Gas Nitriding Job Work Service in Pune — Complete Guide for Manufacturers
Are you a manufacturer in Pune looking for a reliable gas nitriding job work service? Whether you’re based in Bhosari MIDC, Chakan, Talegaon, Ranjangaon, or anywhere in the PCMC industrial belt — finding the right gas nitriding provider can make or break the quality and cost-efficiency of your production line.
SR Thermal Solution (Nitride Technology) has been providing commercial gas nitriding heat treatment in Pune from our ISO-certified facility in Chikhali, Pimpri Chinchwad — serving 50+ manufacturers across Maharashtra and India. This guide covers everything you need to know about gas nitriding services in Pune — the process, materials, applications, pricing, and how to get started.
Already know what you need? Skip straight to the bottom and get a free quote from SR Thermal Solution.
New to heat treatment? Start with our earlier blog — What is Heat Treatment? A Complete Industrial Guide.
Gas Nitriding Job Work Service in Pune — Complete Guide for Manufacturers
Are you a manufacturer in Pune looking for a reliable gas nitriding job work service? Whether you’re based in Bhosari MIDC, Chakan, Talegaon, Ranjangaon, or anywhere in the PCMC industrial belt — finding the right gas nitriding provider can make or break the quality and cost-efficiency of your production line.
SR Thermal Solution (Nitride Technology) has been providing commercial gas nitriding heat treatment in Pune from our ISO-certified facility in Chikhali, Pimpri Chinchwad — serving 50+ manufacturers across Maharashtra and India. This guide covers everything you need to know about gas nitriding services in Pune — the process, materials, applications, pricing, and how to get started.
Already know what you need? Skip straight to the bottom and get a free quote from SR Thermal Solution.
New to heat treatment? Start with our earlier blog — What is Heat Treatment? A Complete Industrial Guide.
What Is Gas Nitriding Job Work Service?
Gas nitriding job work service is a contract heat treatment process where manufacturers send their steel components to a specialist facility for surface hardening using nitrogen diffusion. The gas nitriding process is carried out at 495–565°C using ammonia gas, creating an extremely hard nitrided case on the component surface — improving wear resistance, fatigue strength, and corrosion resistance without any quenching or dimensional distortion. Companies outsource gas nitriding job work because it eliminates the need to invest in expensive furnace equipment, skilled operators, and process gas infrastructure.
In Pune’s industrial ecosystem — home to hundreds of automotive OEMs, tier-1 suppliers, tool rooms, and heavy engineering companies — nitriding job work Pune is in high demand. Manufacturers in Bhosari, Chakan, Talegaon, Ranjangaon, and Hinjewadi regularly outsource gas nitriding because maintaining an in-house nitriding furnace is expensive and complex.
That’s where SR Thermal Solution comes in. We provide gas nitriding services in PCMC from our dedicated facility in Chikhali — just 15 minutes from Bhosari MIDC and 25 minutes from Chakan industrial area.
How Does the Gas Nitriding Process Work?
The gas nitriding process involves placing steel components inside a sealed furnace and exposing them to ammonia gas (NH₃) at temperatures between 495°C and 565°C. The ammonia dissociates into nitrogen and hydrogen. Nitrogen atoms diffuse into the steel surface over 15 to 100+ hours, forming hard iron nitrides that create a wear-resistant case typically 0.1 to 0.8 mm deep. No quenching is required, which means zero distortion on finished components.
Step-by-Step: What Happens to Your Components at Our Pune Facility
Step 1 — You Send Components:
Ship or deliver your components to our Chikhali, Pune facility. We inspect for cleanliness, surface condition, and material grade verification through hardness testing.
Step 2 — Furnace Loading:
Components are carefully loaded into our horizontal gas nitriding furnace (1,200 kg batch capacity). We arrange parts to ensure uniform ammonia gas flow around every surface.
Step 3 — Purging & Heating:
The furnace is sealed and purged with nitrogen to remove all oxygen. Temperature is gradually raised to the nitriding temperature — typically 500–560°C depending on your material and hardness specification.
Step 4 — Ammonia Gas Introduction:
Controlled ammonia gas (NH₃) flow begins. On contact with the hot steel surface, ammonia dissociates — releasing nitrogen atoms that begin diffusing into your component’s surface layer.
Step 5 — Nitriding Hold (Main Cycle):
Your components are held at temperature for the required duration — 15 to 100+ hours depending on the case depth you need. Our PID controllers maintain temperature within ±1°C. Ammonia flow is monitored continuously using precision mass flow controllers.
Step 6 — Controlled Cooling:
After the cycle completes, the furnace cools gradually under protective atmosphere. No quenching is performed — this is why gas nitriding produces absolutely zero distortion. Your finished-machined components come out the same dimensions they went in.
Step 7 — Quality Testing & Dispatch:
We perform Vickers/Rockwell hardness testing, case depth measurement, and visual inspection. Your components are packed with a complete quality report and dispatched. Most standard jobs are completed within 3–7 working days.
The entire gas nitriding process from component receipt to dispatch at our Pune facility typically takes 3–7 working days. Express 24–48 hour service is available for urgent requirements.
Why Is Pune the Hub for Gas Nitriding Job Work in India?
Pune is India’s second-largest hub for automotive and engineering manufacturing after Chennai. The city hosts major OEMs like Tata Motors, Bajaj Auto, Mercedes-Benz, Volkswagen, and hundreds of tier-1 and tier-2 suppliers in the PCMC, Chakan, Talegaon, and Ranjangaon industrial belts. This concentration of precision manufacturing creates massive demand for heat treatment services — particularly gas nitriding job work.
Pune’s Industrial Areas We Serve
SR Thermal Solution’s Chikhali facility is centrally located to serve all major Pune industrial areas:
- Bhosari MIDC — 15 minutes from our facility. Home to dozens of automotive component manufacturers who regularly need nitriding for gears, shafts, and dies.
- Chakan Industrial Area — 25 minutes away. Major automotive OEM hub with Volkswagen, Mercedes-Benz, Mahindra, Hyundai suppliers.
- Talegaon MIDC — 35 minutes away. Growing industrial zone with General Motors, Force Motors, and tier-1 suppliers.
- Ranjangaon MIDC — 40 minutes away. Home to Fiat, Whirlpool, and heavy engineering companies.
- Hinjewadi IT Park area — 30 minutes away. Precision tool rooms and aerospace component suppliers.
- Pimpri Chinchwad (PCMC) — We ARE in PCMC. The heart of Pune’s industrial activity.
- Kudalwadi / Chikhali — Our home base. Walking distance from multiple engineering companies.
We also regularly process components shipped from Mumbai, Nashik, Aurangabad, Kolhapur, Satara, Ahmednagar, and other Maharashtra cities. Nationwide shipping from Gujarat, Karnataka, Tamil Nadu, and other states is common.
What Components Can Be Gas Nitrided at Our Pune Facility?
Gas nitriding is best suited for alloy steel, tool steel, stainless steel, and cast iron components that require high surface hardness without dimensional change. The most commonly nitrided components at our Pune facility include crankshafts, camshafts, gears, injection moulds, extrusion dies, spindles, piston rings, and hydraulic parts.
Gas Nitriding for Crankshaft and Automotive Parts — Pune
Gas nitriding for crankshaft is the most common request we receive from Pune’s automotive manufacturers. Crankshafts operate under extreme cyclic loading — gas nitriding increases fatigue life by up to 50% while providing wear resistance on journal surfaces.
Automotive components we regularly gas nitride at our Pune facility:
- Crankshafts and camshafts
- Gears, gear shafts, and splines
- Valve components and valve seats
- Piston rings and cylinder liners
- Brake rotors (via FNC process)
- Transmission parts and synchromesh rings
- Cam followers and rocker arms
We serve automotive OEMs and tier-1 suppliers including Mahindra CIE Automotive (Rajkot, Pune), Ramkrishna Forgings (Jamshedpur), Dana Anand India, and multiple Pune-based auto component manufacturers.
Gas Nitriding for Tool & Die Components — Pune
Pune has one of India’s densest concentrations of tool rooms and die makers. Gas nitriding extends die life by 3–5x, drastically reducing replacement costs. We regularly process:
- Injection moulds (H13, P20)
- Die casting dies and core pins
- Forging dies
- Aluminium extrusion dies
- Press tools and stamping dies
- Extruder screws and barrels
- Sprue bushes and punches
Gas Nitriding for Industrial & Heavy Engineering — Pune
- Hydraulic cylinder rods and piston rods
- Machine tool spindles and ball screws
- Textile machinery spindles and rollers
- Pump shafts and impellers
- Crusher parts and mining equipment
- Precision lead screws and guide rails
Steel Grades We Commonly Nitride in Pune
Not all steels respond equally to gas nitriding. The best results come from steels containing nitride-forming elements — chromium, molybdenum, vanadium, and aluminium.
Steel grades our Pune clients most commonly send for gas nitriding:
- EN41B (Nitralloy — purpose-built for nitriding)
- 41Cr4 / 42CrMo4 (commonly used for crankshafts)
- 31CrMoV9 (premium nitriding steel)
- EN19 / AISI 4140 (gears, shafts)
- EN24 / AISI 4340 (heavy-duty shafts)
- H13 (hot work tool steel — dies, moulds)
- D2 (cold work tool steel)
- P20 (mould steel)
- EN36 (case hardening steel)
- Stainless steels — 17-4 PH, 420, 440C
Not sure if your material is suitable? Send your steel grade and drawing to srthermal.solution@gmail.com — we’ll advise you for free.
Gas Nitriding Cost Per Kg in India — Pune Pricing Guide
Gas nitriding cost in India typically ranges from ₹25 to ₹60 per kg, depending on the material grade, required case depth, batch size, and furnace cycle time. At SR Thermal Solution in Pune, we offer competitive pricing with no hidden charges, full quality documentation, and fast turnaround.
What Affects Gas Nitriding Job Work Pricing?
1. Case Depth Requirement — This is the biggest cost factor. Shallow case (0.1–0.2 mm) requires 15–24 hours. Deep case (0.6–0.8 mm) requires 80–120 hours. Longer cycle = more energy = higher cost.
2. Material Grade — Nitralloy and chrome-moly steels nitride efficiently. Stainless steels or unusual alloys may need modified cycles at higher cost.
3. Batch Size — The furnace runs whether you send 100 kg or 1,200 kg. Bigger batch = lower cost per kg because energy cost is spread across more components.
4. Component Geometry — Simple shafts and pins are easy to load. Complex shapes or parts needing masking (selective nitriding) require extra handling.
5. Testing Requirements — Standard hardness testing is included. Metallographic cross-section analysis or micro-hardness traverse adds a small additional cost.
Approximate Gas Nitriding Rates — Pune
| Case Depth | Cycle Time | Approx. Cost/kg |
|---|---|---|
| 0.1–0.2 mm | 15–24 hours | ₹25–35/kg |
| 0.2–0.4 mm | 24–48 hours | ₹35–45/kg |
| 0.4–0.6 mm | 48–80 hours | ₹40–50/kg |
| 0.6–0.8 mm | 80–120 hours | ₹50–60/kg |
Actual pricing depends on your specific material, batch size, and specifications. Contact SR Thermal Solution for an exact quotation. We respond within 4 hours on working days.
FNC Nitrocarburizing Service in Pune — When You Need More Than Nitriding
FNC (Ferritic Nitro Carburizing) is a modified nitriding process that diffuses both nitrogen and carbon into the steel surface at approximately 570°C. FNC creates a compound layer with superior wear and corrosion resistance, and is widely used in Pune’s automotive industry as a cost-effective replacement for chrome plating.
FNC nitrocarburizing service Pune is our second most requested process after gas nitriding. Here’s when to choose FNC:
Choose FNC When:
- You need corrosion resistance as the primary goal
- Your components are low-carbon or plain carbon steel (which don’t respond well to gas nitriding)
- You need a cost-effective replacement for chrome plating
- You’re processing brake rotors, hydraulic parts, valve bodies, or fasteners
Choose Gas Nitriding When:
- You need deep diffusion zone (0.3–0.8 mm) for fatigue improvement
- Your components are alloy steel or tool steel with nitride-forming elements
- You need the highest surface hardness (gas nitriding: up to 1100 HV vs FNC: 600–800 HV)
- You’re processing crankshafts, gears, moulds, or dies
We Also Offer ONC (Oxy Nitro Carburizing) in Pune
ONC adds a controlled oxidation step after FNC, creating a dense black oxide layer. This gives components both corrosion protection AND an aesthetic black finish — perfect for hand tools, hydraulic parts, and automotive fasteners where appearance matters.
SR Thermal Solution offers Gas Nitriding, FNC, and ONC — all three processes from one facility in Pune. Our team recommends the right process based on your component’s material, application, and specifications. View all our heat treatment services.
Gas Nitriding vs Other Heat Treatment Processes — A Pune Manufacturer’s Guide
Pune manufacturers often ask us: “Should I go for gas nitriding or carburizing?” or “What about induction hardening?” Here’s how gas nitriding compares:
Gas Nitriding vs Carburizing
| Factor | Gas Nitriding | Carburizing |
|---|---|---|
| Temperature | 495–565°C | 850–950°C |
| Distortion | Zero (no quench) | Significant (quench required) |
| Case Depth | 0.1–0.8 mm | 0.3–3.0 mm |
| Post-grinding | Not needed | Usually needed |
| Surface Hardness | 700–1100 HV | 58–62 HRC |
| Best For | Finished precision parts | Gears needing deep case |
| Cost Comparison | Moderate per kg, but no grinding cost | Lower per kg, but add grinding cost |
Bottom line for Pune manufacturers: If your component is already finished-machined to final dimensions, gas nitriding is the clear winner — zero distortion means no rework. If you need 1–3 mm case depth on rough-machined gears, carburizing is better.
Gas Nitriding vs Induction Hardening
| Factor | Gas Nitriding | Induction Hardening |
|---|---|---|
| Process Time | 15–100+ hours | Minutes |
| Coverage | All surfaces (gas reaches everywhere) | Only targeted areas (coil must access surface) |
| Distortion | Zero | Some |
| Internal surfaces | Yes — inside bores, holes, threads | No |
| Best For | Complex shapes, batch processing | Localised hardening of shafts/pins |
Gas Nitriding vs Plasma (Ion) Nitriding
| Factor | Gas Nitriding | Plasma Nitriding |
|---|---|---|
| Batch Size | Up to 1,200 kg at our Pune facility | Typically smaller batches |
| Uniformity | Excellent on all shapes | Can have hollow cathode issues |
| Cost | Lower for large production batches | Higher per kg |
| Selective Nitriding | Masking with paint/copper plating | Easy with mechanical shields |
| Availability in Pune | SR Thermal + others | Very few providers |
Our recommendation for most Pune manufacturers: Gas nitriding gives the best combination of quality, capacity, and cost for production volumes. Plasma nitriding is better suited for small, high-precision aerospace batches.
Want a deeper comparison? Read our blog — Types of Heat Treatment Services in India — Which Process Does Your Component Need?
Why Choose SR Thermal Solution for Gas Nitriding Job Work in Pune?
Pune has several nitriding job work providers. Here’s why 50+ manufacturers choose SR Thermal Solution:
[H3] Our Gas Nitriding Capabilities — Pune Facility
- Furnace: Horizontal gas nitriding furnace — 1,200 kg batch capacity (one of the largest in Western India)
- Temperature Range: 400–600°C with ±1°C PID control accuracy
- Atmosphere Control: Precision ammonia mass flow controllers for consistent nitriding potential (KN)
- Component Size: 10 grams to 500+ kg individual pieces
- Pit Furnace: Available for long shaft-type components up to 2 metres
- Processes: Gas Nitriding, FNC (Ferritic Nitro Carburizing), ONC (Oxy Nitro Carburizing) — all from one facility
Quality & Certifications
- ISO 9001:2015 certified quality management system
- ZED certified (Zero Defect Zero Effect)
- In-house Rockwell, Vickers, and Brinell hardness testing
- Metallographic cross-section analysis on request
- Full process documentation — temperature charts, time logs, ammonia flow records, hardness reports
- 100% traceability from component receipt to dispatch
We Build Our Own Furnaces — This Is Our Advantage
This is what separates SR Thermal from every other gas nitriding service in Pune. Our furnace manufacturing division designs and builds the same gas nitriding furnaces we operate. This means:
- We understand the equipment at a fundamental engineering level
- Our furnaces are maintained to the highest standards — because we built them
- We can troubleshoot and optimise process parameters that other providers can’t
- We control quality from furnace design → component treatment → final testing
No other gas nitriding service provider in Pune manufactures their own furnaces. This is our unique advantage.
Clients Who Trust Us
We provide nitriding heat treatment Pune Maharashtra services to:
- Mahindra CIE Automotive Ltd. (Rajkot, Pune)
- Ramkrishna Forgings Ltd. (Jamshedpur)
- Dana Anand India Pvt. Ltd.
- Multiple tier-1 automotive suppliers across Pune and Maharashtra
- Tool rooms and die makers in Bhosari, Chakan, Talegaon
- Hydraulic equipment manufacturers in Pune and Kolhapur
- Textile machinery manufacturers in Maharashtra
How to Send Components for Gas Nitriding Job Work in Pune
Step 1 — Contact Us with Your Requirements
Call +91 8378848736 or email srthermal.solution@gmail.com with:
- Component name and drawing (if available)
- Material grade (e.g. EN19, H13, 42CrMo4)
- Required surface hardness (HV or HRC)
- Required case depth (mm)
- Quantity and approximate weight per piece
- Any areas to be masked (protected from nitriding)
Or simply WhatsApp us photos of your components at +91 8378848736 — we’ll respond within 4 hours. Step 2 — We Provide a Technical Quote
Our engineering team reviews your specifications and provides:
- Recommended process (Gas Nitriding, FNC, or ONC)
- Per-kg or per-batch pricing
- Expected turnaround time
- Pre-treatment requirements (if any)
Step 3 — Deliver or Ship Components
If you’re in Pune/PCMC:
Drop off directly at our facility. Many Bhosari, Chakan, and Kudalwadi clients do same-day drop-off and pickup.
If you’re outside Pune:
Ship via any transport or courier. We accept shipments from across India.
Our facility address:
SR Thermal Solution (Nitride Technology)
Gat No-1544, Sonawane Wasti Road,
Near Vikas Anath Ashram, Chikhali,
Pune – 411062, Maharashtra, India
Landmarks: Near Chikhali-Kudalwadi area, PCMC zone, 15 min from Bhosari MIDC, 25 min from Chakan.
Step 4 — We Process, Test & Return
Your components are gas nitrided, tested, and dispatched within 3–7 working days with a full quality report including:
- Process parameters (temperature, time, atmosphere)
- Hardness test results (Vickers/Rockwell/Brinell)
- Case depth measurement
- Process completion certificate
Express service (24–48 hours) available for urgent orders.
What is gas nitriding job work service?
Gas nitriding job work service is a contract heat treatment process where you send your steel components to a specialist facility like SR Thermal Solution in Pune. We surface-harden them using nitrogen diffusion at 495–565°C and return them with improved hardness, wear resistance, and fatigue life — without any dimensional distortion. It’s the preferred choice for finished, precision-machined components.
How much does gas nitriding cost per kg in India?
Gas nitriding typically costs ₹25–60 per kg in India. The exact price depends on case depth (deeper = longer cycle = higher cost), material grade, batch size, and testing requirements. At SR Thermal Solution Pune, we offer competitive pricing with no hidden charges. Send your requirements for a specific quote.
Which gas nitriding service provider is best in Pune?
SR Thermal Solution (Nitride Technology) is one of Pune’s leading gas nitriding job work providers, operating from Chikhali in the PCMC industrial belt. What makes us unique is that we manufacture our own gas nitriding furnaces — giving us unmatched process expertise. We’re ISO 9001:2015 certified, have a 1,200 kg batch capacity furnace, and serve 50+ clients including major automotive OEMs.
How long does gas nitriding take?
The furnace cycle ranges from 15 hours (shallow case) to 100+ hours (deep case). Total turnaround at SR Thermal Solution is typically 3–7 working days. Express 24–48 hour service is available for urgent orders.
Does gas nitriding cause distortion?
No. Gas nitriding is performed at 495–565°C — well below the transformation temperature of steel — and requires no quenching. This means zero distortion. Components maintain their exact finished dimensions, which is why gas nitriding is ideal for precision-machined parts.
What materials can be gas nitrided?
Alloy steels containing chromium, molybdenum, vanadium, or aluminium give the best results. Common grades include EN41B, 41Cr4, 42CrMo4, 31CrMoV9, EN19, EN24, H13, D2, and P20. Some stainless steels (17-4 PH, 420, 440C) can also be nitrided. Plain carbon steels respond poorly to gas nitriding — FNC is a better alternative for those.
What is FNC and do you offer it in Pune?
FNC (Ferritic Nitro Carburizing) is a modified nitriding process that adds both nitrogen and carbon to the surface. It creates superior corrosion resistance and is used as a chrome plating replacement. Yes — SR Thermal Solution offers FNC nitrocarburizing service in Pune along with gas nitriding and ONC.
Can I send components from outside Pune?
Absolutely. While we’re based in Pune, we serve manufacturers across India. Regular clients ship from Mumbai, Nashik, Aurangabad, Kolhapur (Maharashtra), Ahmedabad, Rajkot (Gujarat), Bangalore, Chennai, Jamshedpur, Delhi NCR, and other cities. We provide packaging guidance for safe transit.
Where exactly is SR Thermal Solution located in Pune?
We’re at Gat No-1544, Sonawane Wasti Road, Near Vikas Anath Ashram, Chikhali, Pune – 411062. This is in the PCMC (Pimpri Chinchwad) area — 15 minutes from Bhosari MIDC, 25 minutes from Chakan, and easily accessible from Mumbai-Pune Expressway and Pune-Nashik Highway.
What quality reports do I get with treated components?
Every batch includes: process parameters (temperature, time, ammonia flow), hardness test results (Vickers/Rockwell/Brinell), case depth measurement, and a process completion certificate. Metallographic cross-section reports available on request.