Hardness Conversion Master
ASTM Hardness Converter Pro
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
Essential for professionals! Instantly convert 15 metal hardness scales: HRC, HRA, HRB, HRD, HRF, HR15N, HR30N, HR45N, HR15T, HR30T, HR45T, HB, HBW, HV, MPa. Download ...
A professional hardness conversion tool designed for mechanical engineering, metal heat treatment, and quality management, providing quick, stable, and traceable engineering reference data.
**Key Features**
1. **Industrial-Grade Precision**
The conversion logic is based on ASTM E140 / ASTM A370 standards, utilizing high-density reference points and linear interpolation to deliver stable and reproducible conversion results.
2. **Flexible Input and Real-Time Synchronization**
Allows direct input in any hardness field (e.g., HRC / HV / HBW), with real-time conversion across other units, enhancing on-site operational efficiency.
3. **Physical Range Protection Mechanism**
Built-in effective range checks for each scale, displaying "No Reference Value" when out of range, reducing the risk of misinterpretation.
4. **Customizable Interface**
Enables toggling unit displays and drag-and-drop sorting to create a workspace tailored to individual or production line processes.
5. **Image Conversion (Beta)**
Supports photo/album import, area selection recognition, result comparison, and manual correction, suitable for quick conversion of reports and on-site records.
6. **Batch Conversion**
Allows multiple data entries for rapid conversion, retaining the last used unit preference to minimize repetitive actions.
**Supported Units**
- Rockwell: HRC, HRA, HRB, HRD, HRF
- Superficial Rockwell: HR15N, HR30N, HR45N, HR15T, HR30T, HR45T
- Brinell: HB, HBW
- Vickers: HV
- Tensile Strength: MPa
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
- Added multilingual support
- Introduced batch conversion
- Introduced batch image conversion (beta version)
- Added built-in user guide
- Optimized interface
- Stability and performance enhancements
The developer, POYU WANG, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
- Identifiers
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Identifiers
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- POYU WANG
- Size
- 169.1 MB
- Category
- Utilities
- Compatibility
Requires iOS 17.6 or later.
- iPhone
Requires iOS 17.6 or later. - iPad
Requires iPadOS 17.6 or later. - Mac
Requires macOS 14.6 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.3 or later.
- iPhone
- Languages
English and 14 more
- English, French, German, Hindi, Italian, Japanese, Korean, Polish, Portuguese, Simplified Chinese, Spanish, Thai, Traditional Chinese, Turkish, Vietnamese
- Age Rating
4+
- 4+
- Contains
Advertising
- In-App Purchases
Yes
- Unlock Pro $1.99
- Copyright
- © 2026 Poyu Wang
