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S39274 Stainless Steel vs. Titanium 4-4-2

S39274 stainless steel belongs to the iron alloys classification, while titanium 4-4-2 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 S39274 stainless steel and the bottom bar is titanium 4-4-2.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
110
Elongation at Break, % 17
10
Fatigue Strength, MPa 380
590 to 620
Poisson's Ratio 0.27
0.32
Reduction in Area, % 34
20
Shear Modulus, GPa 81
42
Shear Strength, MPa 560
690 to 750
Tensile Strength: Ultimate (UTS), MPa 900
1150 to 1250
Tensile Strength: Yield (Proof), MPa 620
1030 to 1080

Thermal Properties

Latent Heat of Fusion, J/g 300
410
Maximum Temperature: Mechanical, °C 1100
310
Melting Completion (Liquidus), °C 1480
1610
Melting Onset (Solidus), °C 1430
1560
Specific Heat Capacity, J/kg-K 470
540
Thermal Conductivity, W/m-K 16
6.7
Thermal Expansion, µm/m-K 13
8.6

Otherwise Unclassified Properties

Base Metal Price, % relative 24
39
Density, g/cm3 8.0
4.7
Embodied Carbon, kg CO2/kg material 4.3
30
Embodied Energy, MJ/kg 60
480
Embodied Water, L/kg 180
180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140
110 to 120
Resilience: Unit (Modulus of Resilience), kJ/m3 940
4700 to 5160
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
34
Strength to Weight: Axial, points 32
68 to 74
Strength to Weight: Bending, points 26
52 to 55
Thermal Diffusivity, mm2/s 4.2
2.6
Thermal Shock Resistance, points 25
86 to 93

Alloy Composition

Aluminum (Al), % 0
3.0 to 5.0
Carbon (C), % 0 to 0.030
0 to 0.080
Chromium (Cr), % 24 to 26
0
Copper (Cu), % 0.2 to 0.8
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 57 to 65.6
0 to 0.2
Manganese (Mn), % 0 to 1.0
0
Molybdenum (Mo), % 2.5 to 3.5
3.0 to 5.0
Nickel (Ni), % 6.0 to 8.0
0
Nitrogen (N), % 0.24 to 0.32
0 to 0.050
Oxygen (O), % 0
0 to 0.25
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 0 to 0.8
0.3 to 0.7
Sulfur (S), % 0 to 0.020
0
Tin (Sn), % 0
1.5 to 2.5
Titanium (Ti), % 0
85.8 to 92.2
Tungsten (W), % 1.5 to 2.5
0
Residuals, % 0
0 to 0.4