Properties
General
| Property | Value |
|---|---|
Density | 7.88 g/cm³ Show Supplier Material materials with Density of 7.88 g/cm³ |
Mechanical
| Property | Temperature | Value |
|---|---|---|
Charpy impact energy, V-notch | -195 °C | 75 J Show Supplier Material materials with Charpy impact energy, V-notch of 75 J |
-40 °C | 255 J Show Supplier Material materials with Charpy impact energy, V-notch of 255 J | |
20 °C | 270 J Show Supplier Material materials with Charpy impact energy, V-notch of 270 J | |
Elastic modulus | 20 °C | 200 GPa Show Supplier Material materials with Elastic modulus of 200 GPa |
200 °C | 180 GPa Show Supplier Material materials with Elastic modulus of 180 GPa | |
Elongation | -195 °C | 41 % Show Supplier Material materials with Elongation of 41 % |
-70 °C | 49 % Show Supplier Material materials with Elongation of 49 % | |
20 °C | 45 % Show Supplier Material materials with Elongation of 45 % | |
200 °C | 38 % Show Supplier Material materials with Elongation of 38 % | |
800 °C | 55 % Show Supplier Material materials with Elongation of 55 % | |
Hardness, Rockwell B | 95.0 [-] Show Supplier Material materials with Hardness, Rockwell B of 95.0 [-] | |
Tensile strength | -195 °C | 1550 MPa Show Supplier Material materials with Tensile strength of 1550 MPa |
-70 °C | 1000 MPa Show Supplier Material materials with Tensile strength of 1000 MPa | |
20 °C | 830 MPa Show Supplier Material materials with Tensile strength of 830 MPa | |
200 °C | 650 MPa Show Supplier Material materials with Tensile strength of 650 MPa | |
800 °C | 350 MPa Show Supplier Material materials with Tensile strength of 350 MPa |
Thermal
| Property | Temperature | Value | Comment |
|---|---|---|---|
Coefficient of thermal expansion | 0.0000172 1/K Show Supplier Material materials with Coefficient of thermal expansion of 0.0000172 1/K | 20 to 200°C | |
Specific heat capacity | 500 J/(kg·K) Show Supplier Material materials with Specific heat capacity of 500 J/(kg·K) | ||
Thermal conductivity | 20 °C | 15 W/(m·K) Show Supplier Material materials with Thermal conductivity of 15 W/(m·K) | |
200 °C | 16 W/(m·K) Show Supplier Material materials with Thermal conductivity of 16 W/(m·K) |
Electrical
| Property | Value |
|---|---|
Electrical resistivity | 8.2e-07 Ω·m Show Supplier Material materials with Electrical resistivity of 8.2e-07 Ω·m |
Magnetic
| Property | Temperature | Value | Comment |
|---|---|---|---|
Relative magnetic permeability | -260 °C | 1.008 [-] Show Supplier Material materials with Relative magnetic permeability of 1.008 [-] | under 16 kA/m |
-120 °C | 1.0025 [-] Show Supplier Material materials with Relative magnetic permeability of 1.0025 [-] | under 16 kA/m | |
20 °C | 1.004 [-] Show Supplier Material materials with Relative magnetic permeability of 1.004 [-] | under 16 kA/m |
Chemical properties
| Property | Value | Comment |
|---|---|---|
Carbon | 0.06 Show Supplier Material materials with Carbon of 0.06 | max. |
Chromium | 20.5 - 23.5 % Show Supplier Material materials with Chromium of 20.5 - 23.5 % | |
Manganese | 4.0 - 6.0 % Show Supplier Material materials with Manganese of 4.0 - 6.0 % | |
Molybdenum | 2.0 - 3.0 % Show Supplier Material materials with Molybdenum of 2.0 - 3.0 % | |
Nickel | 11.5 - 13.5 % Show Supplier Material materials with Nickel of 11.5 - 13.5 % | |
Niobium | 0.1 - 0.30000000000000004 % Show Supplier Material materials with Niobium of 0.1 - 0.30000000000000004 % | |
Nitrogen | 0.2 - 0.4 % Show Supplier Material materials with Nitrogen of 0.2 - 0.4 % | |
Phosphorus | 0.04 Show Supplier Material materials with Phosphorus of 0.04 | max. |
Silicon | 0.75 Show Supplier Material materials with Silicon of 0.75 | max. |
Sulfur | 0.03 Show Supplier Material materials with Sulfur of 0.03 | max. |
Vanadium | 0.1 - 0.30000000000000004 % Show Supplier Material materials with Vanadium of 0.1 - 0.30000000000000004 % |
Technological properties
| Property | ||
|---|---|---|
| Application areas | In accordance with NACE MR0175, this grade can be used up to a hardness of 35HRc for applications in the oil industry in an H₂S environment. | |
| Corrosion properties | Generalized corrosion: The tests carried out in a 2M sulfur environment indicate an hourly mass loss. For this type of corrosion, the UGI® 209's resistance is very good: slightly lower than that of UGI®904L but significantly higher than that of UGI® 316L. Localized corrosion Intercrystalline corrosion: UGI® 209 resists the standardized ASTM A262 test, Method E (CuSO4 + H₂SO₄ + Cu environment), and no cracking is observed after 24 hours of testing and after bending on a mandrel to 180°. Pitting corrosion: The tests carried out in accordance with standard ASTM G48, Method E, make it possible to determine the maximum usage temperature without corrosion. The UGI® 209's resistance is much higher than that of the UGI® 316 L grade. P.R.E.N index, guaranteed pitting corrosion resistance : > 31 The tests carried out in accordance with standard ASTM G48, Method A, make it possible to compare the Mass loss of one or several grades. The UGI® 209's resistance is much higher than that of UGI® 316L. Pitting potential: The tests carried out in an NaCl environment with different concentrations and temperatures demonstrate the excellent behavior of UGI® 209 compared with UGI® 316L. Crevice corrosion: The depassivation pH of the different grades in a NaCl (2M) solution at 23°C was determined. This test was introduced to report on the crevice corrosion phenomena. Its result corresponds to the pH below which the passive layer dissolves. The test values for the depassivation pH show the good resistance of UGI® 209. Stress corrosion: The NACE MR0175/ISO15156 test consists in determining the breaking conditions for standardized specimens. The usage limit for UGI® 209 given by the NACE MR0175/ISO15156 (condition 1 bar of H₂S in the NACE A solution) is T= 66°C. Our experimental tests show that UGI® 209 easily meets the test criteria, since no Fracture occurs at 60°C or even at 70°C. However, superficial cracks are visible at 70°C. (See the figure on the right side of the material page) | |
| General machinability | The UGI® 209 is machined with the same equipment as the standard austenitic grades (AISI 304, 316), with the cutting conditions reduced by half. Due to the hardening of the grade through cold hardening, the use of carbide-coated tools is recommended. Ugitech will soon be distributing a specific guide on the subject. | |
| Heat Treatment | Annealing solution We recommend performing the solution annealing and return to solution at a temperature between 1050 and 1100°C. For large sections, solution annealing and rapid water quenching is recommended. | |
| Hot forming | UGI® 209 is suitable for forging, with the same equipment as that used for the 300 series austenitic steels, at higher power levels. No pre-heating is required. Heating to roughly 1200°C is recommended before the hot transformation, followed by rapid cooling. To guarantee good corrosion resistance results after forging, a treatment involving a return to a solution at about 1100°C followed by a solution annealing and rapid water quenching is preferable. | |
| Other | In accordance with NACE MR0175, this grade can be used up to a hardness of 35HRc for applications in the oil industry in an H₂S environment. Available products: Other formats: contact the supplier | |
| Surface Treatment | The pickling conditions for UGI® 209 are similar to those for a type AISI 904L steel.This grade can be electropolished. | |
| Welding | The UGI® 209 grade can be easily welded using the appropriate settings for standard austenitic steels. The liquid zone should be protected from the ambient nitrogen to maintain a good level of intercrystalline corrosion resistance. While the 209 filler metal has the best properties, grades of the AISI 308L and AISI 309 type can also be used. After welding, to achieve the best performance we recommend a treatment in a solution at 1120°C followed by rapid cooling. | |