C87800 Silicon Bronze Castings for Precision Hardware
Brass Copper Parts supplies custom C87800 Silicon Bronze Castings for brackets, clamps, levers, valve components and engineering hardware. This copper-zinc-silicon grade is associated with high fluidity and repeatable cast shapes. Send the application and production quantity so that tooling and casting method can be reviewed.
Indicative price: US$ 17.80/kg. Quotation is based on the approved drawing, casting process and finishing scope.
C87800 Alloy Chemistry
| Principal element | Mass percentage |
|---|---|
| Copper | 80.0% minimum |
| Zinc | 12.0–16.0% |
| Silicon | 3.8–4.2% |
| Lead | 0.09% maximum |
This table summarizes major elements; the full grade also limits other residual elements. Require compliance with the complete chemical specification and agreed heat-analysis documentation.
Match Properties to the Casting Process
CDA lists C87800 for pressure die casting under ASTM B176 and permanent-mold casting under ASTM B806. Its permanent-mold reference minima are 80 ksi tensile strength, 30 ksi yield strength at 0.5% extension and 15% elongation. Do not apply these values automatically to sand or investment cast parts.
For a different casting route, agree the material requirements, mechanical acceptance and test specimen arrangement before production. CDA C87800 alloy reference.
C87800 International Equivalent Grades and Specifications
UNS C87800 / CDA 878 is a die-casting silicon-brass designation. EN 1982 CuZn16Si4-C (CC761S), older German GK-CuZn15Si4 (2.0492.02) and Chinese ZCuZn16Si4 are related silicon-brass comparison grades for overseas enquiries.
They are not confirmed one-to-one equivalents of C87800. C87800 has a narrower silicon range and specific residual-element limits, so a broad CuZnSi description is insufficient. Compare the complete composition and process-specific acceptance requirements before approving an alternative. Sources: DIN/EN manufacturer alloy table, CuZn16Si4 datasheet and UNS grade tables.
Types of C87800 Silicon Bronze Casting
Silicon Bronze C87800 Investment Casting
Investment casting is an option to review when a C87800 component includes detailed contours or geometry that complicates die release. A ceramic shell is formed around an expendable pattern. Define the required casting condition and sample tests explicitly, since die-cast or permanent-mold property values cannot simply be assigned to investment-cast parts.
Silicon Bronze C87800 Green Sand Casting
Green sand casting can be evaluated for C87800 prototypes, larger shapes or components with cored passages. The pattern needs suitable draft, and the mold needs a feeding plan for thick bosses and junctions. Specify machining stock and surface requirements. Agree sand-cast acceptance values rather than transferring requirements from a different manufacturing route.
Silicon Bronze C87800 Permanent Mold Casting
Permanent mold casting is a relevant route for C87800 repeat hardware and fittings. Gravity-filled reusable tooling requires practical parting lines and controlled ejection. Discuss annual volume, mold maintenance and sample dimensions when developing the tool. State the applicable permanent-mold specification and the inspection needed on machined bores, threads and loaded transitions.
Silicon Bronze C87800 Shell Molding – Resin Sand Casting
Shell molding uses resin-coated sand with heated tooling; resin-bonded sand molds provide a separate option for larger or more heavily cored C87800 parts. Review core strength, gas escape and feeding before choosing either system. For clamps and brackets, mark loaded radii and machining datums so cleaning and finishing preserve the functional geometry.
C87800 Silicon Bronze Die Casting
C87800 is associated with pressure die casting, making this a key option for repeated copper-alloy hardware. The die design must accommodate filling, venting, release draft and trimming. Define allowed porosity and surface witness marks, especially near threads and sealing areas. The enquiry should include batch size and annual demand so tooling cost and inspection can be assessed.
Process reference: CDA casting alloy guide. All routes remain subject to drawing review and confirmation of foundry capability.
Component Design and Finishing
Brackets and clamps need adequate radii around loaded transitions, while valve and pump parts require defined sealing surfaces and inspection access. Identify which dimensions are as-cast and which must be machined. Tooling review should address parting lines, core extraction and the effects of machining on thin sections.
- Specify bore sizes, thread forms and functional datum surfaces.
- Provide the expected batch size and annual demand for tooling selection.
- Identify appearance surfaces and allowable casting witness marks.
- Define corrosion exposure, mating materials and any coating requirements.
Typical Enquiries
C87800 can be considered for industrial hardware, pump impellers, lever arms and marine fittings after design review. A proposed use should be assessed against fluid chemistry, load cycles and the required service life. Decorative appearance does not establish material equivalence or component certification.
Drawing Review, Inspection and Quotation
Send your drawing or 3D model, alloy specification, quantity, finished part weight and delivery destination to Brass Copper Parts. Mark critical bores, threads, sealing faces, datum locations and surface finishes. Tooling cost and lead time are confirmed after review.
Specify heat traceability, chemical analysis, dimensional reporting and any mechanical or non-destructive testing in the enquiry. Sampling and acceptance criteria should be agreed before production. Certification, pressure ratings and service suitability depend on the specified component and inspection plan.
Price and Ordering Questions
How is the price calculated?
The indicative price is US$ 17.80/kg. The quotation defines billable weight and any tooling, machining, testing, packaging or freight charges.
Can castings be supplied machined?
Request the required bores, threads and finished faces on your drawing. Machining allowance and tolerances are agreed for each feature and casting route.
Tooling and Volume Planning for C87800 Parts
For a repeated hardware component, provide the initial batch quantity and expected annual demand. Tooling decisions should be based on the complete part, including cores, finish and machining, rather than quantity alone. Identify whether the design is established or likely to change after a trial assembly.
Mark visible faces and functional features separately. A lever, clamp or bracket may need accurate mounting dimensions while allowing a different finish elsewhere. Clear priorities help the process review address parting-line location, finishing access and the dimensions that must be machined.
Matching Acceptance Criteria to the Production Route
Record the casting method and material requirements in the approved order. When comparing quotations, check that the proposed route, test condition and inspection scope are equivalent. Published properties for one casting process should not be assumed to apply to a different route.
A sample review can check assembly fit, appearance and the agreed critical dimensions before repeat production. Where tooling changes are approved, update the drawing revision and sample record together. Specify how parts and documentation should be identified to support consistent repeat orders.
More Questions and Answers About C87800 Castings
Why is annual demand useful when quoting C87800 parts?
It helps frame the tooling and production review. Include the first order quantity as well as likely repeat batches so the proposal can reflect the purchasing pattern.
Can the same mechanical values be used for every casting method?
No. Reference values depend on process and test condition. Agree the applicable material requirements and test arrangement for the proposed route.
What should I specify for a visible hardware surface?
Mark the appearance faces and describe the finish. Identify areas where parting lines or other casting witness marks are acceptable, preferably with an approved visual reference.
How should a clamp or lever be reviewed?
Show the loaded sections, pivot or mounting features, mating parts and required movement. Include the relevant loads and acceptance requirements with the drawing.
Can I change the design after sample review?
Submit the revised drawing for a review of tooling, cost and timing. Confirm the revision before further production so that the approved sample and order remain aligned.
How can I compare two casting quotations fairly?
Compare alloy specification, process, finished weight basis, machining, inspection, tooling and packing. Check which costs are one-time charges and which apply to each batch.
Request a Quote for C87800 Castings
Ready to discuss your component? Send your drawing or model, material specification, quantity, required finish and delivery destination to Brass Copper Parts. Include your target delivery date and inspection requirements so the quotation can define tooling, machining and testing scope.
Email Your Drawing for a Quote | Request a Casting Review | Call +91-22-43449300
Explore Related Silicon Bronze Products
Compare alloy options within our Silicon Bronze Casting and Foundry range.