Convert ton (assay) (US) to petagram
Please provide values below to convert ton (assay) (US) [AT (US)] to petagram [Pg], or Convert petagram to ton (assay) (US).
How to Convert Ton (Assay) (Us) to Petagram
1 AT (US) = 2.91666666666667e-14 Pg
Example: convert 15 AT (US) to Pg:
15 AT (US) = 15 × 2.91666666666667e-14 Pg = 4.375e-13 Pg
Ton (Assay) (Us) to Petagram Conversion Table
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Ton (Assay) (Us)
The ton (assay) (US), symbolized as AT (US), is a unit of weight used primarily in the assay and precious metals industry, equivalent to 31.1034768 grams.
History/Origin
The assay ton originated in the United States as a standardized measure for precious metal content in assays, aligning with the metric system but retaining the traditional 'ton' terminology for industry consistency.
Current Use
Today, the assay ton (AT US) is used mainly in the precious metals industry for assay purposes, especially in the context of gold and silver purity measurements, and is part of weight and mass conversions within the 'Common Converters' category.
Petagram
A petagram (Pg) is a unit of mass equal to 10^15 grams or one quadrillion grams.
History/Origin
The petagram was introduced as part of the metric system's prefixes to represent extremely large masses, following the adoption of the International System of Units (SI). It is derived from the prefix 'peta-' which denotes 10^15.
Current Use
The petagram is primarily used in scientific contexts to quantify very large masses, such as in astronomy and geology, but is rarely used in everyday measurements.