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EN 1.4945 Stainless Steel vs. Grade 33 Titanium

EN 1.4945 stainless steel belongs to the iron alloys classification, while grade 33 titanium belongs to the titanium alloys. There are 30 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 EN 1.4945 stainless steel and the bottom bar is grade 33 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
110
Elongation at Break, % 19 to 34
23
Fatigue Strength, MPa 230 to 350
250
Poisson's Ratio 0.28
0.32
Shear Modulus, GPa 77
41
Shear Strength, MPa 430 to 460
240
Tensile Strength: Ultimate (UTS), MPa 640 to 740
390
Tensile Strength: Yield (Proof), MPa 290 to 550
350

Thermal Properties

Latent Heat of Fusion, J/g 290
420
Maximum Temperature: Mechanical, °C 920
320
Melting Completion (Liquidus), °C 1490
1660
Melting Onset (Solidus), °C 1440
1610
Specific Heat Capacity, J/kg-K 470
540
Thermal Conductivity, W/m-K 14
21
Thermal Expansion, µm/m-K 17
8.7

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.9
3.4
Electrical Conductivity: Equal Weight (Specific), % IACS 3.2
6.9

Otherwise Unclassified Properties

Base Metal Price, % relative 30
55
Density, g/cm3 8.1
4.5
Embodied Carbon, kg CO2/kg material 5.0
33
Embodied Energy, MJ/kg 73
530
Embodied Water, L/kg 150
200

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 130 to 180
86
Resilience: Unit (Modulus of Resilience), kJ/m3 210 to 760
590
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
35
Strength to Weight: Axial, points 22 to 25
24
Strength to Weight: Bending, points 20 to 22
26
Thermal Diffusivity, mm2/s 3.7
8.7
Thermal Shock Resistance, points 14 to 16
30

Alloy Composition

Carbon (C), % 0.040 to 0.1
0 to 0.080
Chromium (Cr), % 15.5 to 17.5
0.1 to 0.2
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 57.9 to 65.7
0 to 0.3
Manganese (Mn), % 0 to 1.5
0
Nickel (Ni), % 15.5 to 17.5
0.35 to 0.55
Niobium (Nb), % 0.4 to 1.2
0
Nitrogen (N), % 0.060 to 0.14
0 to 0.030
Oxygen (O), % 0
0 to 0.25
Palladium (Pd), % 0
0.010 to 0.020
Phosphorus (P), % 0 to 0.035
0
Ruthenium (Ru), % 0
0.020 to 0.040
Silicon (Si), % 0.3 to 0.6
0
Sulfur (S), % 0 to 0.015
0
Titanium (Ti), % 0
98.1 to 99.52
Tungsten (W), % 2.5 to 3.5
0
Residuals, % 0
0 to 0.4