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ASTM B817 Type I vs. SAE-AISI M41 Steel

ASTM B817 type I belongs to the titanium alloys classification, while SAE-AISI M41 steel belongs to the iron alloys. There are 21 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is ASTM B817 type I and the bottom bar is SAE-AISI M41 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
200
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 40
77
Tensile Strength: Ultimate (UTS), MPa 770 to 960
800 to 2290

Thermal Properties

Latent Heat of Fusion, J/g 410
260
Melting Completion (Liquidus), °C 1600
1600
Melting Onset (Solidus), °C 1550
1550
Specific Heat Capacity, J/kg-K 560
440
Thermal Conductivity, W/m-K 7.1
22
Thermal Expansion, µm/m-K 9.6
12

Otherwise Unclassified Properties

Base Metal Price, % relative 36
33
Density, g/cm3 4.4
8.4
Embodied Carbon, kg CO2/kg material 38
9.1
Embodied Energy, MJ/kg 610
140
Embodied Water, L/kg 200
120

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 35
23
Strength to Weight: Axial, points 48 to 60
26 to 76
Strength to Weight: Bending, points 42 to 49
23 to 46
Thermal Diffusivity, mm2/s 2.9
6.0
Thermal Shock Resistance, points 54 to 68
25 to 71

Alloy Composition

Aluminum (Al), % 5.5 to 6.8
0
Carbon (C), % 0 to 0.1
1.1 to 1.2
Chlorine (Cl), % 0 to 0.2
0
Chromium (Cr), % 0
3.8 to 4.5
Cobalt (Co), % 0
4.8 to 5.8
Copper (Cu), % 0
0 to 0.25
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.4
73.4 to 78.9
Manganese (Mn), % 0
0.2 to 0.6
Molybdenum (Mo), % 0
3.3 to 4.3
Nickel (Ni), % 0
0 to 0.3
Nitrogen (N), % 0 to 0.040
0
Oxygen (O), % 0 to 0.3
0
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0 to 0.1
0.15 to 0.5
Sodium (Na), % 0 to 0.2
0
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 87 to 91
0
Tungsten (W), % 0
6.3 to 7.0
Vanadium (V), % 3.5 to 4.5
1.8 to 2.3
Residuals, % 0 to 0.4
0