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In the metric system, the mass per unit area of all types of textiles is expressed in grams per square metre (g/m 2). The gram (alternative spelling: gramme; SI unit symbol: g) is a metric system unit of mass. A gram is defined as one thousandth of the SI base unit, the kilogram, or 1 × 10−3 kg.
threads per inch (TPI) Threads per inch is the measurement of the number of threads per inch of material, such as fabric, or metal in the case of screws and bolts. thread count The thread count is the number of warp threads per inch plus the number of weft threads. tissue Tissue is a fine woven fabric or gauze. trim
Retrieved December 20, 2016. a commercial unit of length or area used to measure finished cloth. Generally speaking, one bolt represents a strip of cloth 100 yards (91.44 meters) long, but the width varies according to the fabric. Cotton bolts are traditionally 42 inches (1.067 meters) wide and wool bolts are usually 60 inches (1.524 meters) wide.
The number of twists per inch can, in plied yarns, be determined by counting the number of bumps in one inch, and dividing that number by the number of singles (the strands plied together to make the yarn). [2] If the adjacent picture, for example, was of an inch of two ply yarn, then the number of twists per inch would be 6 divided by 2, or ...
A full (100%) UTS or ISO thread has a height of around 0.65p. Threads can be (and often are) truncated a bit more, yielding thread depths of 60% to 75% of the 0.65p value. For example, a 75% thread sacrifices only a small amount of strength in exchange for a significant reduction in the force required to cut the thread.
Should 'per square inch' or 'per square centimetre' actually read 'per 1-inch square' or 'per 1-centimetre square'? A square inch can have different shapes, and this would vary the thread count. I have also seen fabric (sheets) labeled '250 thread count per 10cm^2' which if it means a 10 square centimetre square is a bit bigger than a 1-inch ...
The quality of bed sheets is often conveyed by the thread count—the number of threads per square inch of material. In general, the higher the thread count, the softer the sheet, but the weave and type of thread may affect the "hand" of the material so that a sheet with a lower thread count may actually be softer than one with a higher count.
The kilopound per square inch (ksi) is a scaled unit derived from psi, equivalent to a thousand psi (1000 lbf/in 2). ksi are not widely used for gas pressures. They are mostly used in materials science, where the tensile strength of a material is measured as a large number of psi. [4] The conversion in SI units is 1 ksi = 6.895 MPa, or 1 MPa ...