From concept to product
From prototyping to production, our production sites can handle all your manufacturing projects.
Die Casting
At SOMI Custom Parts, we deliver precision die casting solutions specializing in aluminum and zinc alloys. Every part we produce is custom-tailored — no standard parts, only non-standard custom casting solutions. From automotive components to industrial valve bodies, our die casting capabilities bring your complex designs to life with dimensional accuracy and repeatability. Choose from two core die casting material categories. Each offers unique properties for different applications. We combine precision tooling expertise with advanced die casting technology to deliver non-standard custom parts you can trust. In-house mold design and fabrication using advanced CNC and EDM equipment for complex geometries and tight tolerances. Comprehensive experience with both aluminum and zinc alloys — selecting the optimal material for every casting application. Rigorous quality management system ensuring consistent part quality from first article to mass production. Soft tooling and rapid mold solutions delivering prototype castings in as fast as 2-3 weeks for design validation. In-house post-processing including deburring, machining, polishing, powder coating, plating, and surface treatment. From small batch prototypes to high-volume production runs — flexible quantities without compromising quality. A systematic approach ensuring quality and precision at every stage of production. Engineers design precision molds using CAD/CAM with simulation analysis for optimal fill and cooling. Alloy is melted to precise temperature and injected into steel dies under high pressure (100-200 MPa). Molten metal solidifies rapidly in the die cavity, forming the part with excellent dimensional accuracy. Flash removal, gate trimming, and preliminary surface finishing for clean, ready-to-use castings. Dimensional inspection using CMM, X-ray porosity analysis, and surface quality checks before shipment. Real-world applications across diverse industries — every component is a custom non-standard part manufactured to exact client specifications. High-strength aluminum die castings for engine brackets, transmission housings, and powertrain components requiring tight tolerances and pressure tightness. Intricate zinc alloy die castings for lock bodies, door handles, hinges, and architectural hardware requiring excellent surface finish and dimensional precision. Complex aluminum die cast pump casings, valve bodies, and hydraulic components with cast-in channels and pressure-tight integrity for demanding industrial applications. Aluminum die cast heat sinks, LED lamp housings, and electronic enclosures with optimized fin geometry for superior thermal dissipation and electromagnetic shielding. Understanding when die casting is the optimal choice for your custom metal parts. Send us your design files and get a free DFM analysis within 24 hours. Our engineering team will help you optimize your part for die casting manufacturability.
Precision Die Casting Services — Custom Metal Parts Cast to Your Exact Specifications
Explore Our Die Casting Capabilities
Why SOMI for Custom Die Casting
Precision Tooling
Dual Alloy Expertise
ISO 9001 Certified
Rapid Prototyping
Complete Finishing
No Minimum Order
Our Die Casting Process: From Mold Design to Finished Part
Mold Design
Melting & Injection
Casting & Cooling
Deburring & Trimming
Inspection & Delivery
Custom Die Cast Parts We've Manufactured for Our Clients
Automotive
Engine Mounts & Transmission Housings
Industrial Hardware
Lock Mechanisms & Decorative Hardware
Industrial Equipment
Pump Housings & Valve Bodies
Lighting & Electronics
LED Heatsinks & Enclosures
Die Casting vs. Other Metal Forming Processes
Factor
Die Casting
CNC Machining
Metal Stamping
3D Printing
Production Volume
Medium to High
Low to Medium
High
Low
Complex Geometries
Excellent
Good
Limited
Excellent
Dimensional Accuracy
±0.1–0.3mm
±0.01–0.05mm
±0.1–0.5mm
±0.1–0.5mm
Surface Finish
Excellent
Excellent
Good
Good
Wall Thickness
0.8–4mm
N/A (solid removal)
0.3–6mm
0.4–5mm
Best For
Complex parts, high volume, thin walls
Precision features, tight tolerances
Flat or formed sheet metal parts
Prototypes, complex internal structures
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Beyond die casting, SOMI offers a full suite of precision manufacturing services for your custom parts. Precision CNC milling, turning, and drilling for tight-tolerance metal and plastic parts with ±0.01mm accuracy. High-volume plastic parts with insert molding, overmolding, and liquid silicone rubber capabilities for complex geometries. Laser cutting, precision bending, and MIG/TIG welding for custom sheet metal enclosures, brackets, and assemblies. Additive manufacturing with SLA, SLS, FDM, SLM, and MJF technologies for rapid prototyping and end-use production. Contact our engineering team for a free consultation. We'll help you evaluate your design, recommend the optimal manufacturing process, and provide a competitive quote within 24 hours.
Frequently Asked Questions About Die Casting Services
What is the minimum order quantity for custom die casting? We have no strict MOQ for die casting. Small batch prototyping (100-500 pieces) is available using soft tooling, while high-volume production uses permanent steel dies. Our flexible approach accommodates everything from design validation samples to mass production runs.How much do die casting molds cost? Mold costs vary based on complexity, cavity count, and part size. Simple single-cavity aluminum molds start from $2,000-5,000, while complex multi-cavity production molds range from $8,000-25,000. The cost is amortized over production volume, making die casting highly economical for medium-to-large runs.Which material is better — aluminum or zinc alloy die casting? Aluminum (ADC12, A380) is ideal for lightweight, corrosion-resistant parts requiring thermal or electrical conductivity — commonly used in automotive, lighting, and electronics. Zinc alloys (Zamak 3, Zamak 5) offer superior strength, wear resistance, and finer detail reproduction, making them perfect for locks, handles, and precision mechanical components.What surface finishes can you apply to die cast parts? We offer comprehensive finishing options: as-cast, vibratory finishing, sandblasting, bead blasting, powder coating, liquid painting, chrome plating, nickel plating, zinc plating, anodizing, passivation, and E-coating. Our in-house finishing department ensures consistent quality across all surface treatments.What is the typical lead time for die casting projects? Prototype tooling: 2-3 weeks; production tooling: 4-8 weeks. Sample castings are typically available 2-3 weeks after tooling completion. Production lead times range from 3-5 weeks depending on volume and finishing requirements. Expedited options are available for urgent projects.
Explore Our Comprehensive Manufacturing Capabilities
CNC Machining
Injection Molding
Sheet Metal Fabrication
3D Printing
Not Sure If Die Casting Is Right for Your Part?
From concept to product
From prototyping to production, our production sites can handle all your manufacturing projects.
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