ACI-ASTM CG3M Steel vs. ACI-ASTM CF3MN Steel
Both ACI-ASTM CG3M steel and ACI-ASTM CF3MN steel are iron alloys. Both are furnished in the heat treated (HT) condition. Their average alloy composition is basically identical.
For each property being compared, the top bar is ACI-ASTM CG3M steel and the bottom bar is ACI-ASTM CF3MN steel.
Metric UnitsUS Customary Units
Mechanical Properties
Brinell Hardness | 170 | |
170 |
Elastic (Young's, Tensile) Modulus, GPa | 200 | |
200 |
Elongation at Break, % | 28 | |
39 |
Fatigue Strength, MPa | 200 | |
250 |
Poisson's Ratio | 0.28 | |
0.28 |
Shear Modulus, GPa | 79 | |
78 |
Tensile Strength: Ultimate (UTS), MPa | 580 | |
580 |
Tensile Strength: Yield (Proof), MPa | 270 | |
290 |
Thermal Properties
Latent Heat of Fusion, J/g | 300 | |
300 |
Maximum Temperature: Corrosion, °C | 420 | |
420 |
Maximum Temperature: Mechanical, °C | 1020 | |
1010 |
Melting Completion (Liquidus), °C | 1450 | |
1440 |
Melting Onset (Solidus), °C | 1400 | |
1390 |
Specific Heat Capacity, J/kg-K | 470 | |
480 |
Thermal Conductivity, W/m-K | 15 | |
15 |
Thermal Expansion, µm/m-K | 16 | |
16 |
Electrical Properties
Electrical Conductivity: Equal Volume, % IACS | 2.0 | |
2.1 |
Electrical Conductivity: Equal Weight (Specific), % IACS | 2.3 | |
2.4 |
Otherwise Unclassified Properties
Base Metal Price, % relative | 20 | |
19 |
Density, g/cm3 | 7.9 | |
7.8 |
Embodied Carbon, kg CO2/kg material | 4.1 | |
3.9 |
Embodied Energy, MJ/kg | 56 | |
53 |
Embodied Water, L/kg | 160 | |
160 |
Common Calculations
PREN (Pitting Resistance) | 31 | |
30 |
Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 130 | |
190 |
Resilience: Unit (Modulus of Resilience), kJ/m3 | 190 | |
210 |
Stiffness to Weight: Axial, points | 14 | |
14 |
Stiffness to Weight: Bending, points | 25 | |
25 |
Strength to Weight: Axial, points | 20 | |
20 |
Strength to Weight: Bending, points | 20 | |
20 |
Thermal Diffusivity, mm2/s | 4.1 | |
4.1 |
Thermal Shock Resistance, points | 13 | |
13 |
Alloy Composition
Carbon (C), % | 0 to 0.030 | |
0 to 0.030 |
Chromium (Cr), % | 18 to 21 | |
17 to 22 |
Iron (Fe), % | 58.9 to 70 | |
58.7 to 71.9 |
Manganese (Mn), % | 0 to 1.5 | |
0 to 1.5 |
Molybdenum (Mo), % | 3.0 to 4.0 | |
2.0 to 3.0 |
Nickel (Ni), % | 9.0 to 13 | |
9.0 to 13 |
Nitrogen (N), % | 0 | |
0.1 to 0.2 |
Phosphorus (P), % | 0 to 0.040 | |
0 to 0.040 |
Silicon (Si), % | 0 to 1.5 | |
0 to 1.5 |
Sulfur (S), % | 0 to 0.040 | |
0 to 0.040 |