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ASTM B817 Type II vs. EN 1.4408 Stainless Steel

ASTM B817 type II belongs to the titanium alloys classification, while EN 1.4408 stainless steel belongs to the iron alloys. There are 25 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 EN 1.4408 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
200
Elongation at Break, % 3.0 to 13
34
Fatigue Strength, MPa 390 to 530
170
Poisson's Ratio 0.32
0.28
Shear Modulus, GPa 40
78
Tensile Strength: Ultimate (UTS), MPa 900 to 960
510
Tensile Strength: Yield (Proof), MPa 780 to 900
210

Thermal Properties

Latent Heat of Fusion, J/g 400
300
Maximum Temperature: Mechanical, °C 350
990
Melting Completion (Liquidus), °C 1580
1440
Melting Onset (Solidus), °C 1530
1390
Specific Heat Capacity, J/kg-K 550
480
Thermal Expansion, µm/m-K 9.9
16

Otherwise Unclassified Properties

Base Metal Price, % relative 37
18
Density, g/cm3 4.6
7.8
Embodied Carbon, kg CO2/kg material 40
3.7
Embodied Energy, MJ/kg 650
52
Embodied Water, L/kg 220
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 26 to 120
140
Resilience: Unit (Modulus of Resilience), kJ/m3 2890 to 3890
110
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 34
25
Strength to Weight: Axial, points 55 to 58
18
Strength to Weight: Bending, points 45 to 47
18
Thermal Shock Resistance, points 62 to 66
11

Alloy Composition

Aluminum (Al), % 5.0 to 6.0
0
Carbon (C), % 0 to 0.1
0 to 0.070
Chlorine (Cl), % 0 to 0.2
0
Chromium (Cr), % 0
18 to 20
Copper (Cu), % 0.35 to 1.0
0
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0.35 to 1.0
62.4 to 71
Manganese (Mn), % 0
0 to 1.5
Molybdenum (Mo), % 0
2.0 to 2.5
Nickel (Ni), % 0
9.0 to 12
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 to 1.5
Sodium (Na), % 0 to 0.2
0
Sulfur (S), % 0
0 to 0.030
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