The heat treat oven is officially up & running at Ermak! This was a major move and we are excited to further serve our customers with this new capability. Though many aluminum castings are used in the “as cast” condition, some applications will require metal properties that are not present in the cast material, such as enhanced strength. In these cases, we turn to the aluminum heat treatment process.
Our certified furnaces and controls provide uniform heat transfer to all areas of the castings. Our large high-temperature ovens provide excellent tempering results that are consistent and reliable.
We heat treat hundreds of castings daily and customize the process to meet our customers exact requirements. This in-house, value-added service provides a more streamlined process to meet customer’s timeframe and budget.
For reference, here is a list of the cast alloys we typically pour with details of what “T6” tempering does to 356 and A356 alloys:
Tensile – The amount of force required to break the material, typically measured in pounds per square inch (PSI).
Yield – The point at which material (under applied pressure) will change its form and not return to its original condition, typically measured in pounds per square inch (PSI).
Elongation – A mechanical property of metal that is the degree to which a material may be bent, stretched, or compressed before it ruptures. It is a point between tensile strength and yield strength and is expressed as a percentage of the original length.
Brinell – A common hardness test done with a round, very hard steel ball which is pressed into the material being tested. The diameter of the mark left in the steel is measured and a table is used to convert this to a Brinell Hardness Number. The higher the number, the harder the steel. Resistance to indentation, scratching, abrasion, or cutting. Materials with little resistance are called soft; those with high resistance are called hard.