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ASTM A182 Grade F2 vs. AWS ER70S-A1

Both ASTM A182 grade F2 and AWS ER70S-A1 are iron alloys. Their average alloy composition is basically identical. There are 27 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is ASTM A182 grade F2 and the bottom bar is AWS ER70S-A1.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 23
22
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
73
Tensile Strength: Ultimate (UTS), MPa 550
590
Tensile Strength: Yield (Proof), MPa 310
450

Thermal Properties

Latent Heat of Fusion, J/g 250
260
Melting Completion (Liquidus), °C 1460
1460
Melting Onset (Solidus), °C 1420
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 46
50
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.3
7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 8.3
8.3

Otherwise Unclassified Properties

Base Metal Price, % relative 2.7
2.5
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.6
1.5
Embodied Energy, MJ/kg 21
20
Embodied Water, L/kg 50
48

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
120
Resilience: Unit (Modulus of Resilience), kJ/m3 250
540
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 20
21
Strength to Weight: Bending, points 19
20
Thermal Diffusivity, mm2/s 12
14
Thermal Shock Resistance, points 16
17

Alloy Composition

Carbon (C), % 0.050 to 0.21
0 to 0.12
Chromium (Cr), % 0.5 to 0.81
0
Copper (Cu), % 0
0 to 0.35
Iron (Fe), % 96.9 to 98.6
96.1 to 99.3
Manganese (Mn), % 0.3 to 0.8
0 to 1.3
Molybdenum (Mo), % 0.44 to 0.65
0.4 to 0.65
Nickel (Ni), % 0
0 to 0.2
Phosphorus (P), % 0 to 0.040
0 to 0.025
Silicon (Si), % 0.1 to 0.6
0.3 to 0.7
Sulfur (S), % 0 to 0.040
0 to 0.025
Residuals, % 0
0 to 0.5