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ASTM International develops international standards for materials, products, systems and services used in construction, manufacturing and transportation. ASTM standard specifications and test methods define uniform requirements and procedures.

Site with useful articles about all aspects of metals and metals businesses, as well as a blog highlighting key metals market and industry news.

The Timken Company is a global manufacturer and supplier of Bearings, Alloy Steel, Power Transmission Components, Engineered Surfaces, Lubrication, Seals, Motion Control Systems, Services

KEY to METALS is the world’s most comprehensive database and knowledge source for steel and nonferrous metals properties and cross-references, with more than 4,000,000 property records for over 150,000 alloys from all over the world.

HowStuffWorks Science has explanations and colorful illustrations related to earth science, life science, and other wonders of the physical world.

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Stainless Sales is THE source for stainless steel strip coil.

A totally free access materials knowledge base and news service for the engineering, design and materials community worldwide. Content includes the whole materials spectrum of Metals, Ceramics, Polymers and Composites.

Supplying stainless steel plate products from machined rings, discs, plate flanges and tubesheets to cnc plasma and saw cut rectangles and custom shapes.