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EN 1.4658 Stainless Steel vs. Grade Ti-Pd8A Titanium

EN 1.4658 stainless steel belongs to the iron alloys classification, while grade Ti-Pd8A titanium belongs to the titanium alloys. There are 27 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 1.4658 stainless steel and the bottom bar is grade Ti-Pd8A titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 260
200
Elastic (Young's, Tensile) Modulus, GPa 210
110
Elongation at Break, % 28
13
Fatigue Strength, MPa 530
260
Poisson's Ratio 0.27
0.32
Shear Modulus, GPa 81
40
Tensile Strength: Ultimate (UTS), MPa 900
500
Tensile Strength: Yield (Proof), MPa 730
430

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
8.7

Otherwise Unclassified Properties

Density, g/cm3 7.8
4.5
Embodied Carbon, kg CO2/kg material 4.5
49
Embodied Energy, MJ/kg 61
840
Embodied Water, L/kg 200
520

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 240
65
Resilience: Unit (Modulus of Resilience), kJ/m3 1280
880
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 25
35
Strength to Weight: Axial, points 32
31
Strength to Weight: Bending, points 26
31
Thermal Diffusivity, mm2/s 4.3
8.6
Thermal Shock Resistance, points 24
39

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.1
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 0.25
Manganese (Mn), % 0 to 1.5
0
Molybdenum (Mo), % 4.0 to 5.0
0
Nickel (Ni), % 5.5 to 9.5
0 to 0.050
Nitrogen (N), % 0.3 to 0.5
0
Oxygen (O), % 0
0 to 0.4
Palladium (Pd), % 0
0.12 to 0.3
Phosphorus (P), % 0 to 0.035
0
Silicon (Si), % 0 to 0.5
0
Sulfur (S), % 0 to 0.010
0
Titanium (Ti), % 0
98.8 to 99.9
Residuals, % 0
0 to 0.4