Logo
ProductsAbout UsCapabilitiesServicesIndustryInvestorsBlogsCareersContact

Super Alloys

Hastelloy C-276

Widely regarded as the most versatile corrosion-resistant alloy in existence, Hastelloy C-276 provides an impenetrable barrier against aggressive chlorides, solvents, and sour gas.

Home Banner
Mobile Banner

High-performance corrosion-resistant alloy engineered for aggressive and mixed chemical environments.

Ideal for harsh chemical media including strong oxidizers, chlorides, and reducing acids. Trusted across pulp, paper, power, and process industries.

Ingot Manufacturing Process

RFQ from Customer

Alloy chemistry and ingot specifications are finalized as per application requirements.

Alloy Design/Planning

As per customer requirement mould design carried out and planned for charge preparation, charge sequences in VIM furnace. Careful selection of raw materials are the prime factor to achieve specified chemistry of an alloy.

Alloy Melting by VIM

Virgin elements are charged into the VIM furnace either in air or under vacuum, with precise adjustments made for trace element additions during melting.

Process & Quality Control

The melt is poured under vacuum into precision-engineered molds using an automatic tilting mechanism for defect-free solidification.

Primary Finishing

Post-casting processes include surface treatment, cropping, and preparation of ingots for downstream processing.

Testing & Packaging

Every batch is tested for chemical composition by Spark- OES / wet analysis / Gas analysis, and physical compliance as per customer specification before secure packaging.

Technical Specifications

Standard: UNS N10276

ElementMin (Wt%)Max (Wt%)
Carbon0.000.008
Silicon0.000.06
Manganese0.000.75
Phosphorous0.000.020
Sulphur0.000.008
Chromium15.0016.50
Molybdenum15.0017.00
Tungsten3.504.50
Vanadium0.000.30
Cobalt0.002.00
NickelBalance-

Gaseous Impurities

ElementComposition (PPM)
O<25
N<50
H<3

Properties

Excellent resistance to both oxidizing and reducing agents, chlorides, wet chlorine gas, and sulfuric environments—ideal for welds and complex assemblies.

AlloyMechanical properties*PML alloy: as cast*After Heat Treatment
PML Hastelloy C-276   
 Rockwell Hardness (HRB)160 - 240-
 Ultimate Tensile Strength (UTS)495 MPa790 MPa
 Yield Strength (YS)275415 MPa
 Elongation Break-62%
 Reduction of Area--

*Typical values- Mechanical properties of superalloy varies as per the heat treatment cycle.

Image Text Section

The Unrivaled Champion of Chemical Resilience

Widely regarded as the most versatile corrosion-resistant material in existence, Hastelloy C-276 provides an impenetrable barrier against aggressive chlorides, solvents, and sour gas in the world's most volatile industrial environments.

Process Capability

Input: Batch SizeOutputAlloying ElementsChemistry ToleranceImpurities Max
25 kg to 80 kgIngot of required shapeCr, Mo, W, Fe±0.5% for high-level (2-digit) elements
±0.3% for low-level (1-digit) elements
Oxygen < 50 ppm
Hydrogen < 10 ppm
Nitrogen < 100 ppm
All others < 50 ppm

Applications

PML-manufactured C-276 ingots are ideal for

1

Digesters and bleach plants (paper industry)

2

Sour gas applications

3

Flue gas desulfurization units

4

Heat exchangers and evaporators in sulfuric acid service

5

Reactors, condensers, filters, and mixers in chemical plants

6

Organic chloride processing and acid catalyst systems

Trust, Reliability & Quality

With over six decades of expertise, PML delivers high-performance component technologies and precision solutions trusted across critical industries.

ISO 45001

ISO 45001

Occupational Health and Safety (OH&S) management systems

ISO 14001

ISO 14001

Environmental Management Systems (EMS)

ISO 9001

ISO 9001

Quality Management Systems (QMS)

IATF 16949

IATF 16949

International Standard for Automotive Management Systems

AS 9100

AS 9100

Aerospace Quality Management System (QMS)

Frequently Asked Questions

It's used in extreme chemical environments, including sour gas, sulfuric acid systems, chlorides, bleach plants, and acid catalyst equipment.

Related Products

Inconel 625

Inconel 625

Rely on PML IN625 superalloy for exceptional heat and corrosion resistance across demanding environments.

Inconel 713C

Inconel 713C

Rely on PML IN713C superalloy for exceptional heat and corrosion resistance across demanding environments.

Inconel 718

Inconel 718

Rely on PML IN718 superalloy for exceptional heat and corrosion resistance across demanding environments.

 Hastelloy C-22

Hastelloy C-22

Rely on PML Hastelloy C-22 superalloy for exceptional heat and corrosion resistance across demanding environments.

Inconel 825

Inconel 825

Rely on PML IN825 superalloy for exceptional heat and corrosion resistance across demanding environments.

Request a Quote

Pioneering cutting-edge technology to develop reliable, high-performance magnetic components and engineering solutions.