- Inconel 825 Round Bar
Inconel 825 Round Bar
Inconel 825 is a nickel, chromium and iron alloy with additions of molybdenum, copper and titanium which gives exceptional resistance to many corrosive environments. Titanium oxide is formed in Alloy 825 bar & it provides resistance to localized attacks like pitting & crevice corrosion.
Chemical Properties
GRADE | Cr | Cu | Mo | Co | Al | Ti | C | Fe | Mn | Si | P | S | Ni | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
INCONEL 825 | MIN | 19.5 | 1.5 | 2.5 | – | – | 0.6 | – | 22 | – | – | – | – | 38 |
MAX | 23.5 | 3 | 3.5 | 1 | 0.2 | 1.2 | 0.05 | – | 1 | 0.5 | 0.015 | 0.03 | 46 |
Properties
The levels of copper and molybdenum enable Incoloy 825 Bar to resist reducing acids and its agents. Chemical configuration of these alloy 825 round bar offer great resistance to several corrosive atmospheres, such as crevice corrosion, pitting, stress – corrosion cracking and inter – granular corrosion.
Mechanical Properties
Grade | Tensile Strength | Yield Strength | Elongation |
|---|---|---|---|
[MPA] | [MPA] | (% in 50mm) min | |
Inconel 825 | 586 | 241 | 30 |
Inconel 825 round bar has excellent resistance in chloride medium also used in various applications requiring a combination of high strength and corrosion resistance. Alloy 825 is good in media as diverse as sulphuric, sulphurous, phosphoric, nitric and organic acids, alkalis such as sodium or potassium hydroxide, and acidic chloride solutions.
Physical Properties
Grade | Density (g/cm3) | Melting Point °C | Elastic Modulus (GPa) | Coeff of Thermal Expansion (μm/m/°C) | Thermal Conductivity (W/m.K) | Electrical Resistivity (μΩ.m) |
|---|---|---|---|---|---|---|
27-93°C | ||||||
Incoloy 825 | 8.14 | 1385 | 193 | 14 | 11.1 | 1.13 |
Alloy 825 sheets are used in chemical process vessels, catalytic converters , nuclear fuel reprocessing, radioactive waste handling , marine exhaust. It is similar to SS 800 but has improved resistance to aqueous corrosion. It also has good resistance in neutral chloride media, stress-corrosion cracking and satisfactory resistance to pitting and crevice corrosion.
Specification
The Specification for Alloy 825 bar as per astm Standard is ASTM B 425/ASME SB-425, they are categorised into different form and shape such as Inconel 825 Round Bar, Rod, Channel Bar, T-Bar, Flat Bar, Blocks, Square, bar, Triangle, Threaded, Hex (A/F), Profiles, Half Ingot, Billet, I/H Bar, etc.
When considering wrought stainless round bars, material shall be furnished in the following way such as Hot-worked, Hot-worked and Annealed, Hot-worked- Annealed and cold worked or Hot-worked-Annealed and heat treated.
Round bars depending upon their treatment and their use and application they can also be available in different surface finishes such as Black, Bright Polished, Rough Turned, NO.4 Finish, Matt Finish, BA Finish, 2B, 2D, etc.
Applications
- sea-water-cooled heat exchangers, offshore product piping systems; tubes and components in sour gas service
- air-cooled heat exchangers in petroleum refineries
- food processing
- chemical plant
- combustion-resistant alloy for high pressure O2 applications