80 Standards · Expert Answers

Welding Questions

Every answer cites specific tables and clauses from the current edition. 80 standards covered — D1.1, D1.5, D1.4, ASME IX, API 1104, CSA W59, and more. No hedging, no outdated editions.

Most Soudage Q&A on the web cites outdated editions. Tableau values change between editions — Préchauffage categories get reorganized, Soudure d'Angle footnotes revised, Critères d'acceptation updated. Every answer here references the current edition of each Norme, verified against the source.

Each question links to the relevant Clause5 Calculateur or reference page so you can look up your specific steel, process, and Épaisseur after reading the explanation.

What Température de Préchauffage Does A36 Need?

The answer depends on your Procédé de Soudage and material thickness. Table 5.11 gives different values for Non Bas Hydrogène SMAW vs GMAW/FCAW/SAW.

Table 5.11Clause 5.7

E7018 vs E6013: When to Use Each Electrode

One is Bas Hydrogène, one is rutile. The difference changes your D1.1 preheat Catégorie, your Acceptation criteria, and whether the joint is Code-qualified.

Table 5.3Table 5.11A5.1

What Is Soudure Porosité and When Does D1.1 Reject It?

Every weld has some porosity. D1.1 Article 8 defines exactly how much is acceptable — with different Limites for Examen Visuel vs Contrôle par radiographie.

Clause 8Table 8.1

D1.1 Minimum Dimension de Soudure d'Angle: Table 7.7 Explained

Table 7.7 sets the minimum Côté du cordon d'angle Taille based on the thicker part joined. The footnotes cover low-hydrogen distinctions most references skip.

Table 7.7Footnotes a/b/c