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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.

What’s New

Version 1.93

Fixed db access crash
Improved db synchronization logic
Removed invalid "other" element entry in the elements list
Performance improvements
Changed crash handler

Ratings and Reviews

4.9 out of 5
349 Ratings

349 Ratings

w4shep ,

VERY Useful !!

This app is very useful for me. I’m a bit of a steel nerd and like to make sure of the quality of the steel before purchasing any knife. And this app has never let me down. Easy to use and seems very up to date. With so many different steels and variations on both steel names and steel content, this app makes it easy to locates the steel I’m searching for. Great job!
I wonder how difficult it would be to add links to the most common steels to actual steel vendors so one could purchase the steel? I’d pay for that upgrade to have that info all in one place.
PS: As a native English speaker, I don’t care if there are some minor spelling or grammatical errors as long as the steel data and name are correct.

ShawBamm ,

Thanks for making me look smart.

So, when buying knives, many throw the steel types of the knives they are selling around as if they know what they are talking about. NOT! I pull up the app, never saying a word about such a comprehensive app I am reviewing and figure out wether I buy or walk. Most times, I am walking away. I also, in my own way, determine a price I am willing to pay for a knife post the app review. Sometimes, depending on the seller I may engage him with some verbal knife fighting, and get my price. Looking for updates to keep me looped in. Thank you kindly.
Retired FLEO, Chicago, IL.

Developer Response ,

Thanks for the feedback. Alloy names database is updated frequently, well as I get the new data and it's available on the device after next synchronization. Application updates happend 1-2 times a year depends on how much free time I have, unless I find a crash that needs immediate attention.

jnani6 ,

Always know what you’re getting

This is extremely useful so that you know the composition of the steel you are getting. I never believe the hype, unless it matches the facts, in which case it changes from hype to facts. “High carbon” becomes high carbon when the composition findings confirm that. Never buy a knife without knowing what it is really made of. It’s too bad razor blade makers don’t tell what steel they use, much less it’s composition. So far, I have found just one that does that.

App Privacy

The developer, ZviSoft LLC, has not provided details about its privacy practices and handling of data to Apple. For more information, see the developer’s privacy policy.

No Details Provided

The developer will be required to provide privacy details when they submit their next app update.


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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