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AWS ERTi-7 vs. AISI 403 Stainless Steel

AWS ERTi-7 belongs to the titanium alloys classification, while AISI 403 stainless steel belongs to the iron alloys. There are 28 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is AWS ERTi-7 and the bottom bar is AISI 403 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
190
Elongation at Break, % 20
16 to 25
Fatigue Strength, MPa 190
200 to 340
Poisson's Ratio 0.32
0.28
Shear Modulus, GPa 40
76
Tensile Strength: Ultimate (UTS), MPa 340
530 to 780
Tensile Strength: Yield (Proof), MPa 280
280 to 570

Thermal Properties

Latent Heat of Fusion, J/g 420
270
Maximum Temperature: Mechanical, °C 320
740
Melting Completion (Liquidus), °C 1670
1450
Melting Onset (Solidus), °C 1620
1400
Specific Heat Capacity, J/kg-K 540
480
Thermal Conductivity, W/m-K 21
28
Thermal Expansion, µm/m-K 8.7
9.9

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.6
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 7.3
3.3

Otherwise Unclassified Properties

Density, g/cm3 4.5
7.8
Embodied Carbon, kg CO2/kg material 47
1.9
Embodied Energy, MJ/kg 800
27
Embodied Water, L/kg 470
99

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 64
110 to 120
Resilience: Unit (Modulus of Resilience), kJ/m3 360
210 to 840
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 35
25
Strength to Weight: Axial, points 21
19 to 28
Strength to Weight: Bending, points 24
19 to 24
Thermal Diffusivity, mm2/s 8.8
7.6
Thermal Shock Resistance, points 26
20 to 29

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.15
Chromium (Cr), % 0
11.5 to 13
Hydrogen (H), % 0 to 0.0080
0
Iron (Fe), % 0 to 0.12
84.7 to 88.5
Manganese (Mn), % 0
0 to 1.0
Nickel (Ni), % 0
0 to 0.6
Nitrogen (N), % 0 to 0.015
0
Oxygen (O), % 0.080 to 0.16
0
Palladium (Pd), % 0.12 to 0.25
0
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0
0 to 0.5
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 99.417 to 99.8
0