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Hastelloy C2000 Washers Manufacturer & Exporter in India

Explore Hastelloy C2000 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

1100

Max Temp

🌡

1100

Suitable for continuous service up to approximately 1100°C under typical operating conditions.

⚡

800

Typical tensile strength around 800 MPa depending on product form and heat treatment.

🛡

Excellent

Excellent corrosion resistance in a wide range of industrial environments.

⚖

8.9

Typical density is approximately 8.9 g/cm³.

Product Overview

What are Hastelloy C2000 Washers?

Hastelloy C2000 washers are nickel-chromium-molybdenum-copper alloy fastener components manufactured from UNS N06200 bar or plate stock conforming to ASTM B574. The alloy’s unique combination of chromium (22-24%), molybdenum (15-17%), and copper (1.5-2.5%) delivers outstanding resistance to both oxidising and reducing corrosive media – a dual capability no other single nickel alloy achieves as effectively.

With a PREN exceeding 55, Hastelloy C2000 washers resist chloride-induced pitting, crevice corrosion, and stress corrosion cracking in aggressive chemical process environments. They are specified under ASME and NACE standards for use in sulphuric acid plants, pharmaceutical reactors, flue gas scrubbers, and offshore chemical injection systems where standard C-276 or 316L stainless washers fail prematurely.

Quick Specifications

MaterialHastelloy C2000
UNS NumberN06200
DIN Number2.4675
Material StandardASTM B574 / ASTM B575
Washer Standard (Metric)DIN 125 / DIN 9021 / ISO 7089
Washer Standard (Inch)ASME B18.22.1 / ASME B18.21.1
Types AvailableFlat, Spring, Lock, Fender, Taper
Diameter RangeM6-M64 / ¼"-2½"
Tensile Strength690 MPa (100 ksi) min
Yield Strength310 MPa (45 ksi) min
HardnessMax 35 HRC / 241 HB
? All material certified by NABL-accredited laboratory. PMI available on request.

Complete the Fastener Set

Other Hastelloy C2000 Fastener Products Available from RealBolt

RealBolt also manufactures the complete Hastelloy C2000 fastener range from certified nickel-molybdenum-chromium superalloy bar stock, including Hastelloy C2000 Bolts, Hastelloy C2000 Nuts, Hastelloy C2000 Screws, Hastelloy C2000 Studs, and Hastelloy C2000 Threaded Rods. All Hastelloy C2000 fastener types are produced to ASTM with full EN 10204 MTC 3.1/3.2 documentation.
Hastelloy C2000 Bolts
Hastelloy C2000 Nuts
Hastelloy C2000 Screws
Hastelloy C2000 Studs
Hastelloy C2000 Threaded Rods

Technical Data

Hastelloy C2000 Washers Dimensions, Sizes & Thread Standards

Hastelloy C2000 Washers are available in metric M6–M100 and inch ¼″–4″ as standard. Per DIN 125 (flat washers) / DIN 9021 (large OD) / ISO 7089. Custom OD and thickness available. Inch dimensions per ASME B18.22.1. All Hastelloy C2000 washers dimensions are verified against applicable DIN, ISO, and ASME B18

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

Bolt Size (M)ID (mm)OD (mm)Thickness (mm)Large OD DIN 9021 (mm)
M66.412.51.618
M88.4171.624
M1010.5212.030
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

Dimensional & Material Standards

StandardCoversType
DIN 125Flat washers, normal seriesMetric
DIN 9021Flat washers, large OD seriesMetric
ISO 7089Plain washers, normal seriesMetric
ISO 7093Plain washers, large seriesMetric
ASME B18.22.1Plain washers, inch seriesUNC/UNF
ASME B18.21.1Lock washers, inch seriesUNC/UNF
Material StandardRequirement
ASTM B574Bar/rod - UNS N06200
ASTM B575Plate/sheet - UNS N06200
NACE MR0175Sour service hardness control
EN 10204 3.1Mill test certificate
EN 10204 3.2TPI-witnessed MTC

Material Chemistry

Hastelloy C2000 Chemical Composition

Hastelloy C2000 Washers derive their exceptional acid corrosion resistance from a precisely controlled nickel-molybdenum-chromium composition per ASTM. High molybdenum and tungsten content suppresses pitting and reducing-acid attack; ultra-low carbon (0.01% max) eliminates sensitization risk in welded assemblies. Full elemental composition is certified in the EN 10204 MTC supplied with every Hastelloy C2000 washers order from RealBolt.

Chemical Composition per ASTM B574

ElementComposition (%)
Nickel (Ni)Balance (min 59%)
Chromium (Cr)22.0-24.0%
Molybdenum (Mo)15.0-17.0%
Copper (Cu)1.5-2.5%
Iron (Fe)3.0% max
Carbon (C)0.01% max
Manganese (Mn)0.50% max
Silicon (Si)0.08% max
Aluminium (Al)0.50% max
Cobalt (Co)2.0% max
Tungsten (W)0.50% max
? All heats verified by NABL-accredited spectrometry. PMI available on request.

Why Hastelloy C2000 Alloy Composition Matters for Washers

Mo (15–17%) — Exceptional Pitting & Crevice Resistance
The high molybdenum content gives Hastelloy C2000 a PREN exceeding 55, making it highly resistant to crevice corrosion beneath washer bearing surfaces — a critical failure zone in bolted flange assemblies exposed to chloride-bearing or acidic process fluids.
Cu (1.5–2.5%) — Resistance to Reducing Acids
The copper addition is the defining feature of C2000 over C-276. It provides superior resistance to dilute sulphuric acid and hydrochloric acid in reducing conditions, making these washers the preferred choice for chemical process equipment where both oxidising and reducing environments alternate.
Ultra-Low Carbon (0.01% max) — Sensitisation-Free
The extremely low carbon ceiling prevents carbide precipitation at grain boundaries during fabrication or elevated-temperature service. Hastelloy C2000 washers retain full corrosion resistance in the as-welded condition without any post-weld heat treatment requirement.

Fastener Performance

Hastelloy C2000 Washers Mechanical Properties & Torque & Proof Load Reference

The table below lists mechanical properties and proof load reference for Hastelloy C2000 Washers per ASTM. Hastelloy C2000 washers achieve 800 MPa tensile strength, with hardness, yield, and elongation values verified by NABL-accredited testing and reported in the EN 10204 MTC.

Washer Load Capacity Reference - Flat Washers (DIN 125)

Bolt SizeID (mm)OD (mm)Thickness (mm)Max Bearing Load (kN)
M1213.0242.538
M1617.0303.068
M2021.0373.0105
M2425.0444.0152
M3031.0564.0240
M3637.0665.0348
M4243.0787.0480
M4850.0928.0630
?? Installation note: Use nickel-based anti-seize on mating bolt threads. Hastelloy C2000 washers are compatible with C-276, C-22, and 625 fasteners. Avoid direct contact with carbon steel in immersed chloride service.

Industry Applications

Hastelloy C2000 Washers Applications — Industries & End Uses

Hastelloy C2000 Washers from RealBolt are specified across chemical processing, pharmaceutical, oil and gas, and FGD where excellent corrosion resistance and 800 MPa tensile strength are required for reliable fastener performance. Click each industry below for detailed application examples. Select an industry below to see specific Hastelloy C2000 washers application details and RealBolt stock availability.
Hastelloy C2000 washers are the preferred choice for bolted flange assemblies in sulphuric acid production, alkylation units, and mixed acid handling systems. The copper addition provides measurably better resistance to dilute H2SO4 than C-276 or C-22, making C2000 washers the engineered upgrade for acid plant maintenance engineers.
Reactor closure flanges, agitator shaft seals, and heat exchanger nozzle connections in pharmaceutical API manufacturing require washers that resist both oxidising cleaning agents (CIP/SIP) and reducing process solvents. Hastelloy C2000 washers meet FDA material traceability requirements and resist the full pH range encountered in multipurpose batch reactors.
FGD scrubber internals, absorber tower flanges, and recirculation pump connections are exposed to hot, chloride-saturated, acidic slurries that destroy standard stainless steel and even C-276 washers over time. Hastelloy C2000 washers provide extended service life in these environments due to their combined resistance to HCl, H2SO4, and chloride pitting.
Subsea and topside chemical injection skids handling corrosion inhibitors, methanol, and scale inhibitors require washers that resist both the injected chemicals and the surrounding seawater environment. Hastelloy C2000 washers are specified for chemical injection valve bonnets, manifold flanges, and umbilical termination assemblies.

Hastelloy C2000 Washers Standards & International Certifications

Hastelloy C2000 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 Hastelloy C2000 Washers from India's Leading Manufacturer — Get a Competitive Quote Today

Partner with RealBolt — India’s leading manufacturer of certified Hastelloy C2000 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

Hastelloy C2000 Washers — Frequently Asked Questions

Browse expert answers to common questions about Hastelloy C2000 Washers from RealBolt — covering acid corrosion resistance, NACE MR0175 compliance, ASTM standards, available sizes, and MTC documentation. Contact our technical team directly for project-specific guidance on Hastelloy C2000 washers selection and pricing.
Hastelloy C2000 washers are manufactured from bar or plate conforming to ASTM B574 (rod/bar) or ASTM B575 (plate/sheet) for UNS N06200. Dimensional standards for metric flat washers follow DIN 125 (normal series) and DIN 9021 (large OD series), with ISO 7089 and ISO 7093 also applicable. Inch series washers are produced per ASME B18.22.1 (plain) and ASME B18.21.1 (lock). All material is supplied with EN 10204 3.1 mill test certificates as standard, with 3.2 TPI-witnessed certification available on request.
Hastelloy C2000 and C-276 share similar molybdenum-driven resistance to chloride pitting and crevice corrosion, but C2000 offers a distinct advantage in oxidising acid environments due to its copper addition (1.5-2.5%). In dilute sulphuric acid and mixed acid service, C2000 washers outperform C-276 by a measurable margin. For purely reducing or neutral chloride environments, C-276 remains a cost-competitive alternative. For processes that alternate between oxidising and reducing conditions – common in batch chemical reactors and pharmaceutical plant – C2000 is the technically superior choice.
Yes – Hastelloy C2000 flat washers are routinely supplied as part of complete ASME B16.5 flange bolt sets alongside C2000 or C-276 stud bolts and heavy hex nuts. Washers are sized to suit the bolt diameter and flange face OD for Class 150 through Class 2500 flanges. Using matched-alloy washers prevents galvanic corrosion at the bearing interface and ensures uniform load distribution across the gasket. Sets are supplied with a single EN 10204 3.1 MTC covering all components from the same heat.
In oxidising atmospheres, Hastelloy C2000 maintains adequate oxidation resistance up to approximately 1040°C. In reducing or sulphur-bearing high-temperature environments, the practical service limit is closer to 760°C to avoid sulphidation attack. For bolted flange applications in chemical process plant, the alloy performs reliably across the full range of process temperatures encountered in pressure vessel and heat exchanger service, typically up to 400°C, where creep relaxation of the washer is not a design concern.

Industrial Cities We Serve:

  • Ahmedabad
  • Aurangabad
  • Bengaluru
  • Chennai
  • Coimbatore
  • Faridabad
  • Gandhidham
  • Greater Noida
  • Gurugram
  • Hazira
  • Hosur
  • Hyderabad
  • Jamnagar
  • Jamshedpur
  • Ludhiana
  • Mumbai
  • Mundra
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  • Navi Mumbai
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Countries We Export To:

  • US
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