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ASTM B817 Type II vs. S44800 Stainless Steel

ASTM B817 type II belongs to the titanium alloys classification, while S44800 stainless steel belongs to the iron alloys. There are 26 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is ASTM B817 type II and the bottom bar is S44800 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
210
Elongation at Break, % 3.0 to 13
23
Fatigue Strength, MPa 390 to 530
300
Poisson's Ratio 0.32
0.27
Reduction in Area, % 4.0 to 13
45
Shear Modulus, GPa 40
82
Tensile Strength: Ultimate (UTS), MPa 900 to 960
590
Tensile Strength: Yield (Proof), MPa 780 to 900
450

Thermal Properties

Latent Heat of Fusion, J/g 400
300
Maximum Temperature: Mechanical, °C 350
1100
Melting Completion (Liquidus), °C 1580
1460
Melting Onset (Solidus), °C 1530
1410
Specific Heat Capacity, J/kg-K 550
480
Thermal Expansion, µm/m-K 9.9
11

Otherwise Unclassified Properties

Base Metal Price, % relative 37
19
Density, g/cm3 4.6
7.8
Embodied Carbon, kg CO2/kg material 40
3.8
Embodied Energy, MJ/kg 650
52
Embodied Water, L/kg 220
190

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 26 to 120
120
Resilience: Unit (Modulus of Resilience), kJ/m3 2890 to 3890
480
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 34
25
Strength to Weight: Axial, points 55 to 58
21
Strength to Weight: Bending, points 45 to 47
20
Thermal Shock Resistance, points 62 to 66
19

Alloy Composition


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Aluminum (Al), % 5.0 to 6.0
0
Carbon (C), % 0 to 0.1
0 to 0.010
Chlorine (Cl), % 0 to 0.2
0
Chromium (Cr), % 0
28 to 30
Copper (Cu), % 0.35 to 1.0
0 to 0.15
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0.35 to 1.0
62.6 to 66.5
Manganese (Mn), % 0
0 to 0.3
Molybdenum (Mo), % 0
3.5 to 4.2
Nickel (Ni), % 0
2.0 to 2.5
Nitrogen (N), % 0 to 0.040
0 to 0.020
Oxygen (O), % 0 to 0.3
0
Phosphorus (P), % 0
0 to 0.025
Silicon (Si), % 0 to 0.1
0 to 0.2
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