Convert ton (assay) (US) [AT (US)] to grain [gr] Online | Free weight-and-mass Converter
Ton (Assay) (US) [AT (US)]
The assay ton (AT) is a specialized unit of weight used in the mining and precious metals industries in the United States. It is primarily used to measure ore quantities for assaying, which is the process of analyzing the metal content of ore samples.
One assay ton equals 29.1667 pounds (about 13.23 kilograms), which is different from the standard short ton (2,000 pounds). This smaller ton unit allows for more precise measurements in evaluating the value of ore deposits.
The assay ton helps miners and metallurgists accurately calculate the concentration of valuable metals like gold and silver in ores.
Grain [gr]
The grain (gr) is one of the oldest units of mass, traditionally used in various weight systems including troy, apothecary, and avoirdupois.
One grain is defined as exactly 64.79891 milligrams (0.0648 grams). It was originally based on the weight of a single grain of barley or wheat.
Grains are still commonly used today to measure small quantities such as the weight of bullets, arrows, and some pharmaceuticals.
Summary:
1 grain = 64.79891 milligrams (0.0648 grams)
Used in troy, apothecary, and avoirdupois systems
Common in ammunition and medicine measurements