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ASTM A182 Grade F12 Class 2 vs. ACI-ASTM CG6MMN Steel

Both ASTM A182 grade F12 class 2 and ACI-ASTM CG6MMN steel are iron alloys. They have 60% of their average alloy composition in common. There are 27 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is ASTM A182 grade F12 class 2 and the bottom bar is ACI-ASTM CG6MMN steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 180
190
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 22
34
Fatigue Strength, MPa 220
260
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
79
Tensile Strength: Ultimate (UTS), MPa 540
670
Tensile Strength: Yield (Proof), MPa 310
320

Thermal Properties

Latent Heat of Fusion, J/g 250
300
Maximum Temperature: Mechanical, °C 430
1080
Melting Completion (Liquidus), °C 1460
1420
Melting Onset (Solidus), °C 1420
1380
Specific Heat Capacity, J/kg-K 470
480
Thermal Expansion, µm/m-K 13
17

Otherwise Unclassified Properties

Base Metal Price, % relative 2.8
22
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.6
4.8
Embodied Energy, MJ/kg 21
68
Embodied Water, L/kg 52
180

Common Calculations

PREN (Pitting Resistance) 2.8
34
Resilience: Ultimate (Unit Rupture Work), MJ/m3 100
190
Resilience: Unit (Modulus of Resilience), kJ/m3 260
260
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 19
24
Strength to Weight: Bending, points 19
22
Thermal Shock Resistance, points 16
14

Alloy Composition

Carbon (C), % 0.1 to 0.2
0 to 0.060
Chromium (Cr), % 0.8 to 1.3
20.5 to 23.5
Iron (Fe), % 96.4 to 98.3
51.9 to 62.1
Manganese (Mn), % 0.3 to 0.8
4.0 to 6.0
Molybdenum (Mo), % 0.44 to 0.65
1.5 to 3.0
Nickel (Ni), % 0
11.5 to 13.5
Niobium (Nb), % 0
0.1 to 0.3
Nitrogen (N), % 0
0.2 to 0.4
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0.1 to 0.6
0 to 1.0
Sulfur (S), % 0 to 0.040
0 to 0.030
Vanadium (V), % 0
0.1 to 0.3