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ACI-ASTM CD3MN Steel vs. ASTM A369 Grade FP12

Both ACI-ASTM CD3MN steel and ASTM A369 grade FP12 are iron alloys. They have 70% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is ACI-ASTM CD3MN steel and the bottom bar is ASTM A369 grade FP12.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 29
20
Fatigue Strength, MPa 340
170
Poisson's Ratio 0.27
0.29
Shear Modulus, GPa 79
73
Tensile Strength: Ultimate (UTS), MPa 710
470
Tensile Strength: Yield (Proof), MPa 460
250

Thermal Properties

Latent Heat of Fusion, J/g 300
250
Maximum Temperature: Mechanical, °C 1060
430
Melting Completion (Liquidus), °C 1450
1470
Melting Onset (Solidus), °C 1400
1430
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 16
45
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
8.3

Otherwise Unclassified Properties

Base Metal Price, % relative 18
2.8
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 3.6
1.6
Embodied Energy, MJ/kg 50
21
Embodied Water, L/kg 160
52

Common Calculations

PREN (Pitting Resistance) 35
2.8
Resilience: Ultimate (Unit Rupture Work), MJ/m3 180
81
Resilience: Unit (Modulus of Resilience), kJ/m3 530
160
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 25
17
Strength to Weight: Bending, points 23
17
Thermal Diffusivity, mm2/s 4.3
12
Thermal Shock Resistance, points 20
14

Alloy Composition

Carbon (C), % 0 to 0.030
0.050 to 0.15
Chromium (Cr), % 21 to 23.5
0.8 to 1.3
Copper (Cu), % 0 to 1.0
0
Iron (Fe), % 62.6 to 71.9
96.8 to 98.4
Manganese (Mn), % 0 to 1.5
0.3 to 0.61
Molybdenum (Mo), % 2.5 to 3.5
0.44 to 0.65
Nickel (Ni), % 4.5 to 6.5
0
Nitrogen (N), % 0.1 to 0.3
0
Phosphorus (P), % 0 to 0.040
0 to 0.025
Silicon (Si), % 0 to 1.0
0 to 0.5
Sulfur (S), % 0 to 0.020
0 to 0.025