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ASTM B817 Type II vs. SAE-AISI 1038 Steel

ASTM B817 type II belongs to the titanium alloys classification, while SAE-AISI 1038 steel belongs to the iron alloys. There are 26 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is ASTM B817 type II and the bottom bar is SAE-AISI 1038 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
190
Elongation at Break, % 3.0 to 13
14 to 20
Fatigue Strength, MPa 390 to 530
220 to 350
Poisson's Ratio 0.32
0.29
Reduction in Area, % 4.0 to 13
40 to 45
Shear Modulus, GPa 40
73
Tensile Strength: Ultimate (UTS), MPa 900 to 960
590 to 640
Tensile Strength: Yield (Proof), MPa 780 to 900
320 to 540

Thermal Properties

Latent Heat of Fusion, J/g 400
250
Maximum Temperature: Mechanical, °C 350
400
Melting Completion (Liquidus), °C 1580
1460
Melting Onset (Solidus), °C 1530
1420
Specific Heat Capacity, J/kg-K 550
470
Thermal Expansion, µm/m-K 9.9
12

Otherwise Unclassified Properties

Base Metal Price, % relative 37
1.8
Density, g/cm3 4.6
7.8
Embodied Carbon, kg CO2/kg material 40
1.4
Embodied Energy, MJ/kg 650
18
Embodied Water, L/kg 220
46

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 26 to 120
83 to 100
Resilience: Unit (Modulus of Resilience), kJ/m3 2890 to 3890
270 to 790
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 34
24
Strength to Weight: Axial, points 55 to 58
21 to 23
Strength to Weight: Bending, points 45 to 47
20 to 21
Thermal Shock Resistance, points 62 to 66
19 to 20

Alloy Composition


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Aluminum (Al), % 5.0 to 6.0
0
Carbon (C), % 0 to 0.1
0.35 to 0.42
Chlorine (Cl), % 0 to 0.2
0
Copper (Cu), % 0.35 to 1.0
0
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0.35 to 1.0
98.6 to 99.05
Manganese (Mn), % 0
0.6 to 0.9
Nitrogen (N), % 0 to 0.040
0
Oxygen (O), % 0 to 0.3
0
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 0.1
0
Sodium (Na), % 0 to 0.2
0
Sulfur (S), % 0
0 to 0.050
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