+912267437972

+919022636025

enquiry@real-bolt.com

Contact Us

Hastelloy C22 Threaded Rods Manufacturer & Exporter in India

Explore Hastelloy C22 Threaded Rods Manufacturer & Exporter in India manufactured for demanding industrial applications with reliable strength, corrosion resistance and compliance with international standards.
Request a Quote
View Products

-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 C22 Threaded Rods?

Hastelloy C22 threaded rods are nickel-chromium-molybdenum-tungsten alloy fasteners manufactured from UNS N06022 bar stock conforming to ASTM B574. The alloy’s exceptional corrosion resistance stems from its precisely balanced chemistry – 20-22.5% chromium, 12.5-14.5% molybdenum, and 2.5-3.5% tungsten – delivering outstanding resistance to both oxidising and reducing media simultaneously.

With a PREN exceeding 65, Hastelloy C22 threaded rods outperform virtually every other wrought nickel alloy in mixed-acid environments, wet chlorine service, and hypochlorite-bearing process streams. These rods are specified under NACE MR0175/ISO 15156 for sour-service pressure vessel closures, chemical reactor tie rods, and flue gas scrubber internals where no other alloy provides adequate service life.

Quick Specifications

MaterialHastelloy C22
UNS NumberN06022
DIN Number2.4602
Material StandardASTM B574
Threaded Rod Standard (Metric)DIN 975 / DIN 976 / ISO 888
Threaded Rod Standard (Inch)ASME B18.31.3
Thread FormISO Metric / UNC / UNF
Diameter RangeM6-M100 / ¼"-4"
Tensile Strength690 MPa (100 ksi) min
Yield Strength310 MPa (45 ksi) min
HardnessMax 35 HRC / 230 HB
? All material certified by NABL-accredited laboratory. PMI available on request.

Complete the Fastener Set

Other Hastelloy C22 Fastener Products Available from RealBolt

RealBolt also manufactures the complete Hastelloy C22 fastener range from certified nickel-molybdenum-chromium superalloy bar stock, including Hastelloy C22 Bolts, Hastelloy C22 Nuts, Hastelloy C22 Screws, Hastelloy C22 Washers, and Hastelloy C22 Studs. All Hastelloy C22 fastener types are produced to ASTM with full EN 10204 MTC 3.1/3.2 documentation.
Hastelloy C22 Bolts
Hastelloy C22 Nuts
Hastelloy C22 Screws
Hastelloy C22 Washers
Hastelloy C22 Studs

Technical Data

Hastelloy C22 Threaded Rods Dimensions, Sizes & Thread Standards

Hastelloy C22 Threaded Rods are available in metric M6–M100 and inch ¼″–4″ as standard. Per DIN 975 (full-length threaded rod) / DIN 976 (stud bolts) / ISO 888. Custom lengths available. Inch dimensions per ASME B18.31.3. All Hastelloy C22 threaded rods dimensions are verified against applicable DIN, ISO, and ASME

Threaded Rod Dimensions - Metric (DIN 975 / ISO 888)

Size (M)Pitch (mm)Nom. Dia (mm)ToleranceMin L (mm)Max L (mm)
M61.06.06g1001000
M81.258.06g1001000
M101.510.06g1002000
M121.7512.06g1002000
M162.016.06g1003000
M202.520.06g1003000
M243.024.06g1003000
M303.530.06g2004000
M364.036.06g2004000
M424.542.06g2005000
M485.048.06g2005000
M565.556.06g3006000
M646.064.06g3006000
M726.072.06g3006000
M806.080.06g3006000
M1006.0100.06g5006000

Dimensional & Material Standards

StandardCoversThread
DIN 975Full-length threaded rodMetric
DIN 976-1Stud bolts, metricMetric
ISO 888Bolts, screws, studs - lengthsMetric
ASME B18.31.3Continuous threaded rodUNC/UNF
ASME B16.5Stud bolts for flangesUNC
MSS SP-75High-pressure stud boltsUNC
ASTM A193Alloy steel & SS bolting (reference)UNC
Material StandardRequirement
ASTM B574Bar/rod - UNS N06022
ASTM B575Plate/sheet - UNS N06022
NACE MR0175Sour service =35 HRC
EN 10204 3.1Mill test certificate
EN 10204 3.2TPI-witnessed MTC

Material Chemistry

Hastelloy C22 Chemical Composition

Hastelloy C22 Threaded Rods 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 C22 threaded rods order from RealBolt.

Chemical Composition per ASTM B574

ElementComposition (%)
Nickel (Ni)Balance (min ~50%)
Chromium (Cr)20.0-22.5%
Molybdenum (Mo)12.5-14.5%
Tungsten (W)2.5-3.5%
Iron (Fe)2.0-6.0%
Cobalt (Co)2.5% max
Carbon (C)0.010% max
Manganese (Mn)0.50% max
Silicon (Si)0.08% max
Vanadium (V)0.35% max
Phosphorus (P)0.02% max
Sulphur (S)0.02% max
? All heats verified by NABL-accredited spectrometry. PMI available on request.

Why Hastelloy C22 Alloy Composition Matters for Threaded Rods

Mo (12.5–14.5%) + W (2.5–3.5%) — Dual Reducing-Media Protection
The combined molybdenum and tungsten content gives Hastelloy C22 a PREN exceeding 65 — the highest of any standard wrought nickel alloy. This dual addition provides exceptional resistance to reducing acids including hydrochloric, sulphuric, and phosphoric acid, making C22 threaded rods the preferred choice for chemical reactor tie-rod applications where mixed acid exposure is unavoidable.
Cr (20–22.5%) — Oxidising Environment Resistance
The elevated chromium content gives Hastelloy C22 threaded rods outstanding resistance to oxidising media — nitric acid, ferric chloride, and wet chlorine — that would rapidly attack lower-chromium nickel alloys such as C276. This dual oxidising/reducing capability is unique to C22 among the C-family alloys.
Ultra-Low Carbon (0.010% max) — Sensitisation-Free Welding
The extremely low carbon ceiling prevents carbide precipitation at grain boundaries during welding or elevated-temperature service. Hastelloy C22 threaded rods can be welded into assemblies or used in heat-affected zones without risk of intergranular corrosion, eliminating the need for post-weld solution annealing in most process applications.

Fastener Performance

Hastelloy C22 Threaded Rods Mechanical Properties & Torque Reference

The table below lists mechanical properties and torque reference for Hastelloy C22 Threaded Rods per ASTM. Hastelloy C22 threaded rods achieve 800 MPa tensile strength, with hardness, yield, and elongation values verified by NABL-accredited testing and reported in the EN 10204 MTC.

Tightening Torque Reference - Hastelloy C22 Threaded Rods

Rod SizeDry (Nm)Lubricated (Nm)Clamp Load (kN)
M12725828
M1617514067
M20350280107
M24610488155
M301220976246
M3621201696358
M4233802704493
M4850104008648
?? Anti-galling: Use nickel-based anti-seize (Molykote P-37 or Bostik Never-Seez Pure Nickel). Lubricated values assume K=0.15. Never use copper-based anti-seize on nickel alloys - galvanic incompatibility accelerates thread corrosion.

Industry Applications

Hastelloy C22 Threaded Rods Applications — Industries & End Uses

Hastelloy C22 Threaded Rods 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.
Hastelloy C22 threaded rods are the standard specification for tie-rod and closure bolt assemblies on chemical reactors handling mixed oxidising and reducing acid streams. Applications include phosphoric acid digesters, sulphuric acid absorption towers, and nitric/hydrofluoric acid pickling line equipment where no single-chemistry alloy provides adequate resistance.
Threaded rods and stud assemblies for FGD scrubber vessel internals, spray header supports, mist eliminator frames, and absorber tower tie rods. Hastelloy C22 resists the highly corrosive combination of dilute sulphuric acid, chloride ions, and dissolved SO2 that rapidly degrades stainless steel and even C276 alloy fasteners in wet FGD service.
Reactor closure rods, agitator shaft tie rods, and pressure vessel fastener assemblies for pharmaceutical API synthesis vessels handling halogenated solvents, acetic acid, and oxidising cleaning agents. C22 threaded rods meet FDA material traceability requirements and are compatible with CIP/SIP sterilisation cycles.
Threaded rod assemblies for chlorine dioxide bleaching tower internals, washer drum supports, and bleach liquor pipe hangers. Hastelloy C22 provides superior resistance to hypochlorite and chlorine dioxide solutions at elevated temperatures – environments that cause rapid stress corrosion cracking in austenitic stainless steels.

Hastelloy C22 Threaded Rods Standards & International Certifications

Hastelloy C22 Threaded Rods 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 975 DIN 976-1 ASME B18.31.2 IS 1367 IS 1364
Certifications
ISO 9001:2015NACE MR0175NABL LabPED 2014/68/EUMTC 3.1 / 3.2

Buy Hastelloy C22 Threaded Rods from India's Leading Manufacturer — Get a Competitive Quote Today

Partner with RealBolt — India’s leading manufacturer of certified Hastelloy C22 Threaded Rods — 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.
022-6743-7972
+91 90226 36025
Email Us

Answers for Buyers

Hastelloy C22 Threaded Rods — Frequently Asked Questions

Browse expert answers to common questions about Hastelloy C22 Threaded Rods 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 C22 threaded rods selection and pricing.
Hastelloy C22 threaded rods are manufactured to DIN 975 for full-length metric threaded rod and DIN 976-1 for metric stud configurations. Inch-series rods conform to ASME B18.31.3 for continuous threaded rod. Flange stud bolt sets are produced per ASME B16.5 or MSS SP-75. Custom lengths are available in any increment, and special thread forms including BSW, BSF, and BSPP can be produced with a 15 working day lead time. All rods carry thread tolerance 6g per ISO 965.
Hastelloy C22 outperforms C276 in oxidising acid environments due to its higher chromium content (20-22.5% vs 14.5-16.5% in C276). In reducing acid service, both alloys perform similarly, though C22’s combined Mo+W addition provides marginally better pitting resistance (PREN 65+ vs 62+ for C276). For mixed-acid or alternating oxidising/reducing process streams, C22 threaded rods are the preferred specification. C276 remains cost-competitive where purely reducing conditions prevail.
Yes – Hastelloy C22 threaded rods comply with NACE MR0175/ISO 15156 for sour service when supplied in the solution-annealed condition with hardness not exceeding 35 HRC. The alloy is listed in NACE MR0175 Part 3 for use in H2S-bearing oil and gas environments. Hardness survey certificates are available on request for Class 900 and above sour-service applications. All rods are supplied with EN 10204 3.1 MTC confirming hardness compliance.
In oxidising atmospheres, Hastelloy C22 threaded rods maintain adequate oxidation resistance up to approximately 1038°C. In reducing or sulphidising atmospheres, the practical service limit is lower – typically 760°C – due to sulphide attack at elevated temperatures. For structural fastener applications, the recommended maximum continuous service temperature is 650°C, above which creep relaxation must be factored into joint design. Consult our engineering team for high-temperature bolted joint calculations.

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
  • Canada
  • Mexico
  • Germany
  • UK
  • France
  • Italy
  • Spain
  • Netherlands
  • Belgium
  • Poland
  • Sweden
  • Norway
  • Denmark
  • Turkey
  • UAE
  • Saudi Arabia
  • Qatar
  • Oman
  • Kuwait
  • Bahrain
  • South Africa
  • Egypt
  • Nigeria
  • Australia
  • New Zealand
  • Singapore
  • Malaysia
  • Indonesia
  • Thailand
  • Vietnam
  • South Korea
  • Japan
  • Brazil