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ACI-ASTM CT15C Steel vs. SAE-AISI 1049 Steel

Both ACI-ASTM CT15C steel and SAE-AISI 1049 steel are iron alloys. They have 46% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is ACI-ASTM CT15C steel and the bottom bar is SAE-AISI 1049 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 140
200 to 220
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 23
11 to 17
Fatigue Strength, MPa 130
250 to 400
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 76
72
Tensile Strength: Ultimate (UTS), MPa 500
680 to 750
Tensile Strength: Yield (Proof), MPa 190
370 to 640

Thermal Properties

Latent Heat of Fusion, J/g 310
250
Maximum Temperature: Mechanical, °C 1080
400
Melting Completion (Liquidus), °C 1410
1460
Melting Onset (Solidus), °C 1360
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 12
51
Thermal Expansion, µm/m-K 16
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.7
7.0
Electrical Conductivity: Equal Weight (Specific), % IACS 1.9
8.1

Otherwise Unclassified Properties

Base Metal Price, % relative 36
1.8
Density, g/cm3 8.0
7.8
Embodied Carbon, kg CO2/kg material 6.1
1.4
Embodied Energy, MJ/kg 88
18
Embodied Water, L/kg 190
46

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 90
75 to 99
Resilience: Unit (Modulus of Resilience), kJ/m3 93
370 to 1090
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 17
24 to 27
Strength to Weight: Bending, points 17
22 to 23
Thermal Diffusivity, mm2/s 3.2
14
Thermal Shock Resistance, points 12
22 to 24

Alloy Composition

Carbon (C), % 0.050 to 0.15
0.46 to 0.53
Chromium (Cr), % 19 to 21
0
Iron (Fe), % 40.3 to 49.2
98.5 to 98.9
Manganese (Mn), % 0.15 to 1.5
0.6 to 0.9
Nickel (Ni), % 31 to 34
0
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
Sulfur (S), % 0 to 0.030
0 to 0.050