What is a heat number in steel?

A heat number or heat lot is an identification number that is stamped on a material plate to prove it meets industry quality standards, which require materials to be tested by the manufacturer. These numbers are used to identify production runs for quality control purposes.

What is the difference between heat number and heat code?

A heat number, also called heat code, is a reference for a piece of metal. It provides a traceable record of the batch that the piece came from. The number is used as a tracking method by metal providers and component manufacturers. A method for tracing mill heat codes to manufacturer heat codes.

What is a melt number?

The MTR document contains heat number which is also known as “melt number” and is similar to lot or batch number. When the steel plate is in its molten condition, a sample is drawn out from the batch for analysis of its chemical composition. This plate is given a particular identification number known as heat number.

Is cast number the same as heat number?

RE: Heat or cast numbers Just to add to the abov information from arunmrao, a heat number will identify a unique batch of steel that was produced in a ladle metallurgy furnace. Depending on the steel supplier, this will be ~ 10 tons to over 200 tons. A cast number then identifies where this steel was cast.

What is MTR certificate?

A Material Test Report or MTR, also known as a mill test report, acts as a certified record of a material’s physical and chemical properties. Standards, such as ANSI and ASME, that require MTR certs ensure that manufacturers are working with materials suited for their intended purpose.

What is a weld 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.

What is a lot number for steel?

Lot number is the heat treatment of steel labels. Each batch of products to do mechanical analysis, process performance inspection. Heat and lot number is proof of steel traceability.

What is a casting heat?

Heat treating a casting serves the purpose of improving or altering the physical properties of an as-cast part. Annealing is a form of heat treatment performed specifically on bronze alloys.

How heat is defined?

heat, energy that is transferred from one body to another as the result of a difference in temperature. If two bodies at different temperatures are brought together, energy is transferred—i.e., heat flows—from the hotter body to the colder.