BS EN ISO 13918:2018+A1:2021

This standard BS EN ISO 13918:2018+A1:2021 Welding. Studs and ceramic ferrules for arc stud welding is classified in these ICS categories:

• 25.160.10 Welding processes
• 21.060.10 Bolts, screws, studs

This document specifies the following:

• requirements for studs and ceramic ferrules for arc stud welding;

• dimensions, materials and mechanical properties.

Table 1 shows types of studs and the symbols for studs and ceramic ferrules that are covered by this document.

Table 1

Types of studs and symbols for studs and ceramic ferrules

Welding technique	Type of studa	Symbol for studs	Symbol for ceramic ferrules
Drawn arc stud welding with ceramic ferrule or shielding gas	Fully-threaded stud	FD	UF
	Virtually fully-threaded studb	MD	MF
	Partially threaded stud	PD	PF
	Threaded stud with reduced shaft	RD	RF
	Unthreaded stud	UD	UF
	Insulation pin/nail	ND	UF
	Stud with internal thread	ID	UF
	Shear connector	SD	UF/DF
Short-cycle drawn arc stud welding	Threaded stud with flange	PS	—
	Unthreaded stud	US	—
	Stud with internal thread	IS	—
Stud welding with tip ignition	Threaded stud	PT	—
	Unthreaded stud	UT	—
	Stud with internal thread	IT	—

^a Further types of stud and ceramic ferrules can be specified as required for special applications.

^b Also called MPF, stud with a nearly full thread and a minimum length of the unthreaded part.