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ASTM B817 Type II vs. Grade TDC Steel

ASTM B817 type II belongs to the titanium alloys classification, while grade TDC 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 II and the bottom bar is grade TDC steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
190
Poisson's Ratio 0.32
0.29
Reduction in Area, % 4.0 to 13
50
Shear Modulus, GPa 40
80
Tensile Strength: Ultimate (UTS), MPa 900 to 960
1700

Thermal Properties

Latent Heat of Fusion, J/g 400
250
Maximum Temperature: Mechanical, °C 350
400
Melting Completion (Liquidus), °C 1580
1450
Melting Onset (Solidus), °C 1530
1410
Specific Heat Capacity, J/kg-K 550
470
Thermal Expansion, µm/m-K 9.9
13

Otherwise Unclassified Properties

Base Metal Price, % relative 37
1.9
Density, g/cm3 4.6
7.8
Embodied Carbon, kg CO2/kg material 40
1.4
Embodied Energy, MJ/kg 650
19
Embodied Water, L/kg 220
47

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 34
24
Strength to Weight: Axial, points 55 to 58
60
Strength to Weight: Bending, points 45 to 47
40
Thermal Shock Resistance, points 62 to 66
50

Alloy Composition

Aluminum (Al), % 5.0 to 6.0
0
Carbon (C), % 0 to 0.1
0.6 to 0.75
Chlorine (Cl), % 0 to 0.2
0
Chromium (Cr), % 0
0 to 0.3
Copper (Cu), % 0.35 to 1.0
0 to 0.1
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0.35 to 1.0
98 to 99.4
Manganese (Mn), % 0
0.5 to 1.2
Nitrogen (N), % 0 to 0.040
0
Oxygen (O), % 0 to 0.3
0
Phosphorus (P), % 0
0 to 0.020
Silicon (Si), % 0 to 0.1
0.1 to 0.35
Sodium (Na), % 0 to 0.2
0
Sulfur (S), % 0
0 to 0.020
Tin (Sn), % 1.5 to 2.5
0
Titanium (Ti), % 82.1 to 87.8
0
Vanadium (V), % 5.0 to 6.0
0
Residuals, % 0 to 0.4
0