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Annealed AISI 202 vs. Annealed SAE-AISI T2

Both annealed AISI 202 and annealed SAE-AISI T2 are iron alloys. Both are furnished in the annealed condition. They have 73% of their average alloy composition in common. There are 23 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown.

For each property being compared, the top bar is annealed AISI 202 and the bottom bar is annealed SAE-AISI T2.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 210
230
Elastic (Young's, Tensile) Modulus, GPa 200
200
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
79
Tensile Strength: Ultimate (UTS), MPa 700
780

Thermal Properties

Latent Heat of Fusion, J/g 290
250
Melting Completion (Liquidus), °C 1400
1820
Melting Onset (Solidus), °C 1360
1760
Specific Heat Capacity, J/kg-K 480
410
Thermal Conductivity, W/m-K 15
19
Thermal Expansion, µm/m-K 17
12

Otherwise Unclassified Properties

Base Metal Price, % relative 13
46
Density, g/cm3 7.7
9.3
Embodied Carbon, kg CO2/kg material 2.8
11
Embodied Energy, MJ/kg 40
170
Embodied Water, L/kg 150
98

Common Calculations

PREN (Pitting Resistance) 20
36
Stiffness to Weight: Axial, points 14
12
Stiffness to Weight: Bending, points 25
21
Strength to Weight: Axial, points 25
23
Strength to Weight: Bending, points 23
20
Thermal Diffusivity, mm2/s 4.0
4.9
Thermal Shock Resistance, points 15
23

Alloy Composition

Carbon (C), % 0 to 0.15
0.8 to 0.9
Chromium (Cr), % 17 to 19
3.8 to 4.5
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 63.5 to 71.5
70.8 to 75.8
Manganese (Mn), % 7.5 to 10
0.2 to 0.4
Molybdenum (Mo), % 0
0 to 1.0
Nickel (Ni), % 4.0 to 6.0
0 to 0.3
Nitrogen (N), % 0 to 0.25
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
1.8 to 2.4