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EN 1.3956 Stainless Steel vs. Grade 27 Titanium

EN 1.3956 stainless steel belongs to the iron alloys classification, while grade 27 titanium belongs to the titanium 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 EN 1.3956 stainless steel and the bottom bar is grade 27 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
110
Elongation at Break, % 27
27
Fatigue Strength, MPa 240
170
Poisson's Ratio 0.28
0.32
Shear Modulus, GPa 79
41
Tensile Strength: Ultimate (UTS), MPa 650
270
Tensile Strength: Yield (Proof), MPa 330
230

Thermal Properties

Latent Heat of Fusion, J/g 300
420
Maximum Temperature: Mechanical, °C 1080
320
Melting Completion (Liquidus), °C 1420
1660
Melting Onset (Solidus), °C 1380
1610
Specific Heat Capacity, J/kg-K 480
540
Thermal Expansion, µm/m-K 13
8.7

Otherwise Unclassified Properties

Base Metal Price, % relative 22
37
Density, g/cm3 7.8
4.5
Embodied Carbon, kg CO2/kg material 4.8
33
Embodied Energy, MJ/kg 68
530
Embodied Water, L/kg 180
320

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 150
70
Resilience: Unit (Modulus of Resilience), kJ/m3 270
240
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
35
Strength to Weight: Axial, points 23
17
Strength to Weight: Bending, points 21
21
Thermal Shock Resistance, points 18
21

Alloy Composition

Carbon (C), % 0 to 0.060
0 to 0.080
Chromium (Cr), % 20.5 to 23.5
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 51.9 to 62.1
0 to 0.2
Manganese (Mn), % 4.0 to 6.0
0
Molybdenum (Mo), % 1.5 to 3.0
0
Nickel (Ni), % 11.5 to 13.5
0
Niobium (Nb), % 0.1 to 0.3
0
Nitrogen (N), % 0.2 to 0.4
0 to 0.030
Oxygen (O), % 0
0 to 0.18
Phosphorus (P), % 0 to 0.040
0
Ruthenium (Ru), % 0
0.080 to 0.14
Silicon (Si), % 0 to 1.0
0
Sulfur (S), % 0 to 0.030
0
Titanium (Ti), % 0
99 to 99.92
Vanadium (V), % 0.1 to 0.3
0
Residuals, % 0
0 to 0.4