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AISI 420F Stainless Steel vs. ACI-ASTM CT15C Steel

Both AISI 420F stainless steel and ACI-ASTM CT15C steel are iron alloys. They have 59% 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 AISI 420F stainless steel and the bottom bar is ACI-ASTM CT15C steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 230
140
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 18
23
Fatigue Strength, MPa 270
130
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
76
Tensile Strength: Ultimate (UTS), MPa 740
500
Tensile Strength: Yield (Proof), MPa 430
190

Thermal Properties

Latent Heat of Fusion, J/g 270
310
Maximum Temperature: Corrosion, °C 390
560
Maximum Temperature: Mechanical, °C 760
1080
Melting Completion (Liquidus), °C 1440
1410
Melting Onset (Solidus), °C 1390
1360
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 25
12
Thermal Expansion, µm/m-K 10
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.1
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 3.7
1.9

Otherwise Unclassified Properties

Base Metal Price, % relative 7.0
36
Density, g/cm3 7.7
8.0
Embodied Carbon, kg CO2/kg material 2.0
6.1
Embodied Energy, MJ/kg 28
88
Embodied Water, L/kg 100
190

Common Calculations

PREN (Pitting Resistance) 14
20
Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
90
Resilience: Unit (Modulus of Resilience), kJ/m3 480
93
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 27
17
Strength to Weight: Bending, points 23
17
Thermal Diffusivity, mm2/s 6.8
3.2
Thermal Shock Resistance, points 27
12

Alloy Composition

Carbon (C), % 0.3 to 0.4
0.050 to 0.15
Chromium (Cr), % 12 to 14
19 to 21
Iron (Fe), % 82.4 to 87.6
40.3 to 49.2
Manganese (Mn), % 0 to 1.3
0.15 to 1.5
Molybdenum (Mo), % 0 to 0.5
0
Nickel (Ni), % 0
31 to 34
Niobium (Nb), % 0
0.5 to 1.5
Phosphorus (P), % 0 to 0.060
0 to 0.030
Silicon (Si), % 0 to 1.0
0.15 to 1.5
Sulfur (S), % 0.15 to 0.35
0 to 0.030