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ACI-ASTM CT15C Steel vs. AISI 403 Stainless Steel

Both ACI-ASTM CT15C steel and AISI 403 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 AISI 403 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 140
190 to 240
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 23
16 to 25
Fatigue Strength, MPa 130
200 to 340
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
76
Tensile Strength: Ultimate (UTS), MPa 500
530 to 780
Tensile Strength: Yield (Proof), MPa 190
280 to 570

Thermal Properties

Latent Heat of Fusion, J/g 310
270
Maximum Temperature: Corrosion, °C 560
390
Maximum Temperature: Mechanical, °C 1080
740
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
28
Thermal Expansion, µm/m-K 16
9.9

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.7
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 1.9
3.3

Otherwise Unclassified Properties

Base Metal Price, % relative 36
6.5
Density, g/cm3 8.0
7.8
Embodied Carbon, kg CO2/kg material 6.1
1.9
Embodied Energy, MJ/kg 88
27
Embodied Water, L/kg 190
99

Common Calculations

PREN (Pitting Resistance) 20
12
Resilience: Ultimate (Unit Rupture Work), MJ/m3 90
110 to 120
Resilience: Unit (Modulus of Resilience), kJ/m3 93
210 to 840
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 17
19 to 28
Strength to Weight: Bending, points 17
19 to 24
Thermal Diffusivity, mm2/s 3.2
7.6
Thermal Shock Resistance, points 12
20 to 29

Alloy Composition

Carbon (C), % 0.050 to 0.15
0 to 0.15
Chromium (Cr), % 19 to 21
11.5 to 13
Iron (Fe), % 40.3 to 49.2
84.7 to 88.5
Manganese (Mn), % 0.15 to 1.5
0 to 1.0
Nickel (Ni), % 31 to 34
0 to 0.6
Niobium (Nb), % 0.5 to 1.5
0
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 0.15 to 1.5
0 to 0.5
Sulfur (S), % 0 to 0.030
0 to 0.030