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ACI-ASTM CT15C Steel vs. S35045 Stainless Steel

Both ACI-ASTM CT15C steel and S35045 stainless steel are iron alloys. They have 90% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is ACI-ASTM CT15C steel and the bottom bar is S35045 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 23
39
Fatigue Strength, MPa 130
170
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
78
Tensile Strength: Ultimate (UTS), MPa 500
540
Tensile Strength: Yield (Proof), MPa 190
190

Thermal Properties

Latent Heat of Fusion, J/g 310
310
Maximum Temperature: Corrosion, °C 560
520
Maximum Temperature: Mechanical, °C 1080
1100
Melting Completion (Liquidus), °C 1410
1390
Melting Onset (Solidus), °C 1360
1340
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 12
12
Thermal Expansion, µm/m-K 16
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.7
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 1.9
2.0

Otherwise Unclassified Properties

Base Metal Price, % relative 36
34
Density, g/cm3 8.0
8.0
Embodied Carbon, kg CO2/kg material 6.1
5.8
Embodied Energy, MJ/kg 88
83
Embodied Water, L/kg 190
230

Common Calculations

PREN (Pitting Resistance) 20
27
Resilience: Ultimate (Unit Rupture Work), MJ/m3 90
170
Resilience: Unit (Modulus of Resilience), kJ/m3 93
94
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 17
19
Strength to Weight: Bending, points 17
19
Thermal Diffusivity, mm2/s 3.2
3.2
Thermal Shock Resistance, points 12
12

Alloy Composition

Aluminum (Al), % 0
0.15 to 0.6
Carbon (C), % 0.050 to 0.15
0.060 to 0.1
Chromium (Cr), % 19 to 21
25 to 29
Copper (Cu), % 0
0 to 0.75
Iron (Fe), % 40.3 to 49.2
29.4 to 42.6
Manganese (Mn), % 0.15 to 1.5
0 to 1.5
Nickel (Ni), % 31 to 34
32 to 37
Niobium (Nb), % 0.5 to 1.5
0
Phosphorus (P), % 0 to 0.030
0 to 0.045
Silicon (Si), % 0.15 to 1.5
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.015
Titanium (Ti), % 0
0.15 to 0.6