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Hardened SAE-AISI F2 vs. Hardened SAE-AISI T5

Both hardened SAE-AISI F2 and hardened SAE-AISI T5 are iron alloys. Both are furnished in the hardened (H) condition. They have 70% of their average alloy composition in common. There are 23 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is hardened SAE-AISI F2 and the bottom bar is hardened SAE-AISI T5.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
210
Poisson's Ratio 0.29
0.29
Rockwell C Hardness 73
66
Shear Modulus, GPa 73
80
Tensile Strength: Ultimate (UTS), MPa 2360
2140

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Melting Completion (Liquidus), °C 1520
1810
Melting Onset (Solidus), °C 1470
1750
Specific Heat Capacity, J/kg-K 460
410
Thermal Conductivity, W/m-K 42
21
Thermal Expansion, µm/m-K 13
11

Otherwise Unclassified Properties

Base Metal Price, % relative 10
60
Density, g/cm3 8.1
9.4
Embodied Carbon, kg CO2/kg material 2.3
11
Embodied Energy, MJ/kg 32
170
Embodied Water, L/kg 50
140

Common Calculations

PREN (Pitting Resistance) 6.5
37
Stiffness to Weight: Axial, points 13
12
Stiffness to Weight: Bending, points 24
21
Strength to Weight: Axial, points 81
63
Strength to Weight: Bending, points 49
39
Thermal Diffusivity, mm2/s 11
5.5
Thermal Shock Resistance, points 71
66

Alloy Composition

Carbon (C), % 1.2 to 1.4
0.75 to 0.85
Chromium (Cr), % 0.2 to 0.4
3.8 to 5.0
Cobalt (Co), % 0
7.0 to 9.5
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 92.6 to 95.4
60.6 to 68.3
Manganese (Mn), % 0.1 to 0.5
0.2 to 0.4
Molybdenum (Mo), % 0
0.5 to 1.3
Nickel (Ni), % 0
0 to 0.3
Phosphorus (P), % 0 to 0.030
0 to 0.030
Silicon (Si), % 0.1 to 0.5
0.2 to 0.4
Sulfur (S), % 0 to 0.030
0 to 0.030
Tungsten (W), % 3.0 to 4.5
17.5 to 19
Vanadium (V), % 0
1.8 to 2.4