SUZHOU POLESTAR METAL PRODUCTS CO., LTD
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Passivated SUS316 Medical Stainless Steel Injection Molding Surgical Knife Handle
Product Analysis
Material and process:
Aerosolized 440C stainless steel powder (C: 1.0%, Cr: 17%, Mo: 0.6%)
Hot isostatic pressing (HIP 1180 ° C/100MPa) achieves 99.98% density
Surface performance:
Vacuum quenching+cryogenic treatment, surface hardness HV600 ± 20 (ISO 6507)
CrN coating (3 μ m), friction coefficient ≤ 0.15 (ASTM G99)
Structural design:
Spiral groove silicon nitride ceramic particle reinforcement (increased wear resistance by 3 times)
Internal honeycomb cooling channel (mold temperature control accuracy ± 1.5 ° C)
Comparison of similar products
| This product(440C PM) | Traditional tool steel | Tungsten steel sintered parts | |
|---|---|---|---|
| High temperature resistance | 600°C Continuous work | 540°C soften | 800°C |
| Anti plastic corrosion | Resistant to acidic decomposition of PC/PA66/PEEK | PA66 is prone to hydrogen embrittlement | Corrosion resistant but three times more expensive |
| Lifespan (Fiberglass Reinforced Material) | 1200-1500hours | 400-600hours | 2000hours but prohne to be Collapse and Deficiency |
Typical application
In the automotive field:
Injection molding of long fiberglass PP bumper (barrel temperature 280-320 ° C)
Compared to traditional screw heads, the wear per unit output has been reduced by 62%, and the mold replacement cycle has been extended to 3 weeks
Electronic packaging:
LCP liquid crystal polymer 5G antenna injection molding (shear heat sensitive material)
The internal cooling channel causes the temperature fluctuation of the melt to be less than ± 2 ° C
Medical consumables:
Formation of PEEK skull repair parts (resistant to gamma ray sterilization cycle)
Surface CrN coating has passed ISO 10993 biocompatibility
Choosing our CNC machining services ensures not only precision and quality but a partnership built on trust and reliability. At Polestar Metal, we are committed to delivering excellence in every aluminum component we produce. From prototyping to full-scale production, we are equipped to meet your specific needs and bring your designs to life.
CNC Machining Tolerance:
| Precision Machining | Metals, PEEK, And ULTEM with Drawing | Other Plastics with Drawing | No Drawing |
| Linear Dimension | +/- 0.0025 mm +/- 0.0001 inch | +/- 0.05 mm
+/- 0.002 inch | ISO 2768 Medium |
| Hole Diameters (Not Reamed) | +/- 0.0025 mm
+/- 0.0001 inch | +/- 0.05 mm +/- 0.002 inch | ISO 2768 Medium |
| Shaft Diameters | +/- 0.0025 mm
+/- 0.0001 inch | +/- 0.05 mm
+/- 0.002 inch | ISO 2768 Medium |
