En Iso 15614-7 Pdf May 2026

The Complete Guide to EN ISO 15614-7: Welding Procedure Qualification for Cladding, Surfacing, and Overlays (PDF Resources Explained)

Introduction: Why This Standard Matters

In the world of industrial welding, integrity is everything. Whether you are creating a corrosion-resistant layer inside a chemical reactor or building up a worn shaft, the quality of the weld overlay determines the lifespan of the component. This is where EN ISO 15614-7 becomes indispensable.

  1. Prepare a test plate: 300 x 150 x 20 mm (carbon steel, Grade P265GH).
  2. Deposit two layers: First layer (buttering) at low heat input to limit dilution; second layer (corrosion-resistant).
  3. NDT: PT reveals no cracks. UT shows consistent bond.
  4. Macro: Cut two cross-sections. Measure dilution in first layer (must be <20% per your WPS).
  5. Chemical analysis: Drill samples from second layer's surface. Result: 20% Cr, 10% Ni – meets 309L spec.
  6. Result: WPQR valid for 309L overlay on all Group 1 steels up to 50 mm thickness, using SAW with similar heat input.

By adhering to EN ISO 15614-7, manufacturers ensure that the cladding will not spall (flake off) and will provide the chemical resistance required for the asset's design life. en iso 15614-7 pdf