Astm a193 grade b7 is a standard material specification for chromium-molybdenum alloy steel fasteners for use in high tensile, high temperature and special purpose applications. grade b7 is a heat-treated chromium-molybdenum alloy steel with minimum tensile requirement of 100 ksi, yield of 75 ksi and maximum hardness of 35 hrc.
Astm a193 grade b7 bolts and threaded studs are manufactured from a chromium-molybdenum steel and are quenched and tempered (heat treated) to develop the desired mechanical properties (strength). grade b7 is the most common grade of a193 bolts used in construction. b7 threaded studs and short, headed bolts are readily available in the marketplace.
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