Contact US

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Spring material. Corrosion resistant, Fatigue resistant

Spring material. Corrosion resistant, Fatigue resistant

Spring material. Corrosion resistant, Fatigue resistant

I need to find an ideal spring material.
Cost is not an issue, so it may be an exotic.
The material must not be poisonous, e.g. no Berylium Bronze. This material would ideally have a Finite fatigue limit (Endurance limit), or at least a high strength up to 10^7 cycles minimum. The product is Musical instrument free reeds. Fatigue makes them go flat. Many instruments have many of them. Harmonica players breath through them.

Any suggestions of materials, and where I might find S-N curves for them appreciated.

Dave Fowler B.E.(Mech)UNSW Australia

RE: Spring material. Corrosion resistant, Fatigue resistant

The ideal spring material has the highest ratio of fatigue strength squared divided by elastic modulus.  Thus, titanium alloys, spring steels, and fiber-reinforced composites have the highest ratios.  The next step is to look for suppliers of semi-materials (sheet, plate, rod, etc.) that meet your geometry requirements.  Member TVP probably can supply good suppliers for you.  Good luck.

Please see FAQ731-376 for tips on how to make the best use of Eng-Tips Fora.

RE: Spring material. Corrosion resistant, Fatigue resistant

I am not very familiar with the internals of musical instruments, but I am assuming that free reeds require "flat" springs rather than helical compression springs, etc.  Please correct me if I am wrong.  For flat springs that require high fatigue strength and good corrosion resistance, I would recommend investigating stainless steel alloys with the correct spring temper.  

Somers Thin Strip, part of Olin Brass, is a supplier of cold-rolled stainless steel spring materials.  Check out the properties for Spring and Special Spring temper material:


Other producers of high quality, high strength stainless steel strip include Sandvik and Hitachi.  You can obtain more information from their websites:

click on Strip Steel


RE: Spring material. Corrosion resistant, Fatigue resistant

The information on Somers was good. They make super full hard 301 stainless with YIELD strength up to 300,000 PSI.

RE: Spring material. Corrosion resistant, Fatigue resistant

It might be possible to make such a piece out of glass or ceramic. Some candidate ceramics are ZrO2, Diamond (ultimate choice) and silicon nitride. You would be surprised that some ceramics can be made with elastic bend capability. They also have superlative acoustic properties and fatigue limits.

I know the ceramic field very well, if you need more info. How many of these do you need?

RE: Spring material. Corrosion resistant, Fatigue resistant

Hi Merlinz,

We are using the material 51420 St. Steel and our application also requires fatigue and corrosion resistance. We are producing components for artificial lims.
Pls find a list of sp.material & astm list

Hope the info is satisfactory...


Spring Material ASTM Reference
Music Wire  ASTM A228 (0.80%-0.95% carbon)  
Oil-Tempered MB Grade  ASTM A229 (0.60%-0.70% carbon)  
Oil-Tempered HB Grade  SAE 1080 (0.75%-0.85% carbon)  
Hard-Drawn MB Grade  ASTM A227 (0.60%-0.70% carbon)  
Cold-Rolled Spring Steel, Blue-Tempered or Annealed  SAE 1074, 1064, 1070 (0.60%-0.80% carbon)  
Cold-Rolled Spring Steel, Blue-Tempered Clock Steel  SAE 1095 (0.90%-1.05% carbon)  
Chromium Vanadium  ASTM A231  
Chromium Silicon ASTM A401  
Stainless Type 302  ASTM A313 (18% chromium, 8% nickel)  
Stainless Type 304  ASTM A313 (18% chromium, 8% nickel)  
Stainless Type 316  ASTM A313 (18% chromium, 12% nickel, 2% molybdenum)  
Stainless Type 17-7  ASTM A313 (17% chromium, 7% nickel)  
Stainless Type 414  SAE 51414 (12% chromium, 2% nickel)  
Stainless Type 420  SAE 51420 (13% chromium)  
Stainless Type 431  SAE 51431 (13% chromium)  
Spring Brass  ASTM B134 (70% copper, 30% zinc)  
Phosphor Bronze  ASTM B159 (95% copper, 5% tin)  
Beryllium Copper  ASTM B197 (98% copper, 2% beryllium)

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members! Already a Member? Login


Low-Volume Rapid Injection Molding With 3D Printed Molds
Learn methods and guidelines for using stereolithography (SLA) 3D printed molds in the injection molding process to lower costs and lead time. Discover how this hybrid manufacturing process enables on-demand mold fabrication to quickly produce small batches of thermoplastic parts. Download Now
Design for Additive Manufacturing (DfAM)
Examine how the principles of DfAM upend many of the long-standing rules around manufacturability - allowing engineers and designers to place a part’s function at the center of their design considerations. Download Now
Taking Control of Engineering Documents
This ebook covers tips for creating and managing workflows, security best practices and protection of intellectual property, Cloud vs. on-premise software solutions, CAD file management, compliance, and more. Download Now

Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close