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ASTM B817 Type II vs. S39274 Stainless Steel

ASTM B817 type II belongs to the titanium alloys classification, while S39274 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 S39274 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
210
Elongation at Break, % 3.0 to 13
17
Fatigue Strength, MPa 390 to 530
380
Poisson's Ratio 0.32
0.27
Reduction in Area, % 4.0 to 13
34
Shear Modulus, GPa 40
81
Tensile Strength: Ultimate (UTS), MPa 900 to 960
900
Tensile Strength: Yield (Proof), MPa 780 to 900
620

Thermal Properties

Latent Heat of Fusion, J/g 400
300
Maximum Temperature: Mechanical, °C 350
1100
Melting Completion (Liquidus), °C 1580
1480
Melting Onset (Solidus), °C 1530
1430
Specific Heat Capacity, J/kg-K 550
470
Thermal Expansion, µm/m-K 9.9
13

Otherwise Unclassified Properties

Base Metal Price, % relative 37
24
Density, g/cm3 4.6
8.0
Embodied Carbon, kg CO2/kg material 40
4.3
Embodied Energy, MJ/kg 650
60
Embodied Water, L/kg 220
180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 26 to 120
140
Resilience: Unit (Modulus of Resilience), kJ/m3 2890 to 3890
940
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 34
25
Strength to Weight: Axial, points 55 to 58
32
Strength to Weight: Bending, points 45 to 47
26
Thermal Shock Resistance, points 62 to 66
25

Alloy Composition

Aluminum (Al), % 5.0 to 6.0
0
Carbon (C), % 0 to 0.1
0 to 0.030
Chlorine (Cl), % 0 to 0.2
0
Chromium (Cr), % 0
24 to 26
Copper (Cu), % 0.35 to 1.0
0.2 to 0.8
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0.35 to 1.0
57 to 65.6
Manganese (Mn), % 0
0 to 1.0
Molybdenum (Mo), % 0
2.5 to 3.5
Nickel (Ni), % 0
6.0 to 8.0
Nitrogen (N), % 0 to 0.040
0.24 to 0.32
Oxygen (O), % 0 to 0.3
0
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0 to 0.1
0 to 0.8
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
Tungsten (W), % 0
1.5 to 2.5
Vanadium (V), % 5.0 to 6.0
0
Residuals, % 0 to 0.4
0