ISO 17641-2:2015 PDF

Destructive tests on welds in metallic materials — Hot cracking tests for weldments — Arc welding processes — Part 2: Self-restraint tests

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Title (English):

ISO 17641-2:2015

Destructive tests on welds in metallic materials — Hot cracking tests for weldments — Arc welding processes — Part 2: Self-restraint tests

Document status:: Active
Format:: Electronic (PDF)
Number of pages:: 13
Publication date:: October 22, 2015
Edition:: ISO IS 17641 edition 2 version 1
ICS:: 25.160.40

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Description (English):

ISO 17641-2:2015 specifies the required specimens, the test piece dimensions, and the procedures to be followed to carry out self-restraint hot cracking tests. The following tests are described: - T-joint weld cracking test; - weld metal tensile test; - longitudinal bend test. The tests are designed to provide information about the hot cracking sensitivity of weld metals. The tests are not suitable for the assessment of parent materials. ISO 17641-2:2015 applies primarily to fully austenitic stainless steels, nickel, nickel base, and nickel copper weld metals. This part of ISO 17641 can also be used for other weld metals. ISO 17641-2:2015 describes only how to carry out the tests and report the results. It does not give any acceptance criteria.

Technical details

Technical committee: ISO/TC 44/SC 5 - Testing and inspection of welds
SKU: ISO 17641-2:2015

Abstract

Overview

ISO 17641-2:2015 - Destructive tests on welds in metallic materials - Hot cracking tests for weldments - Arc welding processes - Part 2: Self‑restraint tests defines specimen types, test-piece dimensions, test procedures and reporting for self‑restraint hot‑cracking tests on weld metals. It describes three self‑restraint methods - the T‑joint weld cracking test, the weld metal tensile test, and the longitudinal bend test - to assess the hot‑cracking sensitivity of weld metal produced by arc welding. The standard describes how to carry out and report the tests but does not provide acceptance criteria.

Key technical topics and requirements

Scope and materials: Primarily intended for fully austenitic stainless steels, nickel, nickel‑base and nickel‑copper weld metals, but applicable to other weld metals.
Test types:
- T‑joint weld cracking test (qualitative): single‑pass restrained fillet weld; three specimen types (A, B, C) with different restraint levels. Type B uses a 40 mm thick horizontal plate; Type C uses 10 mm stiffeners if a 40 mm plate is not available.
- Weld metal tensile test: cylindrical all‑weld‑metal specimens from butt welds; opens cracks formed during welding and can be assessed qualitatively or quantitatively using the microcrack sensitivity index (MSI).
- Longitudinal bend test: widens weld‑formed cracks for detection; may be reported qualitatively or using MSI.
Procedure highlights:
- Welding according to a written WPS (reference: ISO 15614‑1).
- First fillet run (a1) made as continuous run in PB position with a throat ≥ 5 mm; second run (a2) started within 20 s.
- Examination: visual inspection (up to ×5 magnification); liquid dye penetrant may be used to aid crack detection.
Principle: Cracks are generated during welding; tensile and bend methods apply additional strain to widen existing cracks for measurement and reporting.

Practical applications - who uses this standard

Welding engineers and procedure qualification labs validating welding consumables and procedures for hot‑cracking susceptibility.
Welding consumable manufacturers conducting qualification tests.
Quality assurance/inspection teams, metallurgists and R&D groups assessing weld metal behavior under restraint.
Fabricators using production weld coupon tests to monitor susceptibility in manufacturing. Note: ISO 17641‑2 is for evaluating weld metal sensitivity, not parent‑metal assessment; acceptance limits must be set by the user, purchaser or project specification.

Related standards

ISO 17641‑1 (General)
ISO 17641‑3 (Externally loaded tests - Technical Report)
ISO 15614‑1 (Welding procedure tests)
ISO 5173, ISO 5178, ISO 6892‑1, ISO 15792‑1 (referenced test and tensile standards)

Keywords: ISO 17641-2:2015, hot cracking tests, weldments, self‑restraint tests, arc welding, T‑joint weld cracking test, weld metal tensile test, longitudinal bend test, microcrack sensitivity index, welding procedure qualification.

Related standards

Standards mentioned in the description

Abstract

Overview

Key technical topics and requirements

Scope and materials: Primarily intended for fully austenitic stainless steels, nickel, nickel‑base and nickel‑copper weld metals, but applicable to other weld metals.
Test types:
- T‑joint weld cracking test (qualitative): single‑pass restrained fillet weld; three specimen types (A, B, C) with different restraint levels. Type B uses a 40 mm thick horizontal plate; Type C uses 10 mm stiffeners if a 40 mm plate is not available.
- Weld metal tensile test: cylindrical all‑weld‑metal specimens from butt welds; opens cracks formed during welding and can be assessed qualitatively or quantitatively using the microcrack sensitivity index (MSI).
- Longitudinal bend test: widens weld‑formed cracks for detection; may be reported qualitatively or using MSI.
Procedure highlights:
- Welding according to a written WPS (reference: ISO 15614‑1).
- First fillet run (a1) made as continuous run in PB position with a throat ≥ 5 mm; second run (a2) started within 20 s.
- Examination: visual inspection (up to ×5 magnification); liquid dye penetrant may be used to aid crack detection.
Principle: Cracks are generated during welding; tensile and bend methods apply additional strain to widen existing cracks for measurement and reporting.

Practical applications - who uses this standard

Welding engineers and procedure qualification labs validating welding consumables and procedures for hot‑cracking susceptibility.
Welding consumable manufacturers conducting qualification tests.
Quality assurance/inspection teams, metallurgists and R&D groups assessing weld metal behavior under restraint.
Fabricators using production weld coupon tests to monitor susceptibility in manufacturing. Note: ISO 17641‑2 is for evaluating weld metal sensitivity, not parent‑metal assessment; acceptance limits must be set by the user, purchaser or project specification.

Related standards

ISO 17641‑1 (General)
ISO 17641‑3 (Externally loaded tests - Technical Report)
ISO 15614‑1 (Welding procedure tests)
ISO 5173, ISO 5178, ISO 6892‑1, ISO 15792‑1 (referenced test and tensile standards)

ISO 17641-2:2015 PDF

Technical details

Abstract

Overview

Key technical topics and requirements

Practical applications - who uses this standard

Related standards

Related standards

Abstract

Overview

Key technical topics and requirements

Practical applications - who uses this standard

Related standards

Related standards

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