ISO 28319:2018
Dentistry — Laser welding and filler materials
ISO 28319:2018 specifies requirements and test methods for laser welding and the filler materials thereto used in the dental laboratory for welding of metallic restorations and appliances.
For filler materials used in laser welding, this document also specifies the information given in the instructions for use, marking and labelling.
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Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Requirements
4.1 Chemical composition
4.1.1 Metallic materials to be joined
4.1.2 Filler material
4.1.3 Hazardous elements in filler material
4.2 Biocompatibility
4.3 Mechanical strength of laser welded joint (tensile strength)
4.4 Corrosion resistance
4.4.1 Static immersion test
4.4.2 Appearance after corrosion exposure
4.5 Laser welding process
5 Sampling
6 Preparation of specimens
6.1 General
6.2 Specimens for tensile testing
6.2.1 General
6.2.2 Procedure
6.3 Specimens for corrosion testing
6.3.1 General
6.3.2 Seam geometry
7 Measurement and test methods
7.1 Visual inspection
7.2 Chemical composition
7.3 Tensile testing
7.3.1 General
7.3.2 Evaluation of tensile testing results
7.3.3 Calculation of tensile strength
7.4 Corrosion resistance by static immersion test
7.4.1 Reagents
7.4.2 Apparatus
7.4.3 Test solution
7.4.4 Test procedure
7.4.5 Analysis
7.4.6 Microscopic inspection
7.4.7 Report
8 Instruction for use
9 Marking and labelling
9.1 Marking
9.2 Labelling
10 Test report
Annex A (informative) Laser welding process
Bibliography
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Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Requirements
4.1 Chemical composition
4.1.1 Metallic materials to be joined
4.1.2 Filler material
4.1.3 Hazardous elements in filler material
4.2 Biocompatibility
4.3 Mechanical strength of laser welded joint (tensile strength)
4.4 Corrosion resistance
4.4.1 Static immersion test
4.4.2 Appearance after corrosion exposure
4.5 Laser welding process
5 Sampling
6 Preparation of specimens
6.1 General
6.2 Specimens for tensile testing
6.2.1 General
6.2.2 Procedure
6.3 Specimens for corrosion testing
6.3.1 General
6.3.2 Seam geometry
7 Measurement and test methods
7.1 Visual inspection
7.2 Chemical composition
7.3 Tensile testing
7.3.1 General
7.3.2 Evaluation of tensile testing results
7.3.3 Calculation of tensile strength
7.4 Corrosion resistance by static immersion test
7.4.1 Reagents
7.4.2 Apparatus
7.4.3 Test solution
7.4.4 Test procedure
7.4.5 Analysis
7.4.6 Microscopic inspection
7.4.7 Report
8 Instruction for use
9 Marking and labelling
9.1 Marking
9.2 Labelling
10 Test report
Annex A (informative) Laser welding process
Bibliography