Tag: Corrosion resistance

What is corrosion resistance?

Corrosion resistance refers to the ability of a material to withstand the damaging effects of corrosion, which is the gradual deterioration or degradation of a material due to chemical reactions with its surrounding environment. Corrosion can occur when metals and alloys come into contact with substances like water, air, acids, or salts.

How to select materials for corrosion resistance?

To select materials for corrosion resistance it is important to assess the corrosive environment (temperature, humidity, corrosive substances), identify suitable materials with inherent or engineered corrosion resistance and consider the material’s compatibility, cost, and performance requirements. Finally it is recommended to conduct tests or consult experts if needed for specific applications.

Featured Story: Mannesmann Stainless Tubes, Ready for the future

Stainless Steel World Publisher - January 14, 2021

When Stainless Steel World met with the team at Mannesmann Stainless Tubes, the effects of the Covid-19 pandemic were still evident. Read our Featured Story.

Featured Story – IMOA publishes updated Life Cycle Inventory Dataset

Stainless Steel World Publisher - January 5, 2021

The International Molybdenum Association (IMOA) has published an updated Life Cycle Inventory dataset for Molybdenum Products for Metallurgical Applications.

ESAB offer guidance for welding duplex stainless steels

Stainless Steel World Publisher - January 1, 2021

A team of engineers from ESAB Welding & Cutting Products’ Process Centre in Dubai, United Arab Emirates, demonstrated that the pitting resistance equivalent number (PREN) value of duplex stainless steel alloys may lead to a misleading prediction of pitting corrosion resistance in the as-welded material.

MIMETE releases MARS F51 & MARS F53

Stainless Steel World Publisher - January 1, 2021

MIMETE Srl announced the newest powders from the iron-base family: standard Duplex MARS F51 and Super-duplex MARS F53. Duplex steel F51 is a widely used grade, where the relatively high content of Cr, Mo, and Ni generates better performing mechanical properties when compared to austenitic stainless steel.

The role of stainless steel in offshore applications

Stainless Steel World Publisher - July 14, 2020

Stainless steels, including duplexes and super duplexes are of enormous benefit to the offshore oil and gas industry. They offer reduced weight, increased strength and corrosion resistance, and favourable lifecycle costs, compared to other materials.

Effect of rotational speed on intergranular corrosion resistance of friction welded...

Stainless Steel World Publisher - December 19, 2017

In this research paper super duplex stainless steel SAF 2507 has been selected to investigate the intergranular corrosion resistance of friction welded SDSS SAF 2507 joints. The joints were welded at three different rotational speeds: 700 rpm, 1080 rpm and 1600 rpm and three different friction pressures: 40 Mpa, 69 Mpa and 78 Mpa.

Dursan bio-inert coating for corrosion resistance

Stainless Steel World Publisher - September 27, 2014

Existing techniques for enhancing bio-inertness and protein release such as polyethylene glycol (PEG) systems lack stability and will oxidise in the presence of oxygen, rendering them useless.

Stainless Steel 301 for good corrosion resistance

Stainless Steel World Publisher - June 10, 2013

Stainless Steel 301 is a commonly available austenitic stainless steel having good corrosion resistance and increased amount of carbon to allow for cold working to a range of tempers. Grade 301 stainless steel has high ductility for formed products.

Barksdale control products

Stainless Steel World Publisher - October 6, 2006

The new UNS-RG40 level switch from Barksdale is designed for versatile applications in shipbuilding and plant engineering.

New SS developed

Stainless Steel World Publisher - November 11, 2005

Japanese Daido Steel Co. has announced that it has developed a stainless steel with the world’s highest level of corrosion resistance.

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Factors influencing corrosion

Materials that possess resistance are designed to resist or slow down the process of corrosion, extending the lifespan and maintaining the integrity of the material. Corrosion resistance is an important property in various industries, including construction, manufacturing, automotive, aerospace, and marine.

There are several factors that contribute to corrosion resistance in materials:

• Passive Film: Some materials, like stainless steel and aluminum, form a thin layer called a passive film on their surface when exposed to certain environments. This film acts as a barrier, protecting the underlying material from further corrosion.
• Alloying Elements: The addition of specific elements to a base metal can enhance its corrosion resistance. For example, the addition of chromium to steel forms a protective oxide layer, making it stainless.
• Protective Coatings: Applying coatings such as paints, enamels, or polymer films to the surface of a material can provide a barrier against corrosion-causing substances.
• Inert Materials: Some materials, like gold and platinum, are inherently resistant to corrosion due to their chemical stability and lack of reactivity with most substances.
• Environmental Factors: Corrosion resistance can also depend on the specific environment in which the material is exposed. Factors such as temperature, humidity, acidity, and the presence of pollutants can all affect the rate and type of corrosion.

It’s important to note that while materials can exhibit varying degrees of corrosion resistance, no material is completely immune to corrosion. The goal is to select the most appropriate material for a specific application, considering factors such as the anticipated environment and the expected lifespan of the material. Regular maintenance and preventive measures are also essential in preserving corrosion-resistant properties over time.