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Inconel 600 Washers Manufacturer & Exporter in India

Explore Inconel 600 Washers Manufacturer & Exporter in India manufactured for demanding industrial applications with reliable strength, corrosion resistance and compliance with international standards.
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-200

Min Temp

1200

Max Temp

🌡

1200

Suitable for continuous service up to approximately 1200°C under typical operating conditions.

⚡

760

Typical tensile strength around 760 MPa depending on product form and heat treatment.

🛡

Excellent

Excellent corrosion resistance in a wide range of industrial environments.

⚖

8.4

Typical density is approximately 8.4 g/cm³.

Product Overview

What are Inconel 600 Washers?

Inconel 600 washers are nickel-chromium alloy fastener components manufactured from UNS N06600 bar or plate stock conforming to ASTM B168 / ASTM B166. The alloy’s high nickel content (72% min) combined with chromium (14-17%) delivers outstanding resistance to oxidation, carburization, and chloride stress corrosion cracking across a wide temperature range from cryogenic to 1093°C.

Inconel 600 washers are specified under ASME, ASTM, and NACE standards for use in nuclear, chemical processing, heat treatment, and offshore environments. Their ability to maintain mechanical integrity and corrosion resistance under bolt heads and nut bearing faces – where crevice conditions are most severe – makes them the preferred choice over stainless steel washers in aggressive service.

Quick Specifications

MaterialInconel 600
UNS NumberN06600
DIN Number2.4816
Material StandardASTM B168 / ASTM B166
Washer Standard (Metric)DIN 125 / DIN 9021 / ISO 7089
Washer Standard (Inch)ASME B18.21.1 / ASME B18.22.1
Types AvailableFlat, Spring, Lock, Fender, Taper, Ogee
Diameter RangeM6-M100 / ¼"-4"
Tensile Strength550 MPa (80 ksi) min
Yield Strength240 MPa (35 ksi) min
HardnessMax 35 HRC / 200 HB
? All material certified by NABL-accredited laboratory. PMI available on request.

Complete the Fastener Set

Other Inconel 600 Fastener Products Available from RealBolt

RealBolt also manufactures the complete Inconel 600 fastener range from certified nickel-chromium superalloy bar stock, including Inconel 600 Bolts, Inconel 600 Nuts, Inconel 600 Screws, Inconel 600 Studs, and Inconel 600 Threaded Rods. All Inconel 600 fastener types are produced to ASTM with full EN 10204 MTC 3.1/3.2 documentation.
Inconel 600 Bolts
Inconel 600 Nuts
Inconel 600 Screws
Inconel 600 Studs
Inconel 600 Threaded Rods

Technical Data

Inconel 600 Washers Dimensions, Sizes & Thread Standards

Inconel 600 Washers are available in metric M6–M100 and inch ¼″–4″ as standard. Per DIN 125 (flat washers) / DIN 9021 (large OD washers) / ISO 7089. Custom OD and thickness available. Inch dimensions per ASME B18.21.1 and ASME B18.22.1. All Inconel 600 washers dimensions conform to applicable DIN, ISO, and ASME B18 standards.

Flat Washer Dimensions - Metric (DIN 125 / ISO 7089)

Bolt Size (M)ID (mm)OD (mm)Thickness (mm)Large OD DIN 9021 (mm)
M66.4121.618
M88.4161.624
M1010.5202.030
M1213.0242.537
M1617.0303.050
M2021.0373.060
M2425.0444.072
M3031.0564.092
M3637.0665.0110
M4243.0787.0130
M4850.0928.0150
M5658.01059.0175
M6466.01159.0200
M7274.012510.0220
M8082.014012.0250
M100104.017514.0310

Dimensional & Material Standards

StandardCoversSystem
DIN 125Flat washers, normal seriesMetric
DIN 9021Flat washers, large OD seriesMetric
ISO 7089Plain washers, normal seriesMetric
ISO 7093Plain washers, large seriesMetric
ASME B18.21.1Lock washersInch
ASME B18.22.1Plain washersInch
ASME B16.5Flange washer setsInch
Material StandardRequirement
ASTM B168Plate/sheet/strip - UNS N06600
ASTM B166Bar/rod/wire - UNS N06600
ASTM F432Washer mechanical properties
NACE MR0175Sour service hardness =35 HRC
EN 10204 3.1Mill test certificate
EN 10204 3.2TPI-witnessed MTC

Material Chemistry

Inconel 600 Chemical Composition

Inconel 600 Washers are manufactured from a nickel-chromium superalloy containing nickel (72% min), chromium (14–17%), and iron (6–10%). Each element is precisely controlled per ASTM — nickel provides chloride SCC immunity, chromium drives high-temperature oxidation resistance, and iron balances structural stability and alloy cost.

Chemical Composition per ASTM B168 / ASTM B166

ElementComposition (%)
Nickel (Ni)72.0% min
Chromium (Cr)14.0-17.0%
Iron (Fe)6.0-10.0%
Carbon (C)0.15% max
Manganese (Mn)1.0% max
Silicon (Si)0.50% max
Copper (Cu)0.50% max
Sulphur (S)0.015% max
? All heats verified by NABL-accredited spectrometry. PMI available on request.

Why Inconel 600 Alloy Composition Matters for Washers

Ni (72% min) — Chloride Stress Corrosion Cracking Immunity
The high nickel base of Inconel 600 provides complete immunity to chloride-induced stress corrosion cracking — a failure mode that eliminates austenitic stainless steel washers in hot chloride environments such as nuclear steam generators and chemical plant flanges.
Cr (14–17%) — High-Temperature Oxidation Resistance
Chromium forms a stable, adherent oxide layer that protects washer bearing surfaces at temperatures up to 1093°C. This makes Inconel 600 washers the standard choice for furnace hardware, heat treatment fixtures, and high-temperature flange assemblies where stainless steel scales and loses load-bearing capacity.
Fe (6–10%) — Structural Stability and Formability
The controlled iron content improves hot workability during washer stamping and machining without compromising corrosion resistance. It also contributes to dimensional stability under cyclic thermal loading, preventing washer creep and bolt load relaxation in high-temperature bolted joints.

Fastener Performance

Inconel 600 Washers Mechanical Properties & Torque & Proof Load Reference

The table below lists mechanical properties and proof load reference for Inconel 600 Washers per ASTM. Inconel 600 washers achieve 760 MPa tensile strength, with hardness, yield, and elongation values verified by NABL-accredited testing and reported in the EN 10204 MTC.

Washer Bearing Load Reference - Flat Washers (DIN 125)

Washer SizeID (mm)OD (mm)Thickness (mm)Max Bearing Load (kN)
M1213.0242.528
M1617.0303.052
M2021.0373.082
M2425.0444.0118
M3031.0564.0190
M3637.0665.0278
M4243.0787.0385
M4850.0928.0510
?? Installation note: Use nickel-based anti-seize on mating bolt threads. Ensure washer bearing face is clean and free of scale before assembly. Do not use copper-based compounds on nickel alloy washer assemblies.

Industry Applications

Inconel 600 Washers Applications — Industries & End Uses

Inconel 600 Washers from RealBolt are specified across oil and gas, aerospace, chemical processing, and power generation where excellent corrosion resistance and 760 MPa tensile strength are required for reliable fastener performance. Click each industry below for detailed application examples.
Inconel 600 washers are the historical standard for pressurized water reactor (PWR) steam generator tube support plates, reactor vessel closure stud assemblies, and primary coolant loop flange connections. The alloy’s immunity to chloride stress corrosion cracking in high-purity water at 300°C+ makes it irreplaceable in nuclear primary circuit bolted joints.
Flat and spring washers for furnace muffle flange connections, retort cover assemblies, radiant tube end fittings, and conveyor belt furnace structural hardware. Inconel 600 maintains load-bearing capacity and resists scaling at continuous service temperatures up to 1093°C in both oxidizing and reducing atmospheres.
Washer sets for heat exchanger channel cover flanges, reactor vessel nozzle connections, and pressure vessel manway closures in caustic soda (NaOH), organic acid, and mixed alkali environments where austenitic stainless steel suffers caustic stress corrosion cracking. Inconel 600 is immune to caustic SCC at all concentrations.
Inconel 600 washers are used in aircraft engine exhaust collector flange assemblies, APU exhaust duct connections, and nacelle thermal barrier attachment hardware where oxidation resistance and dimensional stability at elevated temperature are required simultaneously. Conforms to AMS 5540 specification.

Inconel 600 Washers Standards & International Certifications

Inconel 600 Washers from RealBolt Engineering Industries are manufactured to internationally recognised fastener dimensional standards covering thread form, tolerances, strength grades, and quality requirements. Every batch ships with EN 10204 MTC 3.1/3.2, PMI (XRF), NACE MR0175/ISO 15156, and NABL-accredited lab reports — available on request for all orders.
Standards
DIN 125A DIN 126 DIN 127 DIN 128 ISO 7089 ISO 7090 ASME B18.21.1 EN ISO 7089 IS 5372 IS 1367
Certifications
ISO 9001:2015NACE MR0175NABL LabPED 2014/68/EUMTC 3.1 / 3.2

Buy Inconel 600 Washers from India's Leading Manufacturer — Get a Competitive Quote Today

Partner with RealBolt — India’s leading manufacturer of certified Inconel 600 Washers — for competitive pricing, EN 10204 MTC 3.1/3.2 documentation, and fast Mumbai dispatch. Standard sizes are ex-stock; custom dimensions accepted with 2–3 week lead time. Request your quote today.
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Answers for Buyers

Inconel 600 Washers — Frequently Asked Questions

Browse expert answers to common questions about Inconel 600 Washers from RealBolt — covering ASTM standards, max service temperature, corrosion resistance, available sizes, lead times, and MTC certification. Contact our technical team directly for project-specific guidance on Inconel 600 washers selection and pricing.
Inconel 600 flat washers are manufactured to DIN 125 (normal series), DIN 9021 (large OD series), ISO 7089, and ISO 7093 for metric sizes. Inch washers are supplied per ASME B18.22.1 (plain washers) and ASME B18.21.1 (lock washers). Custom OD, ID, and thickness combinations are available for flange and pressure vessel applications with 10-15 working day lead time. Spring washers are available to DIN 127 and DIN 128.
Yes – Inconel 600 (UNS N06600) has been the standard alloy for nuclear steam generator and reactor vessel fastener assemblies for decades. Its immunity to chloride stress corrosion cracking in high-purity water at PWR operating temperatures (290-325°C) and its resistance to radiation-induced sensitization make it the preferred washer material for primary circuit bolted connections. All nuclear-grade washers are supplied with full EN 10204 3.2 TPI-witnessed certification and heat traceability.
Inconel 600 washers maintain structural integrity and oxidation resistance up to 1093°C in oxidizing atmospheres and up to 1204°C in reducing or neutral atmospheres. Above 425°C, carbon precipitation can occur in sensitization-prone conditions – specify low-carbon heat (C = 0.05%) for prolonged service in the 425-760°C range. For continuous service above 980°C, confirm application details with our engineering team to select the correct heat treatment condition.
Yes – Inconel 600 is one of the few alloys with proven immunity to caustic stress corrosion cracking (caustic SCC) at all NaOH concentrations and temperatures, including concentrated caustic at elevated temperature where Type 316L stainless steel fails rapidly. Inconel 600 washers are widely specified for caustic evaporator flange assemblies, digester vessel closures, and alkali process heat exchanger connections in pulp and paper, alumina refining, and chemical manufacturing.

Industrial Cities We Serve:

  • Ahmedabad
  • Aurangabad
  • Bengaluru
  • Chennai
  • Coimbatore
  • Faridabad
  • Gandhidham
  • Greater Noida
  • Gurugram
  • Hazira
  • Hosur
  • Hyderabad
  • Jamnagar
  • Jamshedpur
  • Ludhiana
  • Mumbai
  • Mundra
  • Mysuru
  • Nagpur
  • Nashik
  • Navi Mumbai
  • Noida
  • Pune
  • Rajkot
  • Sanand
  • Surat
  • Thane
  • Tiruppur
  • Vadodara
  • Visakhapatnam

Countries We Export To:

  • US
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  • Mexico
  • Germany
  • UK
  • France
  • Italy
  • Spain
  • Netherlands
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  • Norway
  • Denmark
  • Turkey
  • UAE
  • Saudi Arabia
  • Qatar
  • Oman
  • Kuwait
  • Bahrain
  • South Africa
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