# Heat Treater's Guide Companion > Reference guide for steel, aluminum, and magnesium alloys and heat treating procedures. (iPhone/iPad app by PFI Knowledge Solutions Ltd.) - Source: https://appshunter.io/ios/app/heat-treaters-guide-companion/id702178173 (this page in markdown: same URL + `.md`) - Developer: [PFI Knowledge Solutions Ltd](https://appshunter.io/developer/702178176) - Category: Reference, Books - Price: Free - Rating: 4.40/5 from 10 App Store ratings · 4 written reviews indexed - Age rating: 4+ - Requires: iOS 6.0 · 6 MB - Languages: English - Released: 2013-09-16 - Data updated: 2026-06-07 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/heat-treaters-guide-companion/id702178173/reviews.md ## What is Heat Treater's Guide Companion? The Heat Treater’s Guide Companion, created by ASM International and the ASM Heat Treating Society, provides ready reference data on more than 430 steel, aluminum, and magnesium alloys. Content includes chemical composition, similar U.S. and foreign alloys, characteristics, and recommended heat treating procedures. The app can be used by itself or as a companion to the ASM Heat Treater’s Guide print and online database products, which provide additional heat treating data such as representative micrographs, isothermal transformation diagrams, cooling transformation diagrams, tempering curves and data on dimensional change. ASM International serves materials professionals, nontechnical personnel, and managers worldwide by providing high-quality materials information, education and training, networking opportunities, and professional development resources. The ASM Heat Treating Society is the world’s premier membership society dedicated to the advancement of heat treating as a theoretical and applied discipline. ## Key features - 430+ alloy data - Chemical composition - Similar U.S. and foreign alloys - Characteristics - Heat treating procedures - Companion to databases ## Recent user reviews (4 of 4) All indexed reviews: https://appshunter.io/ios/app/heat-treaters-guide-companion/id702178173/reviews.md ### 4/5 — Overall good *2022-06-01* Overall, this app is good and informative. HOWEVER, it is very limited in the amount of information as not all steels are listed. REALLY needs to be updated. Steels such as 80CRV2 and 15N20 are not listed at all. ### 5/5 — Literally the best app ever *2019-10-09* Literally the best app ever ### 3/5 — Back button *2015-11-11* Info is good, back button doesn't work though. ### 2/5 — Needs more data *2013-09-19* This is an interesting app, but it needs more data under each steel to be useful. ## Frequently asked questions about Heat Treater's Guide Companion ### What alloys are covered by Heat Treater's Guide Companion? Heat Treater's Guide Companion provides data on over 430 steel, aluminum, and magnesium alloys. This includes their chemical composition, similar U.S. and foreign counterparts, characteristics, and recommended heat treating procedures. ### Is Heat Treater's Guide Companion available on Android? Based on the provided data, Heat Treater's Guide Companion is available for iPhone, iPad, and iPod. Information regarding Android compatibility is not available. ### How often is Heat Treater's Guide Companion updated? The latest version of Heat Treater's Guide Companion is 3.1.0, which was last updated on November 18, 2015. This indicates a less frequent update schedule. ### What is the age rating for Heat Treater's Guide Companion? Heat Treater's Guide Companion has an age rating of 4+. This suggests it is suitable for a wide audience, including younger users interested in technical information. ### Does Heat Treater's Guide Companion offer offline access? The description does not explicitly state whether Heat Treater's Guide Companion offers offline access. However, as a reference guide, it is likely designed to be accessible without a constant internet connection. ### What is the user rating for Heat Treater's Guide Companion? Heat Treater's Guide Companion has a user rating of 4.3 stars based on 9 ratings. This indicates a generally positive reception from its users. ### Can Heat Treater's Guide Companion be used with other ASM products? Yes, Heat Treater's Guide Companion can be used by itself or as a companion to the ASM Heat Treater’s Guide print and online database products. These databases offer additional heat treating data. ### What kind of information does the app provide about alloys? The app provides details on chemical composition, similar U.S. and foreign alloys, characteristics, and recommended heat treating procedures for the covered alloys. ## Version history (last 5 releases) ### 3.1.0 — 2015-11-18 This app has been updated by Apple to display the Apple Watch app icon. Bug fix to resolve back button problems caused within IOS 9.1 ### 3.0.0 — 2015-06-13 Added more than 100 wrought and cast aluminum and magnesium alloys. ### 2.1.0 — 2014-12-05 Minor bug fixes ### 2.0.0 — 2014-07-02 This update contains additional steels (tool steels, stainless, and ultra-high strength), and enhanced searching. ### 1.0 — 2013-09-16 No release notes. ## Apps similar to Heat Treater's Guide Companion | App | Rating | Price | Category | | --- | --- | --- | --- | | [Heat Treatment by AZoNetwork](https://appshunter.io/ios/app/heat-treatment-by-azonetwork/id974028060) | 3.0 (2) | Free | Reference | | [Steel Profiles](https://appshunter.io/ios/app/steel-profiles/id564614324) | 4.7 (269) | Free | Reference | | [Miller Weld Setting Calculator](https://appshunter.io/ios/app/miller-weld-setting-calculator/id452837820) | 3.9 (78) | Free | Reference | | [Knife Rights LegalBlade™](https://appshunter.io/ios/app/knife-rights-legalblade/id893577805) | 3.1 (18) | Free | Reference | | [I.D. 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User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-07.*