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Annealed SAE-AISI A7 vs. Annealed SAE-AISI F2

Both annealed SAE-AISI A7 and annealed SAE-AISI F2 are iron alloys. Both are furnished in the annealed condition. They have 88% of their average alloy composition in common. There are 23 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 annealed SAE-AISI A7 and the bottom bar is annealed SAE-AISI F2.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 240
210
Elastic (Young's, Tensile) Modulus, GPa 190
190
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 72
73
Tensile Strength: Ultimate (UTS), MPa 800
710

Thermal Properties

Latent Heat of Fusion, J/g 260
250
Melting Completion (Liquidus), °C 1470
1520
Melting Onset (Solidus), °C 1430
1470
Specific Heat Capacity, J/kg-K 470
460
Thermal Conductivity, W/m-K 37
42
Thermal Expansion, µm/m-K 12
13

Otherwise Unclassified Properties

Base Metal Price, % relative 10
10
Density, g/cm3 7.7
8.1
Embodied Carbon, kg CO2/kg material 13
2.3
Embodied Energy, MJ/kg 200
32
Embodied Water, L/kg 100
50

Common Calculations

PREN (Pitting Resistance) 11
6.5
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 29
24
Strength to Weight: Bending, points 25
22
Thermal Diffusivity, mm2/s 10
11
Thermal Shock Resistance, points 27
21

Alloy Composition

Carbon (C), % 2.0 to 2.9
1.2 to 1.4
Chromium (Cr), % 5.0 to 5.8
0.2 to 0.4
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 81.4 to 87.7
92.6 to 95.4
Manganese (Mn), % 0 to 0.8
0.1 to 0.5
Molybdenum (Mo), % 0.9 to 1.4
0
Nickel (Ni), % 0 to 0.3
0
Phosphorus (P), % 0 to 0.030
0 to 0.030
Silicon (Si), % 0 to 0.5
0.1 to 0.5
Sulfur (S), % 0 to 0.030
0 to 0.030
Tungsten (W), % 0.5 to 1.5
3.0 to 4.5
Vanadium (V), % 3.9 to 5.2
0