India is investing at a scale that will shape its economic and infrastructure landscape for decades to come. Roads, bridges, metros, ports, airports, water systems and industrial facilities are being built across the country. The success of this investment, however, will depend not only on how quickly these assets are delivered, but on how long they remain safe, functional and productive. Corrosion is an often overlooked threat to that long-term value.The recent CII NRI Report on the economic impact of corrosion estimates that corrosion costs India’s infrastructure sector ₹1.42 lakh crore every year, equivalent to about 2.9 per cent of the sector’s GDP. The report also estimates that better prevention could save up to ₹49,580 crore annually in infrastructure alone. Across the economy, potential savings could reach ₹4.95 lakh crore, or about 1.5 per cent of GDP.These numbers make one thing clear. Corrosion is not merely a maintenance problem. It is an economic and infrastructure issue that reduces asset life, increases repair and rehabilitation costs, affects safety and productivity, and ultimately weakens the return on capital invested in infrastructure.
The most effective response is to address corrosion before it starts. Too often, corrosion protection is considered after deterioration becomes visible. By that stage, the available options are largely reactive, involving repairs, replacement, protective coatings or structural rehabilitation.The CII NRI report argues that a significant part of the corrosion burden can instead be addressed before an asset is built, through better specifications, material selection and protection systems. It recommends exposure-based corrosion protection requirements, service life frameworks for steel, modern testing methods and stronger inspection and enforcement.
This means corrosion risk needs to become part of project planning and design. An asset located in a coastal area does not face the same conditions as one in a dry inland ecosystem. High humidity, chlorides, industrial chemicals and other environmental conditions can significantly influence material performance. These factors need to be considered when engineers define specifications, select materials, and establish the expected service life of an asset.
This also requires a shift in how infrastructure costs are evaluated. The lowest upfront material price does not necessarily represent the lowest project cost. A material that requires frequent maintenance, recoating, replacement or rehabilitation can become considerably more expensive over the asset’s life. There are also indirect costs from downtime, traffic disruption, operational interruptions and repeated demands on public maintenance budgets.Infrastructure procurement therefore needs to move towards lifecycle costing. Durability, maintenance frequency, replacement requirements, downtime, safety and expected service life should be considered alongside the initial purchase price. The objective should be to identify the solution that delivers the greatest value over the full life of the asset, rather than the lowest cost at the time of construction.
Corrosion-resistant materials have an important role in this approach. Stainless steel, for instance, combines corrosion resistance, durability and low maintenance requirements, making it suitable for demanding applications where long-term performance is critical.
Its use is expanding across transport, water infrastructure, industrial applications and other sectors. India’s stainless steel consumption reached about 4.8 million tonnes in FY25, reflecting the growing role of the material in the country’s infrastructure and industrial development.
The CII NRI report points to a significant policy gap, noting that Indian regulations often recognise corrosion protection measures but leave their adoption optional in several situations. Industry standards and project specifications should therefore move towards clearly defined corrosion protection requirements.hese should address material performance, environmental exposure, testing, fabrication, installation and inspection, with effective compliance mechanisms. Such standards would give engineers, project owners and procurement teams a more consistent framework for making lifecycle-based decisions.
India has rightly focused on building infrastructure faster and at greater scale. The next priority must be ensuring that these assets deliver the performance and service life for which they were designed. The true cost of infrastructure is not the cost of construction alone. It is the total cost of building, operating, maintaining and eventually replacing an asset.
Corrosion prevention must therefore move from reactive maintenance to proactive design, from upfront price to lifecycle value, and from discretionary protection to stronger standards and specifications. For a country investing as heavily in infrastructure as India is today, preventing corrosion is ultimately about protecting capital, extending asset life and ensuring that every infrastructure investment delivers its full economic value.
