Welding studs and welding elements

A high-quality welding stud together with the appropriate welding element forms the foundation for high-strength, durable joints in modern fastening technology. Technical requirements for welding studs depend on the applicable product standard, for example DIN EN ISO 13918, and the agreed specification. Detailed process standards and dimensions follow the welding standards, which can be found on our overview page about DIN standards in stud welding . To process these elements reliably, the appropriate power class can also be found in our overview of stud welders.

Bolzenschweißtechnik bsk + BTV GmbH supplies welding studs with high availability from stock in almost all dimensions, including threaded studs, pins and internally threaded bushes.

Bolzenschweißtechnik bsk + BTV GmbH manufactures special studs and parts to customer drawings in-house, in addition to its extensive stocked range.

Bolzenschweißtechnik bsk + BTV GmbH supplies threaded studs for welding as types PT, RD, MD or FD according to DIN EN ISO 13918, depending on the process.

Bolzenschweißtechnik bsk + BTV GmbH supplies internally threaded bushes for welding as type IT for capacitor discharge welding and type ID for drawn arc welding.

Bolzenschweißtechnik bsk + BTV GmbH supplies flat earthing terminals for welding as FL 6,3 flat terminals and DFL 6,3 double flat terminals.

Bolzenschweißtechnik bsk + BTV GmbH supplies headed studs for structural steelwork as type SD for drawn arc welding, the conventional shear connector between steel and concrete.

Bolzenschweißtechnik bsk + BTV GmbH supplies type SD headed studs according to DIN EN ISO 13918.

Bolzenschweißtechnik bsk + BTV GmbH supplies insulation pins and insulation nails, including the ISN insulation nail, VBS composite pin, IS insulation pins, disc pins and clips.

Bolzenschweißtechnik bsk + BTV GmbH supplies ground studs for welding from its range of short-cycle drawn arc welding elements.

Bolzenschweißtechnik bsk + BTV GmbH supplies T-studs for welding from its range of short-cycle drawn arc welding elements.

Bolzenschweißtechnik bsk + BTV GmbH supplies aluminium studs for stud welding from its range of short-cycle drawn arc welding elements.

Bolzenschweißtechnik bsk + BTV GmbH supplies welding studs according to DIN EN ISO 13918 across its entire range of threaded studs, bushes and pins.

Bolzenschweißtechnik bsk + BTV GmbH supplies paint groove studs for welding from its range of capacitor discharge welding elements.

Bolzenschweißtechnik bsk + BTV GmbH supplies pins and fastening elements for welding, for example UT, UD and US pins as well as IS internally threaded pins.

Bolzenschweißtechnik bsk + BTV GmbH supplies welding studs from stock in almost all dimensions. Specific terms and quantities are best clarified directly with Bolzenschweißtechnik bsk + BTV GmbH.

The codes according to DIN EN ISO 13918 identify the stud type. Drawn arc types include FD (fully threaded), MD (almost fully threaded), PD (partially threaded), RD (reduced shank), UD (pin), ID (internally threaded pin) and SD (headed stud). Short-cycle drawn arc types include PS (flanged threaded stud), US (pin) and IS (internally threaded pin). Capacitor discharge types include PT (threaded stud), UT (pin) and IT (internally threaded pin). Bolzenschweißtechnik bsk + BTV GmbH supplies these types. In our range, ND denotes an insulation nail.

Steel studs usually have strength class 4.8 according to ISO 898-1, meaning a weldable steel with specified minimum tensile strength and yield strength. Stainless steel studs are available as A2-70 or A4-70 according to ISO 3506-1. Type SD headed studs have their own material groups with specified minimum values. Bolzenschweißtechnik bsk + BTV GmbH supplies the appropriate strength class for the application.

Yes, welding studs made of austenitic stainless steel are standardised, commonly as A2 or A4 according to ISO 3506-1. They are suitable for higher corrosion resistance requirements. Bolzenschweißtechnik bsk + BTV GmbH also supplies stainless steel welding elements.

A bimetallic stud consists of two materials joined by friction welding. The welding part matches the base material for clean welding, while the remaining part is highly alloyed for improved corrosion protection. Bolzenschweißtechnik bsk + BTV GmbH advises when such a stud is appropriate.

The surface depends on the stud type, material and agreed specification. Capacitor discharge steel studs in class 4.8 are offered with copper plating. This must not be assumed for all drawn arc and short-cycle studs; PD and US are offered without copper plating. Other surface finishes are available by agreement.

The designation according to DIN EN ISO 13918 specifies type, dimensions and strength class, for example a PT threaded stud in M8 with a length of 20 mm and class 4.8. This allows each element to be ordered unambiguously. Bolzenschweißtechnik bsk + BTV GmbH helps with the correct designation.

In capacitor discharge welding, the ignition tip initiates the arc. In suitably designed drawn arc studs, a pressed-in aluminium ball supports deoxidation of the weld pool. The appropriate version depends on the welding process and material. Bolzenschweißtechnik bsk + BTV GmbH supplies suitable elements.

The upset flange increases the welding area. However, it does not replace proper welding execution or evidence of load-bearing capacity. Whether imperfections are permissible depends on the process, application and relevant inspection requirements. Joint strength must be demonstrated for the specific application. Bolzenschweißtechnik bsk + BTV GmbH supplies suitable flanged studs.

Questions about this topic or your application? Email info@stud-welding.de; the team at Bolzenschweißtechnik bsk + BTV GmbH will be happy to help.