Corrosion is described as, “A natural but controllable process” by Gretchen Jacobson (Managing Editor of Materials Performance for NACE International.)
It is a naturally occurring problem, the deterioration of materials due to chemical reactions in the surrounding environment.
Corrosive Resistant Alloys
1. 6Mo Austenitic Stainless Steel (UNS S31266)
The metal 6Mo is often referred to as super-austenitic. This type of stainless steel covers grades with high chromium, nickel and molybdenum content. 6Mo is an alloy that was designed specifically for metallurgical stability and resistance against corrosive substances.
Strengths: Seawater and Organic acids
2. Inconel 625 (UNS N06625)
Strengths: Organic acids, alkaline and salts, seawater, sulfuric and nitric acid
3. Hastelloy C-276 (UNS N10276)
Strengths: Organic acids, alkaline and salts, seawater, sulphuric acid, hydrochloric, hydrofluoric and phosphorus acid, chlorine (wet).
4. Titanium (Grade 2 | UNS R50400)
Strengths: Chlorine (wet), uses for strength to weight ratio, alkaline, salts and seawater.
5. Monel 400 or Alloy 400 (UNS N04400)
Strengths: Seawater, salts and hydrofluoric acid.
The Fight Against Corrosion
Corrosion is a problem for many industries, including the Department of Defence, Energy, Oil and Gas production and transfer – including pipelines.
The industry of water and wastewater is also affected; both public and private companies must protect assets against corrosion.
These assets are main parts of the infrastructure for wastewater plants, such as reservoirs, pumping plants and distribution pipelines – even storage.
The materials that are used in order to fight corrosive media is essential for preventing system failures and other hazardous matters.
If you’re interested in the topic of how to prevent corrosion, check out the links below.