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ACI-ASTM CT15C Steel vs. S45503 Stainless Steel

Both ACI-ASTM CT15C steel and S45503 stainless steel are iron alloys. They have 66% of their average alloy composition in common. There are 27 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is ACI-ASTM CT15C steel and the bottom bar is S45503 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 140
410 to 500
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 23
4.6 to 6.8
Fatigue Strength, MPa 130
710 to 800
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
75
Tensile Strength: Ultimate (UTS), MPa 500
1610 to 1850
Tensile Strength: Yield (Proof), MPa 190
1430 to 1700

Thermal Properties

Latent Heat of Fusion, J/g 310
270
Maximum Temperature: Corrosion, °C 560
640
Maximum Temperature: Mechanical, °C 1080
760
Melting Completion (Liquidus), °C 1410
1440
Melting Onset (Solidus), °C 1360
1400
Specific Heat Capacity, J/kg-K 470
470
Thermal Expansion, µm/m-K 16
11

Otherwise Unclassified Properties

Base Metal Price, % relative 36
15
Density, g/cm3 8.0
7.9
Embodied Carbon, kg CO2/kg material 6.1
3.4
Embodied Energy, MJ/kg 88
48
Embodied Water, L/kg 190
120

Common Calculations

PREN (Pitting Resistance) 20
13
Resilience: Ultimate (Unit Rupture Work), MJ/m3 90
82 to 110
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 17
57 to 65
Strength to Weight: Bending, points 17
39 to 43
Thermal Shock Resistance, points 12
56 to 64

Alloy Composition

Carbon (C), % 0.050 to 0.15
0 to 0.010
Chromium (Cr), % 19 to 21
11 to 12.5
Copper (Cu), % 0
1.5 to 2.5
Iron (Fe), % 40.3 to 49.2
72.4 to 78.9
Manganese (Mn), % 0.15 to 1.5
0 to 0.5
Molybdenum (Mo), % 0
0 to 0.5
Nickel (Ni), % 31 to 34
7.5 to 9.5
Niobium (Nb), % 0.5 to 1.5
0.1 to 0.5
Phosphorus (P), % 0 to 0.030
0 to 0.010
Silicon (Si), % 0.15 to 1.5
0 to 0.2
Sulfur (S), % 0 to 0.030
0 to 0.010
Titanium (Ti), % 0
1.0 to 1.4