Free Welding Calculators & Reference

Welding Calculators & Reference

Free welding calculators and reference tools for AWS D1.1:2025 and A2.4. Precalentamiento, Aporte Térmico, fillet Tamaño, Equivalente de Carbono — plus symbol charts, Cumplimiento guides, and Q&A for fabricators and inspectors.

Calculators

Preheat Calculator

D1.1:2025 Tabla 5.11 lookup. Select steel, process, and Espesor — get Mínimo preheat and Temperatura entre Pasadas.

Heat Input Calculator

Calculate heat input in kJ/in and kJ/mm from Voltaje, Amperaje, and Velocidad de Avance.

Fillet Soldadura Size

D1.1 Table 7.7 minimum Tamaño de Soldadura de Filete lookup by material thickness.

Deposition Rate

Calculate Metal de Soldadura Tasa de Deposición in lbs/hr and kg/hr from Velocidad de alimentación del alambre and Diámetro del electrodo.

Carbon Equivalent

Calculate CE(IIW) and Pcm from steel chemistry to assess Soldabilidad and Templabilidad.

D1.1 Reference

What goes into a WPS under D1.1. Precalificado vs qualified, Table 5.5 essential variables, format Requisitos.

How to Fill Out a WPS Form

Field-by-field walkthrough of the D1.1 Annex J form. Table 5.5 variables, tolerances, common mistakes.

Prequalified WPS

Clause 5 requirements for prequalification: approved processes, Table 5.6 steels, Figure 5.1 joints.

Code Minimum vs WPS

Hierarchy when a customer says D1.1 prohibits what your WPS allows. §1.5 Engineer authority, §1.7 shall/should/may, §5.2 WPS variables.

EOR Weld Especificación Drawings

What belongs in Documentos contractuales vs Contratista WPS details under D1.1 Clauses 1.5 and 5.2.

Weld Group Torsion

Double Soldadura de Filete group torsion: force-couple spacing, eccentricity, and D1.1 Cláusula 4.7 boundaries.

D1.1 Fatigue Categories

Table 4.5 fatigue stress categories, threshold ranges, and the difference from preheat categories.

ER80 vs ER90 (Gas de protección)

When a shielding gas change silently breaks an ER90 assumption. A5.28 §3.2 exception + D1.1:2025 Clause 5.6.4 prequalified gas rules.

GMAW Shielding Gas

D1.1:2025 Clause 5.6.4 gas substitution paths, Table 5.10 ranges, OE formula, and flow-rate tolerance.

Welding Across I-Beam Flanges

D1.1 Table 4.5 fatigue categories for transverse welds across beam flanges, plus D1.5 FCM context.

PQR — Procedure Qualification

When a PQR is required under D1.1. Table 6.6 essential variables and the prequalified exception.

AWS D1.1:2025 Overview

What D1.1 covers, 11-clause overview, prequalified vs qualified WPS paths.

Complete joint penetration welds: prequalified joints per Figure 5.1, Respaldo requirements, CJP vs PJP.

Mill Test Report (MTR)

How to read an MTR for D1.1 compliance: ASTM spec to Table 5.6 group to preheat lookup.

Interpass Temperature

D1.1 minimum equals preheat, Máximo when CVN or material requirements apply.

Post-Weld Heat Treatment

D1.1 Section 7.8 PWHT requirements: when it applies, Temperatura ranges, and hold times.

Welding Standards Hub

All 80 welding codes covered by Flux: D1.x, ASME IX, API 1104, CSA W59, EN 1011-2, AS/NZS 1554.

CWI Readiness Check

15-question diagnostic across 5 BoK topics. ~4 minutes. Per-topic weakness report emailed.

Inspection

Certified Welding Inspector

AWS B5.1 CWI requirements: education, experience, exam format, and renewal.

Visual Weld Inspection

D1.1 Clause 8 VT Criterios de aceptación, Inspección sequence, and reject/accept decisions.

Table 8.1 Discontinuidad categories, the VT/RT/UT inspection sequence, and when Reparación is required.

NDE Requirements

When RT, UT, MT, and PT are required under D1.1 Clause 8. Tables 8.1-8.3 decision Guía.

Ultrasonic Testing

D1.1 UT Aceptación criteria, Class A through D indications, and scanning requirements.

Table 8.1 Socavado Límites for static and cyclic connections with Causas and repair guidance.

Table 8.1 Porosidad acceptance criteria — when porosity passes and when it fails Inspección Visual.

Symbol Reference

Weld Symbol Chart

Complete AWS A2.4 reference — every Tipo de soldadura, symbol anatomy, Lado de la flecha/Otro lado, finishing codes.

Fillet Weld Symbol

Leg size, throat, equal and unequal legs, intermittent fillet welds.

Printable PDF Chart

Print-optimized Símbolo de solda reference sheet. All Tipos, anatomy, finishing codes on one page.

What Does G Mean?

Grinding and finishing symbols per AWS A2.4 — G, M, C, H, P, R, U designators Explicado.

Preheat & Temperature

Maximum Interpass Temperature

D1.1 has no general max. Only A514, HPS70W, HPS100W have 400–450°F limits.

Cold Weather Welding

Below 32°F: preheat to 70°F. Below 0°F: welding prohibited. Wind shelter 5 mph.

Table 3.2/5.11 Explained

Table 3.2 is now Table 5.11. Seven preheat categories A through G by process and hydrogen level.

Dissimilar Metal Welding WPS

Use the highest preheat of either steel (§5.7.2). Metal de Aporte options and WPS writing guide.

Q&A

D1.1:2025 Preguntas de Soldadura with specific table and clause citations.

A36 Preheat Temperature

Table 5.11 preheat requirements for A36 steel by process Categoría and thickness.

Electrode Comparación from a D1.1 compliance perspective — preheat, storage, qualification.

Minimum Fillet Weld Size

Table 7.7 explained — which thickness governs and how Electrodo choice changes the answer.

Carbon Equivalent Explained

D1.1 Annex B CE(IIW) formula with (Mn+Si)/6, Pcm, and what your Resultado means for preheat.