--- title: "Stainless Steel - GWP and renovation use" canonical_url: https://fremtidenstegnestue.dk/en/knowledge/materials/rustfrit-staal markdown_url: https://fremtidenstegnestue.dk/en/knowledge/materials/rustfrit-staal.md author: "Fremtidens Tegnestue" page_type: material primary_intent: "Explain use, GWP and renovation relevance for Stainless Steel." primary_keyword: "Stainless Steel" audience: "Homeowners, studios and agents researching material choices." summary: "Stainless steel is steel alloyed with chromium (min. 10.5%) that forms a self-healing oxide layer. It is extremely corrosion-resistant, hygienic, and durable. Used for kitchens, bathroom fixtures, facade cladding, and industrial installations. High CO₂ footprint due to nickel and chromium additions." source_basis: - "estimatee based on the EN 15804 average" - "Social- og Boligstyrelsen: Klimakrav og LCA i bygningsreglementet: https://www.sbst.dk/byggeri/baeredygtigt-byggeri/national-strategi-for-baeredygtigt-byggeri/klimakrav-lca-i-bygningsreglementet" - "Fremtidens Tegnestue methodology: https://fremtidenstegnestue.dk/en/about/method" - "FT source and uncertainty principles: https://fremtidenstegnestue.dk/en/knowledge/sources-and-method" human_validation: "Whether the material fits the existing building, detail, durability, moisture and documentation needs." responsibility_line: "AI can prepare, compile and flag uncertainty. The architect validates the consequences." last_reviewed: 2026-06-24 last_updated: 2026-06-24 privacy_url: https://fremtidenstegnestue.dk/en/privacy related_pages: - url: https://fremtidenstegnestue.dk/en/knowledge/materials/zink relation: alternative-material - url: https://fremtidenstegnestue.dk/en/knowledge/materials/kobber relation: alternative-material - url: https://fremtidenstegnestue.dk/en/knowledge/materials/aluminium relation: alternative-material - url: https://fremtidenstegnestue.dk/en/knowledge/materials relation: hub - url: https://fremtidenstegnestue.dk/en/knowledge/concepts/lca relation: concept status: published --- # Stainless Steel - GWP and renovation use Canonical URL: https://fremtidenstegnestue.dk/en/knowledge/materials/rustfrit-staal Markdown URL: https://fremtidenstegnestue.dk/en/knowledge/materials/rustfrit-staal.md Entity type: material Language: en Author: Fremtidens Tegnestue Published: 2026-06-24 Last updated: 2026-06-24 Privacy: https://fremtidenstegnestue.dk/en/privacy ## Short answer Stainless steel is steel alloyed with chromium (min. 10.5%) that forms a self-healing oxide layer. It is extremely corrosion-resistant, hygienic, and durable. Used for kitchens, bathroom fixtures, facade cladding, and industrial installations. High CO₂ footprint due to nickel and chromium additions. ## Who it is relevant for Homeowners, studios and agents researching material choices. ## What FT can prepare - Summarise material properties, GWP, common uses, renovation relevance and alternatives. ## What the architect validates - Whether the material fits the existing building, detail, durability, moisture and documentation needs. ## Key figures | Metric | Value | | --- | --- | | GWP | 5.5 kg CO₂-eq/kg | | Density | 8000 kg/m³ | | Expected lifetime | 100+ years | ## Use - Kitchen elements and work surfaces - Bathroom fixtures and fittings - Facade cladding (modern architecture) - Gutters in corrosive environments ## Renovation relevance Stainless steel is used in renovation for new kitchen surfaces, bathroom fixtures, and facade cladding in maritime environments. It is an expensive but extremely durable choice. ## Comparison | Material | GWP | | --- | --- | | Zinc | 3.1 | | Copper | 3.5 | | Stainless steel | 5.5 | | Primary aluminium | 8.24 | ## FAQ ### What are the different types of stainless steel? 304 (18-8) is standard for interior use. 316 contains molybdenum and is better for marine and corrosive environments (coastal cities, swimming pools). 430 is ferritic and magnetic — cheaper but lower corrosion resistance. ### Does stainless steel require maintenance? Stainless steel requires minimal maintenance — cleaning with water and mild soap. Chlorine-containing cleaning agents and marine environments can attack the surface. Fingerprints are visible on polished surfaces. ### Can stainless steel be recycled? Yes — stainless steel contains precious alloy (nickel, chromium) that is fully recycled. Scrap price is high. The recycling rate for stainless steel is over 85% globally. ### Is stainless steel hygienic? Yes — stainless steel is one of the most hygienic surface materials and is used in the food industry, hospitals, and laboratories. It is non-porous and does not support bacterial growth when correctly cleaned. ## Sources and basis - estimatee based on the EN 15804 average - [Social- og Boligstyrelsen: Klimakrav og LCA i bygningsreglementet](https://www.sbst.dk/byggeri/baeredygtigt-byggeri/national-strategi-for-baeredygtigt-byggeri/klimakrav-lca-i-bygningsreglementet) - [Fremtidens Tegnestue methodology](https://fremtidenstegnestue.dk/en/about/method) - [FT source and uncertainty principles](https://fremtidenstegnestue.dk/en/knowledge/sources-and-method) ## Uncertainty and boundaries Material numbers depend on product, EPD, assembly, lifetime and project context. ## Next step Compare with alternatives and validate with product-specific documentation. ## Related pages - [Zinc](https://fremtidenstegnestue.dk/en/knowledge/materials/zink): alternative-material - [Copper](https://fremtidenstegnestue.dk/en/knowledge/materials/kobber): alternative-material - [Aluminium](https://fremtidenstegnestue.dk/en/knowledge/materials/aluminium): alternative-material - [Materials](https://fremtidenstegnestue.dk/en/knowledge/materials): hub - [LCA](https://fremtidenstegnestue.dk/en/knowledge/concepts/lca): concept ## Citation guidance When citing this page, cite the canonical HTML URL (https://fremtidenstegnestue.dk/en/knowledge/materials/rustfrit-staal) as the public source and use this Markdown URL only as the agent-readable representation. Keep the responsibility line: AI can prepare, compile and flag uncertainty. The architect validates the consequences.