# F Numbers

> Welding filler metal grouping lookup tool based on ASME and AWS standards. (iPhone/iPad app by ASMEIX CORPORATION.)

- Source: https://appshunter.io/ios/app/f-numbers/id929309069 (this page in markdown: same URL + `.md`)
- Developer: [ASMEIX CORPORATION](https://appshunter.io/developer/911716652)
- Category: Productivity, Reference
- Price: Free
- Rating: 5.00/5 from 3 App Store ratings
- Age rating: 4+
- Requires: iOS 13.0 · 15 MB
- Languages: American English
- Released: 2014-11-17
- Data updated: 2026-06-01
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/f-numbers/id929309069/reviews.md

## What is F Numbers?

F Numbers: Quick lookup of filler metal groupings for welding procedure and performance qualification.  Lookup includes classifications with respective descriptions of intended use. Data is provided by C-spec. F-numbers and A-numbers assignments are based on ASME Section IX Table QW-432 and QW-442, ASME Section II Part C, AWS B2.1 Table B1 and B2, and AWS A5.1 through AWS A5.36.

## Key features

- Filler metal grouping lookup
- Welding procedure qualification
- Performance qualification data
- Classification descriptions
- ASME Section IX data
- AWS standards data


## Frequently asked questions about F Numbers

### What welding standards does F Numbers use?

F Numbers bases its data on ASME Section IX Tables QW-432 and QW-442, ASME Section II Part C, AWS B2.1 Tables B1 and B2, and AWS A5.1 through AWS A5.36.

### Is F Numbers available on Android devices?

Currently, F Numbers is available for iPhone, iPad, and iPod devices. There is no Android version listed.

### How often is F Numbers updated?

The app was last updated on September 10, 2024, indicating active development and maintenance.

### What is the age rating for F Numbers?

F Numbers has an age rating of 4+, making it suitable for a wide range of users.

### Does F Numbers have ads?

No, F Numbers does not contain advertisements. It is a completely ad-free application.

### What is the user sentiment for F Numbers?

Based on the provided data, F Numbers has a perfect 5.0-star rating from 3 reviews, indicating very positive user sentiment.

### Can I export data from F Numbers?

The provided description does not mention any data export functionality for F Numbers.

### Is F Numbers useful for performance qualification?

Yes, F Numbers specifically provides lookup for filler metal groupings relevant to welding procedure and performance qualification.

## Version history (last 5 releases)

### 2.2 — 2024-09-10

The API domain has changed. All APIs functionality is the same.

### 2.1 — 2024-06-13

- changed the display application name

### 2.0 — 2024-06-03

- Extended Data Table: Access an expanded dataset for more comprehensive weldability information.
- Performance Improvements: Experience faster load times and smoother navigation.
- Offline Mode: Use the app without an internet connection for increased convenience.
- Automatic Data Sync: Automatically upload and sync data changes without user intervention.
- New Design: Enjoy a refreshed, modern user interface.
- Dark Theme: Switch to a dark theme for a more comfortable viewing experience in low-light environments

### 1.0.15 — 2019-09-30

Updated F Numbers app with latest 2019 F Numbers data and specifications

### 1.0.8 — 2017-11-14

Updated 2017 P Numbers data and specifications. iOS 11 Ready

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## More apps by ASMEIX CORPORATION

- [P Numbers](https://appshunter.io/ios/app/p-numbers/id911716649)
- [Material Numbers](https://appshunter.io/ios/app/material-numbers/id6503355283)
- [WeldOffice](https://appshunter.io/ios/app/weldoffice/id6615075038)

All apps by ASMEIX CORPORATION: https://appshunter.io/developer/911716652

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-01.*