Grading Terms

Reference data and engineering information about grading terms for standard organizations applications.

Overview

Engineering reference data for Grading Terms in standard organizations.

$ISO \; 9001:2015$

Quality management systems.

$ASTM \; E8$

Standard test methods for tension testing.

$ANSI/ASME \; B16.5$

Pipe flanges and flanged fittings.

Symbol	Description	Unit
$ISO$	International Organization for Standardization	—
$ASTM$	American Society for Testing and Materials	—
$ANSI$	American National Standards Institute	—

The following conversion factors relate Imperial and SI units for pressure and force:

Pressure: $1 \, \text{psi} \, (\text{lbf/in}^2) = 6,894.8 \, \text{Pa} \, (\text{N/m}^2)$
Force: $1 \, \text{lbf} \, (\text{Pound force}) = 4.45 \, \text{N} = 0.454 \, \text{kp}$