C87500 Silicon Bronze Castings for Pump, Valve and Industrial Parts
Brass Copper Parts supplies C87500 Silicon Bronze Castings to customer drawings, including fittings, impellers, levers and custom cast hardware. This copper-zinc-silicon alloy is an option for components that combine castability, corrosion resistance and mechanical strength. The production route is selected around the geometry and application.
Indicative price: US$ 17.80/kg. Supply is made to order following drawing and specification review.
C87500 Alloy Chemistry and Reference Properties
| Element | Composition by mass |
|---|---|
| Copper | 79.0% minimum |
| Zinc | 12.0–16.0% |
| Silicon | 3.0–5.0% |
| Lead | 0.09% maximum |
| Aluminum | 0.50% maximum |
The Copper Development Association lists sand-cast reference minima of 60 ksi tensile strength, 24 ksi yield strength at 0.5% extension and 16% elongation. Confirm the governing standard, test specimen and casting condition in the order. These values are reference data, not a guarantee for an unspecified finished part.
ASTM B584 addresses general-purpose sand castings; ASTM B763/B763M covers valve applications for listed grades. Verify the applicable edition and requirements. CDA C87500 alloy reference.
C87500 International Equivalent Grades and Specifications
UNS C87500 / CDA 875 is the primary material designation. For European enquiries, EN 1982 CuZn16Si4-C (CC761S) is a comparable silicon-brass casting grade. The associated older German designation GK-CuZn15Si4, 2.0492.02 appears in permanent-mold alloy data. Chinese ZCuZn16Si4 is another comparison grade.
These are comparison references, not automatic substitutes: copper, zinc and impurity limits can differ. Approve a full chemistry and mechanical-property comparison for the selected casting route before replacing C87500. Sources: manufacturer DIN/EN alloy table and CuZn16Si4 casting datasheet.
Types of C87500 Silicon Bronze Casting
Silicon Bronze C87500 Investment Casting
Investment casting can reproduce detailed C87500 impellers, levers and fittings using an expendable pattern and ceramic shell. The design review considers thin features, gate locations and access for shell removal. Identify passages requiring cleaning and faces needing machining; achievable wall thickness and finish are agreed for the actual component.
Silicon Bronze C87500 Green Sand Casting
Green sand molds offer a flexible route for C87500 valve bodies, housings and other cored shapes. Pattern layout and core support help establish passage alignment, while risers feed heavier sections during solidification. Specify minimum walls, flange allowances and testing requirements so casting and subsequent machining are planned together.
Silicon Bronze C87500 Permanent Mold Casting
Permanent mold casting fills a reusable metal tool, commonly under gravity. It can be assessed for repeat C87500 components whose shape permits release from the mold. Tool temperature, coating and filling sequence affect consistency. Compare tooling cost with production volume and agree dimensional inspection of first samples.
Silicon Bronze C87500 Shell Molding – Resin Sand Casting
Resin-coated shell molds can be considered for repeated C87500 fittings, while chemically bonded resin sand molds provide another option for larger or cored components. These processes need different pattern and mold arrangements. Review gas venting, core joints and sealing-face allowances before selecting the route and approving production samples.
C87500 Silicon Bronze Die Casting
Pressure die casting is a process option for C87500 silicon brass, subject to specialist copper-alloy equipment and part review. Injection into a reusable die can suit repeat production where tooling is justified. Discuss die life, draft, trimming and porosity acceptance. For fluid-handling parts, define leak testing and pressure requirements separately from general visual acceptance.
Process selection reference: CDA casting alloy guide. Request a quotation for the chosen process, drawing and inspection scope.
Manufacturing Considerations
Sand casting provides flexibility for cored housings and medium-to-large sections. For repeat components, review tooling life, parting lines and the location of machining stock. Thin ribs and heavy bosses should transition gradually to support consistent feeding and reduce local shrinkage risk.
- Define the required casting condition and any permitted weld repair procedure.
- Specify machined fits separately from general casting tolerances.
- Review sealing faces, fluid passages and pressure-testing requirements for pump and valve components.
- Choose cleaning, polishing or machining according to function and appearance.
Application Selection
C87500 enquiries can include pump fixtures, valve bodies, marine hardware and architectural fittings. Provide the fluid, operating temperature, loading and exposure conditions when requesting a suitability review. Alloy selection alone does not establish drinking-water approval or a pressure rating.
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.
Specifying C87500 Pump and Valve Components
For a fluid-handling component, the enquiry should describe both the metal part and its operating conditions. Identify the fluid, temperature, pressure and whether service is continuous or intermittent. Mark passages, sealing faces and connections clearly so the review can address machining access and inspection as well as the casting shape.
Separate functional tolerances from general dimensions. A sealing face, bearing location or threaded connection may need a different inspection method from an external casting surface. Stating these priorities helps focus the quotation on features that determine assembly and service performance.
Inspection Planning for Cored Castings
Show which internal passages must remain clear and identify any surfaces that need cleaning or examination. If leakage or pressure testing is required, provide the test method, medium, pressure, duration and acceptance criteria for review. Chemical analysis, dimensional checks and leak testing answer different questions and should be specified separately.
For repeat supply, define the records to accompany each batch and how parts should be identified. Include packing requirements for finished sealing faces and threads. This gives purchasing and receiving teams a clear basis for checking incoming components against the order.
More Questions and Answers About C87500 Castings
What operating information is needed for a valve-body enquiry?
Provide the fluid, operating pressure and temperature, connection details and material specification. Include the component drawing and any applicable testing requirements.
Does a C87500 material callout give the finished part a pressure rating?
No. A pressure rating depends on component design, service conditions and the applicable specification. State the required rating and verification method for review.
How do I specify internal passages?
Use sections or a 3D model to show passage geometry. Mark critical wall thicknesses, interfaces and access points, and identify any required internal cleaning or inspection.
Should leakage testing be included in the drawing package?
Include it in the drawing or purchase specification when required. Define the test conditions and acceptable result so the scope can be included in the quotation.
Can one drawing cover both cast and machined dimensions?
Yes, if the requirements are clearly distinguished. Identify finished dimensions, machining faces and general casting tolerances so stock allowances can be planned.
What should accompany a repeat order?
Reference the approved drawing revision and previous order, and confirm quantity, material documentation and test scope. Note any change in service conditions or packing needs.
Request a Quote for C87500 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
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