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Annealed SAE-AISI M6 vs. Annealed SAE-AISI T5

Both annealed SAE-AISI M6 and annealed SAE-AISI T5 are iron alloys. Both are furnished in the annealed condition. They have 85% of their average alloy composition in common. There are 23 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is annealed SAE-AISI M6 and the bottom bar is annealed SAE-AISI T5.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 250
260
Elastic (Young's, Tensile) Modulus, GPa 200
210
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 77
80
Tensile Strength: Ultimate (UTS), MPa 840
860

Thermal Properties

Latent Heat of Fusion, J/g 260
250
Melting Completion (Liquidus), °C 1560
1810
Melting Onset (Solidus), °C 1510
1750
Specific Heat Capacity, J/kg-K 440
410
Thermal Conductivity, W/m-K 17
21
Thermal Expansion, µm/m-K 12
11

Otherwise Unclassified Properties

Base Metal Price, % relative 39
60
Density, g/cm3 8.4
9.4
Embodied Carbon, kg CO2/kg material 8.0
11
Embodied Energy, MJ/kg 120
170
Embodied Water, L/kg 160
140

Common Calculations

PREN (Pitting Resistance) 28
37
Stiffness to Weight: Axial, points 13
12
Stiffness to Weight: Bending, points 23
21
Strength to Weight: Axial, points 28
25
Strength to Weight: Bending, points 24
21
Thermal Diffusivity, mm2/s 4.7
5.5
Thermal Shock Resistance, points 26
26

Alloy Composition

Carbon (C), % 0.75 to 0.85
0.75 to 0.85
Chromium (Cr), % 3.8 to 4.5
3.8 to 5.0
Cobalt (Co), % 11 to 13
7.0 to 9.5
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 68.8 to 74.6
60.6 to 68.3
Manganese (Mn), % 0.15 to 0.4
0.2 to 0.4
Molybdenum (Mo), % 4.5 to 5.5
0.5 to 1.3
Nickel (Ni), % 0
0 to 0.3
Phosphorus (P), % 0 to 0.030
0 to 0.030
Silicon (Si), % 0.2 to 0.45
0.2 to 0.4
Sulfur (S), % 0 to 0.030
0 to 0.030
Tungsten (W), % 3.8 to 4.8
17.5 to 19
Vanadium (V), % 1.3 to 1.7
1.8 to 2.4