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Radiation Shielding Glass RD 30®

Monolithic X-Ray Protection Glass

Special Properties

  • Monolithic glass with lead equivalent ≥ 0,5 mm Pb
  • Protection against X-ray and gamma radiation
  • Non-flammable
  • More scratch resistant than acrylic
  • High optical transmission and clarity
  • Larger glass dimensions possible
  • Holes and recesses with freely defined dimensions are possible
  • Can be ground and polished to a custom thickness

Typical Applications

  • Protective sight glass window with effective shielding of X-ray and gamma radiation
  • Radiation shielding glass for mammography devices
  • Medical X-ray equipment and -rooms
  • Protection glass window for irradiation applications
  • Dental radiological applications
  • Viewports in radiological room doors
  • Radiation protection for material testing applications
  • Nuclear applications in high-energy physics
  • Shielding glass for glove boxes
  • Radiation protection viewing window in medical areas

Related glass types and information

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Radiation shielding glass protects against harmful radiation in medical and scientific applications

RD 30® high-quality radiation shielding glass is a drawn lead-containing flat glass product that protects against gamma and X-ray radiation. Such radiation is often found in medical technology for diagnostic purposes or in medical radiation therapy. Also, material testing is done with the help of X-rays. Since these types of radiation have a high potential to be harmful to health, the unintentional radiation exposure must be prevented. Hence, transparent openings of medical devices, sight glasses, or viewing windows in doors to radiation areas are protected with radiation shielding glass for safety reasons.

RD 30® glass from SCHOTT is the only radiation shielding glass product manufactured in Germany. It is an ideal and proven solution for transparent radiation shielding tasks. RD 30® is a monolithic X-ray shielding glass that contains lead oxide that provides a lead equivalent of ≥ 0.5 mm Pb at 56 kV (see table). The lead equivalent is a measure of the protective effect of radiation shielding glass. It is indicated either in mm Pb or as a percentage of the glass thickness equal to pure lead.

SCHOTT developed RD 30® glass explicitly for medical areas with lower X-ray radiation like mammography workplaces. However, even with tube voltages of up to 150 kV, RD 30® has a lead equivalent of ≥ 0.5 mm Pb. Hence, it is often used for industrial material testing equipment and scientific nuclear applications.

To ensure the durable and safe function of leaded radiation shielding glass materials, be sure to read and follow the installation, cleaning, and maintenance instructions. If you are looking for a radiation shielding glass product with a higher lead equivalent, i.e., with increased radiation shielding capabilities or searching for thicker radiation shielding glass materials, please take a look at the RD 50® information datasheet.

To get a quote for radiation shielding sight glasses or windows made of original high-quality RD 30® radiation protection glass, please use the button below:

 

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Specifications


RD30® Monolithic Radiation Shielding Glass
Transmission spectrum


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Standard Thickness

(Please click on a glass thickness to request a quote)

Thickness (mm)

Tolerance
6,00 ±0,25
Lower custom thicknesses on request

Lead-equivalent for X-ray radiation

RD 30® glass at 6 mm thick
Tube Voltage
(kV)		 Lead equivalent
(mm Pb)
< 50 ≥ 0,5
50 ≥ 0,5
56 ≥ 0,5
76 ≥ 0,5
80 ≥ 0,5
100 ≥ 0,5
110 ≥ 0,5
150 ≥ 0,5

Refractive Index

  • ne = 1,579

Mechanical Characteristics

  • Density: ≥ 3,13 g/cm3
  • Young's modulus E: 65 kN/mm2
  • Poisson number µ: 0,229
  • Torsion modulus G: 26 kN/mm2
  • Knoop hardness HK 0,1/20: 460

Thermal Characteristics

  • Mean linear coefficient of thermal expansion:
    10,5 x 10-6/K (20 °C ; 300 °C) (static measurement)
  • Transformation Temperature Tg: 452 °C
  • Viscosities and corresponding temperatures:
    • Strain point (1014,5 dPa): 424 °C
    • Annealing point (1013 dPa): 452 °C
    • Softening point (107,6 dPa): 620 °C
    • Forming temperature (106 dPa): 716 °C
    • Forming temperature (105 dPa): 798 °C
    • Forming temperature (104 dPa): 909 °C

Chemical Properties

  • Hydrolytic resistance according to DIN ISO 719:
    • Hydrolytic Class HGB 3
    • Equivalent of alkali (Na2O) per g of glass grains: 138 μg/g
  • Acid-resistant according to DIN 12 116:
    • Acid Class S4
    • Half surface weight loss after 6 h:
      67 mg/dm2
  • Alkali resistant according to DIN ISO 695:
    • Alkali Class A2
    • Surface weight loss after 3 h:
      139 mg/dm2

If you need thicker radiation shielding glass materials in thicknesses up to 20 mm or a more substantial lead equivalent for increased radiation shielding, please visit our datasheet of RD 50® radiation shielding glass.

Please observe the installation, cleaning, and maintenance instructions for radiation shielding glass products.

 

All given details and specifications are mean reference values and are not guaranteed. Also, please consider the "Notes on specifications".

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