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A kilopound per square inch (ksi) is a unit of pressure and stress used in the Imperial and US customary systems of measurement.
It represents a force of one thousand pounds-force applied to an area of one square inch.
A kilopound per square inch (ksi) is a scaled unit directly related to the more common pound per square inch (psi). The prefix "kilo-" signifies one thousand.
Here are the most common conversions:
The conversion to megapascals (MPa) is essential for converting measurements to the SI (metric) system.
In materials science and structural engineering, ksi is a primary unit for quantifying the mechanical properties and material strength of a substance.
It is commonly used to express:
For example, the strength of high-performance materials like structural steel and aluminum alloys is frequently specified in ksi.
This provides engineers with the critical data needed for safe and reliable design.
While the metric system's megapascal (MPa) is the international standard, ksi remains prevalent in American engineering, particularly in the aerospace, automotive, and construction industries.