Short answer: Shot peening bombards a part with small round shot so the surface yields in compression, creating a residual compressive layer that closes micro-cracks and can multiply fatigue life — essential for springs, gears, turbine blades and aircraft parts.
At a Glance
What Shot Peening Does
Each shot impact plastically deforms the surface, leaving a thin layer under residual compression. Because fatigue and stress-corrosion cracks start at the surface in tension, that compressive layer dramatically raises the safe load and life — the fatigue basis is in Metal Fatigue Endurance Limit and the SCC link in Stress Corrosion Cracking. It is a different job from Shot Blasting Vs Sandblasting, which only cleans and profiles the surface without inducing a beneficial stress state.
Media, Intensity and Coverage
Steel or ceramic round shot is thrown at controlled velocity; intensity (Almen strip) and coverage (percent of surface) are specified and measured, not guessed. Glass-bead peening gives a gentler finish plus mild strengthening; laser peening reaches deeper and more precisely for critical rotating parts. The process follows the same surface discipline as Metal Surface Treatment Guide and often follows Nitriding Vs Carburizing or Stress Relieving Vs Annealing for a combined effect.
Applications & Sourcing
Peening is specified for springs, gears, crankshafts, connecting rods, turbine and compressor blades, weld toes and landing-gear parts. HXSCO supplies the high-strength base material — Spring Steel Supplier strip, Alloy Steel Supplier bar, Titanium Supplier and Aluminum 7075 Properties forgings — and arranges peening to your Almen spec, with the material certificate per Mill Test Certificate Guide.
Get a Quote
Tell HXSCO your requirements and we will respond with a competitive quote and lead time.
Frequently Asked Questions
Shot peening fires small round shot at a part so the surface compresses, creating a residual compressive layer that closes micro-cracks and greatly extends fatigue life.
Shot blasting cleans and profiles the surface; shot peening deliberately induces a beneficial compressive stress layer to improve fatigue and corrosion-fatigue resistance.
Yes. By putting the surface in compression, peening can multiply fatigue life for springs, gears, blades and other cyclic-load parts.
Yes. HXSCO supplies high-strength base material and arranges shot peening to Almen specification with mill certificates.
Strengthen Parts with HXSCO
HXSCO supplies springs, gears and high-strength stock and arranges shot peening to Almen specification with mill certificates. Send your part and spec for a quote.