Tubes

ADVANTAGES

H.C. Starck Solutions offers TA tubing and molybdenum tubes for producing quartz tubing and for quartz melting. Using its extrusion experience, H.C. Starck Solutions fabricates large diameter molybdenum tubing ideal for quartz melting vessels, mandrels and orifice plates.

H.C. Starck Solutions has vast experience in the manufacturing and processing of high performance materials, including molybdenum and their alloys. These advanced materials play a key role in the glass industry’s challenging applications in feeding, melting, homogenizing, and shaping of glass products.

APPLICATION

Chemical Processing Equipment

MARKET SEGMENT

Industrial Processing, Aerospace & Defense, Electronics

MATERIALS

Mo, Mo EBM, Mo30W, TZM, MoLa, Nb, Grain stabil. Nb, Nb EBM, Ta, Ta EBM, NRC, Ultra 76, Ultra 76 Plus, W

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Each quotation will be unique to the customer requirements so please give as much information in the contact form as possible, this will enable us to get the most accurate price back to you.


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Bar / Billet / Forging

ADVANTAGES

The VAC method of consolidation is unique to H.C. Starck Solutions. Materials made by this process is available exclusively from H.C. Starck Solutions and yields a homogeneous product which is very low in residual elements, provides better strength at elevated temperatures and exhibits excellent work-ability, weld-ability and good machining characteristics.

APPLICATION

Feedstock for further processing

MARKET SEGMENT

Industrial Processing, Aerospace & Defense, Electronics, Medical

MATERIALS

Mo, Mo EBM, Mo30W, TZM, Nb, Grain stabil. Nb, Nb EBM, Ta, Ta EBM, NRC76, Ultra 76, Ultra 76 Plus, Ta10W

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Each quotation will be unique to the customer requirements so please give as much information in the contact form as possible, this will enable us to get the most accurate price back to you.


In the vacuum arc-casting process, 99.95% pure molybdenum powder, ultra-pure molybdenum powder or one of our molybdenum-base alloys is pressed, sintered, and melted (all under vacuum) to produce a casting weighing up to one ton. This arc-casting is then further worked by extrusion followed by forging or rolling.

Where highest purity, maximum toughness, and ductility at low temperatures are required, arc-cast molybdenum mill products are available in a special low-carbon grade. This material is 99.97% pure molybdenum and contains a maximum of .010% residual carbon, compared to the nominal .030% maximum carbon content of normal arc-cast molybdenum.

Work-ability and machinability are also superior with this special product.

H.C. Starck Solutions produces a wide range of molybdenum and molybdenum alloy mill products using two primary consolidation methods; vacuum arc-casting (AC) and powder metallurgy (PM). The availability of products from both of these established processes gives users many options in selecting a material to satisfy their specific application requirements. Mill products available from either process include forging billets, bar, rod, sheet, plate and foil.

Molybdenum Products:

Refer to Product Data Sheets for Molybdenum for sizes:

PD-7000 Pure Molybdenum AC Bar Low Carbon
PD-7006 Pure Molybdenum AC Bar
PD-7009 Pure Molybdenum PB PM Bar
PD-7010 Pure Molybdenum PSB PM Billet
PD-7026 Pure Molybdenum ABL AC Bar Low Carbon

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Nozzles

ADVANTAGES

High abrasion resistance due to high strength and hardness. High dimensional intergrity, providing a constant spraying cone. Good thermal shock resistance. Good chemical resistance.

  • high abrasion resistance due to high strength and hardness
  • high dimensional integrity,providing a constant spraying cone
  • good thermal shock resistance
  • good chemical resistance

APPLICATION

Propulsion, High Temperature Processing

MARKET SEGMENT

Aerospace & Defense, Industrial Processing

MATERIALS

C103, Mo, Mo30W, TZM, MoLa, W

For manufacturing and drying of chemical aggressive and/or abrasive materials the ceramic nozzles are preferred, e.g. in the desulfurization of smoke gas, where the ceramic offers a considerable longer lifetime.

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Each quotation will be unique to the customer requirements so please give as much information in the contact form as possible, this will enable us to get the most accurate price back to you.


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Hot Zones

ADVANTAGES

These high temperature materials are characterized by their high thermal and electrical conductivity, low coefficient of thermal expansion, and excellent strength and stability at temperatures above 2,000°C.

APPLICATION

High Temperature Processing

MARKET SEGMENT

Industrial Processing

MATERIALS

Mo30W, MoCu, TZM, MoTi, MoLa, MoW, Ta, EBM Ta, Ulta76, Ultra 76 Plus, TaW, W, WHA

REQUEST A QUOTE

Please fill in the boxes on the contact form and a member of the team will contact you directly for a quotation.

Each quotation will be unique to the customer requirements so please give as much information in the contact form as possible, this will enable us to get the most accurate price back to you.


 

Hot Zones

The furnace industry has seen a remarkable growth in the production of custom-made, high temperature vacuum or controlled (inert) atmosphere furnaces for growing sapphire crystals used in manufacturing of LEDs. These furnaces have unique and demanding hot zone designs for melting alumina in crucibles for precise, highly controlled crystal growth.

The hot zones in sapphire growing furnaces and sapphire annealing/post processing use H.C. Starck Solutions molybdenum and tungsten materials and fabricated products for furnace components and fixtures.

Molybdenum and Tungsten Hot Zones

These high temperature materials are characterized by their high thermal and electrical conductivity, low coefficient of thermal expansion, and excellent strength and stability at temperatures above 2,000°C.

Whether by KY, EFG, CZ, or HEM-like methods (GTAT, CHES, and VHGF) or post processing annealing, H.C. Starck Solutions is well versed in these different sapphire crystal growth and processing methods and supplies engineered product solutions for all technology platforms.

Customer specific furnace components and fixtures for high temperature furnaces are uniquely designed and supplied by H.C. Starck Solutions.

 

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Heating Elements

ADVANTAGES

Our innovative materials improve cycle-time and maintain temperature uniformity with no carbon contamination, less rejection of components, better handling and reduced production cost compared to graphite and ceramics for a wide spectrum of metal injection molding applications. Recrystallization and High-Temperature Warpage Resistance. MoLa alloys have great formability at all grade levels when compared to pure molybdenum in the same condition.

APPLICATION

Heat Management

MARKET SEGMENT

Industrial Processing

MATERIALS

Mo30W, MoCu, TZM, MoTi, MoLa, MoW, Ta, EBM Ta, Ulta76, Ultra 76 Plus, TaW, W, (W, Ni, Fe)

REQUEST A QUOTE

Please fill in the boxes on the contact form and a member of the team will contact you directly for a quotation.

Each quotation will be unique to the customer requirements so please give as much information in the contact form as possible, this will enable us to get the most accurate price back to you.


 

Heating Elements

H.C. Starck Solutions molybdenum is a superior, pure and alloyed refractory material for heat treating medical, aerospace, defense and automotive products in high temperature furnaces that include medical devices, aircraft and aerospace components, nuclear fuel pellet production, and high pulse magnet research applications. Our innovative materials improve cycle-time and maintain temperature uniformity with no carbon contamination, less rejection of components, better handling and reduced production cost compared to graphite and ceramics for a wide spectrum of metal injection molding applications.

For higher temperature heat treating applications such as hardening or brazing, molybdenum is the preferred heating element material. For specialized heat-treating applications above 1,482 °C (2,700 °F), refractory metals such as molybdenum, tantalum or tungsten are good choices. Other processes such as low pressure vacuum carburizing use graphite or silicon carbide elements.

Almost all high-temperature vacuum furnaces are electrically heated. Resistance heating elements are constructed from refractory metals in a variety of styles. Today all high-tech metallurgy technology operates in vacuum atmosphere with high temperatures from 1,150 oC up to 2,800 oC.

Recrystallization and High-Temperature Warpage Resistance

Molybdenum-lanthana (MoLa) alloys are one type of oxide-dispersion strengthened (ODS) molybdenum containing molybdenum and a very fine array of lanthanum trioxide particles. This combination creates extraordinary characteristics of the material, which demonstrate resistance to recrystallization as well as high-temperature warpage. Molybdenum-lanthana is an ideal material for applications requiring dimensional stability and strength at temperatures above the capabilities of either pure molybdenum or molybdenum TZM alloy.

H.C. Starck Solutions manufactures MoLa alloys in three levels of doping with lanthanum trioxide: 0.3 weight %, 0.6 weight % and 1.1 weight %. The trioxide particles stabilize the grain structure of the material creating very beneficial high temperature performance. The unique H.C. Starck Solutions doping process of introducing the oxide particles to the molybdenum matrix is key to the excellent properties obtained, and differentiates H.C. Starck Solutions from other manufacturers of similar materials. In addition, the doping process maximizes the homogeneity of the lanthanum oxide dispersed in the molybdenum matrix.

Benefits of H.C. Starck Solutions MoLa Alloys

MoLa alloys have great formability at all grade levels when compared to pure molybdenum in the same condition. Pure molybdenum recrystallizes at approximately 1,200 °C and becomes very brittle with less than 1 % elongation, which makes it not formable in this condition.

MoLa alloys in plate and sheet forms perform better than pure molybdenum and TZM for high temperature applications. That is above 1,100 °C for molybdenum and above 1,500 °C for TZM. The maximum advisable temperature for MoLa is 1,900 °C, due to the release of lanthana particles from the surface at higher than 1,900 °C temperature.

The “best value” MoLa alloy is the one containing 0.6 wt % lanthana. It exhibits the best combination of properties. Low lanthana MoLa alloy is an equivalent substitute for pure Mo in the temperature range of 1,100 °C – 1,900 °C. The advantages of high lanthana MoLa, like superior creep resistance, are only realized, if the material is recrystallized prior to use at high temperatures.

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Glass Melting Electrodes

ADVANTAGES

Higher energy efficiency, lower capital cost/unit of capacity, more control over applications. Fewer environmental emissions less dependence on radiant heating

APPLICATION

Glass Melting

MARKET SEGMENT

Industrial Processing

MATERIALS

Mo, Mo30W, MoZr02, coated Mo

REQUEST A QUOTE

Please fill in the boxes on the contact form and a member of the team will contact you directly for a quotation.

Each quotation will be unique to the customer requirements so please give as much information in the contact form as possible, this will enable us to get the most accurate price back to you.


 

Glass Melting Electrodes

Superior Products for Critical Glass Operations

To improve the glass industry’s critical applications in melting, homogenizing, feeding and shaping of glass products, H.C. Starck Solutions offers superior products and services:

  • Molybdenum Glass Melting Electrodes (GME)
  • Mo Sheet and Plate for Tank Reinforcement
  • Oxidation Protective Coating
  • Tubular Targets for Large Area Coating
  • Recycling

H.C. Starck Solutions molybdenum glass melting electrodes (GME) provide the industry with superior quality and the highest product standards for efficient glass melting and electric boosted melting. The high temperature strength and rigidity of molybdenum electrodes, plus the inherent electrical properties of molybdenum, provide maximum operating efficiency. The exceptional purity level of H.C. Starck Solutions molybdenum electrodes (99.95 % minimum) achieves outstanding resistance to chemical corrosion, degradation and minimizes detrimental glass discoloring.

We offer a variety of electrodes for the most demanding glass melting processes:

  • Standard and tapered threads including standard metric threads
  • GMEs from 1.25″ (32 mm) to 8″ (203 mm) in diameter
  • Machined or centerless ground surfaces for assurance of concentricity and straightness
  • Custom fabricated top mounted electrodes and bi-metallic
  • Uniform recrystallized grains for creep resistance
  • High purity (99.95 % minimum)
  • Bubble free, low carbon electrodes

Molybdenum is the “BEST” Choice

H.C. Starck Solutions molybdenum is the “best” choice for electric heating in the glass melting process:

  • Excellent strength and stability at temperatures over 2000 °C
  • High thermal and electrical conductivity
  • Low coefficient of thermal expansion (CTE)
  • Resistance to corrosion
  • Minimizes detrimental glass discoloring
  • Good machinability

Traditional and Premium Electrodes

H.C. Starck Solutions offers our high purity molybdenum (Mo) and premium molybdenum-zirconium (MoZrO2) glass melting electrodes. Available coated and uncoated with conventional threads and tapered threads for ease of installation.

Glass Melting Electrode Chemical Characteristics1)

Chemical compositions of molybdenum powders for glass melting electrodes with minimum and maximum limits are as follows:

HIGH PURITY MOLYBDENUM ELECTRODES

Element Standard
Mo min. 99.95 %
C max. 0.005 %
Ca max. 0.003 %
Cu max. 0.002 %
Fe max. 0.005 %
Mg max. 0.001 %
Mn max. 0.001 %
Ni max. 0.0015 %
Sn max. 0.003 %

Mass fraction in %
1) Information on testing methods available upon request.

 

PREMIUM MOLYBDENUM ZIRCONIUM ELECTRODES

Element Standard
Mo (By Difference) min. 98.50 %
Mg max. 0.001 %
Mn max. 0.001 %
Ni max. 0.002 %
Al max. 0.002 %
Cu max. 0.002 %
Pb max. 0.002 %
Ti max. 0.002 %
Ca max. 0.003 %
Si max. 0.003 %
Sn max. 0.003 %
C max. 0.005 %
Fe max. 0.005 %
Cr max. 0.005 %
Zr 1.2-1.4 %

 

Maximum variations from straightness will be 0.030 inch per foot (2.50 mm per meter). Maximum variation in cut lengths will be +1/4“, -0 inch (+6.35 mm, -0 mm).

Special tolerances available upon request.

U.S. and European standard and special threads are available on either or both ends.

GMEs Produced by Powder Metallurgy

H.C. Starck Solutions glass melting electrodes (GME) are manufactured from pure molybdenum and supplied to customer requirements by forging and machining.

Structure 

Glass melting electrodes will normally be shipped as stress relieved. Material can be supplied in the re-crystallized condition upon request.

Dimensional Tolerances
Diameter Diameter Variation Out-of-Round
Inches mm Inches mm Inches mm
1 1/4 31.7 +/- 0.015 ± .38 0.015 0.38
1 1/2 38.1 +/- 0.015 ± .38 0.020 0.51
2 50.8 +/- 0.030 ± .76 0.025 0.63
2 1/2 63.5 +/- 0.030 ± .76 0.025 0.63
3 76.2 +/- 0.040 ± 1.0 0.035 0.89
4 101.6 +/- 0.040 ± 1.0 0.050 1.27

Density

p ≥ 10,2 g/cm³

Structure

The material can be offered as forged.

Ultrasonic Test

All H.C. Starck Solutions Hermsdorf glass melting electrodes (GME) are inspected by ultra-sonic test according to DIN EN 583.

Dimensions and Tolerances

The material can be supplied in the following standard diameters:

  • 32.0 mm (1 ¼“)
  • 50.8 mm (2“)
  • 63.5 mm (2.5“)
  • 76.2 mm (3“)
  • 101.6 mm (4“)
  • 127.0 mm (5“)
  • 152.4 mm (6“)

Tolerances: +/- 0.5 mm in lengths up to 2.5 m. Other diameters are possible according to customer request.

Straightness

Maximum variations from straightness will be 0.030 inch per foot or 1.5 mm / m. Maximum variation in cut lengths will be +1/4”, -0 inch. Special tolerance on request.

Threading

U.S. standard and special threads are available on either or both ends.

Surface Condition

Glass melting electrodes will be supplied with centerless ground or machined surfaces of 128 micro inch or better. Minor surface imperfections may be removed by conditioning while maintaining the dimensional tolerance.

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Furnace Boats

ADVANTAGES

Refractory furnace boats are widely employed to house intermediate or finished goods when they are subjected to high-temperature processes such as annealing and sintering. These containers are engineered for excellent dimensional stability, retaining their shape at ambient and process temperatures with good resistance to creep deformation to ensure long-service over multiple processing cycles in heat treatment applications.

APPLICATION

High Temperature Processing

MARKET SEGMENT

Industrial Processing

MATERIALS

Mo30W, MoCu, TZM, MoTi, MoLa, MoW, Ta, EBM Ta, Ulta76, Ultra 76 Plus, TaW, W, (W, Ni, Fe)

REQUEST A QUOTE

Please fill in the boxes on the contact form and a member of the team will contact you directly for a quotation.

Each quotation will be unique to the customer requirements so please give as much information in the contact form as possible, this will enable us to get the most accurate price back to you.


H.C. Starck Solutions has almost 100 years’ experience in the development of furnace assemblies and components with superb refractory metals and alloys.

H.C. Starck Solutions key materials in furnace boat manufacturing include, but are not limited to:

  • Pure Molybdenum (Mo) and alloys such as arc-cast molybdenum 30% tungsten (Mo30W), molybdenum-lanthanum (MoLa), molybdenum-tungsten (MoW), and titanium-zirconium-molybdenum (TZM).
  • Pure and electron beam melted (EBM) tantalum (Ta) and its alloys such as Ultra 76, Ultra 76 Plus, and tantalum-tungsten (TaW).
  • Tungsten (W).

Refractory Furnace Boats for Thermal Processing

Whether customers are looking to process large components in high-temperature vacuum furnaces, run large-volume production for brazing parts in inert atmosphere furnaces, or anneal highly-regulated end-products to critical specifications, H.C. Starck Solutions can provide value-added product solutions. With a wide choice of refractory metals and technical alloys available for manufacturing furnace boats to custom specifications and geometries, H.C. Starck Solutions can reliably provide containment products for thermal processing in a choice of demanding application areas.

Molybdenum is the material of choice for furnace boat manufacturing, with exceptional retention of its mechanical properties at continuous annealing temperatures exceeding 800°C (1472°F). This applies for various molybdenum alloys, including specialty TZM. H.C. Starck Solutions designs furnace boats to satisfy specific application requirements and can provide novel material solutions with distinct considerations for low adhesion, abrasiveness, chemical cross-reactivity, and more.

If you would like to discuss the fabrication of tailored furnace boats for your furnace application and design, simply contact a member of the H.C. Starck Solutions team today with your query.

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Evaporation Boats

ADVANTAGES

APPLICATION

High Temperature Processing

MARKET SEGMENT

Industrial Processing

MATERIALS

Mo, Mo30W, TZM, MoLa, MoW, Ta, W

REQUEST A QUOTE

Please fill in the boxes on the contact form and a member of the team will contact you directly for a quotation.

Each quotation will be unique to the customer requirements so please give as much information in the contact form as possible, this will enable us to get the most accurate price back to you.


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