Precision 304 Stainless Steel CNC Machining Services
PRECI5 delivers ISO-certified 304 stainless steel CNC machining for mission-critical industrial assemblies. From rapid prototypes to high-volume production batches, our Shenzhen facility utilizes rigid 5-axis Mazak machining centers, aggressive toolpath optimization, and calibrated ZEISS metrology to guarantee uncompromising dimensional accuracy and surface integrity.
Process Engineering
Mastering 304 Machining Challenges
Austenitic 304 stainless steel exhibits high ductility and rapid work hardening. Without rigorous toolpath control and effective thermal dissipation, tooling deteriorates rapidly, jeopardizing surface finishes and dimensional tolerances.
Work Hardening Mitigation
We apply calculated constant feed rates and positive rake angle tooling to systematically cut beneath the strain-hardened layer produced by prior cutting passes.
Targeted Heat Management
With a thermal conductivity of just 16.2 W/m·K, 304 traps thermal energy in the shear zone. High-pressure through-spindle coolant continuously evacuates heat, preventing deformation and tool galling.
Engineered Chip Breaking
Due to high ductility, 304 yields continuous stringy chips. We utilize dedicated chip-curling geometries and custom pecking cycles to prevent swarf accumulation around the spindle.
Structural Machine Rigidity
Cutting forces remain heavy on 304 precision parts. Our solid cast-iron Mazak foundations eliminate vibration harmonic resonance, preserving micro-inch surface finishes and thread fidelity.
Material Intelligence
Stainless Steel Technical Specifications
Review empirical mechanical metrics and grade comparison data to validate your part geometry and functional criteria.
Typical Mechanical Properties (Annealed 304 Stainless Steel)
Standard Reference Data| Property | Typical Metric Value |
|---|---|
| Density | 8.0 g/cm³ |
| Tensile Strength | 515 MPa |
| Yield Strength | 205 MPa |
| Hardness (Brinell) | 201 HB |
| Elongation (in 50mm) | 40% |
| Thermal Conductivity (at 100°C) | 16.2 W/m·K |
Grade Selection Matrix: 304 vs 316 Stainless
Design & Procurement Decision Guide| Evaluation Criteria | 304 Stainless Steel | 316 Stainless Steel |
|---|---|---|
| Corrosion Resistance | Excellent for standard atmospheric, washdown, and mild acidic environments. | Superior protection; contains 2-3% Molybdenum to resist chloride pitting and halides. |
| Machinability Profile | Moderate machinability; requires work-hardening mitigation. | Slightly lower machinability due to alloy chemistry and higher wear coefficients. |
| Target Applications | Robotics, automation enclosures, mounting brackets, structural manifolds. | Marine hardware, medical implant tooling, aggressive chemical processing valves. |
| Cost Efficiency | Industry standard baseline; cost-effective for volume production. | Approximately 20-30% raw material premium based on global molybdenum markets. |
Production Capacity
Multi-Axis CNC Equipment Fleet
Our multi-axis capabilities eliminate intermediate reclamping, guaranteeing concentricity and tight angular relationships across complex 304 machining services.
Mazak C600 Centers
8 operational units dedicated to simultaneous 5-axis contoured stainless profiles.
- Working Envelope 900 × 900 × 700 mm
- Max Spindle Speed Up to 24,000 RPM
- Primary Capability Deep pockets, angled bores
Mazak QTC & QTE Series
22 high-rigidity turning and mill-turn centers with driven tooling for complete single-setup parts.
- Machining Capacity X 300 / Z 500 / Φ350 mm
- Spindle Speed Up to 6,000 RPM
- Primary Capability Precision shafts & threaded collars
Total Machine Fleet
114 CNC units supporting seamless progression from low-volume prototypes to repeat runs.
- Machine Precision 0.003 mm
- Production Model Rapid batch to mass production
- Facility Location Shenzhen, Global Logistics
Quality Assurance
Calibrated ZEISS Metrology & Inspection
Because 304 stainless steel parts are widely used in structural and fluid environments, verifying GD&T (Geometric Dimensioning and Tolerancing) is critical. Our quality lab operates under strict climate controls to avoid thermal expansion bias during measurement.
Surface Roughness Testers
Verifying sealing and aesthetic surface finishes down to Ra 0.4 µm.
2.5D Optical Measuring Systems
Non-contact optical inspection for delicate thread pitches and micro-hole arrays.
Concentricity Testers
Dedicated runout and coaxial check fixtures for turned shafts and bearing bores.
Rockwell & Vickers Hardness
Material validation to confirm raw stock compliance and stress-relief status.
Procurement & Logistics
Engineered for International Supply Chains
DFM Engineering
Prompt feedback on tool access, internal corner radii, and stainless chip evacuation prior to cutting.
Full Documentation
Detailed FAI (First Article Inspection) reports, raw material certs (MTRs), and finish verification data.
Shenzhen Hub
Direct export air and ocean logistics channels providing predictable global transit timelines.
Direct Communication
English-speaking technical project managers ensuring your design tolerances are strictly observed.
Initiate Project
Upload Your 304 Stainless Drawing
Send your CAD models (STEP, IGES, or 2D PDF) to receive a rapid manufacturing feasibility assessment, toolpath optimization guidance, and a formal quote.