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Responsible Steel
https://www.responsiblesteel.org/
We are a global not-for-profit multistakeholder standard and certification initiative. Our mission is to be a driving force in the socially and environmentally responsible production of net-zero steel, globally. Building a sustainable steel industry requires cooperation and mutual commitment from companies at all levels of the steel supply chain, representatives of civil society, and other stakeholders. We provide the forum for this multi-stakeholder approach. Our members include some of the leading players in the industry working together to minimise the impact of steel manufacturing on people and the planet.
https://www.responsiblesteel.org/
We are a global not-for-profit multistakeholder standard and certification initiative. Our mission is to be a driving force in the socially and environmentally responsible production of net-zero steel, globally. Building a sustainable steel industry requires cooperation and mutual commitment from companies at all levels of the steel supply chain, representatives of civil society, and other stakeholders. We provide the forum for this multi-stakeholder approach. Our members include some of the leading players in the industry working together to minimise the impact of steel manufacturing on people and the planet.
What is a Heat Number?
https://en.wikipedia.org/wiki/Heat_number
A heat number is an identification coupon number that is stamped on a material plate after it is removed from the ladle and rolled at a steel mill. Industry quality standards require materials to be tested at the manufacturer and the results of these tests be submitted through a report, also called a mill sheet, mill certificate or mill test certificate (MTC). The only way to trace a steel plate back to its mill sheet is the heat number. A heat number is similar to a lot number, which is used to identify production runs of any other product for quality control purposes.
https://en.wikipedia.org/wiki/Heat_number
A heat number is an identification coupon number that is stamped on a material plate after it is removed from the ladle and rolled at a steel mill. Industry quality standards require materials to be tested at the manufacturer and the results of these tests be submitted through a report, also called a mill sheet, mill certificate or mill test certificate (MTC). The only way to trace a steel plate back to its mill sheet is the heat number. A heat number is similar to a lot number, which is used to identify production runs of any other product for quality control purposes.
Material Traceability
https://www.xometry.com/resources/shop-tips/understanding-material-traceability/
https://www.xometry.com/resources/shop-tips/understanding-material-traceability/
What is Material Traceability?
At its simplest, material traceability is the process of ensuring that the materials that make up all the parts on a finished product have records spanning back to their production. This is often achieved with a paper trail. Material traceability must not be confused with product traceability which allows more granular tracking of the product and can include details such as when it was manufactured, who manufactured it, and which machines were used.
The process of making a product materially traceable starts with the procurement of the required materials. These materials should be delivered with a batch certificate, material certificate, or mill test report (MTR). Despite the different names, these documents refer to essentially the same thing.
In the case of metals, the material certificate allows for the tracking of the material all the way to the specific ladle of molten metal used. The number used to identify a specific batch or “heat” of molten metal is called the heat number. In addition to this, the material certificate will indicate the date the material was cast, the elemental makeup, results of mechanical tests, and the standards with which it complies, amongst other details. Most materials that have verified mechanical properties will have a material certificate and associated heat number. In the case of plastics, the term, “batch certificate,” is often used instead.
A material certificate is important as it proves that the material meets its standardized properties. After all, engineers select the specific grade of stock based on its mechanical properties and need confirmation that the batch they receive is up to spec. The material certificate exists as proof that the material has been manufactured according to the relevant standards. It therefore must be linked to the material via a permanent label on the material itself. This can come in the form of hard-punching, tags, indelible paint, or (in the case of plastic) stickers.