 to 31
Thermal Diffusivity, mm2/s 3.2
4.1
Thermal Shock Resistance, points 12
14 to 26

Alloy Composition

Carbon (C), % 0.050 to 0.15
0 to 0.080
Chromium (Cr), % 19 to 21
16 to 18
Iron (Fe), % 40.3 to 49.2
61.9 to 71.9
Manganese (Mn), % 0.15 to 1.5
0 to 2.0
Molybdenum (Mo), % 0
2.0 to 3.0
Nickel (Ni), % 31 to 34
10 to 14
Niobium (Nb), % 0.5 to 1.5
0
Nitrogen (N), % 0
0.1 to 0.16
Phosphorus (P), % 0 to 0.030
0 to 0.045
Silicon (Si), % 0.15 to 1.5
0 to 0.75
Sulfur (S), % 0 to 0.030
0 to 0.030