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The independent metal encyclopedia.
Understand metals, compare grades, verify standards, and specify materials with clearer technical and procurement context.
Knowledge collections
Start with a material family
Each collection connects families, grades, product forms, fabrication, corrosion behavior, standards, and buying checks.
Stainless steel
10 reviewed grade guides
Open collection →02 · Live collectionCarbon & structural steel
Structural, pressure, and engineering grades
Open collection →03 · Live collectionAlloy steel
Engineering and heat-treated grades
Open collection →04 · Live collectionAluminum alloys
Series, tempers, sheet, plate, and foil
Open collection →05 · Live collectionCopper alloys
Copper, brass, and bronze families
Open collection →06 · Live collectionGalvanized & coated steel
Substrates, coatings, and supply forms
Open collection →Reviewed grade collection
Stainless steel, compared with context.
Browse austenitic, ferritic, duplex, and precipitation-hardening grades. Every guide separates reference values from guaranteed purchase requirements.
Compare all 10 gradesProject-led research
Start from an application, not only a grade.
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