Stainless steel, aluminum, carbon steel, and alloy investment casting from ISO 9001 certified lost-wax foundries in India, anchored in Rajkot with raw material and tooling sourced in-country.
Review core investment casting in india capabilities, materials, tolerances, inspection methods, and production requirements before requesting a quote.
See Our Process Or same-day technical feasibility review
Share your part details, drawings, or CAD files. Redstone will review the requirements and confirm feasibility, tolerances, materials, lead time, and next steps.
Final specifications are confirmed during the technical feasibility review.
Redstone helps hardware teams move from released drawings to repeat production with documented quality, competitive unit costs, and engineering support from the U.S.
Every investment casting in India runs to ISO 9001 with dimensional inspection, chemical analysis, hardness testing, and X-ray on critical parts. Each shipment carries the documentation a customer quality audit expects.
Investment casting carries higher tooling and labor cost than sand casting, but it eliminates secondary machining on complex parts and holds tight tolerances across ferrous and non-ferrous alloys. Rajkot's mature investment-casting cluster supplies raw material and tooling locally, which keeps that cost competitive. We quote on landed cost, with tooling, freight, and duties in the number before you see it.
Redstone is built for hardware OEMs moving small, complex metal components into production in India. Our foundries are comfortable at low or high volume, so the same lane works for a pilot run and a scaled program.
Redstone supports production metal parts across automotive, electronics, industrial equipment, and consumer hardware programs.
Gears, brackets, housings, and engine components investment cast in stainless and alloy steel and inspected to ISO 9001 for sustained automotive production.
Pump parts, valves, impellers, and connectors cast in steel and iron for durable, high-cycle industrial equipment.
Precision surgical tools, instrument bodies, and dental components cast to tight dimensional accuracy with smooth surface finish.
Small, intricate tool bodies and lock components cast in stainless steel or carbon steel with excellent surface finish and repeatable dimensions.
From initial drawings to final delivery, Redstone keeps each stage clear, documented, and aligned with production requirements.
Each handoff is documented. No stage moves forward until drawings, materials, and production requirements are confirmed with the customer.
Upload your 3D model or technical drawing. Our engineering team reviews every submission for manufacturability, evaluates alloy selection, and recommends the appropriate investment casting subtype before quoting.
A detailed quote covering tooling cost, material options, unit pricing by volume tier, lead time, and finish options. One U.S. point of contact, start to finish.
Wax patterns are produced using precision injection tooling or 3D printing, assembled on a tree, coated with ceramic slurry, and built up to the required shell thickness before the wax is melted out.
The preheated ceramic shell is filled with molten metal under controlled conditions. After solidification, the shell is broken away and parts are removed from the tree, with in-process checks throughout.
Each casting is cleaned, machined if required, and finished to spec, then inspected. We are the importer of record and coordinate freight to your dock with a Certificate of Conformance.
Redstone supports production investment casting programs for OEMs and engineering-led teams that require repeatable quality, controlled costs, and reliable part production.
Production components for automotive Tier 1 and Tier 2 suppliers and specialty OEM programs, run to IATF 16949 in certified facilities with U.S. engineering oversight from quote through delivery.
Cast, machined, and fabricated components for industrial equipment programs, run to ISO 9001 with U.S. engineering oversight from quote through delivery.
Precision-machined components for medical device and instrument programs, run to ISO 9001 in certified facilities with material traceability and U.S. engineering oversight from quote through delivery.
Production investment casting in india components for energy programs, run to documented quality with U.S. engineering oversight.
Production investment casting in india components for consumer hardware programs, run to documented quality with U.S. engineering oversight.
Production investment casting in india components for oil and gas programs, run to documented quality with U.S. engineering oversight.
Not sure if investment casting fits your part?
Additional manufacturing processes that can support die casting programs, secondary operations, and production-ready metal parts.
Aluminum and zinc die casting for high-volume, dimensionally precise components.
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3, 4, and 5-axis milling and turning from ISO 9001 and IATF 16949 certified facilities.
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Laser cutting, bending, stamping, and welding for precision sheet metal components.
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Aluminum, iron, steel, and brass castings from low-volume runs to large production batches.
View capabilityShare your part requirements and Redstone can help determine the right manufacturing path.
Share your drawings, CAD files, or production requirements. Redstone will review feasibility, materials, tolerances, lead time, and the best manufacturing path for your program.
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Don’t see your question? Request a quote and our engineering team will answer it.
Investment casting, also called lost-wax casting, starts with a wax pattern that matches the final part. The pattern is coated in ceramic slurry to build a shell, the wax is melted out, and molten metal is poured into the hollow mold. After solidification, the shell is broken away to release the cast part. The process produces intricate shapes, smooth surfaces, and tight tolerances that are difficult to achieve with other casting methods.
Our India foundries draw on the established investment-casting cluster around Rajkot for raw alloy and pattern tooling, which keeps tooling lead time and per-unit cost competitive. The best alloy and tooling approach is confirmed at the feasibility review.
We cast stainless steel, including austenitic stainless steel grades, alloy steel, carbon steel, aluminum, grey iron, ductile iron, and copper alloys. Stainless steel suits corrosion-resistant applications; aluminum suits lightweight, high-strength parts; carbon and alloy steels suit high-pressure or wear-resistant uses. Heat treating can be applied to reach target hardness and mechanical properties. Our engineering team confirms the best alloy at the feasibility review.
Among metal casting methods, investment casting gives the best surface finish and dimensional accuracy on small, complex parts, which reduces or removes secondary machining. Sand casting is cheaper for large parts, and die casting suits high-volume non-ferrous work. Investment casting wins where intricate geometry and tight tolerances matter most.
Every program includes dimensional inspection, chemical analysis, and hardness testing, with X-ray and magnetic particle nondestructive testing on critical castings. Production runs to ISO 9001, and each shipment carries a Certificate of Conformance for a customer quality audit.
Standard production lead time is 4 to 8 weeks from India, with tooling and first-article timing confirmed at the quote stage. Our foundries handle both low and high volume, and rush programs can be reviewed case by case.
Investment casting is most cost effective on recurring production where tooling cost amortizes across a run, but our India foundries are comfortable with both mid-run and high-volume programs. We will tell you at the quote stage whether your volume is a fit.
We are the importer of record and manage customs clearance from India, then coordinate freight to your dock with tracking. Duties and freight are quoted up front, so there is no surprise on the invoice.
Inconsistent wall thickness causes the majority of casting defects. Non-uniform walls lead to uneven fill and cooling, which produces porosity, sink marks, warpage, and crack propagation. Redstone reviews wall thickness during the DFM stage and runs mold-flow analysis to identify high-porosity areas before production begins.
Alloy composition is verified through spectrometer testing at the facility, independent lab analysis, and material certificates from the mill. For applications where composition is especially critical, destructive testing confirms the material meets print requirements.
Redstone contains the lot and quarantines nonconforming inventory, then performs a 100% sort and root cause analysis before any countermeasure. Options include rework, air-freighted replacements, or credit, and inspection gates are updated so the failure mode is caught earlier on the next run.
The production facility only sees that Redstone is making the parts, not the end use, the customer, or the industry. For sensitive projects, Redstone can split production across multiple facilities so no single facility receives the full drawing set.
