ASTM B 316/B 316M

This specification covers wire and rod in the alloys and the tempers suitable for manufacturing rivets and other similar items by cold-heading operations. The products covered by this specification shall be produced by extruding, rolling, or drawing, or a combination thereof, at the option of the producer. For heat-treated tempers, an inspection lot shall consist of an identifiable quantity of material of the same mill form, alloy, temper, and nominal diameter traceable to a heat-treat lot or lots, and subjected to inspection at one time. On the other hand, an inspection lot shall consist of an identifiable quantity of material of the same mill form, alloy, temper, and nominal diameter subjected to inspection for non heat-treated tempers. Samples for chemical analysis shall be taken from the material by drilling, sawing, milling, turning, or clipping a representative piece or pieces to obtain a prepared sample. One tension test per specimen shall be taken. Resistance to stress corrosion cracking for each lot of specimen shall be established by testing the previously selected tension-test samples for lot acceptance purposes. Variations from the specified diameter, length, and straightness shall not exceed the permissible variations prescribed. The material shall be supplied in the mill finish and shall conform by the requirements of this specification and shall be commercially sound.