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ASTM B817 Type II vs. Grade VDSiCr Steel

ASTM B817 type II belongs to the titanium alloys classification, while grade VDSiCr 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 VDSiCr 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
48
Shear Modulus, GPa 40
80
Tensile Strength: Ultimate (UTS), MPa 900 to 960
1950

Thermal Properties

Latent Heat of Fusion, J/g 400
270
Maximum Temperature: Mechanical, °C 350
410
Melting Completion (Liquidus), °C 1580
1440
Melting Onset (Solidus), °C 1530
1400
Specific Heat Capacity, J/kg-K 550
480
Thermal Expansion, µm/m-K 9.9
13

Otherwise Unclassified Properties

Base Metal Price, % relative 37
2.2
Density, g/cm3 4.6
7.7
Embodied Carbon, kg CO2/kg material 40
1.5
Embodied Energy, MJ/kg 650
20
Embodied Water, L/kg 220
48

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 34
25
Strength to Weight: Axial, points 55 to 58
70
Strength to Weight: Bending, points 45 to 47
45
Thermal Shock Resistance, points 62 to 66
58

Alloy Composition


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Aluminum (Al), % 5.0 to 6.0
0
Carbon (C), % 0 to 0.1
0.5 to 0.6
Chlorine (Cl), % 0 to 0.2
0
Chromium (Cr), % 0
0.5 to 0.8
Copper (Cu), % 0.35 to 1.0
0 to 0.060
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0.35 to 1.0
96.6 to 97.8
Manganese (Mn), % 0
0.5 to 0.9
Nitrogen (N), % 0 to 0.040
0
Oxygen (O), % 0 to 0.3
0
Phosphorus (P), % 0
0 to 0.025
Silicon (Si), % 0 to 0.1
1.2 to 1.6
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