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EN 1.4658 Stainless Steel vs. Grade 37 Titanium

EN 1.4658 stainless steel belongs to the iron alloys classification, while grade 37 titanium belongs to the titanium alloys. There are 28 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is EN 1.4658 stainless steel and the bottom bar is grade 37 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
110
Elongation at Break, % 28
22
Fatigue Strength, MPa 530
170
Poisson's Ratio 0.27
0.32
Shear Modulus, GPa 81
40
Shear Strength, MPa 580
240
Tensile Strength: Ultimate (UTS), MPa 900
390
Tensile Strength: Yield (Proof), MPa 730
250

Thermal Properties

Latent Heat of Fusion, J/g 300
420
Maximum Temperature: Mechanical, °C 1100
310
Melting Completion (Liquidus), °C 1450
1650
Melting Onset (Solidus), °C 1400
1600
Specific Heat Capacity, J/kg-K 470
550
Thermal Conductivity, W/m-K 16
21
Thermal Expansion, µm/m-K 13
8.9

Otherwise Unclassified Properties

Base Metal Price, % relative 25
36
Density, g/cm3 7.8
4.5
Embodied Carbon, kg CO2/kg material 4.5
31
Embodied Energy, MJ/kg 61
500
Embodied Water, L/kg 200
120

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 240
76
Resilience: Unit (Modulus of Resilience), kJ/m3 1280
280
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 25
35
Strength to Weight: Axial, points 32
24
Strength to Weight: Bending, points 26
26
Thermal Diffusivity, mm2/s 4.3
8.4
Thermal Shock Resistance, points 24
29

Alloy Composition


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Aluminum (Al), % 0
1.0 to 2.0
Carbon (C), % 0 to 0.030
0 to 0.080
Chromium (Cr), % 26 to 29
0
Cobalt (Co), % 0.5 to 2.0
0
Copper (Cu), % 0 to 1.0
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 50.9 to 63.7
0 to 0.3
Manganese (Mn), % 0 to 1.5
0
Molybdenum (Mo), % 4.0 to 5.0
0
Nickel (Ni), % 5.5 to 9.5
0
Nitrogen (N), % 0.3 to 0.5
0 to 0.030
Oxygen (O), % 0
0 to 0.25
Phosphorus (P), % 0 to 0.035
0
Silicon (Si), % 0 to 0.5
0
Sulfur (S), % 0 to 0.010
0
Titanium (Ti), % 0
96.9 to 99
Residuals, % 0
0 to 0.4