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ASTM B817 Type II vs. EN 1.4521 Stainless Steel

ASTM B817 type II belongs to the titanium alloys classification, while EN 1.4521 stainless steel belongs to the iron alloys. There are 25 material properties with values for both materials. Properties with values for just one material (8, 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 1.4521 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
200
Elongation at Break, % 3.0 to 13
23
Fatigue Strength, MPa 390 to 530
230
Poisson's Ratio 0.32
0.28
Shear Modulus, GPa 40
78
Tensile Strength: Ultimate (UTS), MPa 900 to 960
520
Tensile Strength: Yield (Proof), MPa 780 to 900
340

Thermal Properties

Latent Heat of Fusion, J/g 400
290
Maximum Temperature: Mechanical, °C 350
930
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
10

Otherwise Unclassified Properties

Base Metal Price, % relative 37
12
Density, g/cm3 4.6
7.7
Embodied Carbon, kg CO2/kg material 40
2.8
Embodied Energy, MJ/kg 650
39
Embodied Water, L/kg 220
130

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 26 to 120
100
Resilience: Unit (Modulus of Resilience), kJ/m3 2890 to 3890
280
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 34
25
Strength to Weight: Axial, points 55 to 58
19
Strength to Weight: Bending, points 45 to 47
19
Thermal Shock Resistance, points 62 to 66
18

Alloy Composition

Aluminum (Al), % 5.0 to 6.0
0
Carbon (C), % 0 to 0.1
0 to 0.025
Chlorine (Cl), % 0 to 0.2
0
Chromium (Cr), % 0
17 to 20
Copper (Cu), % 0.35 to 1.0
0
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0.35 to 1.0
74.6 to 81.1
Manganese (Mn), % 0
0 to 1.0
Molybdenum (Mo), % 0
1.8 to 2.5
Nitrogen (N), % 0 to 0.040
0 to 0.030
Oxygen (O), % 0 to 0.3
0
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 0.1
0 to 1.0
Sodium (Na), % 0 to 0.2
0
Sulfur (S), % 0
0 to 0.015
Tin (Sn), % 1.5 to 2.5
0
Titanium (Ti), % 82.1 to 87.8
0.15 to 0.8
Vanadium (V), % 5.0 to 6.0
0
Residuals, % 0 to 0.4
0