★ Capability 01 / 08

Investment
Casting in India.

Precision lost-wax casting from 10g to 50kg in stainless, carbon, and alloy steels. ±0.1mm tolerance, near-net shape, ISO 9001:2015 certified suppliers.

★ Lost-Wax Precision
±0.1mm
Tolerance
50kg
Max Wt
60+
Foundries
★ Process Overview

Why investment casting
changes the math.

Investment casting — also called lost-wax casting — is the process of choice when your part demands intricate geometry, tight tolerances, or premium surface finish that machining alone can’t deliver economically.

Magnus partners with 60+ ISO 9001:2015 certified Indian foundries. We’ve shipped over 8 million precision-cast components to OEMs in automotive, aerospace, medical, and industrial machinery — from 10-gram surgical parts to 50-kilogram pump bodies.

For complex shapes that would require multiple machining setups, investment casting delivers near-net-shape parts with 60-80% less machining.

At a Glance

Weight range10g – 50 kg
Tolerance±0.1mm / 25mm
Surface finish1.6 – 3.2 Ra
Lead time (samples)3-5 weeks
Magnus suppliers60+ foundries
★ Technical Specifications

Capability matrix.

ParameterSpecification
Casting weight10 grams to 50 kilograms
Dimensional tolerance±0.1mm per 25mm (ISO 8062 DCTG 5)
Surface finish1.6–3.2 μm Ra
Minimum wall1.5mm (down to 0.6mm for select alloys)
Annual capacity100 to 1,000,000+ units
Quality standardsISO 9001:2015, IATF 16949, AS 9100D, ISO 13485
TestingCMM, X-ray, dye penetrant, magnetic particle, ultrasonic, spectrometer
★ Applications

Where this
delivers value.

Automotive

Engine, transmission, suspension components for global Tier-1 OEMs.

  • Turbocharger housings
  • Differential gears
  • Rocker arms
  • Exhaust manifolds

Medical & Surgical

ISO 13485 medical-grade castings for instruments and implants.

  • Orthopaedic implant blanks
  • Surgical instrument bodies
  • Dental tool castings
  • Lab equipment fittings

Industrial Machinery

Pump bodies, valve components, precision sub-assemblies.

  • Pump impellers & housings
  • Valve bodies & seats
  • Hydraulic manifolds
  • Compressor parts

Aerospace

AS 9100D certified suppliers for non-critical aerospace.

  • Bracket assemblies
  • Cabin fittings
  • Engine accessories
  • Auxiliary parts

Energy & Power

Turbine, generator, oil & gas precision components.

  • Turbine blades (small)
  • Generator components
  • Oil & gas valve trims
  • Wind energy fittings

Food & Beverage

Food-grade stainless with sanitary surface finish.

  • Sanitary valve bodies
  • Pump components
  • Dairy equipment parts
  • Pharmaceutical fittings
★ Materials We Handle

From standard alloys
to specialty grades.

Stainless Steel

  • SS 304 / 304L
  • SS 316 / 316L
  • SS 410 / 420
  • SS 17-4 PH
  • Duplex 2205
  • Super Duplex 2507
  • CF8 / CF8M
  • CA40 / CA15

Carbon & Alloy Steel

  • AISI 1020 / 1045
  • AISI 4140 / 4340
  • AISI 8620
  • WCB / WCC
  • Tool Steel D2 / H13
  • Manganese Steel

Non-Ferrous Alloys

  • Aluminum A356 / A357
  • Brass C84400
  • Bronze C90300
  • Monel 400 / 500
  • Inconel 625 / 718
  • Hastelloy C-276

Medical & Specialty

  • Ti-6Al-4V (Grade 5)
  • ASTM F75 (CoCrMo)
  • SS 316LVM (medical)
  • Implant-grade alloys
  • FDA-compliant grades
  • NACE MR0175
★ Quality Assurance

Four-stage
quality protocol.

01

Pre-Production

Tooling FAI, pattern verification, ceramic shell process sign-off, material certification review.

02

In-Process

Real-time monitoring of pour temperature, cooling rates, dimensional checks at 25/50/75% milestones.

03

Pre-Shipment

AQL-based final inspection per ISO 2859-1, CMM dimensional, X-ray for critical parts, packaging verification.

04

Documentation

Complete pack: CoC, mill certificates, dimensional reports, NDT certificates, traceability records.

★ Frequently Asked

Questions,
answered.

What’s the difference between investment casting and sand casting?
Investment casting uses a one-time ceramic shell built around a wax pattern, producing parts with much tighter tolerances (±0.1mm vs ±1mm for sand) and smoother surface finish. More expensive per part but eliminates significant machining costs.
What are typical lead times from India?
Tooling 4-8 weeks. First samples in 3-5 weeks after tooling completion. Mass production: 1k-5k units in 4-6 weeks; 10k+ units in 6-10 weeks.
What minimum order quantity makes sense?
No hard MOQ on the foundry side — we’ve shipped 50-piece prototype runs. Economics work best above 200-500 pieces/year, as you amortise the one-time tooling cost ($1,500-$8,000 per cavity).
How does Magnus protect my IP and drawings?
Every drawing is NDA-protected from upload. Only assigned Magnus sourcing manager sees it. Suppliers sign Magnus NDAs before any drawing is shared. Tooling ownership is contractually yours.
Do you handle secondary machining and assembly?
Yes. Magnus offers turnkey: investment casting + CNC machining + heat treatment + surface treatment + sub-assembly + packaging — all coordinated through a single Magnus PO.
How do landed costs from India compare to China?
For most stainless investment castings, India is 8-15% cheaper on landed cost than China as of 2026. Magnus’s free landed-cost calculator gives precise quotes for your specs.
★ Ready to Source?

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