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S21904 Stainless Steel vs. AWS ERTi-1

S21904 stainless steel belongs to the iron alloys classification, while AWS ERTi-1 belongs to the titanium alloys. There are 29 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is S21904 stainless steel and the bottom bar is AWS ERTi-1.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
110
Elongation at Break, % 17 to 51
24
Fatigue Strength, MPa 380 to 550
120
Poisson's Ratio 0.28
0.32
Shear Modulus, GPa 78
41
Tensile Strength: Ultimate (UTS), MPa 700 to 1000
240
Tensile Strength: Yield (Proof), MPa 390 to 910
170

Thermal Properties

Latent Heat of Fusion, J/g 290
420
Maximum Temperature: Mechanical, °C 980
320
Melting Completion (Liquidus), °C 1400
1670
Melting Onset (Solidus), °C 1350
1620
Specific Heat Capacity, J/kg-K 480
540
Thermal Conductivity, W/m-K 14
21
Thermal Expansion, µm/m-K 17
8.7

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.5
3.6
Electrical Conductivity: Equal Weight (Specific), % IACS 2.9
7.1

Otherwise Unclassified Properties

Base Metal Price, % relative 15
37
Density, g/cm3 7.7
4.5
Embodied Carbon, kg CO2/kg material 3.0
31
Embodied Energy, MJ/kg 43
510
Embodied Water, L/kg 160
110

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 160 to 310
52
Resilience: Unit (Modulus of Resilience), kJ/m3 380 to 2070
140
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
35
Strength to Weight: Axial, points 25 to 36
15
Strength to Weight: Bending, points 23 to 29
19
Thermal Diffusivity, mm2/s 3.8
8.7
Thermal Shock Resistance, points 15 to 21
19

Alloy Composition

Carbon (C), % 0 to 0.040
0 to 0.030
Chromium (Cr), % 19 to 21.5
0
Hydrogen (H), % 0
0 to 0.0050
Iron (Fe), % 59.5 to 67.4
0 to 0.080
Manganese (Mn), % 8.0 to 10
0
Nickel (Ni), % 5.5 to 7.5
0
Nitrogen (N), % 0.15 to 0.4
0 to 0.012
Oxygen (O), % 0
0.030 to 0.1
Phosphorus (P), % 0 to 0.045
0
Silicon (Si), % 0 to 1.0
0
Sulfur (S), % 0 to 0.030
0
Titanium (Ti), % 0
99.773 to 99.97