An imperial pressure unit where 1 ksi equals 1,000 psi (≈6.895 MPa). Primarily used in the United States for material strength testing (e.g., steel yield strength often expressed in ksi), aerospace, and mechanical engineering. Not used in China but frequently encountered in imported equipment or American-standard drawings.

An imperial pressure unit where 1 ksi equals 1,000 psi (≈6.895 MPa). Primarily used in the United States for material strength testing (e.g., steel yield strength often expressed in ksi), aerospace, and mechanical engineering. Not used in China but frequently encountered in imported equipment or American-standard drawings.