Arc Stud Welding - General Information

Basic engineering specifications which cover all of the studs listed in this publication, regardless of size or shape, are detailed below.

Stud Dimensions (After Weld Length)

The length dimension (L) carried throughout the specifications is the overall length of the stud Before Weld. The After Weld length will be shorter dependent upon the size of the stud as shown in the following table.

Stud Diameter	Length Reduction
1/4" Dia. Through 1/2" Dia.	1/8"
5/8" Dia. Through 7/8" Dia.	3/16"
1 Dia. and Over	3'16" - 1/4"

Materials

All of the studs shown are available in mild or stainless steel. When a stud is stocked, the steel grade in which it is stocked will be indicated.

The low carbon steel or mild steel studs conform with reasonable limits to the analysis shown:

C - 0.23% Max. P - 0.040% Max.
Mn - 0.090% Max. S - 0.050% Max.

Stainless Steels: The stainless steel most commonly used is 18-8 stainless steel.

Aluminum: In aluminum, alloy 5356 is most commonly used for stud welding.

Threads

The standard threads on studs are UNC-2A. Other threads are available on request. Standard maximum thread length is 3".

Flux

All Studs 1/4" diameter and over are solid fluxed. Below 1/4" diameter solid flux or non fluxed studs are available upon request. The rectangular studs shown in this publication are not fluxed.

Annealing

Alpha studs can be annealed to a maximum of 75 Rockwell B for low carbon steel and 85 Rockwell B for Stainless Steel. An extra charge is applicable for annealing and will be quoted if desired.

Mechanical Properties

STUD TYPE	MATERIAL	TENSILE (ULTIMATE)	REDUCTION IN AREA
PD, FT, FB, RB, TP, CL, SH, NT, R6, R7, R2	C-1010/C-1020 ASTM-A-108	55,000 psi Min.	50% Min.
HA, SC	C-1010/C-1020 AWSD1.1 & ASTM-a108	60,000 psi Min.	50% Min.
DA	Low Carbon/ASTM 496	80,000 psi Min.	----
CD	C-1010/C01020 ASTM-a108	50,000 psi Min.	----

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