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  • BSI
    BS 1140:1993 Specification for resistance spot welding of uncoated and coated low carbon steel
    Edition: 1993
    $411.69
    / user per year

Description of BS 1140:1993 1993

This British Standard specifies procedures for resistance spot welding in the fabrication of assemblies of uncoated and coated low carbon steel comprising two or three thicknesses of metal, where the single sheet thickness of the components to be welded is within the following ranges:

  1. uncoated sheets: 0.4 mm to 3.0 mm (see 5.1);
  2. uncoated plates: 3.0 mm to 12.0 mm (see 5.1);
  3. hot-dip zinc coated sheets: 0.4 mm to 3.0 mm (see 5.2);
  4. hot-dip iron-zinc alloy coated sheets (galvaneal): 0.4 mm to 3.0 mm (see 5.2);
  5. electrolytic zinc coated sheets: 0.4 mm to 3.0 mm (see 5.3);
  6. electrolytic zinc-nickel coated sheets: 0.4 mm to 3.0 mm (see 5.4);
  7. terne coated sheets: 0.4 mm to 3.0 mm (see 5.5);
  8. aluminium coated sheets: 0.4 mm to 3.0 mm (see 5.6);
  9. hot-dip zinc-55 % aluminium coated sheets 0.4 mm to 3.0 mm (see 5.7);
  10. hot-dip zinc-5 % aluminium coated sheets 0.4 mm to 3.0 mm (see 5.8).

Guidance on the choice of appropriate welding equipment and approximate spot welding conditions is given in annexes A and B respectively.

This procedure does not apply to the welding of sheets or plates of dissimilar thickness where the thickness ratio is greater than 3 to 1.

In addition to the definitive requirements, this standard also requires the items detailed in clause 4 to be documented. For compliance with this standard, both the definitive requirements and the documented items have to be satisfied.



Specifies procedures in the fabrication of assemblies of uncoated and coated low carbon steel comprising two or three thicknesses of metal where the single sheet thickness is within certain given limits.

Standard NumberBS 1140:1993
TitleSpecification for resistance spot welding of uncoated and coated low carbon steel
StatusConfirmed
Publication Date1993-05-15
ReplacesBS 1140:1980
DescriptorsSheet materials, Welding, Low-carbon steels, Dimensions, Test specimens, Unalloyed steels, Resistance-welding equipment, Welding electrodes, Strips, Thickness, Spot welding, Electric welding, Type testing, Metal coatings, Coated materials, Resistance welding
ICS25.160.10 Welding processes
CommitteeWEE/29
ISBN0 580 21944 5
PublisherBSI
Pages24

About BSI

BSI Group, also known as the British Standards Institution is the national standards body of the United Kingdom. BSI produces technical standards on a wide range of products and services and also supplies certification and standards-related services to businesses.
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