1 Subject Contents and Application Scope
This standard specifies model classification, technical requirements, test methods and inspection rules for stainless Steel covered electrodes.
This standard is applicable to stainless steel covered electrodes for manual arc welding. The chromium content in such electrode deposited metal shall be greater than 10.50% while the ferrum content shall exceed any other element.
2 Normative References
GB 223.1~223.70 "Methods for Chemical Analysis of Iron, Steel and Alloy"
GB 1954 "Methods of Measurement for Ferrite Content in Austenitic Cr-Ni Stainless Steel Weld Metals"
GB 2652 "Tensile Test Methods on Weld and Deposited Metal"
GB 4334. 5 “Method of Copper Sulfate-Sulfuric Acid Test for Stainless Steels”
3 Model Classification
3.1 The model of electrodes may be classified according to chemical composition of metal deposit, type of electrode coating, welding position as well as category of welding current. See Table 1 and Table 2.
3.2 Model specification
The letter "E" refers to electrodes and the number following "E" shows the classification code of chemical composition in deposited metal; in case of chemical composition with special requirements, it will be expressed by its element symbol following the number. The two numbers following the short dash "-" indicate type of electrode coating, welding position and category of welding current.
3.3 The electrode model in this standard is shown as follows:
1 Subject Contents and Application Scope
2 Normative References
3 Model Classification
4 Technical Requirements
5 Test Methods
6 Inspection Rules
7 Packing, Marking and Quality Certificate
Annex A Electrode Function and Deposited Metal Property (Informative)
Annex B Type of Electrode Coating (Informative)
Annex C Ferrite in Welded Joints (Informative)
Annex D Comparison Table of New and Old Model (Informative)
