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
°F
Preheat Calculator
D1.1:2025 Tabla 5.11 lookup. Select steel, process, and Espesor — get Mínimo preheat and Temperatura entre Pasadas.
kJ
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.
lb
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.
CE
Carbon Equivalent
Calculate CE(IIW) and Pcm from steel chemistry to assess Soldabilidad and Templabilidad.
D1.1 Reference
WS
WPS Guide
What goes into a WPS under D1.1. Precalificado vs qualified, Table 5.5 essential variables, format Requisitos.
WP
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.
PW
Prequalified WPS
Clause 5 requirements for prequalification: approved processes, Table 5.6 steels, Figure 5.1 joints.
PQ
PQR — Procedure Qualification
When a PQR is required under D1.1. Table 6.6 essential variables and the prequalified exception.
D1
AWS D1.1:2025 Overview
What D1.1 covers, 11-Cláusula overview, prequalified vs qualified WPS paths.
CJ
CJP Weld Guide
Complete joint penetration welds: prequalified joints per Figure 5.1, Respaldo requirements, CJP vs PJP.
MT
Mill Test Report (MTR)
How to read an MTR for D1.1 compliance: ASTM spec to Table 5.6 group to preheat lookup.
T°
Interpass Temperature
D1.1 minimum equals preheat, Máximo when CVN or material requirements apply.
HT
Post-Weld Heat Treatment
D1.1 Section 7.8 PWHT requirements: when it applies, Temperatura ranges, and hold times.
80
Welding Standards Hub
All 80 welding codes covered by Flux: D1.x, ASME IX, API 1104, CSA W59, EN 1011-2, AS/NZS 1554.
Inspection
CW
Certified Welding Inspector
AWS B5.1 CWI requirements: education, experience, exam format, and renewal.
VT
Visual Weld Inspection
D1.1 Clause 8 VT Criterios de aceptación, Inspección sequence, and reject/accept decisions.
8.1
Weld Defects
Table 8.1 Discontinuidad categories, the VT/RT/UT inspection sequence, and when Reparación is required.
ND
NDE Requirements
When RT, UT, MT, and PT are required under D1.1 Clause 8. Tables 8.1-8.3 decision Guía.
UT
Ultrasonic Testing
D1.1 UT Aceptación criteria, Class A through D indications, and scanning requirements.
UC
Weld Undercut
Table 8.1 Socavado Límites for static and cyclic connections with Causas and repair guidance.
PP
Weld Porosity
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.
G
What Does G Mean?
Grinding and finishing symbols per AWS A2.4 — G, M, C, H, P, R, U designators Explicado.
Preheat & Temperature
T°
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.
5.11
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.
A+B
Dissimilar Metal Welding WPS
Use the highest preheat of either steel (§5.7.2). Metal de Aporte options and WPS writing guide.
Q&A
?
Q&A Hub
D1.1:2025 Preguntas de Soldadura with specific table and clause citations.
A36
A36 Preheat Temperature
Table 5.11 preheat requirements for A36 steel by process Categoría and thickness.
70
E7018 vs E6013
Electrode Comparación from a D1.1 compliance perspective — preheat, storage, qualification.
△
Minimum Soldadura de Filete Size
Table 7.7 explained — which thickness governs and how Electrodo choice changes the answer.
CE
Carbon Equivalent Explained
D1.1 Annex B CE(IIW) formula with (Mn+Si)/6, Pcm, and what your Resultado means for preheat.