Corrosion-resistant solution for valves, automobiles, and other castings
Vimax Technocast is an ISO 9001:2015-certified stainless steel casting manufacturer in India. We pour with multiple grades of stainless steel to create valves, automobiles, pumps, and a range of other castings.
Businesses choose us because we lower total cost of ownership, insure their project against stockouts, and hold PED and AD Merkblatt certifications. They also benefit from the tight tolerances and superior surface finish we provide.
We export our investment steel castings to 12+ countries including the US, Canada, the UK, France, Germany, Spain, Italy, South Africa, Saudi Arabia, Japan, Australia and more.
Stainless Steel Grades We Pour With
Austenitic Stainless Steel
Non-magnetic or weakly magnetic steel that offers excellent corrosion resistance and good toughness at cryogenic temperatures.
| Cast Grade | Key Attributes | Suitable Application |
|---|---|---|
| CF8 | Cast equivalent of 304 SS. Excellent general corrosion resistance, good weldability. | Chemical processing valves, pumps, food/dairy processing, water treatment. |
| CF8M | Cast equivalent of 316 SS. Contains 2-3% Molybdenum for improved pitting/crevice corrosion resistance in chloride environments. | Marine equipment, chemical industry piping, acid handling, offshore applications. |
| CF3 | Low-carbon cast equivalent of 304L SS. Minimizes carbide precipitation during welding to prevent intergranular corrosion. | Welded pressure vessels, chemical tanks, cryogenic service. |
| CF3M | Low-carbon cast equivalent of 316L SS. High pitting resistance combined with immunity to intergranular corrosion after welding. | Marine valves, pharmaceutical equipment, high-corrosion welded assemblies. |
| CF8C | Niobium (Columbium) stabilized cast 304 SS. Resists intergranular corrosion at elevated temperatures. | Aircraft exhaust manifolds, high-temperature chemical piping, power plant parts. |
| CF10 | Slightly higher carbon content than CF8. Higher tensile strength with good corrosion resistance. | Moderate temperature corrosion service, industrial pumps and valves. |
| CH20 | Cast equivalent of 309 SS. High chromium (23%) and nickel (15%) content giving high temperature scale/oxidation resistance. | Furnace components, high-temperature petrochemical piping, heat treating fixtures. |
| CN7M | Cast equivalent of Alloy 20. Strong oxidation resistance. | Kiln components, furnace hardware, chemical process equipment. |
| CG8M | Alloy 20 cast equivalent. Contains high nickel and copper to resist sulfuric and phosphoric acids. | Acid pumps, fertilizer manufacturing, chemical pickling lines. |
| CG3M | Cast equivalent of 317 SS; higher molybdenum (3-4%) for severe chloride/pitting protection. | Bleach plants, pulp and paper processing, harsh chemical scrubbers. |
| CN3MN | Low-carbon version of CG8M. Superior pitting and intergranular corrosion resistance. | High-sulfur and high-chloride industrial fluids, paper mill digesters. |
| CK3MCuN | Cast 6% Moly Super Austenitic SS (AL-6XN equivalent). Extremely high PREN (Pitting Resistance Equivalent Number). | Desalination plants, offshore oil & gas, seawater pumps, harsh chemical lines. |
Duplex Stainless Steel
Dual-phase microstructure (austenitic and ferritic) that provides high strength and extreme stress-corrosion cracking resistance
| Cast Grade | Key Attributes | Suitable Application |
|---|---|---|
| CD4MCuN (1B) | Ferritic-austenitic duplex. Higher yield strength than standard austenitic SS, high erosion/abrasion and corrosion resistance. | Slurry pumps, phosphoric acid plants, reverse osmosis desalination, pulp processing. |
| CD3MN (4A) | 2205 Duplex cast equivalent. Excellent resistance to chloride stress corrosion cracking and pitting. | Oil & gas flowlines, offshore platforms, chemical tankers, pressure vessels. |
| CE3MN (5A) | Super duplex cast grade. Higher alloy content (25% Cr) for severe sour service and high mechanical loads. | Subsea manifolds, aggressive marine environments, high-pressure chemical pumps. |
| CD3MWCuN (6A) | Super duplex steel with added Tungsten and Copper. Maximum localized corrosion and erosion resistance. | Extreme sour gas service, marine propulsion, high-sulfate chemical process streams. |
Martensitic Steel
High-strength magnetic steel that responds well to heat treatment and displays excellent hardness and wear/impact resistance.
| Cast Grade | Key Attributes | Suitable Application |
|---|---|---|
| CA6NM | Low-carbon 13Cr-4Ni martensitic stainless. Good corrosion resistance with superior toughness and cavitation resistance. | Hydroelectric turbine blades/runners, high-pressure pumps, offshore compressor parts. |
| CA15 | Cast 410 SS. Magnetic, heat-treatable to high hardness and tensile strength. | Pump shafts, valve trim, steam turbine components, wear-resistant parts. |
| CA40 | High-carbon 420 SS cast equivalent. High hardness and wear resistance after heat treatment. | Chopper blades, high-wear valve internals, impellers. |
Heat Resistant Steel
Iron-chromium-nickel alloy designed to withstand oxidation, scaling, and deformation under very high temperatures.
| Cast Grade | Key Attributes | Suitable Application |
|---|---|---|
| A297 HF | 19% Cr - 9% Ni heat-resistant alloy with high oxidation resistance. | Furnace control valve bodies, turbocharger housings, exhaust manifold castings, gas diverters. |
| A297 HH | 25% Cr - 12% Ni; balanced austenitic/ferritic structure with high thermal strength. | Flue gas control valves, steam dump valves, heavy vehicles exhaust manifolds, tank turbine engine exhaust liners. |
| A297 HI | 28% Cr - 15% Ni. Higher chromium content provides increased hot gas corrosion/sulfur resistance. | Sulphuric acid gas valves, flair tip valves, naval vessel engine exhausts. |
| A297 HK | 25% Cr - 20% Ni—a standard high-creep strength alloy for service up to 1149°C. | Petrochemical cracker isolation valves, high-pressure reformer control valves, turbocharger turbine housings for diesel engines. |
| A297 HD | 28% Cr - 5% Ni. High-chromium alloy with excellent resistance to high-sulfur oxidizing atmospheres. | Smelter gas isolation dampers, rocket nozzle cowlings, ordnance destruction equipment. |
Precipitation Hardening Steel
High strength and good corrosion resistance that benefits from age hardening heat-treatment.
| Cast Grade | Key Attributes | Suitable Application |
|---|---|---|
| 17-4 PH | Contains ~17% Cr and 4% Cu. Offers high yield strength, excellent fatigue resistance, and good corrosion resistance. | Pump impellers, high-pressure valve bodies, actuator components, marine propeller shafts, aerospace structural fittings, and artillery hardware. |
| 15-5 PH | Designed with 15% Cr and 5% Cu. Provides superior transverse toughness, higher directional ductility, and higher fracture resistance than 17-4 PH. | Missile fins, rocket motors, high-pressure valve trims, and heavy-duty gear systems. |
| 13-8 Mo | Contains ~ 13% Cr, 8% Ni, 2% Mo, and trace aluminium. Provides exceptional strength and fracture toughness as well as high resistance to stress and corrosion. | Structural mounts for rockets, subsea oil and gas valves. |
We also pour with a range of cobalt- and nickel-based alloys, uncommon alloys, and exotic/proprietary alloys in line with ISO, EN, DIN, API, JIS, GOST and other standards.
Our Stainless-Steel Casting Process
At Vimax, we manufacture stainless steel castings tailored to customer requirements via an integrated process.
| Process Stage | Key Features |
|---|---|
| Tooling & Wax pattern | Meticulously crafted dies to produce accurate wax patterns at scale. |
| Investing & Heating | Evenly coating wax patterns to produce ceramic casts with even cavities, which are then heated to remove wax and water. |
| Pouring & Fettling | Carefully pouring molten alloy into the ceramic cavities to optimally manufacture castings, followed by knocking, gate removal, and grinding. |
| Heating & Machining | Placing cast parts in a pre-heated furnace to improve metallurgical properties, followed by CNC machining and surface treatment. |
| Final Inspection | Geometric, dimensional, visual, and chemical checks to rule out manufacturing defects and establish compliance with customer requirements. |
Technical Details
Weight range, tolerances, surface finish, and other details that provide greater insights into our stainless-steel casting offerings.
| Particulars | Details & Specifications |
|---|---|
| Shell building media | Ceramic, Stucco |
| Induction furnace | 250 Kwh |
| Crucible capacity | 100 kg, 300 kg |
| T-spout ladle capacity | 35 kg, 50 kg, 80 kg |
| Casting weight range | 0.04-150 kg |
| Max casting dimension | 900 x 900 x 450 mm |
| Tolerance range | DCTG 4-7, GCTG 3-6 |
| Surface roughness range | N9-N7 (Ra 6.3-1.6 μm) |
| Surface treatment | Anodizing, Electropolishing, Passivation, Powder Coating, Shot blasting |
| Industry standards | ASTM, BIS, DIN, EN, GOST, ISO, JIS |
Our Quality Assurance Mechanism for SS Castings
As a stainless-steel casting manufacturer in India, we deliver finished castings that meet design requirements, surface finish, and product-application fit. At Vimax, quality control is a part of the operation, and not an external exercise that’s carried out at discretion.
- Mill-test certificates: We only source from raw material suppliers who provide MTCs. This helps us lock down the quality of the material, ensuring consistency across batches.
- Heat numbers: Each furnace melt is given a unique code, and that code carries through later casting stages.
- Shell IDs: We assign batch IDs to each cast and the component produced from it. This ID too carries downstream.
- Part-level Identifiers: We assign order number, serial number, and part number to castings to make traceability easier.
- Stage-wise inspection: Instead of depending on just final inspection, we carry out checks at each stage of the casting process to rule out incompatibility.
- Data-driven manufacturing: By connecting shop floor operations to ERP, we ensure our on-floor team is up-to-date with technical and design changes. It also helps us connect disparate data points like heat numbers and part-level identifiers to enable broader traceability.
Why Vimax for Stainless-Steel Investment Castings
We have successfully delivered more than 10,000 orders across 3,000-plus products. We don’t just claim to be one of the best stainless steel casting manufacturers in India; we back it up with the following strengths.
Designing for manufacturability
Our team works with yours to reduce component weight and simplify design-oriented manufacturing complexities to enable production at scale.
Rapid prototyping
We use industry-vetted softwares and fast iteration cycles to narrow down on the right prototype in as little as two weeks, saving you time and enabling faster time to production.
CAD-to-part
We have the infrastructure, the knowledge, and the workforce required to turn your concept into a finished product.
Strong supplier network
We source raw materials from multiple suppliers and maintain an inventory buffer to insure against stockouts.
Modern infrastructure
We leverage rainfall sanders, multiple slurry drums, a large fluidized bed, multiple furnaces, and production lines to manufacture at scale. You benefit from a scalable manufacturing setup that can handle large orders with little turnaround time.
Best-in-class equipment
Our machining shop and lab are equipped with machines from Zeiss, FANUC, and Mitsubishi to ensure accuracy in secondary operations and testing.
Adherence to timelines
Whether it's just-in-time domestic deliveries or keeping up with production, we deliver on schedule.
Export capabilities
We are stainless steel casting exporters to OEMs and tier-1 suppliers in 12-plus countries. In us, you have a manufacturing partner that keenly understands the compliance requirements of multiple countries and works with an incoterm that suits you.
ESG awareness
Our association helps our clients lower their Scope 3 emissions and meet their ESG goals. We get up to 60% of our energy requirements from our 1.5 MW solar power plant, thereby helping us lower our carbon emissions.
Client Testimonials
“We previously had issues with dimensional tolerances for our selector levers and safeties. Vimax Technocast was able to meet our requirements, and so far, this association has been quite pleasant.”
Procurement Manager
Firearms OEM, USA
“ Vimax was able to deliver on our requirement for corrosion-resistant ball valves. We appreciate the work their team put in for DFM and the fact that they stuck to their delivery timelines. We look forward to working with them soon.”
Manager
Valve OEM, India
Whether you are sourcing a new component or evaluating an existing design, a technical consultation is the best place to start. Our engineers can help you determine the right stainless-steel grade, design approach, and production strategy.
Industries Catered
We manufacture stainless steel castings at scale for businesses in the following industries.
Valves
Bodies, bonnets, flanges, seatings, actuator parts, and other components for use in petroleum, oil & gas, chemical, pharmaceutical, and other areas.
Pumps
Stainless steel investment castings from bodies to impellers and volutes for reciprocating, rotary, centrifugal, axial-flow, and submersible pumps.
Automobiles
Engine blocks, cylinder heads, transmission components, and brake systems for regular and heavy-duty vehicles.
Aerospace & Defense
Canards, fins, electrical housings, selector levers, safeties, bodies, and other stainless-steel castings for missiles and firearms.
Food Processing
Food-safe FDA-compliant SS components such as actuators and agitators that resist corrosion, oxidation, and warping.
Human Implants
Bio-compatible orthopaedic implants that meet sterility requirements and minimize complications.
Fire Fighting
Valve bodies, flanges, nozzles, actuator components and more that meet safety and operational requirements.
General Engineering
A wide range of stainless-steel components and tools, from A-frames and brackets to spanners and wrenches.
Case Studies
Learn how our stainless-steel castings benefited our clients.
Automotive
An Indian tier-1 supplier wanted transmission components in bulk without loss in precision. We successfully delivered 2,500-plus components to their desired tolerances while meeting batch delivery schedules.
Food Processing
A Delhi-based large cloud kitchen wanted two different types of actuators. We helped them narrow down on the right grade of stainless steel and then cast the product to meet their exact requirements.
FAQs
As a stainless-steel casting manufacturer, do you produce custom designs?
Yes, we regularly produce custom stainless-steel castings for valves, automobiles, defense, and other industries. So far, we have produced custom components for valves, automobiles, and defense requirements. We can also etch or drill your brand on the component, on request.
Are secondary operations mandatory for stainless steel castings?
While we offer secondary operations as a stainless-steel casting manufacturer, it’s not always required in detail. Most components undergo only preliminary secondary operations to finish holes and improve surface finish.
Which stainless steel will be the right fit for my project?
Different stainless-steel grades offer different strengths. Some are better in terms of toughness while others offer better corrosion resistance. We help you select the stainless-steel grade that best meets your application requirements.
Does Vimax Technocast manufacture only stainless-steel investment castings?
In addition to stainless steel, we also manufacture investment castings with low-alloy steel, nickel-based alloys, cobalt-based alloys, aluminium alloys, tool steel, and carbon and alloy steels. We also pour exotic alloys, as specified by the client.
Share your drawings, material specifications, and compliance requirements. We’ll evaluate your application and provide a detailed quotation along with manufacturing recommendations.
