# Investment castings from India: process, clusters and QA > How investment castings are made in India and where: Rajkot, Coimbatore and Pune. Process chain, QA tests, HS heading and lead times, mapped by SourceSquid. Source: https://sourcesquid.co/india-atlas/products/investment-castings/ Product guide # Investment castings. How India makes them. Investment castings in carbon, alloy and stainless steel are best sourced from Rajkot, Coimbatore, Pune, Kolhapur, Belagavi and Hyderabad. Indian lost-wax foundries supply near-net-shape parts for pumps, valves, marine hardware, food machinery and vehicles, often machined and ready to fit. [Get a free teardown](https://sourcesquid.co/start/?product=investment-castings) [Open in the Explorer](https://sourcesquid.co/explorer/#product=investment-castings) 6 process steps 6 mapped clusters 7325 typical HS heading Where India makes it · **Investment castings** 6 clusters * __Clusters for this product * __Other clusters The manufacturing chain ## How it is made, in 6 steps. The sequence Indian factories follow, from raw material to an approved part ready to ship. 1. **Wax pattern injection** Aluminium die makes a wax replica of the part 2. **Ceramic shell building** Dipped and stuccoed in layers, then dried 3. **Dewax & pour**Shell fired, molten alloy poured at controlled temperature 4. **Knock-out & heat treatment**Normalising, hardening or solution annealing to spec 5. **CNC finishing** Critical faces and threads machined 6. **Inspection & PPAP**Chemistry, hardness, CMM report, first-article approval Key facts ## What buyers plan around. Typical HS heading 7325 (cast articles of iron or steel); parts often classify by function, e.g. 8481.90 [Check 7325 in the HS code finder](https://sourcesquid.co/tools/hs-code-finder/?q=7325) Lead time Samples 5–7 weeks including wax tooling, production 6–8 weeks India's edge India's lost-wax foundries combine modest tooling costs with in-house machining, which makes them a strong fit for low to medium volumes of complex steel parts. Materials * [Carbon and alloy steel](https://sourcesquid.co/india-atlas/materials/carbon-steel/) * [Stainless steel](https://sourcesquid.co/india-atlas/materials/stainless-steel/) Process families * [Casting & foundry](https://sourcesquid.co/india-atlas/processes/casting-and-foundry/) * [Machining & precision](https://sourcesquid.co/india-atlas/processes/machining-and-precision/) Where to source ## The clusters that make it. Listed in the order buyers usually start. Each page covers the nearest ports and neighbouring clusters. [ Gujarat Major cluster **Rajkot** Diesel engines, submersible pumps, bearings, aluminium castings, machine tools Casting & foundryMachining & precisionForging ](https://sourcesquid.co/india-atlas/clusters/rajkot/)[ Tamil Nadu Major cluster **Coimbatore** Pumps, motors, wet grinders, textile machinery, foundry Casting & foundryMachining & precision ](https://sourcesquid.co/india-atlas/clusters/coimbatore/)[ Maharashtra Major cluster **Pune – Chakan** Forgings, auto & EV, precision engineering ForgingAuto & EV componentsMachining & precision ](https://sourcesquid.co/india-atlas/clusters/pune/)[ Maharashtra Major cluster **Kolhapur** Foundry, Kolhapuri chappals, jaggery Casting & foundryLeather & footwearFood, spices & agri ](https://sourcesquid.co/india-atlas/clusters/kolhapur/)[ Karnataka Established cluster **Belagavi** Foundry, aerospace precision, hydraulics Casting & foundryMachining & precision ](https://sourcesquid.co/india-atlas/clusters/belagavi/)[ Telangana Major cluster **Hyderabad** Bulk drugs & vaccines, aerospace & defence parts, electronics Chemicals & pharmaElectronics & assemblyMachining & precision ](https://sourcesquid.co/india-atlas/clusters/hyderabad/) Quality ## Tests we plan for. The checks that usually sit in the inspection plan for this product. We agree the final list with you against your drawing and market. [How our inspections work](https://sourcesquid.co/quality/) * Spectro chemical analysis per heat * Hardness and tensile tests * Dye-penetrant or radiography on critical parts * CMM dimensional report * PMI on arrival for stainless grades Investment castings questions ## Straight answers. Anything else, ask us directly. A principal replies, not a bot. [anirudh@sourcesquid.co](mailto:anirudh@sourcesquid.co) ### What is the minimum order for investment castings in India? Many foundries accept 100–500 pieces per part, and some take smaller lots for high-value parts. Wax tooling costs far less than a die-casting die. ### Which alloys do Indian investment foundries cast? Common alloys include carbon steel (WCB), low-alloy steels, stainless 304 and 316 (CF8 and CF8M), duplex stainless and 17-4 PH. ### Who owns the wax die? The buyer usually pays for and owns the wax die. Confirm ownership, storage and return terms in writing. More product guides ## Related products. [6 steps**Pump and valve components** Coimbatore, Rajkot, Ahmedabad](https://sourcesquid.co/india-atlas/products/pump-valve-components/)[6 steps**Machined & welded assemblies**Pune, Bengaluru, Coimbatore](https://sourcesquid.co/india-atlas/products/machined-welded-assemblies/)[7 steps**Closed-die forgings and flanges** Pune, Ludhiana, Rajkot](https://sourcesquid.co/india-atlas/products/closed-die-forgings-flanges/) Start here ## Get a free teardown for your investment castings. Send one drawing, photo or quote. Within 48 hours we return how it is made, the best-fit Indian clusters and a realistic target price. [Get a free teardown](https://sourcesquid.co/start/?product=investment-castings)[Talk to a principal](https://sourcesquid.co/contact/)