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S21603 Stainless Steel vs. Titanium 4-4-2

S21603 stainless steel belongs to the iron alloys classification, while titanium 4-4-2 belongs to the titanium alloys. There are 27 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 S21603 stainless steel and the bottom bar is titanium 4-4-2.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
110
Elongation at Break, % 45
10
Fatigue Strength, MPa 360
590 to 620
Poisson's Ratio 0.28
0.32
Reduction in Area, % 57
20
Shear Modulus, GPa 79
42
Shear Strength, MPa 490
690 to 750
Tensile Strength: Ultimate (UTS), MPa 690
1150 to 1250
Tensile Strength: Yield (Proof), MPa 390
1030 to 1080

Thermal Properties

Latent Heat of Fusion, J/g 290
410
Maximum Temperature: Mechanical, °C 990
310
Melting Completion (Liquidus), °C 1420
1610
Melting Onset (Solidus), °C 1380
1560
Specific Heat Capacity, J/kg-K 480
540
Thermal Expansion, µm/m-K 17
8.6

Otherwise Unclassified Properties

Base Metal Price, % relative 17
39
Density, g/cm3 7.7
4.7
Embodied Carbon, kg CO2/kg material 3.6
30
Embodied Energy, MJ/kg 50
480
Embodied Water, L/kg 160
180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 270
110 to 120
Resilience: Unit (Modulus of Resilience), kJ/m3 380
4700 to 5160
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
34
Strength to Weight: Axial, points 25
68 to 74
Strength to Weight: Bending, points 22
52 to 55
Thermal Shock Resistance, points 15
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), % 17.5 to 22
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 57.6 to 67.8
0 to 0.2
Manganese (Mn), % 7.5 to 9.0
0
Molybdenum (Mo), % 2.0 to 3.0
3.0 to 5.0
Nickel (Ni), % 5.0 to 7.0
0
Nitrogen (N), % 0.25 to 0.5
0 to 0.050
Oxygen (O), % 0
0 to 0.25
Phosphorus (P), % 0 to 0.045
0
Silicon (Si), % 0 to 0.75
0.3 to 0.7
Sulfur (S), % 0 to 0.030
0
Tin (Sn), % 0
1.5 to 2.5
Titanium (Ti), % 0
85.8 to 92.2
Residuals, % 0
0 to 0.4