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ASTM B817 Type I vs. EN 1.4521 Stainless Steel

ASTM B817 type I belongs to the titanium alloys classification, while EN 1.4521 stainless steel belongs to the iron alloys. There are 29 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is ASTM B817 type I 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, % 4.0 to 13
23
Fatigue Strength, MPa 360 to 520
230
Poisson's Ratio 0.32
0.28
Shear Modulus, GPa 40
78
Tensile Strength: Ultimate (UTS), MPa 770 to 960
520
Tensile Strength: Yield (Proof), MPa 700 to 860
340

Thermal Properties

Latent Heat of Fusion, J/g 410
290
Maximum Temperature: Mechanical, °C 340
930
Melting Completion (Liquidus), °C 1600
1460
Melting Onset (Solidus), °C 1550
1410
Specific Heat Capacity, J/kg-K 560
480
Thermal Conductivity, W/m-K 7.1
23
Thermal Expansion, µm/m-K 9.6
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.0
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.0
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 36
12
Density, g/cm3 4.4
7.7
Embodied Carbon, kg CO2/kg material 38
2.8
Embodied Energy, MJ/kg 610
39
Embodied Water, L/kg 200
130

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 30 to 120
100
Resilience: Unit (Modulus of Resilience), kJ/m3 2310 to 3540
280
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 35
25
Strength to Weight: Axial, points 48 to 60
19
Strength to Weight: Bending, points 42 to 49
19
Thermal Diffusivity, mm2/s 2.9
6.2
Thermal Shock Resistance, points 54 to 68
18

Alloy Composition

Aluminum (Al), % 5.5 to 6.8
0
Carbon (C), % 0 to 0.1
0 to 0.025
Chlorine (Cl), % 0 to 0.2
0
Chromium (Cr), % 0
17 to 20
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.4
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
Titanium (Ti), % 87 to 91
0.15 to 0.8
Vanadium (V), % 3.5 to 4.5
0
Residuals, % 0 to 0.4
0