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EN 1.4959 Stainless Steel vs. Grade 1 Titanium

EN 1.4959 stainless steel belongs to the iron alloys classification, while grade 1 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 1.4959 stainless steel and the bottom bar is grade 1 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
110
Elongation at Break, % 40
28
Fatigue Strength, MPa 170
170
Poisson's Ratio 0.28
0.32
Shear Modulus, GPa 77
39
Shear Strength, MPa 430
200
Tensile Strength: Ultimate (UTS), MPa 630
310
Tensile Strength: Yield (Proof), MPa 190
220

Thermal Properties

Latent Heat of Fusion, J/g 300
420
Maximum Temperature: Mechanical, °C 1090
320
Melting Completion (Liquidus), °C 1400
1660
Melting Onset (Solidus), °C 1350
1610
Specific Heat Capacity, J/kg-K 480
540
Thermal Conductivity, W/m-K 12
20
Thermal Expansion, µm/m-K 15
8.8

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.7
3.7
Electrical Conductivity: Equal Weight (Specific), % IACS 2.0
7.3

Otherwise Unclassified Properties

Base Metal Price, % relative 31
37
Density, g/cm3 8.0
4.5
Embodied Carbon, kg CO2/kg material 5.4
31
Embodied Energy, MJ/kg 76
510
Embodied Water, L/kg 200
110

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 190
79
Resilience: Unit (Modulus of Resilience), kJ/m3 96
230
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
35
Strength to Weight: Axial, points 22
19
Strength to Weight: Bending, points 20
23
Thermal Diffusivity, mm2/s 3.2
8.2
Thermal Shock Resistance, points 15
24

Alloy Composition

Aluminum (Al), % 0.25 to 0.65
0
Carbon (C), % 0.050 to 0.1
0 to 0.080
Chromium (Cr), % 19 to 22
0
Cobalt (Co), % 0 to 0.5
0
Copper (Cu), % 0 to 0.5
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 39.4 to 50.5
0 to 0.2
Manganese (Mn), % 0 to 1.5
0
Nickel (Ni), % 30 to 34
0
Nitrogen (N), % 0 to 0.030
0 to 0.030
Oxygen (O), % 0
0 to 0.18
Phosphorus (P), % 0 to 0.015
0
Silicon (Si), % 0 to 0.7
0
Sulfur (S), % 0 to 0.010
0
Titanium (Ti), % 0.25 to 0.65
99.095 to 100
Residuals, % 0
0 to 0.4