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| Customization: | Available |
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| Standard: | GB |
| Technique: | Cold Drawn |
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Material | Primary Alloy | 304 Stainless Steel(ASTM A276/A479), chosen for its excellent combination of strength, formability, weldability, and corrosion resistance. |
Material Certification | Mill Test Certificate provided confirming composition and mechanical properties. | |
Standard Dimensions | Diameter Range | Standard:3 mm to 25 mm. Micro:< 3 mm (precision ground). Large:> 25 mm (machined from bar). |
Length Range | Standard:50 mm to 500 mm. Short/Long:Custom lengths from 10 mm to 2000+ mm available. | |
Geometric Features & Tolerances | Diameter Tolerance | Standard Machined:±0.05 mm. Precision Ground:±0.005 mm to ±0.02 mm. Honed:±0.002 mm (for bearing surfaces). |
Straightness Tolerance | Standard:0.1 mm per 300 mm. High Precision:0.02 mm per 300 mm. | |
Thread Specifications | Types:Metric (e.g., M4, M6), Unified (e.g., 1/4-20, 3/8-16), Acme, or custom. Tolerance Class:6g (external), 6H (internal) standard. Custom classes available. | |
Mechanical Properties | Typical 304 (Annealed) Properties | Tensile Strength:515 MPa min. Yield Strength (0.2% Offset):205 MPa min. Elongation:40% min. Hardness:HRB 92 max (Annealed). Can be cold-worked for higher strength. |
Surface Finish | As-Machined/Turned | Ra 1.6 μm to 3.2 μm. |
Ground | Ra 0.4 μm to 0.8 μm. | |
Polished/Electropolished | Ra ≤ 0.2 μm (Bright), Ra ≤ 0.1 μm (Mirror). | |
Corrosion Resistance | Standard Treatment | Passivation per ASTM A967 (Method preferred: Nitric Acid or Citric Acid). |
Custom Features | End Configurations | Plain, Threaded (internal/external), Tapered (Morse taper, custom), Drilled & Tapped, Slotted, Hex/Square drive. |
Intermediate Features | Flats, grooves (for circlips/retaining rings), cross-holes, radial holes, knurling. | |
Markings | Laser-etched depth scales (e.g., in mm/cm), part numbers, batch codes, arrows. | |
Performance & Compatibility | Sterilization Compatibility | Fully compatible with standard hospital sterilization methods: Autoclave (Steam):Up to 135°C. Chemical (EtO, Hydrogen Peroxide Plasma). Gamma Radiation. |
Biocompatibility | 304 Stainless Steel is generally considered biocompatible for non-implant, non-long-term contact applications. For prolonged internal contact, 316L is recommended. | |
Quality Assurance | Inspection | 100% dimensional inspection of critical features. First Article Inspection (FAI) reports provided. |
Traceability | Full material and production lot traceability. | |
Production & Lead Time | Prototype Lead Time | 2 - 4 weeks. |
Production Lead Time | 4 - 8 weeks (depending on complexity and order volume). | |
Minimum Order Quantity (MOQ) | Low for prototypes; negotiable for production runs. | |











