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ASTM B817 Type I vs. SAE-AISI H22 Steel

ASTM B817 type I belongs to the titanium alloys classification, while SAE-AISI H22 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 H22 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
700 to 1920

Thermal Properties

Latent Heat of Fusion, J/g 410
250
Melting Completion (Liquidus), °C 1600
1670
Melting Onset (Solidus), °C 1550
1620
Specific Heat Capacity, J/kg-K 560
440
Thermal Conductivity, W/m-K 7.1
31
Thermal Expansion, µm/m-K 9.6
12

Otherwise Unclassified Properties

Base Metal Price, % relative 36
28
Density, g/cm3 4.4
8.7
Embodied Carbon, kg CO2/kg material 38
4.9
Embodied Energy, MJ/kg 610
73
Embodied Water, L/kg 200
72

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 35
22
Strength to Weight: Axial, points 48 to 60
22 to 61
Strength to Weight: Bending, points 42 to 49
20 to 39
Thermal Diffusivity, mm2/s 2.9
8.2
Thermal Shock Resistance, points 54 to 68
22 to 60

Alloy Composition

Aluminum (Al), % 5.5 to 6.8
0
Carbon (C), % 0 to 0.1
0.3 to 0.4
Chlorine (Cl), % 0 to 0.2
0
Chromium (Cr), % 0
1.8 to 3.8
Copper (Cu), % 0
0 to 0.25
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.4
82.2 to 87.4
Manganese (Mn), % 0
0.15 to 0.4
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 0.4
Sodium (Na), % 0 to 0.2
0
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 87 to 91
0
Tungsten (W), % 0
10 to 11.8
Vanadium (V), % 3.5 to 4.5
0.25 to 0.5
Residuals, % 0 to 0.4
0