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ACI-ASTM CT15C Steel vs. ASTM A369 Grade FP9

Both ACI-ASTM CT15C steel and ASTM A369 grade FP9 are iron alloys. They have 55% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is ACI-ASTM CT15C steel and the bottom bar is ASTM A369 grade FP9.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 140
140
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 23
20
Fatigue Strength, MPa 130
160
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
75
Tensile Strength: Ultimate (UTS), MPa 500
470
Tensile Strength: Yield (Proof), MPa 190
240

Thermal Properties

Latent Heat of Fusion, J/g 310
270
Maximum Temperature: Mechanical, °C 1080
600
Melting Completion (Liquidus), °C 1410
1450
Melting Onset (Solidus), °C 1360
1410
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 12
26
Thermal Expansion, µm/m-K 16
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.7
9.0
Electrical Conductivity: Equal Weight (Specific), % IACS 1.9
10

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
2.0
Embodied Energy, MJ/kg 88
28
Embodied Water, L/kg 190
87

Common Calculations

PREN (Pitting Resistance) 20
12
Resilience: Ultimate (Unit Rupture Work), MJ/m3 90
80
Resilience: Unit (Modulus of Resilience), kJ/m3 93
140
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 17
17
Strength to Weight: Bending, points 17
17
Thermal Diffusivity, mm2/s 3.2
6.9
Thermal Shock Resistance, points 12
13

Alloy Composition

Carbon (C), % 0.050 to 0.15
0 to 0.15
Chromium (Cr), % 19 to 21
8.0 to 10
Iron (Fe), % 40.3 to 49.2
87.1 to 90.3
Manganese (Mn), % 0.15 to 1.5
0.3 to 0.6
Molybdenum (Mo), % 0
0.9 to 1.1
Nickel (Ni), % 31 to 34
0
Niobium (Nb), % 0.5 to 1.5
0
Phosphorus (P), % 0 to 0.030
0 to 0.030
Silicon (Si), % 0.15 to 1.5
0.5 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.030