custom brass investment service
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what is brass investment casting
Brass investment casting is a specialized metal forming technique that uses a sacrificial wax pattern to create intricate brass components. The process derives its name from the way the wax pattern is “invested” or surrounded by a refractory material before the molten brass is poured into the resulting cavity.
Our brass investment casting Capabilities
| Capability Category | Specifications | Details |
|---|---|---|
| Size Range | Minimum Size | 0.1 lbs (45g) parts |
| Maximum Size | Up to 75 lbs (34 kg) single pieces | |
| Wall Thickness | Minimum 0.080″ (2mm) | |
| Dimensional Tolerances | Standard | ±0.010″ for first inch, ±0.003″ for each additional inch |
| Precision Grade | ±0.005″ for first inch, ±0.002″ for each additional inch | |
| Brass Alloys | C83600 (85-5-5-5) | Excellent corrosion resistance, plumbing fixtures, valve components |
| C84400 (Semi-Red Brass) | Good machinability, moderate strength, pressure-tight applications | |
| C85800 (Yellow Brass) | Excellent for decorative applications, good polishability | |
| C86300 (Manganese Bronze) | High strength, wear-resistant, suitable for bearings and bushings | |
| C95800 (Aluminum Bronze) | Superior corrosion resistance, high tensile strength, marine applications | |
| Surface Finish | As-Cast | 150-200 RMS |
| After Finishing | Down to 32 RMS (can be polished to high luster) | |
| Heat Treatment | Annealing | Stress relief and softening for improved machinability |
| Quenching | For certain alloys requiring specific hardness profiles | |
| Precipitation Hardening | For specialized high-strength applications | |
| Manufacturing Capacity | Annual Production | 300,000+ castings per year |
| Batch Sizes | 20 to 5,000+ units | |
| Lead Time | 5-7 weeks for new projects, 3-4 weeks for repeat orders | |
| Quality Assurance | Inspection Methods | CMM, X-ray, Ultrasonic Testing, Metallurgical Analysis |
| Documentation | First Article Inspection Reports, Material Certifications, SPC Data | |
| Testing | Tensile Testing, Hardness Testing, Chemical Analysis, Pressure Testing | |
| Certifications | Quality | ISO 9001:2015 |
| Industry Specific | AS9100D (Aerospace), IATF 16949 (Automotive) | |
| Environmental | ISO 14001 | |
| Secondary Operations | In-House | CNC Machining, Polishing, Heat Treatment, Assembly |
| Finishing Options | Polishing, Plating (Chrome, Nickel, Gold), Patination, Lacquering |
brass investment casting materials
| Alloy | Composition (%) | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) | Density (g/cm³) | Melting Range (°C) | Common Applications |
|---|---|---|---|---|---|---|---|
| Yellow Brass (C85800) | Cu: 57-61, Zn: 32-38, Pb: 0.8-1.5, Sn: 0.9-1.1 | 380-450 | 170-220 | 20-30 | 8.4 | 900-925 | Plumbing fixtures, decorative hardware, marine components |
| Red Brass (C83600) | Cu: 85-87, Zn: 4-6, Pb: 4-6, Sn: 4-6 | 240-310 | 110-130 | 20-25 | 8.7 | 850-950 | Plumbing valves, pumps, bushings, ornamental castings |
| Naval Brass (C46400) | Cu: 59-62, Zn: 37-40, Sn: 0.5-1.0 | 400-440 | 170-190 | 25-30 | 8.4 | 890-920 | Marine hardware, propeller components, valve stems |
| High Copper Brass (C22000) | Cu: 89-91, Zn: 9-11 | 350-380 | 150-170 | 45-55 | 8.8 | 930-960 | Electrical components, musical instruments, decorative items |
| Architectural Bronze (C38500) | Cu: 57-60, Zn: 35-39, Pb: 2-3, Sn: 0.3-0.7 | 380-400 | 160-180 | 15-25 | 8.4 | 880-900 | Architectural hardware, decorative fixtures, hinges |
| Leaded Brass (C36000) | Cu: 61-63, Zn: 35-37, Pb: 2-3 | 340-380 | 120-150 | 30-35 | 8.5 | 885-900 | Gears, locks, valve bodies, screw machine products |
| Manganese Bronze (C86500) | Cu: 58-63, Zn: 27-33, Fe: 1.0-3.5, Mn: 2.5-5.0 | 580-650 | 250-300 | 15-25 | 8.3 | 870-900 | Heavy-duty bearings, marine propellers, pump impellers |
| Aluminum Bronze (C95400) | Cu: 85-89, Al: 10-11.5, Fe: 1-2 | 550-650 | 250-300 | 12-18 | 7.7 | 1030-1060 | Bearings, gears, marine hardware, corrosion-resistant parts |
| Silicon Bronze (C87300) | Cu: 94-96, Si: 1.0-2.0, Mn: 0.2-0.4, Zn: 1.5-3.5 | 370-480 | 170-210 | 25-35 | 8.5 | 970-1040 | Marine hardware, artistic castings, electrical connectors |
| Nickel Silver (C79600) | Cu: 57-60, Zn: 20-22, Ni: 17-19 | 450-500 | 200-240 | 25-35 | 8.7 | 960-1040 | Jewelry, decorative items, silverware, musical instruments |
Custom brass investment casting Examples
