ISO 16834:2012 PDF

Welding consumables — Wire electrodes, wires, rods and deposits for gas shielded arc welding of high strength steels — Classification

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Title (English):

ISO 16834:2012

Welding consumables — Wire electrodes, wires, rods and deposits for gas shielded arc welding of high strength steels — Classification

Document status:: Withdrawn
Format:: Electronic (PDF)
Number of pages:: 14
Publication date:: May 2, 2012
Edition:: ISO IS 16834 edition 2 version 1
ICS:: 25.160.20

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Description (English):

ISO 16834:2012 specifies requirements for classification of wire electrodes, wires, rods and all-weld metal deposits in the as-welded condition and in the post-weld heat-treated (PWHT) condition for gas shielded metal arc welding and tungsten inert-gas welding of high-strength steels with a minimum yield strength greater than 500 MPa, or a minimum tensile strength greater than 570 MPa. One wire electrode can be tested and classified with different shielding gases. ISO 16834:2012 is a combined specification providing for classification utilizing a system based upon the yield strength and the average impact energy of 47 J of all-weld metal, or utilizing a system based upon the tensile strength and the average impact energy of 27 J of all-weld metal.

Technical details

Technical committee: ISO/TC 44/SC 3 - Welding consumables
SKU: ISO 16834:2012

Abstract

Overview

ISO 16834:2012 - Welding consumables - Wire electrodes, wires, rods and deposits for gas shielded arc welding of high strength steels - Classification - specifies classification requirements for filler metals and weld deposits used with gas shielded metal arc welding (GMAW) and tungsten inert-gas (GTAW) welding of high‑strength steels (minimum yield strength > 500 MPa or minimum tensile strength > 570 MPa). The standard provides a combined classification system that covers both the as‑welded and post‑weld heat‑treated (PWHT) conditions and allows one wire electrode to be tested with different shielding gases.

Key topics and requirements

Two classification systems
- System A: based on yield strength and average impact energy 47 J (all‑weld metal).
- System B: based on tensile strength and average impact energy 27 J (all‑weld metal).
Symbols and designation
- Product/process symbols (G = gas‑shielded metal‑arc welding, W = tungsten electrode).
- Strength/elongation, impact temperature, shielding gas and chemical composition symbols defined in Tables (1A/1B, 2, 3A/3B).
- Post‑weld heat treatment indicators (T, A, P, AP) and optional “U” for supplemental 47 J impact.
Mechanical and impact testing
- Procedures and acceptance criteria for tensile, yield, elongation and Charpy impact tests in the as‑welded and PWHT conditions (see Clause 5).
- Testing regimes differ between systems A and B (number of specimens and averaging rules described).
Shielding gas identification
- Uses ISO 14175 gas codes (examples: I1 = 100% argon; M12, M13, M20, M21; C1 = CO2; Z = unspecified).
Chemical composition and analysis
- Classification requires wire/rod chemical designation per tables; composition limits are specified for alloying control.
Delivery and retest rules
- Technical delivery conditions, rounding procedures and retest requirements are included.

Applications and users

ISO 16834:2012 is intended for:

Welding engineers and fabricators working with high‑strength steels.
Filler material manufacturers for product classification and marking.
Quality assurance, procurement and inspection teams specifying welding consumables.
Designers who need to ensure weld metal properties (yield vs tensile matching) and impact toughness for service conditions.

Practical uses include selecting a filler to match parent‑metal strength, specifying weld consumables for structural/high‑load applications, and ensuring conformity of filler materials across different shielding gases.

Related standards

ISO 14175 (Gases and gas mixtures for fusion welding)
ISO 15792‑1 (All‑weld metal test methods)
ISO 544 (Filler material delivery conditions)
ISO 13916 (Preheating and interpass measurement guidance)
ISO 14344 (Procurement of filler materials)
ISO 80000‑1 (Quantities and units)

Keywords: ISO 16834, welding consumables, wire electrodes, gas shielded arc welding, high strength steels, classification, PWHT, shielding gas, all‑weld metal, tensile strength, yield strength, impact energy.

Related standards

Standards mentioned in the description

Abstract

Overview

Key topics and requirements

Two classification systems
- System A: based on yield strength and average impact energy 47 J (all‑weld metal).
- System B: based on tensile strength and average impact energy 27 J (all‑weld metal).
Symbols and designation
- Product/process symbols (G = gas‑shielded metal‑arc welding, W = tungsten electrode).
- Strength/elongation, impact temperature, shielding gas and chemical composition symbols defined in Tables (1A/1B, 2, 3A/3B).
- Post‑weld heat treatment indicators (T, A, P, AP) and optional “U” for supplemental 47 J impact.
Mechanical and impact testing
- Procedures and acceptance criteria for tensile, yield, elongation and Charpy impact tests in the as‑welded and PWHT conditions (see Clause 5).
- Testing regimes differ between systems A and B (number of specimens and averaging rules described).
Shielding gas identification
- Uses ISO 14175 gas codes (examples: I1 = 100% argon; M12, M13, M20, M21; C1 = CO2; Z = unspecified).
Chemical composition and analysis
- Classification requires wire/rod chemical designation per tables; composition limits are specified for alloying control.
Delivery and retest rules
- Technical delivery conditions, rounding procedures and retest requirements are included.

Applications and users

ISO 16834:2012 is intended for:

Welding engineers and fabricators working with high‑strength steels.
Filler material manufacturers for product classification and marking.
Quality assurance, procurement and inspection teams specifying welding consumables.
Designers who need to ensure weld metal properties (yield vs tensile matching) and impact toughness for service conditions.

Related standards

ISO 14175 (Gases and gas mixtures for fusion welding)
ISO 15792‑1 (All‑weld metal test methods)
ISO 544 (Filler material delivery conditions)
ISO 13916 (Preheating and interpass measurement guidance)
ISO 14344 (Procurement of filler materials)
ISO 80000‑1 (Quantities and units)

ISO 16834:2012 PDF

Technical details

Abstract

Overview

Key topics and requirements

Applications and users

Related standards

Related standards

Abstract

Overview

Key topics and requirements

Applications and users

Related standards

Related standards

Welding consumables - Gases and gas mixtures for fusion welding and allied processes (ISO 14175:2008)

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