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Hastelloy C-4 Plates, Sheets, Bars & Pipes – UNS N06455

Hastelloy C-4 (UNS N06455) – Stockist, Supplier and Processor in Mumbai Since 1992

Hastelloy C-4 (UNS N06455, W.Nr 2.4610) is a nickel-chromium-molybdenum alloy with very low carbon and silicon and a small titanium addition, developed for outstanding high-temperature stability. It resists the formation of grain-boundary precipitates in the 650–1040 °C range, so it keeps its ductility and corrosion resistance after welding, stress relief or other thermal exposure. As a stockist, supplier and processor in Mumbai since 1992, Ganesh Metals supplies C-4 plate, sheet and strip to ASTM B575 / ASME SB575, bar to ASTM B574, seamless pipe to ASTM B622, welded pipe to B619 and welded tube to B626, with EN 10204 3.1 MTCs and heat-number traceability.

C-4 is the C-family alloy for fabrications that will see heat after welding, for example parts that must be stress-relieved, hot-formed or used at intermediate temperatures. Its general corrosion resistance is broadly similar to C276, but its stability is better. If thermal history is not a concern, C276 or C22 may be easier to source; we will advise.

Why Choose Hastelloy C-4?

Hastelloy C-4 resists hot contaminated mineral acids, chlorides, organic acids and solvents, and keeps its properties after thermal exposure that would sensitise other alloys. It is weldable by common methods and retains ductility in the heat-affected zone.

Applications:

Hastelloy C-4 is used where corrosion resistance must survive welding, stress relief or service heat.

  • Chemical Processing: Vessels and piping for hot mineral acids where fabrication involves heat treatment.

  • Pharma Equipment: Reactors and parts that must stay corrosion resistant after repeated heat cycles.

  • Pollution Control: Flue-gas scrubber components exposed to hot acid condensates and chlorides.

  • Heat Exchangers: Plates and tubes operating at intermediate temperatures in corrosive service.

  • Oil & Gas: Hot sour-service components where thermal stability and pitting resistance are needed.

C-4 is mostly ordered as plate and sheet for fabrications that will be heat-treated, with bar for machined parts and B622 or B619 pipe for hot lines. Flanges and fittings on enquiry; sizes on request.

Hastelloy C-4: Specs, Sizes & Equivalents

Hastelloy C-4 is less common than C276, so we confirm mill origin, certification and availability for every enquiry before quoting. Supplied material keeps its mill markings and heat number, and SEZ consignments are packed in wooden boxes with dispatch identification letters.

Hastelloy C-4: ASTM / ASME Specifications by Form

  • Plate, Sheet & Strip: ASTM B575 / ASME SB575

  • Bar & Rod: ASTM B574 / ASME SB574. Seamless Pipe & Tube: ASTM B622. Welded Pipe: ASTM B619. Welded Tube: B626.

  • Fittings: ASTM B366 where specified. Forgings & flanges: ASTM B564. Equivalent EN/DIN 2.4610 on request.

Typical Hastelloy C-4 Chemistry & Properties

  • Typical: Cr 14–18, Mo 14–17, Ti ≤ 0.7%

  • Typical: Fe ≤ 3%, C ≤ 0.01%, Si ≤ 0.08%, nickel balance; density about 8.64 g/cm³; high thermal stability.

  • Typical: resists sensitisation from 650–1040 °C, keeping ductility and corrosion resistance after welding.

FAQ: Why choose Hastelloy C-4 over Hastelloy C276?

  • For better stability after heat exposure.

  • Q: Which spec covers Hastelloy C-4 plate? A: ASTM B575 / ASME SB575, supplied with an EN 10204 3.1 mill test certificate.

  • Q: Is C-4 readily available? A: Less so than C276; availability and lead time are confirmed for each enquiry.

Hastelloy C-4 Equivalent Grades & FAQ

  • Equivalents: W.Nr 2.4610 · NiMo16Cr16Ti · C-4

  • Q: Can C-4 be welded and stress-relieved? A: Yes, that is its strength; follow your code's procedures.

  • Q: What affects Hastelloy C-4 price in India? A: Hastelloy C-4 pricing moves with nickel, chromium and molybdenum market levels, the form you need (plate, sheet, bar or pipe), thickness or diameter, quantity and whether the material is cut to size. An EN 10204 3.1 MTC with heat-number traceability is included. Send your size and quantity for a current quote.

  • Enquire for Hastelloy C-4: call +91 99872 73700 or email sales@ganeshmetals.com with form, size and quantity.

Related forms: see Hastelloy sheet & plate and Hastelloy pipe & tube. Related grades include Hastelloy C276 and Hastelloy C22.

Hastelloy C-4 Datasheet (UNS N06455)

Chemical composition (ASTM B575, UNS N06455, %): Nickel balance; Chromium 14.0–18.0; Molybdenum 14.0–17.0; Iron 3.0 max; Cobalt 2.0 max; Titanium 0.70 max; Manganese 1.0 max; Carbon 0.015 max; Silicon 0.08 max; Phosphorus 0.04 max; Sulphur 0.03 max.

Physical properties: density 8.64 g/cm³; melting range about 1335–1380 °C; non-magnetic. Mechanical properties (ASTM B575 plate and sheet, annealed, minimum): tensile strength 690 MPa (100 ksi); 0.2% yield strength 276 MPa (40 ksi); elongation 40%.

Equivalents: UNS N06455; W.Nr 2.4610; DIN NiMo16Cr16Ti. Forms we supply: plate, sheet, round bar, pipe and tube, with an EN 10204 3.1 mill test certificate.

Is Hastelloy C-4 magnetic? No, it is non-magnetic in the annealed condition.

How do I work out the weight of a C-4 plate? Length (m) × width (m) × thickness (mm) × 8.64 gives the weight in kg. You can also use our metal weight calculator. To estimate the weight of Hastelloy C-4 sheet, plate, bar or pipe before you order, use our free metal weight calculator.

Which certificate comes with C-4? An EN 10204 3.1 mill test certificate with heat-number traceability.

Certified Hastelloy C-4 Supply

Every Hastelloy C-4 order from Ganesh Metals ships with full documentation:

  • ISO 9001/14001/45001

  • MTC to EN 10204 3.1 with heat-number traceability

  • ASTM B575 / B574 / B622 compliance

Hastelloy C-4 Forms

  • Sheets & Plates

  • Strip & Pieces

  • Round Bars & Rods

  • Flanges

  • Pipes & Tubes

  • Fittings & Forgings

Why Ganesh Metals?

  • Stockist, supplier and processor in Mumbai since 1992

  • PMI-verified Hastelloy C-4 with original mill markings

  • Sizes on request – send Hastelloy C-4 form, size & quantity for a quote

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GANESH METALS

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➤ Hastelloy C22
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➤ Hastelloy C-4

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➤ Nickel 200 / 201
➤ Nimonic 80A

GET IN TOUCH
Mahendra Prajapati
📍 Shop Number 12, Sant Sena Maharaj Marg,
2nd Kumbharwada, Mumbai – 400004
📞 +91 99872 73700
📧 sales@ganeshmetals.com
📧 ganeshmetal2372@gmail.com

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