About YKWiki

<h2>What YKWiki Is</h2> <p>YKWiki is an independent global steel and alloy grade cross-reference database. We aggregate and structure material property data from published international standards. We are not a materials testing laboratory, engineering firm, or steel supplier. We do not certify materials or provide engineering advice.</p> <h2>Where Our Data Comes From</h2> <ul> <li><strong>ASTM International</strong> — American Society for Testing and Materials standards</li> <li><strong>European Norm (EN)</strong> — European structural and engineering steel standards</li> <li><strong>JIS (Japanese Industrial Standards)</strong> — Japanese steel and alloy specifications</li> <li><strong>GB (Guobiao)</strong> — Chinese national standards for steel and alloys</li> <li><strong>IS (Indian Standards)</strong> — Bureau of Indian Standards material specifications</li> </ul> <p>Each material entry includes yield strength, tensile strength, density, and equivalent grades across standard systems. For materials with completed technical data: chemical composition, physical properties, detailed mechanical properties, heat treatment parameters, and weldability guidance.</p> <h2>How We Work</h2> <p>We cross-reference published standard documents to identify equivalent grades across ASTM, EN, JIS, GB, and IS systems. These equivalences are provided for reference and preliminary material selection. They are not a substitute for formal material certification. Always verify against current Mill Test Reports (MTRs) and consult a qualified engineer for material selection decisions.</p> <h2>Disclaimer</h2> <p>Material grade equivalences are approximate. Always verify specifications against current published standards and Mill Test Reports. This is not professional engineering advice. YKWiki is an informational reference, not a materials testing or certification authority.</p>