Technical data

Technical specifications for SOYER CD weld studs as per DIN EN ISO 13918 – 1998

Dimensions

SOYER welding studs and pins correspond to DIN EN ISO 13918 - 1998 and are suitable for manual and fully automatic feed. General tolerances as per DIN ISO 2768-m. Welding studs with modified tolerances can be supplied on request, the same applies to intermediate and extra lengths.

Materials and strength properties

SOYER welding studs are supplied in the following standard materials:
- Steel 4.8 per DIN EN ISO 898 Part 1, suitable for welding
- Stainless steel A2-50 (type according to our selection)
- Brass Cu Zn 37 (Ms 63) as per ISO 426-1, ISO 1638
- Aluminium AIMg 3, F 23 as per EN 1301-2
Other materials or strength properties on request and by agreement.
Upon request, a factory certificate in compliance with DIN EN 10204 can be supplied with each consignment.

Type of studs

SOYER welding studs are supplied as the medium (m) type specified by DIN ISO 2768. They are cold-formed in the manufacturing process. CD welding studs made of steel have a galvanic copper coating of 4.8 µm as a protection against corrosion as per DIN ISO 4042.

Technical conditions of delivery

SOYER welding studs are supplied at quality limit (AQL) 1.5 as per DIN ISO 3269. The studs are delivered in a degreased state and free of impurities.
The quantity tolerance can amount to up to + 5 % of the order quantity.

Commercial delivery terms

SOYER welding studs are supplied ex works, exclusive of packaging and in compliance with the attached sales and delivery terms. These terms have been adapted to the valid laws concerning German Business Terms (AGBG) as well as the especially strict conditions in
§ 10, 11 AGBG for deliveries to trade- and non-trade customers (e.g. craftsmen).

Order instructions

To simplify order processing, please state stud types, stud diameter, stud length, stud internal thread size and material. The smallest packaging quantity for studs, pins, tapped studs and earth tags is 500, and for welding pins 1000.

Ignition tip

SOYER welding studs have a cold-formed, calibrated ignition tip with an exacting tolerance in length and diameter. It is used to initiate the electric arc and control the welding time. Optimum welding results depend mainly on the precision of the ignition tip.

Stud flange

SOYER welding studs are principally equipped with a cold-formed flange. It prevents the electric arc from sparking to the cylindrical stud shaft and increases the welding area. This guarantees a high quality of stud welded joints. Flanges of other dimensions can only be supplied on request and by arrangement. The use of studs without flange can only be recommended – according to individual requirements – in a limited number of cases.

Threads

SOYER welding studs have a cold-rolled thread as per DIN ISO 724, tolerance 6g. Other threads and tolerances on request and by agreement. The grain flow is not interrupted and the surface strength is increased by 1.5 to 2 times. The thread is therefore less subject to wear and, because of reduced surface roughness, more resistant to corrosion. If the studs are surface-coated (e.g. copper-plated), the thread tolerance is 6h. During the welding process, slight variations in tolerance may be caused by the power transmission to the thread crests.

Quality assurance

SOYER welding studs should be stored in the original packaging until they are used to protect them against undesirable contamination, humidity, oxidation etc. The use of SOYER welding studs ensures optimum welded joints of unvarying quality!

Product quality

Please observe that we only deliver goods of consistently high quality. We guarantee perfect welding quality. Faulty welds and all the associated repair and follow-up costs are thus ruled out from the beginning.

Tests

The test method to "Ensure the quality of stud welded joints" with capacitor discharge welding is described in detail in DIN EN ISO 14555.

Date of issue: January 2009 – All specifications are subject to change without prior notice