# SUN-TEC

> SUN-TEC (iPhone/iPad app by SUN-TEC CORPORATION.)

- Source: https://appshunter.io/ios/app/sun-tec/id6469055994 (this page in markdown: same URL + `.md`)
- Developer: [SUN-TEC CORPORATION](https://appshunter.io/developer/1711446511)
- Category: Productivity
- Price: Free
- Age rating: 17+
- Requires: iOS 13.4 · 24 MB
- Languages: English
- Released: 2024-04-01
- Data updated: 2026-07-08
- User reviews in markdown: https://appshunter.io/ios/app/sun-tec/id6469055994/reviews.md

## What is SUN?

The SUN-TEC Hardness Converter is a tool for converting data from one hardness scale to another scale(s) and measuring the hardness of Metallic materials for your applications.

Features and Benefits:


- Convert between Rockwell, Vickers, Knoop, Brinell, and Leeb hardness scales.
- Minimum Thickness and Cylindrical corrections for Rockwell scales.
- Diagonal Length(s) conversion to Hardness and Hardness to Diagonal Length(s) for Vickers, Knoop, and Brinell scales.

Available Scales:


- HRA
- HRB
- HRC
- HRD
- HRF
- HR15N
- HR30N
- HR45N
- HR15T
- HR30T
- HR45T
- VICKERS
- KNOOP
- BRINELL
- LEEB (HLD)


Note: All information within this application tool is for reference only.


## Version history (last 3 releases)

### 2.1 — 2026-07-01

- Implemented Reverse Equations
- Minor Bugs Fixations

### 2.0 — 2026-06-17

- Option to do reverse calculations

### 1.0 — 2024-04-01

No release notes.

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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 2026-07-08.*