A surgical stapling anvil for use with a surgical instrument is disclosed. The anvil comprises an anvil body comprising a tissue-facing surface and a longitudinal cavity. The longitudinal cavity comprises a first cavity portion configured to receive at least a portion of a cutting edge of a firing member of the surgical instrument therethrough, a second cavity portion configured to receive an anvil-engaging portion of the firing member therethrough, and a third cavity portion comprising a first angular surface which flares outward relative to the second cavity portion. The anvil further comprises an anvil cap comprising a first section positioned within a portion of the second cavity portion and a second section positioned within the third cavity portion, wherein the second section comprises a second angular surface corresponding to the first angular surface, and wherein the first angular surface and the second angular surface are welded together.