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Annealed AISI 205 vs. Annealed SAE-AISI T8

Both annealed AISI 205 and annealed SAE-AISI T8 are iron alloys. Both are furnished in the annealed condition. They have 70% of their average alloy composition in common. There are 22 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.

For each property being compared, the top bar is annealed AISI 205 and the bottom bar is annealed SAE-AISI T8.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 210
240
Elastic (Young's, Tensile) Modulus, GPa 200
200
Poisson's Ratio 0.28
0.29
Rockwell B Hardness 88
100
Shear Modulus, GPa 77
78
Tensile Strength: Ultimate (UTS), MPa 800
780

Thermal Properties

Latent Heat of Fusion, J/g 280
250
Melting Completion (Liquidus), °C 1380
1730
Melting Onset (Solidus), °C 1340
1670
Specific Heat Capacity, J/kg-K 480
420
Thermal Expansion, µm/m-K 18
12

Otherwise Unclassified Properties

Base Metal Price, % relative 11
45
Density, g/cm3 7.6
9.0
Embodied Carbon, kg CO2/kg material 2.6
10
Embodied Energy, MJ/kg 37
160
Embodied Water, L/kg 150
120

Common Calculations

PREN (Pitting Resistance) 23
30
Stiffness to Weight: Axial, points 14
12
Stiffness to Weight: Bending, points 26
22
Strength to Weight: Axial, points 29
24
Strength to Weight: Bending, points 25
21
Thermal Shock Resistance, points 16
24

Alloy Composition

Carbon (C), % 0.12 to 0.25
0.75 to 0.85
Chromium (Cr), % 16.5 to 18.5
3.8 to 4.5
Cobalt (Co), % 0
4.3 to 5.8
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 62.6 to 68.1
69.3 to 75.4
Manganese (Mn), % 14 to 15.5
0.2 to 0.4
Molybdenum (Mo), % 0
0.4 to 1.0
Nickel (Ni), % 1.0 to 1.7
0 to 0.3
Nitrogen (N), % 0.32 to 0.4
0
Phosphorus (P), % 0 to 0.060
0 to 0.030
Silicon (Si), % 0 to 1.0
0.2 to 0.4
Sulfur (S), % 0 to 0.030
0 to 0.030
Tungsten (W), % 0
13.3 to 14.8
Vanadium (V), % 0
1.8 to 2.4