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Hastelloy C276 Threaded Rods Manufacturer & Exporter in India

Explore Hastelloy C276 Threaded Rods 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 C276 Threaded Rods?

Hastelloy C276 threaded rods are nickel-molybdenum-chromium alloy fasteners manufactured from UNS N10276 bar stock conforming to ASTM B574. The alloy’s exceptional corrosion resistance stems from its high molybdenum content (15-17%) and tungsten addition (3-4.5%), which together suppress pitting, crevice corrosion, and stress corrosion cracking across a broad range of aggressive chemical environments.

With a PREN exceeding 70, Hastelloy C276 threaded rods outperform all standard stainless steel and duplex grades in oxidising and reducing acid service. These rods are specified under NACE MR0175/ISO 15156 for sour-service process equipment, chemical reactor tie rods, and scrubber column internals where no other commercially available alloy provides equivalent resistance to wet chlorine, ferric chloride, and mixed acid environments.

Quick Specifications

MaterialHastelloy C276
UNS NumberN10276
DIN Number2.4819
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 Strength283 MPa (41 ksi) min
HardnessMax 35 HRC / 241 HB
? All material certified by NABL-accredited laboratory. PMI available on request.

Complete the Fastener Set

Other Hastelloy C276 Fastener Products Available from RealBolt

RealBolt also manufactures the complete Hastelloy C276 fastener range from certified nickel-molybdenum-chromium superalloy bar stock, including Hastelloy C276 Bolts, Hastelloy C276 Nuts, Hastelloy C276 Screws, Hastelloy C276 Washers, and Hastelloy C276 Studs. All Hastelloy C276 fastener types are produced to ASTM with full EN 10204 MTC 3.1/3.2 documentation.
Hastelloy C276 Bolts
Hastelloy C276 Nuts
Hastelloy C276 Screws
Hastelloy C276 Washers
Hastelloy C276 Studs

Technical Data

Hastelloy C276 Threaded Rods Dimensions, Sizes & Thread Standards

Hastelloy C276 Threaded Rods are available in metric M6–M100 and inch ¼″–4″ as standard. Per DIN 975 (full thread rod) / DIN 976 (stud ends) / ISO 888. Custom lengths available. Inch dimensions per ASME B18.31.3. All Hastelloy C276 threaded rods dimensions are verified against applicable DIN, ISO, and ASME

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

Size (M)Pitch (mm)Core Dia (mm)ToleranceMin L (mm)Max L (mm)
M61.04.776g1001000
M81.256.476g1001000
M101.58.166g1002000
M121.759.856g1002000
M162.013.556g1003000
M202.516.936g1003000
M243.020.326g1003000
M303.525.716g2003000
M364.031.096g2003000
M424.536.486g2003000
M485.041.876g2003000
M565.549.256g3003000
M646.056.646g3003000
M726.064.646g3003000
M806.072.646g3003000
M1006.092.646g5003000

Dimensional & Material Standards

StandardCoversThread
DIN 975Fully threaded rod, 1m/2m lengthsMetric
DIN 976-1Stud bolts, metric thread both endsMetric
ISO 888Bolts, screws and studs - lengthsMetric
ASME B18.31.3Continuous threaded rodUNC/UNF
ASME B16.5Stud bolts for pipe flangesUNC
MSS SP-75High-pressure stud boltsUNC
Material StandardRequirement
ASTM B574Bar/rod - UNS N10276
ASTM B619Welded pipe reference alloy
ASTM F468Fastener mechanical properties
NACE MR0175Sour service =35 HRC
EN 10204 3.1Mill test certificate
EN 10204 3.2TPI-witnessed MTC

Material Chemistry

Hastelloy C276 Chemical Composition

Hastelloy C276 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 C276 threaded rods order from RealBolt.

Chemical Composition per ASTM B574

ElementComposition (%)
Nickel (Ni)Balance (approx. 57%)
Molybdenum (Mo)15.0-17.0%
Chromium (Cr)14.5-16.5%
Iron (Fe)4.0-7.0%
Tungsten (W)3.0-4.5%
Cobalt (Co)2.5% max
Manganese (Mn)1.0% max
Carbon (C)0.01% max
Silicon (Si)0.08% max
Vanadium (V)0.35% max
? All heats verified by NABL-accredited spectrometry. PMI available on request.

Why Hastelloy C276 Alloy Composition Matters for Threaded Rods

Mo (15–17%) + W (3–4.5%) — Dual Reducing Acid Resistance
The combined molybdenum and tungsten content gives Hastelloy C276 threaded rods unmatched resistance to reducing acids including hydrochloric, sulfuric, and phosphoric acid. Thread roots — the highest stress concentration points — remain fully protected even in immersed acid service.
Ultra-Low Carbon (0.01% max) — No Sensitisation Risk
The extremely low carbon ceiling eliminates carbide precipitation at grain boundaries during welding or elevated-temperature service. Threaded rods installed in welded assemblies retain full intergranular corrosion resistance without post-weld heat treatment.
Cr (14.5–16.5%) — Oxidising Environment Stability
Chromium provides a stable passive film in mildly oxidising environments and wet chlorine service. Combined with molybdenum, this dual protection mechanism makes C276 threaded rods the standard choice for FGD scrubber tie rods and chlorine-bearing process equipment.

Fastener Performance

Hastelloy C276 Threaded Rods Mechanical Properties & Torque Reference

The table below lists mechanical properties and torque reference for Hastelloy C276 Threaded Rods per ASTM. Hastelloy C276 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 C276 Threaded Rods

Rod SizeDry (Nm)Lubricated (Nm)Clamp Load (kN)
M12725827
M1617514066
M20345276105
M24600480152
M301200960242
M3621001680352
M4233502680485
M4849803984638
?? 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 corrosion risk.

Industry Applications

Hastelloy C276 Threaded Rods Applications — Industries & End Uses

Hastelloy C276 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 C276 threaded rods are the standard tie-rod and column-internals fastener for hydrochloric acid pickling tanks, sulfuric acid dilution vessels, phosphoric acid reactors, and mixed-acid process equipment. The alloy resists both oxidising and reducing acid attack that destroys stainless steel and duplex fasteners within weeks.
FGD scrubber towers, absorber vessels, and ductwork connections subject to wet SO2, HCl, and HF gas streams require threaded rods with PREN 70+ to prevent crevice corrosion under nuts and washers. Hastelloy C276 is the material of choice for FGD tie rods in coal-fired power station scrubbers worldwide.
Threaded rods for subsea manifold tie-down frames, topside chemical injection skids, and sour-service pressure vessel closures are specified in Hastelloy C276 per NACE MR0175/ISO 15156. The alloy’s resistance to H2S stress corrosion cracking and chloride pitting makes it the preferred choice over duplex stainless in high-H2S wells.
Reactor vessel tie rods, filter press frame rods, and autoclave closure studs in pharmaceutical manufacturing require materials that withstand aggressive CIP/SIP cleaning agents including hot caustic, peracetic acid, and chlorinated sanitisers. Hastelloy C276 threaded rods meet FDA and cGMP material traceability requirements.

Hastelloy C276 Threaded Rods Standards & International Certifications

Hastelloy C276 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 C276 Threaded Rods from India's Leading Manufacturer — Get a Competitive Quote Today

Partner with RealBolt — India’s leading manufacturer of certified Hastelloy C276 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.
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Answers for Buyers

Hastelloy C276 Threaded Rods — Frequently Asked Questions

Browse expert answers to common questions about Hastelloy C276 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 C276 threaded rods selection and pricing.
Hastelloy C276 threaded rods are manufactured from bar stock conforming to ASTM B574 (UNS N10276). Dimensional standards for metric rods are DIN 975 (fully threaded) and DIN 976-1 (stud ends). Inch-series rods are produced per ASME B18.31.3. Flange stud applications follow ASME B16.5 or MSS SP-75. All material is supplied with EN 10204 3.1 mill test certificates as standard, with 3.2 TPI-witnessed certification available on request.
Yes – Hastelloy C276 is one of the few commercially available alloys with proven resistance to hydrochloric acid across a wide concentration and temperature range. At ambient temperature, C276 threaded rods resist all concentrations of HCl. At elevated temperatures, the alloy outperforms all stainless steel and duplex grades. Corrosion rates below 0.1 mm/year are achievable in 10% HCl at 60°C – conditions that cause rapid failure in 316L and even 904L stainless steel fasteners.
In oxidising atmospheres, Hastelloy C276 threaded rods can be used continuously to 1038°C. In reducing or mixed gas environments, the practical limit is 760°C due to the risk of sigma phase precipitation above this temperature, which can reduce ductility. For applications above 500°C, consult our engineering team regarding heat treatment condition and expected service life. For cryogenic applications, C276 retains excellent toughness down to -196°C.
Yes – Hastelloy C276 (UNS N10276) is listed in NACE MR0175/ISO 15156-3 Table A.3 for use in sour oil and gas service. Threaded rods must be supplied in the solution-annealed condition with hardness not exceeding 35 HRC. Our rods are routinely supplied with hardness survey reports for sour-service projects. NACE-compliant nuts (UNS N10276 or compatible alloy) are available as matched sets with a single MTC covering the complete assembly.

Industrial Cities We Serve:

  • Ahmedabad
  • Aurangabad
  • Bengaluru
  • Chennai
  • Coimbatore
  • Faridabad
  • Gandhidham
  • Greater Noida
  • Gurugram
  • Hazira
  • Hosur
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  • Jamnagar
  • Jamshedpur
  • Ludhiana
  • Mumbai
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  • Nagpur
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  • US
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