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.

What is the maximum operating temperature for duplex stainless steel?

Stainless Steel World Publisher -
Most users know that at above 250 °C, duplex grades can be affected by embrittlement caused by spinodal decomposition.
AML3D signs a purchase order with Chevron

AML3D signs a purchase order with Chevron

Stainless Steel World Publisher -
AML3D Limited (AML3D) has entered into a purchase order on standard commercial terms valued at approximately AUD 215,000, with Chevron Australia Pty Ltd
Fine Tubes supply MONEL® alloy 400 for O&G applications

Fine Tubes supply MONEL® alloy 400 for O&G applications

Stainless Steel World Publisher -
Fine Tubes has been granted official approval by Qatargas to supply high-performance tubes in MONEL® alloy 400 for critical oil and gas applications.

NIPPON STEEL Stainless Steel Corporation: Delivering value-added products to customers and...

Stainless Steel World Publisher -
NIPPON STEEL Stainless Steel Corporation’s (NSSC’s) business strategy is to refine its advanced technology to deliver high value-added stainless steel products while also improving the quality and productivity of its generic grades.
norelem expands its range of universal joints

norelem expands its range of universal joints

Stainless Steel World Publisher -
norelem has expanded its range of universal joints to include double stainless-steel joints. Universal joints are designed to connect rigid shafts whose axes are...

High-alloy stainless steel in seawater desalination processes

Stainless Steel World Publisher -
Seawater desalination is an industrial process used to obtain water for drinking, irrigation or industrial use.

Structures for a lifetime – Duplex as a material for bridge...

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The stainless steel industry has long believed duplex to be the perfect material for bridge and storage tank construction. That notion has now been proven by onsite inspections carried out by Outokumpu.

Water and the circular economy

Stainless Steel World Publisher -
The violent contrasts between dry and wet weather of recent months have laid bare the urgent need to build, maintain and upgrade water management infrastructure.

Selecting and using stainless steel filler metals

Stainless Steel World Publisher -
The process of choosing a stainless filler metal involves matching it to the base materials, selectinga shielding gas and often calculating ferrite content and total heat input.
Equinor commissions Fabtech footbridges

Equinor commissions Fabtech footbridges

Stainless Steel World Publisher -
Sverdrup Steel’s partner company Fabtech was commissioned by Equinor to build footbridges to replace the existing footbridges on the Mongstad facility.
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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.

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