S136 Polished Injection Mold Cavity Insert

High-Precision Engineering

Monolithic integrated cavity design removes split assembly seams, preventing plastic flash and delivering uniform glossy molding finish across the entire product surface. Symmetrical locating steps and evenly distributed mounting holes enable repeatable, zero-shift installation into standard mold bases. Deep curved internal geometry accommodates complex shell-shaped plastic parts with multi-level structural features in a single forming block, simplifying overall mold structure and cutting assembly labor costs.

Anti-Corrosion S136 Stainless Steel Performance

Crafted from premium S136 stainless mold steel, this cavity insert delivers unmatched advantages for high-aesthetic molding:

• Outstanding resistance to rust and chemical erosion from corrosive plastic resins (PVC, flame-retardant PA)
• Exceptional polishability to mirror-grade surface for transparent, high-gloss consumer and medical plastic goods
• Balanced hardness and toughness to resist impact deformation from high injection pressure
• Stable dimensional precision without thermal expansion drift under sustained mold temperature cycles Perfect for molding scenarios prioritizing surface appearance, hygiene and long mold lifespan.

Fully Customizable Cavity Geometry

All structural parameters can be tailored to unique production requirements:

• Custom 3D cavity profiles based on client STEP/IGS CAD drawings or physical product samples
• Adjustable mounting hole layout, shoulder height and outer block dimensions
• Surface finish options: semi-ground, fine polish, optical mirror polish
• Single-cavity and multi-cavity nested block configurations available

Custom Engineering Support

• Full custom manufacturing from client design files or sample parts
• Material replacement options: SKD61 for high-temperature die casting, D2 for high-abrasive cold molding
• Thermal stress analysis and molding cycle efficiency consultation
• Rapid prototype sampling and large-scale mass production delivery schedules

Key Features & Advantages

1. Mirror-Gloss Molding Capability: S136’s ultra-high polish potential produces defect-free glossy/transparent plastic surfaces.
2. Anti-Corrosion Longevity: Stainless substrate avoids rust staining even with acidic plastic melt formulations.
3. Seamless Monolithic Build: No split joints eliminate flash and reduce post-mold trimming work.
4. Interchangeable Precision: Tight tolerance control allows direct swap into matching mold frames without re-alignment adjustments.

Technical Specifications

Applications

Aerospace Interior Components

Used for injection mold cavities of lightweight aerospace interior plastic trim, seat fitting covers and cabin accessory housings; S136 resists degradation from flame-retardant aviation-grade plastic resins while maintaining smooth, defect-free component surfaces for aircraft cabin interiors.

Optical Equipment

Ideal for precision molds of optical lens frames, camera housing shells and sighting instrument plastic components; mirror-polished cavity surfaces deliver scratch-free, high-clarity finished parts meeting strict optical assembly standards.

Household Appliance

Applied in molds for small home appliance outer casings, water pump plastic shells and kitchen utensil housings; anti-corrosion property withstands moisture and additive-filled appliance plastics, retaining long-term glossy product appearance.

Biodegradable Plastic Molding

Suitable for mold inserts processing PLA and PBAT biodegradable packaging/tableware; neutral chemical resistance prevents acidic biodegradable melt from corroding the cavity surface during extended production runs.

Watch & Luxury Accessories

Deployed for high-gloss watch case plastic blanks, decorative jewelry housing molds and premium gift packaging components; ultra-smooth polished cavities replicate luxury-grade glossy finishes for high-end consumer accessory lines.