RD 30^® Radiation Shielding 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
• Good optical transmission and clarity
• Larger glass dimensions possible
• Holes and recesses with freely defined dimensions can be produced
• Can be ground and polished to custom thickness

Typical Applications

• Sight glass window with shielding effect against X-ray and gamma radiation
• Radiation shielding glass for mammography devices
• Medical X-ray equipment and -rooms
• Protection glass for irradiation applications
• Dental radiological applications
• View ports in radiological doors and rooms
• Radiation protection for material testing applications
• Shielding glass for "Glove boxes"
• Radiation protection viewing windows in medical areas

 

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Radiation shielding glass protects against harmful radiation and increases safety

RD 30^® high quality radiation shielding glass is a drawn lead containing flat glass product that provides protection against gamma and X-ray radiation. Such radiation is often used in medical technology for diagnostic purposes or in medical radiation therapy. But also material testing is often done with the help of X-rays. Since these types of radiation have a high potential to be harmful to health and unintentional emission of radiation must be prevented at all costs, transparent device openings, sight glasses, or viewing windows in doors to radiation areas are protected with radiation shielding glass for safety reasons. RD 30^® from SCHOTT, the only radiation shielding glass manufactured in Germany, is an ideal and proven solution. It is a monolithic X-ray shielding glass that contains lead oxide. It provides a lead equivalent of ≥ 0.5 mm Pb at 56 kV. The lead equivalent is a measure of the protective effect of radiation protection glass. The value of the lead equivalent is indicated either directly in mm Pb or alternatively as a percentage of the glass thickness equal to pure lead. RD 30^® glass was specifically developed for the use in areas with lower X-ray radiation for example at mammography workplaces. However, even with tube voltages of up to 150 kV, RD 30^® has a lead equivalent of ≥ 0.5 mm Pb so that it also can often be used for material testing equipment. To ensure durable and safe function of the shielding glass product be sure to read and follow the installation, cleaning, and maintenance instructions for the radiation shielding glass products. If you are looking for glass with a higher lead equivalent i. e. with higher radiation shielding capabilities or if you search for thicker radiation shielding glass please take a look at the RD 50^® information data-sheet.

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

 

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Specifications

Show transmission curve of RD 30^®
(monolithic glass)

Refractive Index

• n_e = 1,579

Mechanical Properties

• 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 Properties

• 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 (10^14,5 dPa): 424 °C
  • Annealing point (10¹³ dPa): 452 °C
  • Softening point (10^7,6 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

Lead equivalent in mm Pb for X-radiation (monolithic RD30-glass, 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

Available Glass Thickness

• 6,0 mm (+/-0,25) (Click on glass thickness to request)
• Custom glass thicknesses are available on request

If you need thicker radiation shielding glass materials in the range up to 20 mm and/or a larger lead equivalent please visit our RD 50^® radiation shielding glass website.

 

For safety reasons 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. In addition please consider the "Notes on specifications"