India's precision heat treatment authority

Where Steel
Meets
Precision.

Hardening, tempering, induction hardening, material testing, and custom inductor manufacturing — certified, repeatable, built for industries that cannot afford failure.

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ISO 9001NADCAPASME · ABSIATF 16949 — All active certifications
Trusted by India's industrial leaders
T
Tata Motors
B
BHEL
I
ISRO
L
Larsen & Toubro
M
Mahindra
A
Ashok Leyland
S
Siemens India
B
Bosch
R
Reliance
A
Adani Group
Services
Everything your
component demands.
From a single hardness test to a full batch production run — our capabilities span the complete metallurgical process. Explore each service below to see the process in detail.
Process video coming soon
01

Material Testing

Before any component is treated, we verify exactly what we're working with. Our lab runs full mechanical and chemical characterisation — tensile and impact testing, creep and fatigue analysis, optical emission spectrometry, and detailed microstructural examination under metallurgical microscopes. Every result is logged against the applicable standard, so you know precisely how your material will behave before it goes into service.

  • Hardness testingRockwell, Vickers, and Brinell across all common scales
  • Tensile & impactUTS, yield strength, elongation, Charpy V-notch
  • MetallographyGrain structure, inclusion rating, case depth verification
  • SpectrometryFull chemical composition analysis (OES)
HardnessTensileNDTMetallographySEM
Process video coming soon
02

Heat Treatment

Our furnace floor runs controlled-atmosphere processing across multiple furnace types, each fitted with real-time temperature and atmosphere monitoring so every cycle is repeatable and fully documented. Whether you need a single prototype run or a scheduled production batch, the thermal profile is built around your material and geometry — not a one-size-fits-all recipe.

  • Furnace typesBox, pit, continuous, and vacuum furnaces
  • Atmosphere controlEndothermic, nitrogen, and inert gas options
  • MonitoringMulti-point thermocouple logging on every load
  • QuenchingOil, polymer, and water quench media
FurnaceAtmosphereQuench
Process video coming soon
03

Hardening & Tempering

Hardening transforms the microstructure to martensite for maximum wear resistance, and tempering brings back the toughness needed so the part doesn't become brittle in service. We tune both stages together — the austenitising temperature, quench severity, and temper cycle — to hit the exact HRC range and mechanical properties your drawing calls for, on components ranging from small precision pins to heavy gear blanks.

  • Hardness rangeTypically 45–65 HRC depending on material and spec
  • Temper controlSingle or multi-stage tempering to reduce brittleness
  • ApplicationsShafts, gears, tooling, fasteners, wear plates
HRCWear Resistance
Process video coming soon
04

Induction Hardening

Induction hardening lets us harden exactly the surface that needs it — a bearing journal, a gear tooth, a shaft — while leaving the core tough and ductile. Because we design and build our own copper inductors in-house, we can match the coil geometry precisely to your part, controlling case depth to tight tolerances even on complex or asymmetric profiles. Cycle times are short, distortion is minimal, and every part is scanned to confirm case depth before it ships.

  • Case depth controlVerified by cross-section or scan on every batch
  • Custom inductorsDesigned and built in-house for your geometry
  • Cycle timeTypically seconds to a few minutes per part
Case DepthSelectiveRapid Cycle
Process video coming soon
05

Annealing

Annealing softens material, relieves internal stress, and restores ductility that's been lost through cold working or a prior heat treatment. It's often the step that makes the next stage of manufacturing possible — easier machining, cleaner forming, or simply a more stable structure before final hardening. We control heating rate, soak time, and cooling rate closely, since all three shape the final grain structure.

  • Full annealingMaximum softness and machinability
  • Process annealingPartial softening between forming operations
DuctilityRecrystallisation
Process video coming soon
06

Normalising

Normalising refines and homogenises grain structure by heating above the critical temperature and cooling in still air — refining coarse or uneven grain left behind by casting, forging, or welding. It's a common preparatory step before final hardening, since a uniform starting structure gives more predictable, consistent results downstream.

  • Cooling methodControlled still-air cooling for uniform grain refinement
  • Typical usePost-forging or post-casting structural correction
UniformityAir Cool
Process video coming soon
07

Stress Relieving

Welding, machining, and casting all leave residual stress locked inside a component — stress that can cause distortion or cracking later if it's never released. Stress relieving heats the part below the transformation temperature, holds it, then cools it slowly and evenly, letting internal stresses dissipate without changing the underlying hardness or microstructure.

  • Typical usePost-weld and post-machining distortion control
  • CoolingSlow, even furnace cooling to avoid re-introducing stress
Distortion ControlWeld Relief
Process video coming soon
08

Solution Annealing

Used primarily on stainless steels and superalloys, solution annealing dissolves precipitates back into the matrix at high temperature, then rapidly quenches the part to keep them in solution. This restores corrosion resistance that can otherwise be compromised by welding or prior thermal cycles — critical for components going into corrosive or high-purity service environments.

  • MaterialsAustenitic stainless steels, nickel-based superalloys
  • QuenchRapid quench to lock precipitates in solution
StainlessSuperalloy
Process video coming soon
09

Flame Hardening

For components too large or awkwardly shaped for a furnace or induction coil, flame hardening uses a precisely controlled oxy-gas flame to harden targeted surfaces — gear teeth, guide rails, large shafts — followed immediately by a quench spray. It's a flexible, portable process well suited to heavy engineering parts and low-to-medium volume work.

  • Best forLarge, heavy, or irregularly shaped components
  • MethodOxy-gas flame with immediate spray quench
Oxy-GasLarge Parts
Process video coming soon
10

Inductor Manufacturing

Every induction hardening job is only as good as the coil that shapes it. Our in-house design and fabrication team builds custom copper inductors — including flux concentrators for complex geometries — matched precisely to your part profile. This is what lets us hold tight case-depth tolerances on shapes that off-the-shelf coils simply can't handle.

  • MaterialsCopper tube and sheet, brazed to your specification
  • TurnaroundDesign and fabrication typically within 1–2 weeks
Copper CoilsCustom Design
Our process
From receipt to
certified dispatch.
A documented, repeatable five-stage workflow — every component leaves with full traceability.
01
Receive & Inspect
Parts logged, photographed, and dimensionally verified on arrival.
~1 hr
02
Engineering Review
Metallurgists define the thermal recipe and QA checkpoints.
2–3 hrs
03
Heat Treatment
Real-time temperature and atmosphere monitoring throughout.
6–10 hrs
04
Test & Validate
Hardness, NDT, and mechanical confirmation to spec.
3–4 hrs
05
Certify & Dispatch
QA report, CoC, and full traceability package issued.
1–2 hrs
Typical single-batch turnaround
0hrs
Standard components, single furnace cycle — start to certified dispatch. Larger batches or multi-cycle treatments run longer; express lanes available on request.
Capabilities behind the process
The scale that makes it possible.
0+
Heat Treatment Furnaces
Atmosphere, vacuum, salt bath & induction
0+
Components Annually
From prototypes to high-volume runs
0+
Years of Expertise
Deep metallurgical domain knowledge
0h
Express Turnaround
For urgent production requirements
Industries
Built for the industries
that build the world.
We process components that power vehicles, aircraft, power stations, and medical devices — where failure is not an option.
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Automotive
Gears, shafts, axles, and engine components hardened to OEM specifications. IATF 16949 ready.
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Aerospace
NADCAP-controlled processes for flight-critical components.
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Oil & Gas
Wear-resistant tooling and pressure vessel materials to ASME standards.
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Power & Energy
Turbine blades, generator shafts, and transmission components.
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Medical Devices
Precision thermal processing for surgical and implant-grade alloys.
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General Engineering
Dies, moulds, tooling, and heavy fabrications.
About us
Three decades of
metal, fire, and precision.
Met-Test Laboratories began as a two-furnace workshop and grew into a facility trusted by some of India's largest industrial names — without ever losing sight of the craft at its core.
Factory walkthrough — video coming soon
Est. 1998

From a two-furnace workshop
to a full metallurgical facility.

Met-Test Laboratories was founded on a simple conviction: that heat treatment is a craft as much as a process, and that the industries relying on it deserve a partner who treats every batch — whether one piece or ten thousand — with the same discipline. What began with two furnaces and a handful of skilled hands has grown, year over year, into a facility spanning multiple furnace lines, an in-house metallurgical lab, and a dedicated inductor manufacturing shop.

The equipment has changed. The standards we hold ourselves to haven't. Every certification on this site was earned the same way the business was built — one correctly treated batch at a time.

Factory floor, metallurgical lab, and inductor workshop — photos to be added
Leadership
The people behind the furnace.
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Ranjit Sinha
Founder & Chief Executive Officer

A short background on the founder — where their metallurgical or engineering career began, the experience that led them to start Met-Test Laboratories, and the philosophy that has guided the company since. Two to three sentences is usually enough to establish real credibility.

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Name
Head of Metallurgical Engineering

Background on this leader's technical qualifications, years of experience in heat treatment or materials science, and the part of the operation they oversee day to day.

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Name
Head of Quality & Compliance

Background on this leader's role in maintaining certifications, quality systems, and client-facing documentation — the person who keeps every batch audit-ready.

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Name
Head of Operations

Background on this leader's role overseeing daily plant operations, scheduling, and production throughput — the person who keeps every batch moving on time.

Ready to harden
your next batch?

Speak with a metallurgist today. We review your specs, material, and delivery timeline within one business day.

Contact Us
Response within 1 business day No minimum order Full QA documentation
Call the plant directly
+91 98253 21695
Mon–Sat, 9:00 AM – 6:30 PM IST
Email your specs
mettestlab@yahoo.com
For drawings, RFQs, and technical queries
Visit the facility
Plot No. C-1-10, G.I.D.C. Estate
V.U. Nagar, Anand, Gujarat — visits by appointment