Gas Nitriding Job Work in Pune & Mumbai — SR Thermal Solution

If you are a manufacturer in Pune or Mumbai searching for reliable gas nitriding job work, you have come to the right place. SR Thermal Solution provides commercial gas nitriding job work from our ISO 9001:2015 certified facility in Chikhali, Pune. We serve manufacturers across Pune, Mumbai, Thane, Navi Mumbai, and the entire Maharashtra region with fast turnaround, competitive pricing, and consistent quality.

Gas nitriding job work is a contract heat treatment service where you send your steel components to our facility. We process them in our horizontal gas nitriding furnace and return them with enhanced surface hardness, wear resistance, and fatigue life — all without any dimensional distortion. Our furnace handles batches up to 1,200 kg, making us one of the largest gas nitriding job work providers in Western India.

Whether you manufacture crankshafts in Bhosari, injection moulds in Chakan, hydraulic cylinders in Thane, or forging dies in Taloja — SR Thermal Solution is your trusted partner for gas nitriding job work in Pune and Mumbai.

Need a quote right now? Call +91 8378848736 or visit our contact page.

What Is Gas Nitriding Job Work?

Gas nitriding job work is a contract-based surface hardening service. In this model, manufacturers send their precision steel components to a specialist heat treatment facility like SR Thermal Solution. The facility processes the components using gas nitriding technology and returns them with significantly improved surface properties.

The gas nitriding process works by diffusing nitrogen atoms into the steel surface at temperatures between 495°C and 565°C. Ammonia gas is introduced into a sealed furnace, where it breaks down into nitrogen and hydrogen. The nitrogen atoms penetrate the component surface over a period of 15 to 100+ hours, forming extremely hard iron nitrides. These nitrides create a wear-resistant case typically 0.1 to 0.8 mm deep.

The most important advantage of gas nitriding is that it requires no quenching. This means your finished, precision-machined components maintain their exact dimensions after treatment. There is zero distortion — no warping, no size changes, and no need for post-treatment grinding. This is why gas nitriding job work is the preferred choice for manufacturers who need hardened surfaces on components that are already machined to final size.

Why Do Pune & Mumbai Manufacturers Need Gas Nitriding Job Work?

Pune and Mumbai together form the largest industrial corridor in Western India. This region is home to hundreds of automotive OEMs, tier-1 suppliers, tool rooms, forging companies, hydraulic equipment makers, and heavy engineering firms. All of these industries produce steel components that require surface hardening for optimal performance.

However, setting up an in-house gas nitriding furnace is expensive. A horizontal gas nitriding furnace costs 60 to 90 lakhs, plus monthly operating costs of 3 to 7 lakhs for electricity, ammonia gas, skilled operators, and maintenance. For most manufacturers in Pune and Mumbai, outsourcing to a professional gas nitriding job work provider like SR Thermal Solution is the smarter financial decision.

Pune — India’s Automotive & Engineering Capital

Pune’s industrial belt — including Bhosari MIDC, Chakan, Talegaon, Ranjangaon, Hinjewadi, and Pimpri Chinchwad — hosts major automotive manufacturers like Tata Motors, Bajaj Auto, Mercedes-Benz, Volkswagen, Mahindra, and Force Motors. Hundreds of tier-1 and tier-2 suppliers in these industrial areas need nitriding job work in Pune for gears, shafts, crankshafts, connecting rods, dies, and moulds.

SR Thermal Solution is located in Chikhali, right in the heart of the PCMC industrial zone. We are just 15 minutes from Bhosari MIDC, 25 minutes from Chakan, and 35 minutes from Talegaon. This central location means your components spend less time in transit and more time in our furnace.

Mumbai — India’s Industrial & Financial Hub

Mumbai’s industrial areas — including Thane, Navi Mumbai, Taloja MIDC, Ambernath MIDC, Bhiwandi, and Vasai — are home to forging companies, tool and die makers, defence equipment manufacturers, shipbuilders, and heavy engineering firms. These industries regularly require nitriding job work in Mumbai for their precision components.

SR Thermal Solution serves Mumbai manufacturers with a simple logistics model for gas nitriding job work in Mumbai. Components are shipped from Mumbai to our Pune facility via the Mumbai-Pune Expressway — a distance of approximately 150 km, covered in 3 to 4 hours. Many of our Mumbai clients ship components via transport on Monday and receive treated components back by Friday of the same week.

Our Gas Nitriding Job Work Process — Step by Step

Step 1 — Enquiry & Technical Review

You contact us with your requirements — component name, material grade, required surface hardness (HV or HRC), required case depth (mm), quantity, and weight per piece. Our engineering team reviews the specifications and recommends the optimal process parameters. We provide a quotation within 4 working hours.

Step 2 — Component Receipt & Inspection

You ship or deliver your components to our Chikhali, Pune facility. Our quality team inspects incoming components for cleanliness, surface condition, and material verification. We perform incoming hardness testing to confirm the components are in the correct pre-nitriding condition (hardened and tempered).

Step 3 — Furnace Loading & Gas Nitriding Cycle

Components are carefully loaded into our horizontal gas nitriding furnace (1,200 kg batch capacity). The furnace is sealed and purged with nitrogen to remove oxygen. Temperature is raised to the nitriding temperature (typically 500 to 560°C) at a controlled rate. Ammonia gas is introduced at a precisely controlled flow rate using mass flow controllers. Components are held at temperature for the required duration — from 15 hours for shallow case to 100+ hours for deep case.

Step 4 — Controlled Cooling

After the nitriding cycle completes, the furnace cools gradually under a protective nitrogen atmosphere. No quenching is performed. This controlled cooling ensures zero distortion on your precision-machined components.

Step 5 — Quality Testing & Documentation

Post-treatment, we perform comprehensive quality testing on every batch. This includes Vickers hardness testing on the nitrided surface, Rockwell hardness verification, case depth measurement using micro-hardness traverse, and visual inspection. Every batch is documented with a complete quality report.

Step 6 — Packing & Dispatch

Treated components are carefully packed with anti-corrosion protection and dispatched. Pune-based clients can collect same-day or next-day. Mumbai clients typically receive components within 2 to 3 days via transport. Typical turnaround for standard gas nitriding job work is 3 to 7 working days. Express 24 to 48 hour service is available for urgent orders.

Gas Nitriding Job Work Capabilities at SR Thermal Solution

Parameter	Specification
Furnace Type	Horizontal gas nitriding furnace
Maximum Batch Capacity	1,200 kg per cycle
Temperature Range	400°C to 600°C
Temperature Control	±1°C (PID + thyristor)
Atmosphere Control	Precision ammonia mass flow controllers
Component Size Range	10 grams to 500+ kg individual pieces
Processes Available	Gas Nitriding, FNC, ONC
Quality Certifications	ISO 9001:2015, ZED certified
Testing Equipment	Rockwell, Vickers, Brinell, metallographic lab

Materials We Process for Gas Nitriding Job Work

Steel Grade	Application	Industries
EN41B (Nitralloy)	Purpose-built for nitriding	Aerospace, defence
41Cr4 / 42CrMo4	Crankshafts, gears	Automotive
31CrMoV9	High-performance nitriding	Automotive, tooling
EN19 (AISI 4140)	Gears, shafts	Automotive, general engineering
EN24 (AISI 4340)	Heavy-duty shafts	Heavy engineering
H13	Die casting dies, forging dies	Tool and die
D2	Blanking tools, press dies	Tool and die
P20	Injection moulds	Plastics industry
17-4 PH, 420 SS	Corrosion-resistant parts	Aerospace, medical

Components We Gas Nitride for Pune & Mumbai Clients

Automotive Components

Crankshafts, camshafts, gear shafts, transmission gears, splines, valve components, piston rings, cylinder liners, brake rotors (via FNC), connecting rods, cam followers, and rocker arms. We serve automotive clients from Bhosari, Chakan, Talegaon, Ranjangaon (Pune), and Thane, Navi Mumbai, Taloja (Mumbai).

Tool & Die Components

Injection moulds in H13 and P20, die casting dies and inserts, forging dies, aluminium extrusion dies, press tools, stamping dies, extruder screws and barrels, punches, core pins, and ejector pins. Gas nitriding extends die life by 3 to 5 times.

Hydraulic Components

Hydraulic cylinder rods, piston rods, valve spools, pump shafts, and hydraulic valve bodies. We also offer FNC for hydraulic components requiring superior corrosion resistance. Major demand comes from Mumbai and Pune hydraulic equipment manufacturers.

Heavy Engineering Components

Machine tool spindles, ball screws, lead screws, precision guides, textile machinery spindles, pump shafts, impellers, crusher parts, and mining equipment components. These are commonly sent from Mumbai’s Thane-Belapur industrial belt and Pune’s Bhosari MIDC.

Gas Nitriding Job Work Pricing — Pune & Mumbai

Case Depth	Cycle Time	Approx. Cost/kg
0.1 to 0.2 mm	15 to 24 hours	₹25 to 35 per kg
0.2 to 0.4 mm	24 to 48 hours	₹35 to 45 per kg
0.4 to 0.6 mm	48 to 80 hours	₹40 to 50 per kg
0.6 to 0.8 mm	80 to 120 hours	₹50 to 60 per kg

These are indicative rates. Mumbai clients should note that transport costs are additional but typically minimal (₹500 to ₹1,500 per shipment). Contact SR Thermal Solution for an exact quotation — we respond within 4 hours.

FNC and ONC Job Work — Beyond Standard Gas Nitriding

FNC — Ferritic Nitro Carburizing Job Work

FNC introduces both nitrogen and carbon into the steel surface at approximately 570°C. This creates a compound layer with superior wear and corrosion resistance. FNC is widely used as a cost-effective replacement for chrome plating. As a leading provider of FNC job work in Pune, we process brake rotors, cylinder liners, hydraulic valve bodies, fasteners, and bearing components.

ONC — Oxy Nitro Carburizing Job Work

ONC adds a controlled oxidation step after the nitro carburizing process. The result is a component with a dense black oxide layer providing both corrosion protection and an attractive black finish. It is commonly used for hand tools, machine tool parts, automotive fasteners, and hydraulic components.

Looking for a broader overview of processes, applications, and industries? Read our guide to gas nitriding services in Pune & Mumbai or explore types of heat treatment services in India.

Gas Nitriding Job Work vs Other Surface Hardening

Factor	Gas Nitriding	Carburizing	Induction Hardening
Temperature	495 to 565°C	850 to 950°C	Localised heating
Distortion	Zero — no quench	Significant	Some
Case Depth	0.1 to 0.8 mm	0.3 to 3.0 mm	1 to 5 mm
Post-grinding	Not needed	Usually needed	Sometimes needed
Surface Hardness	700 to 1100 HV	58 to 62 HRC	55 to 62 HRC
Best For	Finished precision parts	Gears — deep case	Localised hardening
Coverage	All surfaces	All surfaces	Targeted areas only

Pune & Mumbai Industrial Areas We Serve

Pune Region

Bhosari MIDC (15 min), Chakan Industrial Area (25 min), Talegaon MIDC (35 min), Ranjangaon MIDC (40 min), Hinjewadi (30 min), Pimpri Chinchwad PCMC (home base), Kudalwadi/Chikhali (immediate), Hadapsar/Fursungi (45 min).

Mumbai Region

Thane (2.5 hours), Navi Mumbai/Taloja MIDC (3 hours), Ambernath MIDC (3 hours), Bhiwandi, Vasai-Virar, Andheri/Goregaon. All connected via the Mumbai-Pune Expressway.

Other Maharashtra Cities

Nashik, Aurangabad (Sambhajinagar), Kolhapur, Satara, Ahmednagar — components are shipped to our Pune facility from anywhere in Maharashtra.

Why Choose SR Thermal Solution for Gas Nitriding Job Work?

We build our own furnaces. SR Thermal Solution’s furnace manufacturing division designs and builds the same gas nitriding furnaces we use for job work. We understand the equipment at a fundamental engineering level. No other gas nitriding job work provider in Pune or Mumbai manufactures their own furnaces.

1,200 kg batch capacity — one of the largest in Western India. 19+ years of experience under Mr. Rambhau Tarase. ISO 9001:2015 and ZED certified. Complete quality reports with every batch. Trusted by Mahindra CIE Automotive, Ramkrishna Forgings, Dana Anand India, and multiple tier-1 suppliers. Learn more about our nitriding job work services.

Frequently Asked Questions — Gas Nitriding Job Work

Contact SR Thermal Solution

• Phone: +91 8378848736 / +91 8975966868
• Email: srthermal.solution@gmail.com / srtssales@gmail.com
• WhatsApp: +91 8378848736
• Address: Gat No-1544, Sonawane Wasti Road, Near Vikas Anath Ashram, Chikhali, Pune – 411062, Maharashtra
• Hours: Monday to Saturday, 9:00 AM to 7:00 PM