ISO 3581:2023
Welding consumables — Covered electrodes for manual metal arc welding of stainless and heat-resisting steels — Classification
This document specifies requirements for classification of covered electrodes, based on the all-weld metal chemical composition, the type of electrode covering and other electrode properties, and the all-weld metal mechanical properties, in the as-welded or heat-treated conditions, for manual metal arc welding of stainless and heat-resisting steels.
This document is a combined standard providing for classification utilizing a system based upon classification according to nominal composition or utilizing a system based upon classification according to alloy type.
a) Paragraphs and tables which carry the label “classification according to nominal composition-A” or “ISO 3581-A” are applicable only to products classified to that system.
b) Paragraphs and tables which carry the label “classification according to alloy type-B” or “ISO 3581-B” are applicable only to products classified to that system.
c) Paragraphs and tables which carry neither label are applicable to products classified according to either or both systems.
Annex B gives information on considerations on weld metal ferrite content.
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Classification
4.1 General
4.2 Classification systems
4.2.1 General
4.2.2 Classification: nominal composition — A
4.2.3 Classification: alloy type — B
5 Symbols and requirements
5.1 Symbol for the product or process
5.1.1 Classification according to nominal composition — A
5.1.2 Classification according to alloy type — B
5.1.3 Symbol for the chemical composition of all-weld metal
5.2 Symbol for type of electrode covering
5.2.1 General
5.2.2 Classification according to nominal composition — A
5.2.3 Classification according to alloy type — B
5.3 Symbol for nominal electrode efficiency and type of current
5.3.1 Classification according to nominal composition — A
5.3.2 Classification according to alloy type — B
5.4 Symbol for welding position
6 Chemical analysis
7 Mechanical property tests
7.1 General
7.2 Preheat and interpass temperatures
7.3 Pass sequence
8 Fillet weld test
9 Rounding procedure
10 Retests
11 Technical delivery conditions
12 Examples of designation
12.1 General
12.2 Example 1: classification according to nominal composition — A
12.3 Example 2: classification according to alloy type — B
12.4 Example 3: Z classification
Annex A (informative) Types of covering
Annex B (informative) Considerations on weld metal ferrite contents
Bibliography
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Classification
4.1 General
4.2 Classification systems
4.2.1 General
4.2.2 Classification: nominal composition — A
4.2.3 Classification: alloy type — B
5 Symbols and requirements
5.1 Symbol for the product or process
5.1.1 Classification according to nominal composition — A
5.1.2 Classification according to alloy type — B
5.1.3 Symbol for the chemical composition of all-weld metal
5.2 Symbol for type of electrode covering
5.2.1 General
5.2.2 Classification according to nominal composition — A
5.2.3 Classification according to alloy type — B
5.3 Symbol for nominal electrode efficiency and type of current
5.3.1 Classification according to nominal composition — A
5.3.2 Classification according to alloy type — B
5.4 Symbol for welding position
6 Chemical analysis
7 Mechanical property tests
7.1 General
7.2 Preheat and interpass temperatures
7.3 Pass sequence
8 Fillet weld test
9 Rounding procedure
10 Retests
11 Technical delivery conditions
12 Examples of designation
12.1 General
12.2 Example 1: classification according to nominal composition — A
12.3 Example 2: classification according to alloy type — B
12.4 Example 3: Z classification
Annex A (informative) Types of covering
Annex B (informative) Considerations on weld metal ferrite contents
Bibliography