ASTM A193 B7 Threaded Rod
Alloy Steel Quenched & Tempered Threaded Rod (AISI 4140/4142)
ASTM A193-B7 threaded rod Grade B7, is the specification for a heat-treated chrome-moly steel used for medium high temperature service. Rods that meet this specification are either made from AISI 4140 or 4142.
Diameter range from 1/4″ up through 4″, and 10mm to 100mm they must meet minimum yield strength of 105 KSI, and minimum tensile strength of 125 KSI.