Product Parameters
| Item | Specification |
|---|---|
| Material | Carbon Steel, Alloy Steel, Stainless Steel, Aluminum |
| Peening Media | Ceramic, Glass, Steel |
| Surface Stress | 200–400 ksi (compressive) |
| Application | Fatigue life enhancement, stress peening, surface cleaning |
| Standard | AMS 2430, Boeing BMS7-series |
| MOQ | 10 pcs |
description
Shot peened components have controlled compressive stress introduced into the surface layer by bombarding the surface with small spherical media - the impact creates plastic deformation that compresses the surface and introduces compressive residual stress. The result is significantly improved fatigue life, particularly for components that experience cyclic loading where fatigue failure is the primary failure mode. The compressive stress layer extends from the surface inward - typically 0.1 to 0.5 mm deep depending on peening intensity and material. This layer counteracts the tensile stresses that develop at the surface during cyclic loading, delaying the crack initiation that leads to fatigue failure. Aerospace and automotive critical components are routinely shot peened - connecting rods, crankshafts, turbine blades, landing gear components.
When to Peen in the Process
Shot peening is typically specified after heat treatment and final machining but before surface treatment or plating - the compressive stress layer must be intact when the component enters service. Plating over shot peened surfaces can reduce the benefit if the plating process introduces tensile stress.
FAQ
Q1: MOQ?
A1: 10 pieces.
Q2: Materials?
A2: Carbon steel, alloy steel, stainless steel, aluminum - most metals respond to shot peening.
Q3: Standards?
A3: AMS 2430 and Boeing BMS7-series for aerospace applications.
Q4: Compressive stress achieved?
A4: 200–400 ksi compressive stress in surface layer depending on material and peening parameters.
Q5: When to peen in process?
A5: After heat treatment and final machining, before surface treatment or plating.
Q6: Verification?
A6: Yes. Almen strip testing and coverage verification available.
Quality is non-negotiable in precision manufacturing. Every component undergoes rigorous inspection at each stage of production.
- AS/EN/JISQ 9100 - Aerospace quality management for flight-critical and structural parts
- NADCAP - Accredited special processes including heat treatment, NDT, and surface treatment
- DFARS / ITAR - Compliant supply chain for defense and space applications
- Boeing DMS / Airbus SP - Customer-specific requirements documentation available
- Passivation / Electropolishing - ASTM A967 procedures for corrosion resistance
- Material Traceability - Heat number tracking from raw material to finished part
From raw material to finished product, every step is controlled and documented:
- Material Preparation - Bar or forging stock selection with material certification
- Rough Machining - CNC turning/milling to gear blank profile
- Gear Cutting - Hobbing, shaping, or milling for gear tooth geometry
- Heat Treatment - Carburizing, induction hardening, or through-hardening
- Grinding / Finishing - Gear tooth grinding for AGMA 10+ quality levels
- Inspection - Lead, involute, and tooth thickness measurement against drawing
- Cleaning & Packaging - Rust prevention oil coating and protective packaging
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