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SAE-AISI 1547 Steel vs. ACI-ASTM CT15C Steel

Both SAE-AISI 1547 steel and ACI-ASTM CT15C 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 SAE-AISI 1547 steel and the bottom bar is ACI-ASTM CT15C steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200 to 220
140
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 11 to 17
23
Fatigue Strength, MPa 270 to 430
130
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
76
Tensile Strength: Ultimate (UTS), MPa 740 to 800
500
Tensile Strength: Yield (Proof), MPa 400 to 690
190

Thermal Properties

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

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.1
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 8.2
1.9

Otherwise Unclassified Properties

Base Metal Price, % relative 1.9
36
Density, g/cm3 7.8
8.0
Embodied Carbon, kg CO2/kg material 1.4
6.1
Embodied Energy, MJ/kg 19
88
Embodied Water, L/kg 47
190

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 80 to 110
90
Resilience: Unit (Modulus of Resilience), kJ/m3 430 to 1280
93
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 26 to 28
17
Strength to Weight: Bending, points 23 to 24
17
Thermal Diffusivity, mm2/s 14
3.2
Thermal Shock Resistance, points 23 to 25
12

Alloy Composition

Carbon (C), % 0.43 to 0.51
0.050 to 0.15
Chromium (Cr), % 0
19 to 21
Iron (Fe), % 97.8 to 98.2
40.3 to 49.2
Manganese (Mn), % 1.4 to 1.7
0.15 to 1.5
Nickel (Ni), % 0
31 to 34
Niobium (Nb), % 0
0.5 to 1.5
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 0
0.15 to 1.5
Sulfur (S), % 0 to 0.050
0 to 0.030