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S20910 Stainless Steel vs. Grade 7 Titanium

S20910 stainless steel belongs to the iron alloys classification, while grade 7 titanium belongs to the titanium alloys. There are 29 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is S20910 stainless steel and the bottom bar is grade 7 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 230 to 290
150
Elastic (Young's, Tensile) Modulus, GPa 200
110
Elongation at Break, % 14 to 39
24
Fatigue Strength, MPa 310 to 460
250
Poisson's Ratio 0.28
0.32
Reduction in Area, % 56 to 62
34
Shear Modulus, GPa 79
38
Shear Strength, MPa 500 to 570
270
Tensile Strength: Ultimate (UTS), MPa 780 to 940
420
Tensile Strength: Yield (Proof), MPa 430 to 810
340

Thermal Properties

Latent Heat of Fusion, J/g 300
420
Maximum Temperature: Mechanical, °C 1080
320
Melting Completion (Liquidus), °C 1420
1660
Melting Onset (Solidus), °C 1380
1610
Specific Heat Capacity, J/kg-K 480
540
Thermal Conductivity, W/m-K 13
22
Thermal Expansion, µm/m-K 16
9.2

Otherwise Unclassified Properties

Density, g/cm3 7.8
4.5
Embodied Carbon, kg CO2/kg material 4.8
47
Embodied Energy, MJ/kg 68
800
Embodied Water, L/kg 180
470

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120 to 260
95
Resilience: Unit (Modulus of Resilience), kJ/m3 460 to 1640
560
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
35
Strength to Weight: Axial, points 28 to 33
26
Strength to Weight: Bending, points 24 to 27
28
Thermal Diffusivity, mm2/s 3.6
8.9
Thermal Shock Resistance, points 17 to 21
31

Alloy Composition

Carbon (C), % 0 to 0.060
0 to 0.080
Chromium (Cr), % 20.5 to 23.5
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 52.1 to 62.1
0 to 0.3
Manganese (Mn), % 4.0 to 6.0
0
Molybdenum (Mo), % 1.5 to 3.0
0
Nickel (Ni), % 11.5 to 13.5
0
Niobium (Nb), % 0.1 to 0.3
0
Nitrogen (N), % 0.2 to 0.4
0 to 0.030
Oxygen (O), % 0
0 to 0.25
Palladium (Pd), % 0
0.12 to 0.25
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 0.75
0
Sulfur (S), % 0 to 0.030
0
Titanium (Ti), % 0
98.7 to 99.88
Vanadium (V), % 0.1 to 0.3
0
Residuals, % 0
0 to 0.4