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Metal
Machining

We offer custom-machined metal parts with short lead times and highly competitive pricing. A wide range of metals and surface finishing processes is available to meet your needs for high-quality prototypes and production parts.

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Bronze

Table of Contents

Definition

Bronze is an alloy mainly composed of copper and tin, sometimes mixed with aluminum, silicon, manganese, lead or phosphorus to form different bronze series. It is one of the earliest man-made metal alloys in human history.

Main Features

  • Excellent wear resistance and self-lubricating property, far better than steel or brass under friction.
  • High corrosion resistance against seawater, salt mist and most weak acids.
  • Good castability, easy to cast into complex bushings, gears and decorative parts.
  • Low magnetic permeability, non-magnetic material.
  • High thermal and electrical conductivity.
  • Good ductility, can be machined, stamped and polished smoothly.

Common Bronze Grades & Classifications

  1. Tin Bronze Classic Cu-Sn alloy, widely used for bearings, bushings, pump parts, valves, marine hardware.
  2. Aluminum Bronze High strength, superior seawater corrosion resistance, applied to marine propellers, ship fittings.
  3. Silicon Bronze Great weldability and anti-rust performance, for pipelines, structural fasteners.
  4. Phosphor Bronze High elasticity and fatigue resistance, ideal for springs, electrical connectors, precision shims.
  5. Lead Bronze Superior lubricity, used for heavy-load bearing sleeves.

Typical Surface Treatments

Polishing, passivation, oil impregnation for bearing parts, plating.

Main Industrial Applications

  • Mechanical industry: bearing sleeves, worm gears, sliding bushings, wear-resistant liners
  • Marine field: seawater valves, ship fittings, underwater structural components
  • Electronics: conductive springs, terminals, elastic connectors
  • Art & construction: statues, decorative architectural ornaments
  • Hydraulic & pump equipment: impellers, valve bodies
Parameter NameParameter value
Price$$$
Delivery time5days
Wall thickness0.5MM
tolerance±0.005 inch（±0.125mm）
Maximum part size200 x 80 x 100 cm
Available Bronze Grades:Tin Bronze

Frequently Asked Questions

  To shorten the delivery cycle of CNC workpieces, we start with the documents submitted by customers. Please provide complete and clear 2D drawings, 3D models, dimensional tolerances, surface requirements, and processing specifications, and specify special materials, surface treatments, and assembly standards. Avoid incomplete drawings, ambiguous markings, and version confusion.
Complete documents enable direct programming, order splitting, and production scheduling, cutting down repeated confirmation and supplementary work. Customers are also advised to finalize order quantity, delivery schedule, and special requirements in advance. Eliminating repeated communication and rework risks at the source accelerates the whole process and effectively shortens the overall lead time.

  With 12 years of expertise in CNC machining, YUEYI stands out from other manufacturers and middlemen. Our factory covers an area of 4,000 mu and is equipped with over 100 processing machines. We achieve a machining precision up to 0.001 mm, capable of producing high-precision components. Backed by standardized production management, our on-time delivery rate reaches 98%. As a direct manufacturer with full in-house production capacity, we control every production link without outsourcing. We deliver consistent quality, outstanding precision and reliable lead time, making us your trustworthy partner for CNC precision machining.

  Fast delivery is one of our key strengths. For 3D printing orders, we support delivery within 3 days, ideal for rapid prototyping and urgent sample requests. For regular CNC machining projects, the standard lead time is around 3 weeks.
We manage the whole process in-house, from drawing review and process planning to production, quality inspection, and shipment, with no intermediate links. Equipped with complete facilities and an experienced team, we reliably fulfill both urgent sample orders and mass production. We guarantee stable lead time and consistent quality to keep your projects on track.

  We offer a full range of surface treatments with rich color options. Our services include anodizing, powder coating, spray painting, electroplating, wire drawing, sandblasting, and polishing. Anodizing features various colors and strong anti-corrosion performance for aluminum parts. Powder coating and spray painting come with extensive color selections and durable coatings. Electroplating enhances luster and rust resistance. Wire drawing creates fine linear textures, while sandblasting delivers a matte finish. Polishing achieves a bright and smooth surface. All finishes can be customized in colors and styles to match your application needs.

  Yes, we fully provide complete material certificates and relevant test reports for all CNC-machined parts. All raw materials are sourced from qualified suppliers with authentic documentation. We can offer material certifications, dimension inspection reports, and quality test records upon request. Every product is strictly inspected before delivery. These official documents fully guarantee material compliance and product quality, supporting your quality audit and project requirements.

  We take strict quality control measures in advance to prevent non-conforming products. Every workpiece is fully inspected dimensionally and visually during and after production to ensure full compliance with design drawings and specifications.
In the rare case of non-compliant items, we will take immediate responsibility. We will promptly confirm the issues with you, then arrange free rework or remanufacturing as required. All related costs will be borne by us. We will also analyze the root cause to optimize our processes and avoid similar problems recurring. Our goal is to deliver qualified products steadily and safeguard your project progress.

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