# Knife Steel Composition Chart > Knife steel alloy database with composition comparison and cross-referencing. (iPhone/iPad app by ZviSoft LLC.) - Source: https://appshunter.io/ios/app/knife-steel-composition-chart/id498892262 (this page in markdown: same URL + `.md`) - Developer: [ZviSoft LLC](https://appshunter.io/developer/498892265) - Category: Books, Reference - Price: Free - Rating: 4.90/5 from 554 App Store ratings · 122 written reviews indexed - Age rating: 4+ - Requires: iOS 9.0 · 4 MB - Languages: American English - Released: 2012-02-06 - Data updated: 2026-08-29 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/knife-steel-composition-chart/id498892262/reviews.md ## What is Knife Steel Composition Chart? Knife Steel Composition and name cross-reference database. Includes popular, high end and exotic alloys used in knife blades. Over 6500 alloy names, over 1000 compositions. Alloy names for 21 different international standards, proprietary names and their equivalents. Easy alloy composition comparison with bar graph in 3 modes: mass percentage, molar masses and atomic count per 1000 atoms. If you have suggestions for improvement, please contact me. Posting in the review that there's a room for improvement doesn't help me at all, I am not a designer, but a software engineer. Please report missing alloys, as in either post the alloy name, or contact me. Complaining in the review "I didn't find what I wanted" means very little. If you encounter any problems using the app, please contact me using email. Posting in the review you have a problem, won't give me enough information to fix it. Sorry, there will be no translations to any language. There is no team, I am just one person collecting steel data and coding the app on web and mobile platforms. I have neither time nor resources to keep constantly translating large database. Case CV has been the database for a long time. Search for Case does show in the results. Case isn't the steel maker though. ## Key features - Extensive alloy name database - Detailed composition data - Cross-reference international standards - Proprietary name equivalents - Bar graph composition comparison - Multiple comparison modes ## Recent user reviews (10 of 122) All indexed reviews: https://appshunter.io/ios/app/knife-steel-composition-chart/id498892262/reviews.md ### 5/5 — Excellent Resource *2026-07-29, version 1.93* I find myself checking this app almost daily. As a knife nerd, this is a very useful and easily accessible resource. ### 5/5 — Great app *2026-02-26, version 1.93* Been using this app for years now. It's a great reference for identifying and classifying different steels (not just for knives) from across the globe. ### 5/5 — Is the app still being updated? *2026-02-04, version 1.93* App is awesome but some relatively newer steels have not been added and the entries don’t seem to have been updated at all in like 4 years. ### 5/5 — Very Helpful App *2025-12-10, version 1.93* This app is very good for somebody who wants to be able to look up a kind of steel without having to go and search for. The only thing that had had was a way to compare different deals side-by-side. Considering it’s free there’s gotta be some give. ### 5/5 — Excellent tool *2025-11-30, version 1.93* If you’re a steel nerd, like to see the components of a given steel, this is for you. ### 5/5 — A must for a blade aficionado! *2025-06-22, version 1.93* I use this to learn and also judge my next purchases by. If you like blades of any kind. This is a must have app. I have collected knives for almost 50 years. I will open the app during a layover or waiting on a customer for a meeting. I learn something every time I open it up. ### 5/5 — Knife Enthusiast. *2025-06-18, version 1.93* Great resource for knife makers, dealers, or anyone who appreciates knives. ### 5/5 — Extremely helpful *2025-04-19, version 1.93* This app is awesome. I don’t even make knives or swords (yet) so it’s not only for those guys, i’m interested in the many steels available to us today for knife and especially sword making! This app has it all, the chemical makeup that a lot of us enthusiasts like to nerd out on, in search for the “perfect” steel(even though it doesn’t exist because it’s relative to your use and application of the steel so what’s “perfect” for one application wouldn’t be for another). Hence the need for such an app! To decipher what steels are best for what type of blades etc. Just get it! You will enjoy it if you have EVER looked up a steel’s composition, or if not, you can start now with this app! Here’s to your knowledge. ### 5/5 — Great Research tool *2025-02-10, version 1.93* Handy and educational ### 5/5 — Howell A *2025-02-04, version 1.93* Outstanding resource for KNIFE nerds everywhere! Highly recommend for anyone who enjoys knife, collecting or KNIFE making. ## Frequently asked questions about Knife Steel Composition Chart ### What does the Knife Steel Composition Chart app do? This app provides a comprehensive database of knife steel alloys, including over 6500 alloy names and more than 1000 compositions. It allows users to cross-reference alloy names from various international standards and proprietary names, and compare their compositions visually. ### How can I compare steel compositions in the app? The app offers an easy way to compare alloy compositions using bar graphs. You can view these comparisons in three different modes: mass percentage, molar masses, and atomic count per 1000 atoms, providing detailed insights into the differences between alloys. ### Is the app free to use? Yes, the application is available for free. There are no in-app purchases or advertisements mentioned, suggesting a completely free user experience. ### What if I can't find a specific alloy or encounter a problem? The developer encourages users to report missing alloys or any problems encountered directly via email. This provides the developer with the necessary information to improve the database and fix issues, rather than posting general feedback in reviews. ### What kind of steel alloys are included? The database includes popular, high-end, and exotic alloys commonly used in knife blades. It covers alloy names from 21 different international standards, along with proprietary names and their equivalents. ## Version history (last 5 releases) ### 1.93 — 2020-06-19 Fixed db access crash Improved db synchronization logic Removed invalid "other" element entry in the elements list Performance improvements Changed crash handler ### 1.92 — 2019-01-04 Fixes sort order to alphabetical in quick search. Multithreaded performance improvements. ### 1.91 — 2018-12-02 Fixes database synchronization. Support for iOS 11 and 12. Full screen support for iPhone X, XR, XS, etc. Search Improvements, alloys starting with search string are displayed first, followed by alloys containing the search string. Correct cleanup of the deleted alloy names from bookmarks. Error reporter email has To field correctly filled in. Performance improvements. Stability improvements and memory leak fixes. Streamlined UI look and feel. Latest db snapshot. ### 1.90 — 2018-11-30 Support for iOS 11 and 12. Full screen support for iPhone X, XR, XS, etc. Search Improvements, alloys starting with search string are displayed first, followed by alloys containing the search string. Implemented removal of the deleted alloy names from bookmarks. Performance improvements. Stability improvements and memory leak fixes. Streamlined UI look and feel. Latest db snapshot. ### 1.80 — 2016-09-30 Fixes a crash when tapping more button, iOS 10 specific. Reworked all views to support all device sizes correctly including iPhone 7/7+. Misc. performance optimizations. 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User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-29.*