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ACI-ASTM CT15C Steel vs. ACI-ASTM CG3M Steel

Both ACI-ASTM CT15C steel and ACI-ASTM CG3M steel are iron alloys. They have 77% of their average alloy composition in common.

For each property being compared, the top bar is ACI-ASTM CT15C steel and the bottom bar is ACI-ASTM CG3M steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 140
170
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 23
28
Fatigue Strength, MPa 130
200
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
79
Tensile Strength: Ultimate (UTS), MPa 500
580
Tensile Strength: Yield (Proof), MPa 190
270

Thermal Properties

Latent Heat of Fusion, J/g 310
300
Maximum Temperature: Corrosion, °C 560
420
Maximum Temperature: Mechanical, °C 1080
1020
Melting Completion (Liquidus), °C 1410
1450
Melting Onset (Solidus), °C 1360
1400
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 12
15
Thermal Expansion, µm/m-K 16
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.7
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 1.9
2.3

Otherwise Unclassified Properties

Base Metal Price, % relative 36
20
Density, g/cm3 8.0
7.9
Embodied Carbon, kg CO2/kg material 6.1
4.1
Embodied Energy, MJ/kg 88
56
Embodied Water, L/kg 190
160

Common Calculations

PREN (Pitting Resistance) 20
31
Resilience: Ultimate (Unit Rupture Work), MJ/m3 90
130
Resilience: Unit (Modulus of Resilience), kJ/m3 93
190
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 17
20
Strength to Weight: Bending, points 17
20
Thermal Diffusivity, mm2/s 3.2
4.1
Thermal Shock Resistance, points 12
13

Alloy Composition

Carbon (C), % 0.050 to 0.15
0 to 0.030
Chromium (Cr), % 19 to 21
18 to 21
Iron (Fe), % 40.3 to 49.2
58.9 to 70
Manganese (Mn), % 0.15 to 1.5
0 to 1.5
Molybdenum (Mo), % 0
3.0 to 4.0
Nickel (Ni), % 31 to 34
9.0 to 13
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 to 1.5
Sulfur (S), % 0 to 0.030
0 to 0.040