Applications of advanced refractory metal products in cancer treatment


HCStarck solutions provides advanced refractory metal products that can be used in cancer treatment. The company offers tungsten and tungsten alloys, tantalum, niobium as well as molybdenum and molybdenum alloys which find applications in the medical sector.

Tungsten and tungsten alloys

HC Starck Solutions’ tungsten alloys are used as essential components in the treatment of cancer with radiation therapy, where radiation protection and precision are required to effectively target and destroy cancer while preserving normal cells. Tungsten incorporates high corrosion resistance with the highest melting point, lowest vapor pressure, and highest tensile strength at temperatures above 1650 ° C of any metal. Its high density and hardness make it ideal for radiation protection. Normally, the absorption of X-rays and gamma radiation are directly proportional to the density of the shielding material. HC Starck Solutions’ tungsten alloys with densities over 50% higher than lead, provide extremely effective shielding and radiation protection, especially in confined spaces.

Tungsten is offered by HCStarck Solutions as an alloy and in pure form as finished machined parts for use in a range of medical technology applications, including x-ray anodes, collimating or “anti-” plates. diffusion “, radiation protection, radioactive source containers and syringes. blankets for injection of radioactive isotopes and radiopaque markers.

Tungsten Alloy Products: 17.0-18.5 grams per cc

Tungsten alloy products include K1700, K1701, K1750, K1800, K1801, K1850

HPM1700, HPM1701, HPM1750, HPM1800, HPM1801 and HPM1850

Molybdenum and molybdenum alloys

The products offered by HCStarck Solutions support the medical industry with very hard and tungsten-like molybdenum products which has one of the highest melting points of all pure elements, making it ideal for use in high temperatures extremely high levels generated inside x-ray tubes. TZM and pure molybdenum based alloys are the materials of choice for rotary anode discs and shaft components of x-ray tubes, where resistance high temperature and creep resistance are highly desirable.

Molybdenum Sheet, Plate Sheet, Billet, Bar and Rod Forging Products:

A wide range of molybdenum and molybdenum alloy grinding products are produced using two main consolidation methods; vacuum arc casting (AC) and powder metallurgy (PM). The availability of products from these two established processes provides users with a number of options in selecting a material to meet their specific application requirements. Grinding products available from either process include the forging of billets, bars, rods, plates, plates and sheets.

Molybdenum products offered include:

  • Low Carbon Pure Molybdenum AC Bar PD-7000
  • PD-7006 Pure Molybdenum AC Bar
  • PD-7001 Molybdenum Alloy TZM PM Sheet 2702
  • PD-7011 Molybdenum Alloy TZM PM Plate 2703
  • PD-7004 Molybdenum Alloy TZM AC Plate 3403
  • PD-7005 Molybdenum Alloy TZM AC Sheet 3402
  • TZM AFBT PD-7021 Molybdenum Alloy AC Forging Billet
  • TZM ABT Molybdenum Alloy PD-7025 AC Bar
  • PD-7031 Molybdenum Alloy P / M TZM PM Billet
  • PD-7043 Molybdenum Alloy ODS Mo-La PM Sheet 2602
  • PD-7044 Molybdenum Alloy ODS Mo-La PM Plate 2603
  • Billet Forging AC AFB-30W Molybdenum Alloy PD-7020
  • Molybdenum Alloy PD-7022 AC AFB Forging Billet
  • Molybdenum Alloy PD-7024 CA Bar AB-30W
  • PD-7008 Molybdenum Alloy PM PBT Bar
  • PM PD-7009 Pure Molybdenum Bar PB
  • PD-7010 Pure Molybdenum PSB PM Billet
  • PD-7029 PP-22-2 Pure Molybdenum Plate
  • PD-7014 Premium Grade PS-100-2 Pure Molybdenum Sheet
  • Pure Molybdenum Sheet PD-7016 Standard Grade PS-300-2
  • PD-7017 F-21-5 Pure Molybdenum Sheet
  • PD-7026 Pure Molybdenum ABL AC Bar Low Carbon
  • ASL AC PD-7028 3202 Low Carbon Pure Molybdenum Sheet
  • PD-7030 Low Carbon 3203 Pure Molybdenum CA APL Plate

Tantalum and Niobium

Tantalum and niobium are well known for their corrosion resistance and are practically inert to chemical attack from most acids. They are ductile materials which are good conductors of heat and electricity. Both of these products are widely used in surgical instruments and implants, as they do not react with bodily fluids, as well as in the chemical and pharmaceutical processing industries. HC Starck Solutions supplies tantalum and niobium in sheet, plate, sheet, rod, tube and wire form, as well as semi-finished and finished parts.

Tantalum products and tantalum alloys:

Tantalum and tantalum alloy products are as follows:

  • Tantalum Alloy PD-7033 NRC Ultra 76 (Ta 2.5% W)
  • PD-7035 NRC Tantalum (UNS R05200)
  • PD-7036 NRC Tantalum Beam Melted Tantalum (ETA) (UNS R05200)
  • Alloy PD-7037 NRC 91 (ta-7%)
  • Tantalum Alloy PD-7041 NRC Ultra 76 (Ta 2.5% W)

HC Starck Solutions products for X-ray technologies

X-ray technology is mainly used in medical imaging for diagnostic purposes. The growth of the medical imaging market, particularly in the field of computed tomography (CT), is driven by the increasing use of CT technology for orthopedic, neuro, pulmonary, cardiac, trauma and pediatric applications, as well as CT angiography, endoscopy, and whole body CT imaging.

A wide range of x-ray tube components are supplied by HCStarck Solutions, including rotary and stationary anodes, cathode cups, screws, custom parts, shafts and bars, and powder materials and anti-scatter plates. or detection for CT scanners. The detector plate assemblies use hundreds of ultra-thin molybdenum or tungsten plates (down to 0.002 “), which HC Starck Solutions manufactures to extremely strict standards for flatness and surface finish.

High-precision X-ray components from HCStarck Solutions ensure optimal imaging results with the least possible exposure for patients. They utilize materials expertise in molybdenum cathode cups, fixed and rotating tungsten screws, shafts and anodes, sensing plate assemblies, and alloys such as TZM. These alloys are designed to provide increased creep resistance at both low and high temperature and to extend tube life.

HCStarck Solutions being involved in both the therapeutic and diagnostic fields, the company is a major player in the development of new technologies and new products. For example, the company’s ability to develop thinner, flatter tungsten heavy metal alloy sheets allowed multi-blade collimators to move from 40-blade machines to 60, 80, and now 120-blade collimators.

HC Starck Solutions product for CT scanners

HCStarck Solutions is working with manufacturers of CT scanners to develop a high creep resistance alloy for rotating anodes. Multi-leaf collimators, when combined with advanced software, are the essential component of the delivery of Intensity Modulated Radiation Therapy (IMRT), which represents the new era of cancer treatment.

The cornerstone of intensity modulated radiotherapy is the linear accelerator. The operation of linear accelerators is well known and X-radiation is generated by accelerating electrons which are extracted from the surface of a heated metal disc.

The energy level of electrons is increased by accelerating electrons through a vacuum chamber at almost the speed of light. These high-energy electrons bombard a tungsten target, causing it to emit x-rays, which are focused through a multi-sheet collimator (MLC), which can hold 60 to 120 sheets of tungsten. The beams are not only shaped by the MLC to match the exact shape of the tumor, they are also used to vary their intensity to cover the spread of energy from 4 to 25 million volts (MV) required for penetrate tumors.

This information was obtained, reviewed and adapted from documents provided by HC Starck Solutions.

For more information on this source, please visit HC Starck Solutions.


Leave A Reply