Jis Z 3140 Pdf !!top!!

JIS Z 3140: 2017, First English edition published in 2017-09

JIS Z 3140 applies to resistance spot welds of various materials, including:

: Classifies welds based on their required mechanical properties and surface finish (e.g., Grade A, B, or C). jis z 3140 pdf

The document is structured to guide quality assurance teams through the entire inspection process:

The document clearly defines which materials the test applies to. It usually excludes very large components or those with special coatings (e.g., gold over nickel, which requires specific handling). It also references other JIS standards for solder composition, flux types, and aging procedures. JIS Z 3140: 2017, First English edition published

While you may be tempted to find a free version, investing in the official PDF from the Japanese Standards Association is the only way to guarantee you have the latest, accurate, and complete test methods. Pair that official document with the right equipment (wetting balance tester or precision dip system), and you will have a world-class solderability testing program.

Typically limited to 10% of the sheet thickness (or 0.15 mm) for specified grades. It also references other JIS standards for solder

: Applicable to materials with a sheet thickness between 0.4 mm and 5.0 mm .

JIS Z 3140 provides a to evaluate:

The engineer observes 98% solder coverage on the lead, with no exposed base metal. Pass. The assembly proceeds.