301si For High Strength Applications
301 has been long used for compression spring applications. Full Hard and Extra Full Hard tempers have been the most commonly ordered conditions for traditional spring applications.
For those customers whose applications require high ductility at extra hard tempers beyond the traditional 301 capabilities, Ulbrich offers 301si.
301si has more formability at super high tensiles due to the increase of silicon in the base metal.
Standard 301 has a silicon content of 1.0 max and 301 si increases that content to 1.0 -1.35. The extra silicon allows for good ductility at higher tensile strengths, increasing formability with less cracking. 301si improves the material’s ductility because yield strength is not as limited as with traditional 301.
Both traditional 301 and 301si are produced to ASTM A666
Typical End Uses for 301si:
- Super high strength springs
- Snap Domes
- Consumer Appliance
- Blades and Cutlery
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