Sanicro® 35 is a high-performance alloy that combines the best features of super austenitic stainless steel and nickel alloys. It offers excellent corrosion resistance, making it ideal for use in seawater applications and other highly corrosive environments. Sanicro® 35 is widely used in heat exchangers and piping systems in refineries and chemical plants.
The environmental benefits of Sanicro® 35 stem from its lower carbon footprint, achieved through a reduced nickel content, resulting in lower cradle-to-gate emissions compared to high-nickel benchmark products like alloy 625.
Replacing 243 heat exchangers in European refineries at end-of-life with Sanicro® 35 instead of benchmark material alloy 625 could reduce CO₂e emissions by approximately 3,700 tonnes.
Estimated savings from replacing 243 heat exchangers across 86 European refineries with Alleima Sanicro® 35, instead of benchmark alloy 625 material. CO₂e savings are based on verified cradle-to-gate LCAs for Sanicro® 35 and Sanicro® 625 (used to represent benchmark material alloy 625), showing lower emissions from material production for Sanicro® 35. Market scaling is derived from the total number of operating heat exchangers in Europe, based on a ratio of approximately 3.53 heat exchangers per Kbbl/cd of production capacity, using benchmarks from Shell's Pernis refinery and data from open EU refineries reported by Concawe. Assumes 0.5% of refinery heat exchangers are made from high-performance alloys such as alloy 625.
All emissions calculations presented are limited to Scope 1 and Scope 2 emissions and selected upstream scope 3 emissions where applicable. These calculations focus on direct emissions from combustion and indirect emissions from electricity consumption. Scope 3 emissions—including upstream fuel production, transmission losses, and lifecycle impacts from manufacturing, maintenance, and disposal—are generally excluded, except in specific cases where upstream material production is explicitly accounted for. For full calculations and sources, please contact us.