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Annealed SAE-AISI D7 vs. Annealed AISI W5

Both annealed SAE-AISI D7 and annealed AISI W5 are iron alloys. Both are furnished in the annealed condition. They have 82% of their average alloy composition in common. There are 22 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is annealed SAE-AISI D7 and the bottom bar is annealed AISI W5.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 240
180
Elastic (Young's, Tensile) Modulus, GPa 190
190
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 73
72
Tensile Strength: Ultimate (UTS), MPa 800
600

Thermal Properties

Latent Heat of Fusion, J/g 270
250
Melting Completion (Liquidus), °C 1440
1450
Melting Onset (Solidus), °C 1400
1410
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 27
45
Thermal Expansion, µm/m-K 11
12

Otherwise Unclassified Properties

Base Metal Price, % relative 10
2.3
Density, g/cm3 7.6
7.8
Embodied Carbon, kg CO2/kg material 11
1.6
Embodied Energy, MJ/kg 180
21
Embodied Water, L/kg 130
48

Common Calculations

Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 29
21
Strength to Weight: Bending, points 25
20
Thermal Diffusivity, mm2/s 7.4
12
Thermal Shock Resistance, points 27
20

Alloy Composition

Carbon (C), % 2.2 to 2.5
1.1 to 1.2
Chromium (Cr), % 11.5 to 13.5
0.4 to 0.6
Copper (Cu), % 0 to 0.25
0 to 0.2
Iron (Fe), % 76.6 to 81.9
96.6 to 98.4
Manganese (Mn), % 0 to 0.6
0.1 to 0.4
Molybdenum (Mo), % 0.7 to 1.2
0 to 0.1
Nickel (Ni), % 0 to 0.3
0 to 0.2
Phosphorus (P), % 0 to 0.030
0 to 0.030
Silicon (Si), % 0 to 0.6
0.1 to 0.4
Sulfur (S), % 0 to 0.030
0 to 0.030
Tungsten (W), % 0
0 to 0.15
Vanadium (V), % 3.8 to 4.4
0 to 0.1