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ACI-ASTM CT15C Steel vs. S32803 Stainless Steel

Both ACI-ASTM CT15C steel and S32803 stainless steel are iron alloys. They have 69% of their average alloy composition in common. There are 32 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 S32803 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 140
210
Elastic (Young's, Tensile) Modulus, GPa 200
210
Elongation at Break, % 23
18
Fatigue Strength, MPa 130
350
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 76
81
Tensile Strength: Ultimate (UTS), MPa 500
680
Tensile Strength: Yield (Proof), MPa 190
560

Thermal Properties

Latent Heat of Fusion, J/g 310
300
Maximum Temperature: Corrosion, °C 560
510
Maximum Temperature: Mechanical, °C 1080
1100
Melting Completion (Liquidus), °C 1410
1450
Melting Onset (Solidus), °C 1360
1400
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 12
16
Thermal Expansion, µm/m-K 16
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.7
2.3
Electrical Conductivity: Equal Weight (Specific), % IACS 1.9
2.6

Otherwise Unclassified Properties

Base Metal Price, % relative 36
19
Density, g/cm3 8.0
7.7
Embodied Carbon, kg CO2/kg material 6.1
3.7
Embodied Energy, MJ/kg 88
53
Embodied Water, L/kg 190
180

Common Calculations

PREN (Pitting Resistance) 20
36
Resilience: Ultimate (Unit Rupture Work), MJ/m3 90
120
Resilience: Unit (Modulus of Resilience), kJ/m3 93
760
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 17
25
Strength to Weight: Bending, points 17
22
Thermal Diffusivity, mm2/s 3.2
4.4
Thermal Shock Resistance, points 12
22

Alloy Composition

Carbon (C), % 0.050 to 0.15
0 to 0.015
Chromium (Cr), % 19 to 21
28 to 29
Iron (Fe), % 40.3 to 49.2
62.9 to 67.1
Manganese (Mn), % 0.15 to 1.5
0 to 0.5
Molybdenum (Mo), % 0
1.8 to 2.5
Nickel (Ni), % 31 to 34
3.0 to 4.0
Niobium (Nb), % 0.5 to 1.5
0.15 to 0.5
Nitrogen (N), % 0
0 to 0.020
Phosphorus (P), % 0 to 0.030
0 to 0.020
Silicon (Si), % 0.15 to 1.5
0 to 0.55
Sulfur (S), % 0 to 0.030
0 to 0.0035