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SAE-AISI M41 Steel vs. SAE-AISI T5 Steel

Both SAE-AISI M41 steel and SAE-AISI T5 steel are iron alloys. They have 85% of their average alloy composition in common.

For each property being compared, the top bar is SAE-AISI M41 steel and the bottom bar is SAE-AISI T5 steel.

Metric UnitsUS Customary Units

Mechanical Properties

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 800 to 2290
860 to 2140

Thermal Properties

Latent Heat of Fusion, J/g 260
250
Melting Completion (Liquidus), °C 1600
1810
Melting Onset (Solidus), °C 1550
1750
Specific Heat Capacity, J/kg-K 440
410
Thermal Conductivity, W/m-K 22
21
Thermal Expansion, µm/m-K 12
11

Otherwise Unclassified Properties

Base Metal Price, % relative 33
60
Density, g/cm3 8.4
9.4
Embodied Carbon, kg CO2/kg material 9.1
11
Embodied Energy, MJ/kg 140
170
Embodied Water, L/kg 120
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 26 to 76
25 to 63
Strength to Weight: Bending, points 23 to 46
21 to 39
Thermal Diffusivity, mm2/s 6.0
5.5
Thermal Shock Resistance, points 25 to 71
26 to 66

Alloy Composition

Carbon (C), % 1.1 to 1.2
0.75 to 0.85
Chromium (Cr), % 3.8 to 4.5
3.8 to 5.0
Cobalt (Co), % 4.8 to 5.8
7.0 to 9.5
Copper (Cu), % 0 to 0.25
0 to 0.25
Iron (Fe), % 73.4 to 78.9
60.6 to 68.3
Manganese (Mn), % 0.2 to 0.6
0.2 to 0.4
Molybdenum (Mo), % 3.3 to 4.3
0.5 to 1.3
Nickel (Ni), % 0 to 0.3
0 to 0.3
Phosphorus (P), % 0 to 0.030
0 to 0.030
Silicon (Si), % 0.15 to 0.5
0.2 to 0.4
Sulfur (S), % 0 to 0.030
0 to 0.030
Tungsten (W), % 6.3 to 7.0
17.5 to 19
Vanadium (V), % 1.8 to 2.3
1.8 to 2.4

Comparable Variants