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.

Welding conference: call for papers

Stainless Steel World Publisher - November 21, 2001

On 2–3 October 2003 an international conference will held on “Joining of Corrosion Resistant Materialsâ€? in Opatija, Croatia.

CMC to begin stainless cladding

Stainless Steel World Publisher - November 21, 2001

Commercial Metals Co. will construct a facility to develop and manufacture corrosion-resistant stainless steel clad products such as reinforcing bar, dowels and structural shapes for use in construction.

Spence Figure 32, 42, 42A Safety Valves

Stainless Steel World Publisher - November 16, 2001

Spence Engineering Company Inc., Walden, New York, has announced a line of safety valves featuring a stainless steel base and disc which provide longer life, better corrosion resistance and higher set pressure ranges.

Philip Cornes boosts nickel alloy capacity

Stainless Steel World Publisher - November 5, 2001

Philip Cornes, a European distributor of nickel alloys and heat and corrosion-resistant stainless steels, has further increased its flat product processing capability with a new waterjet machining centre.

Improved corrosion resistance for solenoids

Stainless Steel World Publisher - August 24, 2001

A new alloy known as Carpenter Chrome Core® 29 Solenoid Quality stainless may be considered for use in corrosive, high purity environments such as those encountered in the semiconductor manufacturing industry and other corrosive aqueous environments.

Duplex bridge in Bilbao, Spain

Stainless Steel World Publisher - July 24, 2001

A bridge using duplex stainless steel as the main structural element is being constructed in Bilbao, Spain.

Increased corrosion resistance

Stainless Steel World Publisher - April 23, 2001

The Efremov Research Institute of Electrophysical Apparatus (NIIEFA), based in St Petersburg, has developed a technology to increase the wear and corrosion resistance and fatigue strength of different items from metals and alloys by 200–400%.

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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.