Free Welding Calculators & Reference
Welding Calculators & Reference
Free welding calculators and reference tools for AWS D1.1:2025 and A2.4. 予熱, 入熱, fillet サイズ, 炭素当量 — plus symbol charts, 適合 guides, and Q&A for fabricators and inspectors.
Calculators
°F
Preheat Calculator
D1.1:2025 表 5.11 lookup. Select steel, process, and 板厚 — get 最小 preheat and パス間温度.
kJ
Heat Input Calculator
Calculate heat input in kJ/in and kJ/mm from 電圧, 電流, and 溶接速度.
△
Fillet 溶接 Size
D1.1 Table 7.7 minimum すみ肉溶接サイズ lookup by material thickness.
lb
Deposition Rate
Calculate 溶接金属 溶着速度 in lbs/hr and kg/hr from ワイヤ送給速度 and 電極径.
CE
Carbon Equivalent
Calculate CE(IIW) and Pcm from steel chemistry to assess 溶接性 and 焼入性.
D1.1 Reference
WS
WPS Guide
What goes into a WPS under D1.1. 事前認定 vs qualified, Table 5.5 essential variables, format 要求事項.
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.
CW
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
EOR Weld 仕様書 Drawings
What belongs in 契約図書 vs 施工業者 WPS details under D1.1 Clauses 1.5 and 5.2.
T
Weld Group Torsion
Double すみ肉溶接 group torsion: force-couple spacing, eccentricity, and D1.1 条項 4.7 boundaries.
FAT
D1.1 Fatigue Categories
Table 4.5 fatigue stress categories, threshold ranges, and the difference from preheat categories.
GAS
ER80 vs ER90 (シールドガス)
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
GMAW Shielding Gas
D1.1:2025 Clause 5.6.4 gas substitution paths, Table 5.10 ranges, OE formula, and flow-rate tolerance.
FLG
Welding Across I-Beam Flanges
D1.1 Table 4.5 fatigue categories for transverse welds across beam flanges, plus D1.5 FCM context.
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-clause overview, prequalified vs qualified WPS paths.
CJ
CJP Weld Guide
Complete joint penetration welds: prequalified joints per Figure 5.1, バッキング 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, 最大 when CVN or material requirements apply.
HT
Post-Weld Heat Treatment
D1.1 Section 7.8 PWHT requirements: when it applies, 温度 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.
15Q
CWI Readiness Check
15-question diagnostic across 5 BoK topics. ~4 minutes. Per-topic weakness report emailed.
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 受入基準, 検査 sequence, and reject/accept decisions.
8.1
Weld Defects
Table 8.1 不連続 categories, the VT/RT/UT inspection sequence, and when 補修 is required.
ND
NDE Requirements
When RT, UT, MT, and PT are required under D1.1 Clause 8. Tables 8.1-8.3 decision ガイド.
UT
Ultrasonic Testing
D1.1 UT 合否基準 criteria, Class A through D indications, and scanning requirements.
UC
Weld Undercut
Table 8.1 アンダカット 限界値 for static and cyclic connections with 原因 and repair guidance.
PP
Weld Porosity
Table 8.1 気孔 acceptance criteria — when porosity passes and when it fails 外観検査.
Symbol Reference
◻
Weld Symbol Chart
Complete AWS A2.4 reference — every 溶接の種類, symbol anatomy, 矢の側/反対側, finishing codes.
◻
Fillet Weld Symbol
Leg size, throat, equal and unequal legs, intermittent fillet welds.
↓
Printable PDF Chart
Print-optimized 溶接記号 reference sheet. All 種類, 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 解説.
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). 溶加材 options and WPS writing guide.
Q&A
?
Q&A Hub
D1.1:2025 溶接Q&A with specific table and clause citations.
A36
A36 Preheat Temperature
Table 5.11 preheat requirements for A36 steel by process カテゴリー and thickness.
70
E7018 vs E6013
Electrode 比較 from a D1.1 compliance perspective — preheat, storage, qualification.
△
Minimum Fillet Weld Size
Table 7.7 explained — which thickness governs and how 電極 choice changes the answer.
CE
Carbon Equivalent Explained
D1.1 Annex B CE(IIW) formula with (Mn+Si)/6, Pcm, and what your 結果 means for preheat.