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ASTM A182 Grade F12 Class 1 vs. AWS E309LMo

Both ASTM A182 grade F12 class 1 and AWS E309LMo are iron alloys. They have 61% of their average alloy composition in common. There are 25 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is ASTM A182 grade F12 class 1 and the bottom bar is AWS E309LMo.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 23
34
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
79
Tensile Strength: Ultimate (UTS), MPa 470
580

Thermal Properties

Latent Heat of Fusion, J/g 250
300
Melting Completion (Liquidus), °C 1470
1430
Melting Onset (Solidus), °C 1420
1390
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 45
15
Thermal Expansion, µm/m-K 13
14

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.3
2.1
Electrical Conductivity: Equal Weight (Specific), % IACS 8.3
2.4

Otherwise Unclassified Properties

Base Metal Price, % relative 2.8
22
Density, g/cm3 7.9
7.9
Embodied Carbon, kg CO2/kg material 1.6
4.2
Embodied Energy, MJ/kg 21
59
Embodied Water, L/kg 52
180

Common Calculations

PREN (Pitting Resistance) 2.8
32
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 17
21
Strength to Weight: Bending, points 17
20
Thermal Diffusivity, mm2/s 12
3.9
Thermal Shock Resistance, points 14
15

Alloy Composition

Carbon (C), % 0.050 to 0.15
0 to 0.040
Chromium (Cr), % 0.8 to 1.3
22 to 25
Copper (Cu), % 0
0 to 0.75
Iron (Fe), % 96.8 to 98.4
53.6 to 63.5
Manganese (Mn), % 0.3 to 0.6
0.5 to 2.5
Molybdenum (Mo), % 0.44 to 0.65
2.0 to 3.0
Nickel (Ni), % 0
12 to 14
Phosphorus (P), % 0 to 0.045
0 to 0.040
Silicon (Si), % 0 to 0.5
0 to 1.0
Sulfur (S), % 0 to 0.045
0 to 0.030