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ACI-ASTM CT15C Steel vs. S42300 Stainless Steel

Both ACI-ASTM CT15C steel and S42300 stainless steel are iron alloys. They have 58% 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 CT15C steel and the bottom bar is S42300 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 140
330
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 23
9.1
Fatigue Strength, MPa 130
440
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
77
Tensile Strength: Ultimate (UTS), MPa 500
1100
Tensile Strength: Yield (Proof), MPa 190
850

Thermal Properties

Latent Heat of Fusion, J/g 310
270
Maximum Temperature: Corrosion, °C 560
380
Maximum Temperature: Mechanical, °C 1080
750
Melting Completion (Liquidus), °C 1410
1470
Melting Onset (Solidus), °C 1360
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 12
25
Thermal Expansion, µm/m-K 16
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.7
4.5
Electrical Conductivity: Equal Weight (Specific), % IACS 1.9
5.2

Otherwise Unclassified Properties

Base Metal Price, % relative 36
9.5
Density, g/cm3 8.0
7.8
Embodied Carbon, kg CO2/kg material 6.1
3.2
Embodied Energy, MJ/kg 88
44
Embodied Water, L/kg 190
110

Common Calculations

PREN (Pitting Resistance) 20
21
Resilience: Ultimate (Unit Rupture Work), MJ/m3 90
93
Resilience: Unit (Modulus of Resilience), kJ/m3 93
1840
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 17
39
Strength to Weight: Bending, points 17
30
Thermal Diffusivity, mm2/s 3.2
6.8
Thermal Shock Resistance, points 12
40

Alloy Composition

Carbon (C), % 0.050 to 0.15
0.27 to 0.32
Chromium (Cr), % 19 to 21
11 to 12
Iron (Fe), % 40.3 to 49.2
82 to 85.1
Manganese (Mn), % 0.15 to 1.5
1.0 to 1.4
Molybdenum (Mo), % 0
2.5 to 3.0
Nickel (Ni), % 31 to 34
0 to 0.5
Niobium (Nb), % 0.5 to 1.5
0
Phosphorus (P), % 0 to 0.030
0 to 0.025
Silicon (Si), % 0.15 to 1.5
0 to 0.5
Sulfur (S), % 0 to 0.030
0 to 0.025
Vanadium (V), % 0
0.2 to 0.3