C87300 Silicon Bronze Castings for Custom Engineering Components
Brass Copper Parts supplies C87300 Silicon Bronze Castings made to customer drawings for industrial hardware, brackets, housings and decorative components. Specify the casting geometry, service conditions and inspection requirements so that the alloy and manufacturing route can be reviewed together.
Indicative price: US$ 17.80/kg. Final quotation depends on casting weight, order quantity, tooling, machining and inspection requirements.
Material and Alloy Selection
C87300 is a copper-silicon casting alloy commonly described by its nominal 95% copper, 1% manganese and 4% silicon composition. Nominal composition is a guide to alloy selection; chemical acceptance must follow the agreed material specification and heat analysis. The grade combines castability with the appearance and corrosion resistance associated with silicon bronze.
C87300 International Equivalent Grades and Specifications
UNS C87300 / CDA 873 identifies the copper-silicon-manganese casting alloy often described as 95-1-4 silicon bronze. Use the full UNS designation and the agreed casting specification on international orders. A matching trade name alone does not establish equivalent material.
No exact EN, DIN, BS, JIS or GB substitute is verified here. Overseas silicon-bronze designations must be checked against C87300 chemistry and cast-condition properties before approval; a wrought silicon bronze is not automatically a casting-grade equivalent. Supply the original national standard, edition and grade for a documented comparison. Reference: CDA/UNS cast-alloy designations.
Types of C87300 Silicon Bronze Casting
Silicon Bronze C87300 Investment Casting
Investment casting forms a ceramic mold around an expendable pattern and can reproduce detailed C87300 hardware, decorative contours and compact engineering shapes. Position gates away from important visible surfaces where practical. Specify the required texture, polishing allowance and machined interfaces so sample approval covers both appearance and fit.
Silicon Bronze C87300 Green Sand Casting
Green sand casting uses a reusable pattern with a fresh compacted sand mold for each pour. It is a practical route to review for C87300 brackets, housings and larger decorative forms. Pattern draft, core location and section transitions influence the result. Mark mounting holes and mating faces that will be machined after casting.
Silicon Bronze C87300 Permanent Mold Casting
A reusable metal mold can be considered for repeated C87300 parts with geometry suitable for mold opening and ejection. Gravity filling, mold temperature and protective coatings are developed around the section thickness. Review tooling cost against annual demand and approve initial castings before fixing the production dimensional and surface requirements.
Silicon Bronze C87300 Shell Molding – Resin Sand Casting
Shell molding uses resin-coated sand on a heated pattern, while resin sand molding can form a thicker chemically bonded mold. Both require review of binder selection, venting and core support. For C87300 fittings and hardware, agree parting-line locations, gate-removal areas and machining stock, particularly where the finished component will be polished.
C87300 Silicon Bronze Die Casting
High-pressure die casting needs a separate feasibility review for C87300. The CDA casting guide lists several routes for this grade but does not list pressure die casting among its standard applicable processes. If a die-cast component is required, confirm alloy and tooling compatibility with the foundry. Any proposed change to a silicon-brass die-casting grade requires purchaser approval.
Process reference: CDA copper casting alloy guide. Availability, tolerances and testing are confirmed for the actual drawing and order quantity.
Casting and Machining Requirements
Sand casting suits components requiring flexible tooling and cored features. Investment casting can be considered for detailed shapes and features that would otherwise need extensive machining. Select the route after reviewing section thickness, casting size, production volume and surface requirements.
- Define datum surfaces, machined bores, threads and sealing faces on the drawing.
- Allow suitable draft, radii and machining stock; avoid abrupt transitions between thick and thin sections.
- Agree dimensional tolerances and surface finish for each critical feature before production.
- Specify whether parts are required as-cast, cleaned, machined or polished.
Applications and Inspection
Typical enquiry examples include mounting brackets, mechanical housings, architectural fittings and custom industrial cast hardware. Suitability for load-bearing, pressure-containing or marine service depends on the complete design and operating conditions.
Request heat traceability and chemical analysis with the quotation. Where the design requires mechanical testing, penetrant examination or dimensional reports, define the sampling plan and acceptance criteria in the purchase specification. An alloy designation alone does not establish a component pressure rating or certification.
Request a C87300 Casting Quotation
Send a drawing or 3D model, required quantity, target part weight, material specification, machining details and delivery destination to Brass Copper Parts. Tooling, lead time and inspection scope are confirmed with the quotation.
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Frequently Asked Questions
Is the price per casting or per kilogram?
The indicative price is US$ 17.80 per kilogram. The quotation defines the billable weight and any tooling, machining or inspection charges.
Can C87300 be substituted for another bronze grade?
Substitution requires review of chemistry, strength, corrosion exposure and the governing specification. Send the original grade and service requirements for assessment.
Alloy selection reference: Copper Development Association casting alloy guide.
Planning C87300 Hardware and Decorative Castings
A useful enquiry separates functional requirements from appearance requirements. For a bracket or housing, identify mounting faces, hole positions and the loads transferred through the component. For visible hardware, mark the surfaces that will be seen after assembly and describe the desired finish. This allows tooling, cleaning and machining requirements to be reviewed against the same drawing.
If the part replaces an existing component, include photographs of its installation and the mating parts. A worn sample can help explain the shape, but a dimensioned drawing should define the finished dimensions. Record the drawing revision so that sample approval and repeat orders refer to the same design.
Surface Finish and Sample Approval
Specify whether the finished casting will be used as supplied, machined, polished or given a decorative treatment. Show areas where casting witness marks are acceptable and areas where a smooth appearance matters. Use a reference sample or agreed finish description when appearance is a purchasing requirement.
For a first order, request a sample review stage before releasing the remaining quantity. Agree which dimensions, material records and visual features will be checked. Capture any approved changes on the drawing to make subsequent batches easier to order and inspect.
More Questions and Answers About C87300 Castings
What information helps you quote a C87300 bracket?
Send the drawing, mounting arrangement, quantity and material specification. Mark loaded sections, hole locations and finished faces, and include any required inspection records.
Can I enquire using a sample instead of a drawing?
Yes, send photographs and the dimensions you know to start a discussion. A sample may contain wear or distortion, so the final production geometry and tolerances need to be agreed before tooling.
How should I specify a polished appearance?
Identify visible faces and provide a reference finish or sample where possible. Include any coating or patina requirement so that finishing and dimensional allowances can be reviewed together.
What should be checked on the first sample?
Check fit with mating parts, critical dimensions, specified surface condition and the agreed material documentation. Record approval against a drawing revision.
Does the alloy name define every inspection requirement?
No. Include the material specification, required records and acceptance criteria in the enquiry. Tests and sampling should reflect the function of the finished component.
How can I make repeat orders easier?
Quote the previous order and approved drawing revision, then confirm quantity and delivery requirements. Highlight any changes to geometry, finish or inspection before placing the repeat order.
Request a Quote for C87300 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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