MP35N® Alloy: Properties & Applications

MP35N® alloy is a unique multiphase system that combines the highly desired chemical and mechanical properties of its constituent elements: Nickel (Ni), cobalt (Co), chromium (Cr), and molybdenum (Mo). The result is a high-performance alloyed system that is much more than the sum of its parts. Providing an enviable mix of ductility and strength alongside exceptional corrosion-resistant characteristics, MP35N® is routinely employed in some of the toughest application areas in modern engineering.

Over the years, H.C. Starck Solutions has built a reputation for delivering world-class engineered products for key market segments. This requires a unique understanding of the demands placed upon critical materials in specific working environments, to provide the right materials for the job. Among these is MP35N® alloy system, with an extremely attractive manifold of physicochemical properties for an array of applications.

This article will explore the properties and applications of MP35N® alloy in greater depth.

What is MP35N® Alloy?

MP35N® is a complex, high-performance, multiphase alloy system that is generated via vacuum induction melting and vacuum arc re-melting (VIM-VAR) where elements have nominal concentrations of: 35% nickel; 35% cobalt; 20% chromium; and 10% molybdenum.  Such high concentrations of alloy additions could now be considered as a high entropy alloy system. After melting, the alloy can then be work-hardened and aged to improve its tensile strength without greatly compromising its ductility.

Despite its exceptional mechanical characteristics, MP35N® alloy is fabricated and is available from H.C. Starck Solutions in rolled plate, sheet, and foil configurations as well as machined part.

MP35N® Properties: Ductile, Strong & Corrosion-Resistant

Depending on the production process, MP35N® alloy can be manufactured for variable yet specific tensile and yield strengths across an exceptionally high range (1790 – 2070 MPa). We find that minimum strength(860 MPa) is most commonly achieved in the hot rolled/annealed condition while maximum values are attained through cold working and aging. A similar linearity is observed in the alloy’s hardness, increasing from approximately Rockwell C7 to Rockwell C50.

The corrosion-resistant properties of MP35N® alloy system are principally determined by its alloying composition. All four alloying elements impart enhanced corrosion-resistant properties, preventing oxidation, pitting, sulfidation, and other complex forms of chemical attack. Combining these superior characteristics with the aforementioned mechanical performance also provides outstanding resistance to dynamic modes of failure, such as hydrogen embrittlement and stress corrosion cracking (SCC) while maintaining mechanical properties at cryogenic temperatures.

Applications for MP35N® Alloys

This excellent combination of chemical and mechanical characteristics makes MP35N® alloys ideal for a wide range of application areas. At H.C. Starck Solutions, we routinely provide flat-rolled MP35N® products for aerospace and aviation; chemical processing; cryogenic research; marine engineering; oil and gas; prosthetic manufacturing and orthodontics; spring applications in severe enviroments, and many more.

If you need a high-performance alloy system for your application and are considering MP35N® alloy products, why not contact a member of the H.C. Starck sales team today? We will happily answer any questions you may have and help find a solution that fits your specifications.

*MP35N® is a registered trademark of SPS Technologies, LLC.

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H.C. Starck Solutions Exhibits at FPD China

FPD China is one of the world’s largest conferences and expositions for experts in the consumer display and touch screen manufacturing chain. Bringing together a host of industry experts from around the world, FPD China aims to provide a platform for developers, manufacturers, and researchers to learn about the latest and greatest innovations in consumer electronics.

A welcome reprieve from the numerous tradeshow cancellations that have occurred during 2020 due to the ongoing COVID-19 pandemic, FPD China will be going ahead this year with robust epidemic prevention procedures in place. H.C. Starck Solutions is happy to announce that we will be attending and exhibiting at FPD China this year, sharing our knowledge in a safe and healthy exhibition environment.

FPD China: Safe & Healthy Tradeshow Experience

Co-organized by the world-renowned SEMI and CECC groups, FPD China has a thirteen-year history of strategic cooperation with domestic and international partners in the display and touch screen space. Following strict control and prevention guidelines, in cooperation with the State Council and in accordance with the Shanghai exhibition industry guide to COVID-19, FPD China can happily proceed this year, welcoming the regular crowds with a few precautionary changes.

With temperature checks, mandatory masks, and social distancing measures, FPD China is set to reinvigorate the tradeshow circuit of 2020 for professionals in the display and touch screen sector. At H.C. Starck Solutions, we could not be more excited to meet like-minded professionals in a safe and reliable environment over the weekend of June 27th – 29th. If you are thinking of attending FPD China and would like to speak with a member of the H.C. Starck Solutions team, contact us today to book a time slot. Or, simply come down to booth #E1567 in Hall E1 and we will make some time for you.

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History of the Euclid Plant: Tungsten Alloy and Molybdenum Flat Product Expertise

This year, H.C. Starck Solutions is celebrating the centennial of our global company by highlighting the efforts of individual plants and facilities across the world. We have already explored the importance of our Newton plant in Massachusetts and the Hermsdorf facility in Germany, sharing some of their core competencies and highlights throughout their unique history.

This month, we are looking into the history of our Euclid facility in Ohio, which is renowned for its tungsten and space-age refractory metals. In fact, our Euclid plant was built during one of the most exciting technological eras mankind has ever experienced: the space race.

A Brief History of the Euclid Plant

After the USSR launched Sputnik in 1957 and sent a man into orbit just four years later, the US President, John F. Kennedy, announced an ambitious initiative: the USA was going to put a man on the moon. This extraordinary objective motivated the creation of a flat-rolled refractory metal plant on Tungsten Road in Euclid, Ohio.  For over fifty-five years, the Euclid plant has been engineering and delivering superior refractory metals and tungsten alloys for a wide range of critical objectives.

The Euclid plant has changed ownership several times over the years. In 1961 the plant was established by the General Electric Company (GE), who capitalized on their rich process knowledge in molybdenum and tungsten in lamp wire for developing a robust production line in supplying flat-rolled plate, sheet, and foils of refractory metals.   Projected growth of tungsten did not occur and resulted in GE’s divestiture, as molybdenum applications for vacuum furnaces surpassed tungsten sheet demand.

American Metal Climax Company, otherwise known as AMAX with a plant in Coldwater Michigan, purchased this facility in 1972 and consolidated all the flat rolled product into the Euclid Plant.  This yielded tangible dividends to AMAX. In the ‘80s, sales of molybdenum sheets grew with new applications for thermal management in electronics and new materials such as  copper and nickel clad molybdenum.

After years of success, AMAX merged with a company known as Cyprus, and in 1995 Euclid, Latrobe, West Horndon and Coldwater sites were purchased by Key Equity Capital and renamed CSM Industries. Shortly thereafter the firms Moly-Press and Kulite were purchased and expanded industrial capability, capacity and experience, including tungsten heavy alloys.

H.C. Starck purchased CSM Industries with all its assets in 2000. This was during our concerted push to support growing advanced electronics applications including refractory metal based sputtering targets for flat panel display manufacturing.

In 2007, the Latrobe and Kulite facilities were consolidated in Euclid.  This expanded the Euclid capabilities to include the manufacturing of tungsten heavy alloys and complex machining.

Euclid, Ohio Today Under H.C. Starck Solutions

In 2020, the Euclid site continues to produce flat-rolled plate, sheet, and foil from molybdenum and tungsten and alloys. AS9100 Aerospace certification allows the Euclid site to be a valued supplier of tungsten heavy alloy parts for critical aerospace and defense applications.  With additional fabrication and machining operations, we can provide significant added-value to our customers through novel products and solutions. If you would like to learn more about our site, or any other facility covered in the 100 Years of Refractory Metals Expertise celebration, simply contact a member of the H.C. Starck Solutions team today.

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Position Summary

We are currently sourcing candidates for an HSE Manager in our Newton, MA facility. The HSE Manager will direct, coordinate and develop programs and procedures to ensure compliance with local, state, and federal laws that govern health, safety, environmental, and relate issues.

Essential Functions & Responsibilities

  • Manages health, safety, security, and environmental programs, procedures and compliance to include permits, plans, procedures, programs, audits, studies, and support of Worker’s Compensation.
  • Creates and tracks changes to Federal, State, and Local Laws; as well as regulations relating to HSE as they may impact operations including performing due diligence for growth and acquisitions or divestitures.
  • Completes intra-company audits and evaluates results with peers throughout North American operations.
  • Oversee the completion of safety trainings at the site with respect to regulatory compliance.
  • Leads and assists safety teams to accomplish goals consistent with production objectives and the Site HSE Policy and HSE system(s).
  • Maintains OSHA logs and prepares required reports, such as: injury reports, Worker’s Compensation reports, return-to-work plans, and risk management programs.
  • Investigates incidents, analyzes data, identifies trends, and develops corrective measures in order to identify risk reduction and corrective actions across the site and the organization.
  • Advises all levels of the organization regarding HSE topics (i.e. accident prevention, improving safety, safety culture assessments, trainings, compliance, and corrective actions to alleviate unsafe conditions or procedures).
  • Coordinates risk management programs.
  • Prepares and maintains reports as required to various governmental agencies and corporate management to demonstrate compliance or performance for all applicable environmental and safety certifications and regulations.
  • Introduces new and innovative concepts to assure continuous improvement in areas of health, safety and environmental.
  • Coordinates with outside organizations, i.e. fire department, OSHA, DEP, EPA, and MWRA.
  • Conducts weekly, monthly, quarterly, and annual inspections for health, safety, EPA (RCRA, storm water, SPCC, eyewash stations) and fire safety.
  • Performs compliance testing for air and water pollution.
  • Establishes and maintains relationships with local safety forces and medical community.
  • Monitors and/or manages employee work physicals, testing, injury follow-up and Worker’s Compensation claims.
  • Institutes employee wellness programs.
  • Administers the safety supplies and PPE program for employees.
  • Maintains first aid medical supplies for the dispensary and provides First Aid assistance as needed.
  • Maintains/manages Enviance, LMS, and SharePoint online systems.
  • Works with departments as needed to support continuous improvement activities as related to health, safety, and environmental.
  • Leads department activities including, but not limited to, budget spending, hiring, motivating, training and performance management.
  • Coordinates the response to customer complaints by working with site personnel to ensure thorough and timely initiation, disposition, verification, and closure of complaints.

Required Experience & Qualifications

  • Bachelor’s degree in Science, Engineering, Safety, and/or Environmental discipline.
  • 10 years HSE experience in a manufacturing environment.
  • Ability to communicate proficiently both orally and in writing using the English language.
  • This position may require the applicant to be licensed under certain United States laws and regulations.
  • Preferred Certified Safety Professional (CSP) designation, and familiarity with Federal, State, and local Safety, Health, and Environmental regulatory knowledge.
  • Competencies: Customer orientation, analytical thinking, team leadership, taking initiative, effective communication, influencing others, organizing and planning.

To Apply for this Position

H.C. Starck offers a highly competitive compensation along with excellent benefits, including Medical, Dental, Vision, 401(k) with company match. Please email your resume to and

H.C. Starck Solutions is an Equal Opportunity Employer supporting diversity in all our business practices.

Download the full job specification here

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High-Temperature Alloys Used in Furnace Design

Thermal processing is a critical step in the preparation of an enormous range of finished and intermediate goods, including automobile parts, aerospace, electronics, oil and gas, even pharmaceuticals. Few final products make it to market without having undergone some level of heat treatment during the development and manufacturing chain. General-purpose and specialized furnaces are now so ubiquitous that thermal processes arguably form the bedrock of industrial-scale manufacturing worldwide.

High-temperature alloys are essential to the plethora of furnace designs and heat treatment techniques that manufacturers now enjoy. Whether they are employed directly in furnace assemblies – from hot zones to the outer shell – or used as supplementary parts like boats, trays and carriers, high-temperature alloys provide superior mechanical properties at severe operating temperatures.

Which High Temp Alloys are Best Suited for Furnaces?

Refractories like molybdenum (Mo), niobium (Nb), tantalum (Ta), and tungsten (W) offer superb temperature performance, retaining their characteristic mechanical qualities at temperatures exceeding 1000°C. These may be used in their pure formats in select instances, for example, electron beam melted (EBM) tantalum rods are often used for heating elements in hot zones with operating temperatures exceeding 1482°C. However, tantalum heating elements must be accompanied by tantalum-based shielding to prevent chemical contamination. Such a configuration cannot be used in a hydrogen atmosphere either.

This dynamic is typical of the furnace design process. Engineers must carefully balance thermodynamic stability with high-temperature performance and an array of additional performance parameters specific to various user objectives. Continuing with the example of heating elements; tungsten heater coils are ideal for extremely high thermal processes with the greatest melting point of the refractory metals group, but it should not be used in air atmospheres.

There is no simple answer to the question, which high-temperature alloys are best suited for furnace design, as the requirements of modern thermal processing are vast. The only correct response is to carefully diagnose the right alloy for the job on a bespoke basis.

High-Temperature Alloys from H.C. Starck Solutions

At H.C. Starck Solutions, we are committed to design and manufacturing excellence and enduring research and development (R&D) into product innovation. Our high-temperature alloys are comprised of high purity refractories with carefully selected additives to yield the greatest performance for specific user objectives. We design and supply furnace components and accessories to users in a broad market cross-section, leveraging our unprecedented refractory metals expertise in the fabrication of boats, furnace assemblies and racks, heating elements and shields, hot zones and more.

Though pure refractories are often employed in hot zones, insulation, and shielding, we offer a wide range of high-temperature alloys based on molybdenum, which can be utilized throughout various furnace types. These include:

  • Titanium-zirconium-molybdenum (TZM): With elevated strength and outstanding creep-resistant properties at high temperatures, TZM alloys can be used for various items of kiln furniture, including brackets and heating elements.
  • Molybdenum-tungsten (MoW): High-density MoW components are ideal for molten metal applications, specifically non-ferrous melts such as zinc.
  • Molybdenum-hafnium-carbide (MHC): With exceptional all-round thermodynamic properties, MHC is typically reserved for extrusion dies.
  • Molybdenum-lanthanum (MoLa): An oxide-dispersion strengthened high-temperature refractory alloy exploited for its outstanding dimensional stability and high strength characteristics for various fabrications in furnace design.

Engineers always have to be very careful when designing specific  furnace elements from refractory and non-refractory metals. The difference between the two is that refractories are not inhibited by the poor thermodynamic and chemical properties of non-refractories, hence their general superiority. Yet it is always important to compare the most important characteristics of each to determine the right metals for individual jobs.

If you have specific user parameters that you are working towards and would like to speak with an H.C. Starck Solutions representative about specific heat treatment solutions, simply contact us today. We are happy to field questions about our high-temperature alloys and customer-first services. 

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Decades of Innovative Tantalum Sputtering Processes

At H.C. Starck Solutions, we are currently celebrating 100 years since our company first charted a course to become the world’s leading supplier of refractory metals like tantalum (Ta). Consistently expanding through investment in new global premises and leading technologies, we are now confidently one of the foremost metallurgical experts on the planet.

We have been successful in embedding ourselves in true growth markets with critical intermediate products throughout the years. As a result, we now supply core technologies for growing, multi-billion dollar industries that were barely in their infancy when H.C. Starck was first founded. Tantalum sputtering targets for the booming semiconductor industry, for instance, are a key part of our product catalog.

A Brief History of our Semiconductor Expertise

Valued in excess of $400 billion, the global semiconductor market is the primary driving force for technological growth. It directly fuels billions of dollars in the electronics market, forming the backbone of most consumer devices, numerous sensing arrays, various energy generation technologies, and much more.


Silicon chip manufacturing is the core technology of the semiconductor market where integrated circuits – or ICs – are engineered with feature sizes on the nanoscale. Optimising the conduction of electrons between nanometre-scale features and components is key. Copper is often used in logic chips and DRAMs for this very purpose, however, copper atoms are active and will diffuse into materials under electrical fields.

Unlike copper (Cu), tantalum atoms do not diffuse into materials under applied electrical fields. This process, known as electromigration, could introduce flaws into ICs which would contribute to product failure. High-purity tantalum and tantalum nitrides can be grown on top of copper layers to prevent electromigration of copper atoms and preserve the long-term reliability of semiconductor devices. This is typically carried out via physical vapor deposition (PVD), where vapor-phase material is selectively deposited on a silicon substrate under vacuum conditions.

We entered into the sputtering target trade in 1999, shortly after copper was first introduced into the manufacturing process. Our expertise in materials research and development – focussing on tantalum and other refractory metals – gave us a unique opportunity to impact semiconductor manufacturing in a tangible way. In the early 2000s, we became one of the first qualified suppliers of tantalum blanks for sputtering targets.

Our Tantalum Sputtering Targets Today

Our stature in the semiconductor industry has only grown since those early successes. Through numerous product development cycles and experimentation, we have generated sputter targets with various purities, grain size, and crystallographic texture to meet changing customer demands. With state of the art high-vacuum electron-beam melting (HV-EBM) and thermomechanical processing, we can now precisely control tantalum impurity levels to the sub-parts-per million (ppm) range and grain sizes on the order of micrometers (μm).

Working with worldwide strategic partners, our tantalum sputtering targets are used in all major semiconductor processing chains, providing best-in-class performance and lowest cost of ownership. Each year, we produce and ship thousands of tantalum blanks, capturing about half of the total worldwide demands.

Check back on our 100 Years of Refractory Metals Expertise page to learn more about our centennial celebration or contact us for more information about our tantalum sputtering expertise.

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