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EN 1.4938 Stainless Steel vs. Grade C-2 Titanium

EN 1.4938 stainless steel belongs to the iron alloys classification, while grade C-2 titanium belongs to the titanium alloys. There are 29 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is EN 1.4938 stainless steel and the bottom bar is grade C-2 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
110
Elongation at Break, % 16 to 17
17
Fatigue Strength, MPa 390 to 520
200
Poisson's Ratio 0.28
0.32
Shear Modulus, GPa 76
40
Tensile Strength: Ultimate (UTS), MPa 870 to 1030
390
Tensile Strength: Yield (Proof), MPa 640 to 870
310

Thermal Properties

Latent Heat of Fusion, J/g 270
420
Maximum Temperature: Mechanical, °C 750
320
Melting Completion (Liquidus), °C 1460
1660
Melting Onset (Solidus), °C 1420
1610
Specific Heat Capacity, J/kg-K 470
540
Thermal Conductivity, W/m-K 30
21
Thermal Expansion, µm/m-K 11
8.7

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.9
3.6
Electrical Conductivity: Equal Weight (Specific), % IACS 3.3
7.1

Otherwise Unclassified Properties

Base Metal Price, % relative 10
37
Density, g/cm3 7.8
4.5
Embodied Carbon, kg CO2/kg material 3.3
31
Embodied Energy, MJ/kg 47
510
Embodied Water, L/kg 110
110

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140 to 160
61
Resilience: Unit (Modulus of Resilience), kJ/m3 1050 to 1920
460
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
35
Strength to Weight: Axial, points 31 to 37
24
Strength to Weight: Bending, points 26 to 29
26
Thermal Diffusivity, mm2/s 8.1
8.8
Thermal Shock Resistance, points 30 to 35
30

Alloy Composition


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Carbon (C), % 0.080 to 0.15
0 to 0.1
Chromium (Cr), % 11 to 12.5
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 80.5 to 84.8
0 to 0.2
Manganese (Mn), % 0.4 to 0.9
0
Molybdenum (Mo), % 1.5 to 2.0
0
Nickel (Ni), % 2.0 to 3.0
0 to 0.050
Nitrogen (N), % 0.020 to 0.040
0
Oxygen (O), % 0
0 to 0.4
Phosphorus (P), % 0 to 0.025
0
Silicon (Si), % 0 to 0.5
0
Sulfur (S), % 0 to 0.015
0
Titanium (Ti), % 0
98.8 to 100
Vanadium (V), % 0.25 to 0.4
0
Residuals, % 0
0 to 0.4