GB/T 5293-2018 Solid wire electrodes,tubular cored electrodes and electrode/flux combinations for submerged arc welding of non alloy and fine grain steels
This standard specifies the classification, technical requirements, test methods, re-inspection and technical conditions of supply of solid wire electrodes, tubular cored electrodes electrodes and electrode/flux combinations for submerged arc welding of non-alloy and fine grain steels.
This standard is applicable to the classification of solid wire electrodes, and electrode/flux combinations for submerged arc welding of non-alloy and fine grain steels with a minimum tensile strength of up to 570 MPa.
2 Normative References
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 2650 Impact Test Methods on Welded Joints (GB/T 2650-2008, ISO 9016:2001, IDT)
GB/T 2651 Tensile Test Methods on Welded Joints (GB/T 2651-2008, ISO 4136:2001, IDT)
GB/T 2652 Tensile Test Methods on Weld and Deposited Metal (GB/T 2652-2008, ISO 5178:2001, IDT)
GB/T 3323 Radiographic Examination of Fusion Welded Joints in Metallic Materials
GB/T 3965 Determination of Diffusible Hydrogen in Deposited Metal (GB/T 3965-2012, ISO 3690:2000, MOD)
GB/T 18591 Welding — Guidance on the Measurement of Preheating Temperature, Interpass Temperature and Preheat Maintenance Temperature (GB/T 18591-2001, idt ISO 13916:1996)
GB/T 25774.1 Test Methods for Welding Consumables — Part 1: Preparation and Testing of Deposited Metal Specimens for Mechanical Properties in Steel Nickel and Nickel Alloys (GB/T 25774.1-2010, ISO 15792-1:2000, MOD)
GB/T 25774.2 Test Methods for Welding Consumables — Part 2: Preparation of Single-run and Two-run Technique Test Specimens in Steel (GB/T 25774.2-2016, ISO 15792-2:2000, MOD)
GB/T 25775 Technical Delivery Conditions for Welding consumables — Type of product, Dimensions, Tolerances and Markings (GB/T 25775-2010, ISO 544:2003, MOD)
GB/T 25777 Preparation Methods of Deposited Metal Specimens for Chemical Analysis (GB/T 25777-2010, ISO 6847:2000, IDT)
GB/T 25778 Procurement Guidelines for Welding Consumables (GB/T 25778-2010, ISO 14344:2010, MOD)
3 Classification
3.1 Classification of solid wire electrode
The solid wire electrode shall be classified in accordance with its chemical composition. The letter "SU" indicates the submerged arc welding solid wire electrode, and the combination of numbers or numbers and letters after "SU" indicates the classification of chemical composition. See Annex A for a comparison of symbols/designations between different standards for solid wire electrode.
The examples of symbols of solid wire electrodes in this standard are as follows:
