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EN 1.4646 Stainless Steel vs. Grade 7 Titanium

EN 1.4646 stainless steel belongs to the iron alloys classification, while grade 7 titanium belongs to the titanium alloys. There are 26 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is EN 1.4646 stainless steel and the bottom bar is grade 7 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 220
150
Elastic (Young's, Tensile) Modulus, GPa 200
110
Elongation at Break, % 34
24
Fatigue Strength, MPa 340
250
Poisson's Ratio 0.28
0.32
Shear Modulus, GPa 77
38
Shear Strength, MPa 500
270
Tensile Strength: Ultimate (UTS), MPa 750
420
Tensile Strength: Yield (Proof), MPa 430
340

Thermal Properties

Latent Heat of Fusion, J/g 290
420
Maximum Temperature: Mechanical, °C 910
320
Melting Completion (Liquidus), °C 1390
1660
Melting Onset (Solidus), °C 1340
1610
Specific Heat Capacity, J/kg-K 480
540
Thermal Expansion, µm/m-K 17
9.2

Otherwise Unclassified Properties

Density, g/cm3 7.7
4.5
Embodied Carbon, kg CO2/kg material 2.8
47
Embodied Energy, MJ/kg 41
800
Embodied Water, L/kg 160
470

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 220
95
Resilience: Unit (Modulus of Resilience), kJ/m3 460
560
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
35
Strength to Weight: Axial, points 27
26
Strength to Weight: Bending, points 24
28
Thermal Shock Resistance, points 16
31

Alloy Composition

Carbon (C), % 0.020 to 0.1
0 to 0.080
Chromium (Cr), % 17 to 19
0
Copper (Cu), % 1.5 to 3.0
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 59 to 67.3
0 to 0.3
Manganese (Mn), % 10.5 to 12.5
0
Molybdenum (Mo), % 0 to 0.5
0
Nickel (Ni), % 3.5 to 4.5
0
Nitrogen (N), % 0.2 to 0.3
0 to 0.030
Oxygen (O), % 0
0 to 0.25
Palladium (Pd), % 0
0.12 to 0.25
Phosphorus (P), % 0 to 0.050
0
Silicon (Si), % 0 to 1.0
0
Sulfur (S), % 0 to 0.015
0
Titanium (Ti), % 0
98.7 to 99.88
Residuals, % 0
0 to 0.4