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Annealed AISI 205 vs. Annealed SAE-AISI T4

Both annealed AISI 205 and annealed SAE-AISI T4 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 T4.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 210
240
Elastic (Young's, Tensile) Modulus, GPa 200
210
Poisson's Ratio 0.28
0.29
Rockwell B Hardness 88
100
Shear Modulus, GPa 77
80
Tensile Strength: Ultimate (UTS), MPa 800
800

Thermal Properties

Latent Heat of Fusion, J/g 280
250
Melting Completion (Liquidus), °C 1380
1810
Melting Onset (Solidus), °C 1340
1750
Specific Heat Capacity, J/kg-K 480
410
Thermal Expansion, µm/m-K 18
12

Otherwise Unclassified Properties

Base Metal Price, % relative 11
55
Density, g/cm3 7.6
9.4
Embodied Carbon, kg CO2/kg material 2.6
8.5
Embodied Energy, MJ/kg 37
130
Embodied Water, L/kg 150
120

Common Calculations

PREN (Pitting Resistance) 23
37
Stiffness to Weight: Axial, points 14
12
Stiffness to Weight: Bending, points 26
21
Strength to Weight: Axial, points 29
24
Strength to Weight: Bending, points 25
20
Thermal Shock Resistance, points 16
24

Alloy Composition

Carbon (C), % 0.12 to 0.25
0.7 to 0.8
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
66.3 to 72.3
Manganese (Mn), % 14 to 15.5
0.1 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
17.5 to 19
Vanadium (V), % 0
0.8 to 1.2