WELDING ELECTRODE CLASSIFICATION

In order that the electrodes from different manufacturers may be identified as certain types, a code for classification of electrodes was prepared BS 1719.

The code is made up as follows:

Prefix Letter

Denotes the method of manufacture.
E - Solid Extrusion
R - Extruded with Re-inforcing
D - Dipped

If more than one method used the coding is according to the predominant method.

Type of Flux Covering: 1st Digit

This digit, the 'hundreds' digit, indicates the type of coating and therefore gives some idea of the operating characteristics.

1 High cellulose content
2 High titanium dioxide (titania) producing a fairly viscous slag
3 An appreciable amount of titanium dioxide producing a fluid slag
4 High iron or manganese silicate oxide content producing an inflated slag
5 High iron or manganese silicate oxide content producing a heavy solid slag
6 Based on calcium carbonate and fluoride
9 A covering not based on any of the above

Welding Position: 2nd Digit

This digit, the 'tens' digit, indicates the welding position for which the electrode is suitable.

0 - F, H, V, D, O
1 - F, H, V, O
2 - F, H
3 - F
4 - F, H (Fillet Weld Only)
9 - Not classified above.

When the electrode is coded as suitable for vertical and overhead positions, it should be understood that sizes larger than 6 S.W.G. (or 8 S.W.G. for iron power electrodes) are not normally used for welding in these positions.

Welding Current and Voltage Conditions: 3rd Digit

This digit, the 'units' digit, indicated the recommended operating characteristics.

Digit Welding Current And Voltage Conditions

0 - D+
1 - D + a90
2 - D - A70
3 - D + A50
4 - D ± A70
5 - D ± A90
6 - D ± A70
7 - D ± A50
9 - Not classified above

Special Characteristics: Suffixes

In the coding of an electrode with special characteristics a suffix letter, as defined below, is used.

P - Deep penetration electrodes as specified in BS 5639 'Covered Electrodes for the Metal Arc Welding of Mild Steel'

H - Hydrogen - controlled electrodes

J - Iron power electrodes with a metal recovery of 110 to 130% of the core wire weight

K - Iron powder electrodes with a metal recovery of more than 130% of the core wire weight.

welding_electrode classification

Related Terms

HYDRAULIC SEPARATION

Mechanical classification using a hydraulic classifier.

hydraulic_separation hydraulic mechanical classification mechanical_classification

HYDRAULIC CLASSIFICATION

Classification of particles in a tank by specific gravity, utilizing the action of rising water currents.

hydraulic_classification action tank classification particles water

CLASSIFICATION RATING

The designation provided in a classification by which a class rate is determined.

classification_rating a_class rate classification

CLASSIFICATION

A publication, such as Uniform Freight Classification (railroad) or the National Motor Freight classification (motor carrier), that assigns ratings to various articles and provides bill of lading descriptions and rules.

classification bill freight bill_of_lading motor

HUMPING

The process of connecting a moving rail car with a motionless rail car within a rail classification yard in order to make up a train. The cars move by gravity from an incline or 'hump' onto the appropriate track.

humping process rail gravity car yard moving classification_yard classification

GDSM

Abbreviation for 'General Department Store Merchandise.' A classification of commodities that includes goods generally shipped by massmerchandise companies. This commodity structure occurs only in service contracts.

gdsm service structure goods commodity store classification

HS

Harmonized System of Codes - an international goods classification system for describing cargo in international trade under a single commoditycoding scheme. Developed under the auspices of the Customs Cooperations Council (CCC), an international Customs organization in Brussels, this code is a hierarchically structured product nomenclature containing approximately 5,000 headings and subheadings. It is organized into 99 chapters arranged in 22 sections. Sections encompass an industry (e.g., Section XI, Textiles and Textile Articles); chapters encompass the various materials and products of the industry (e.g., Chapter 50, Silk; Chapter 55, Manmade Staple Fibers; Chapter 57, Carpets). The basic code contains fourdigit headings and sixdigit subheadings. Many countries add digits for Customs tariff and statistical purposes. In the United States, duty rates will be the eightdigit level; statistical suf xes will be at the tendigit level. The Harmonized System (HS) is the current U.S. tariff schedule (TSUSA) for imports and is the basis for the tendigit Schedule B export code.

hs organization current duty code system schedule tariff customs cargo product b goods section classification export