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EN 1.4658 Stainless Steel vs. Grade 12 Titanium

EN 1.4658 stainless steel belongs to the iron alloys classification, while grade 12 titanium belongs to the titanium alloys. There are 29 material properties with values for both materials. Properties with values for just one material (6, 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 12 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 260
170
Elastic (Young's, Tensile) Modulus, GPa 210
110
Elongation at Break, % 28
21
Fatigue Strength, MPa 530
280
Poisson's Ratio 0.27
0.32
Shear Modulus, GPa 81
39
Shear Strength, MPa 580
330
Tensile Strength: Ultimate (UTS), MPa 900
530
Tensile Strength: Yield (Proof), MPa 730
410

Thermal Properties

Latent Heat of Fusion, J/g 300
420
Maximum Temperature: Mechanical, °C 1100
320
Melting Completion (Liquidus), °C 1450
1660
Melting Onset (Solidus), °C 1400
1610
Specific Heat Capacity, J/kg-K 470
540
Thermal Conductivity, W/m-K 16
21
Thermal Expansion, µm/m-K 13
9.6

Otherwise Unclassified Properties

Base Metal Price, % relative 25
37
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
110

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 240
110
Resilience: Unit (Modulus of Resilience), kJ/m3 1280
770
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 25
35
Strength to Weight: Axial, points 32
32
Strength to Weight: Bending, points 26
32
Thermal Diffusivity, mm2/s 4.3
8.5
Thermal Shock Resistance, points 24
37

Alloy Composition


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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
0.2 to 0.4
Nickel (Ni), % 5.5 to 9.5
0.6 to 0.9
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
97.6 to 99.2
Residuals, % 0
0 to 0.4