Shieldwerx LogoShieldwerx SWX-201HD

5% Borated Polyethylene Neutron Radiation Shielding




Shieldwerx SWX-201HD 5% Borated Polyethylene Neutron Radiation Shielding●  5% Borated Polyethylene Neutron Radiation Shielding

●  Excellent Mechanical and Nuclear Shielding Characteristics

●  Contains High Hydrogen Content with 5% Boron

●  Available in Slabs, Cylinders, Pellets and Custom Shapes


Shieldwerx SWX-201HD 5% Borated Polyethylene is typically used in neutron radiation shielding applications where low- and intermediate-levels of neutron flux are expected, but elevated temperatures are not. Its optimal boron content of 5% provides excellent attenuation of thermal neutrons, thus reducing the levels of capture-gamma radiation. SWX-201HD has a high hydrogen content, making it an effective fast neutron radiation shield. SWX-201HD is available in a wide range of form factors including slabs, bricks, cylinders, pellets, and other custom shapes. It is easily machined using common wood- and metal- working tools. Shieldwerx can not only provide custom machining, but can also pour SWX-201HD into custom made molds to provide application specific radiation shielding forms.


Shieldwerx 4' x 8' Borated Polyethylene Sheets

Shieldwerx SWX-201P Borated Polyethylene Pellets for Neutron Radiation Shielding


Borated Polyethylene

SWX-201P Borated

Polyethylene Pellets




Composition Data:

Hydrogen Atom Density/cm3: 7.5 x 1022
Natural Isotope Distribution: 99.98% 1H
Boron Atom Density/cm3: 3.0 x 1021
Natural Isotope Distribution: 19.6% 10B and 80.4% 11B
Weight Percent of All Isotopes of Boron: 5.0%
Total Density: 1.08 g/cm3 (67 lb/ft3)

Radiation Properties:

Macroscopic Thermal Neutron Cross Section: 2.00 (cm-1)                        
Gamma Resistance: 5 x 108 rad
Neutron Resistance: 2.5 x 1017 n/cm2

Physical Properties:

State: bricks, slabs, cylinders, pellets
Color: green
Odor: no odor
Machinability: excellent
Compressive Strength: 800 psi

Thermal Properties:

Recommended Temperature Limit: 180 °F (82.2 °C)
Melting Point 210 °F (98.8 °C)
Boiling Point 300 °F (149 °C)                                                     
Thermal Conductivity 1
Cubical Coefficient of Expansion: 6.1 x 10-4
Linear Coefficient of Expansion: 2 x 104

Chemical Properties:

Chemical Name & Synonyms: Borated Polyethylene
Trade Name & Synonyms: SWX-201
Chemical Family: Polyolefin's
Formula: Mixture (CH2)n, B
Solubility in Water: negligible

AVAILABLE SIZES: borated sheets

SWX-201U: 24 x 24 x 1 in. (610 x 610 x 25 mm) (W x L x Thickness)

SWX-201R: 48 x 48 x 1 in. (1219 x 1219 x 25 mm) (W x L x Thickness)

SWX-201G: 48 x 96 x 1 in. (1219 x 2438 x 25 mm) (W x L x Thickness)

SWX-201C: 4 x 8 x 2 in. (102 x 203 x 51 mm) (W x L x Thickness)

SWX-201B: 24 x 24 x 2 in. (610 x 610 x 51 mm) (W x L x Thickness)

SWX-201X: 48 x 48 x 2 in. (1219 x 1219 x 51 mm) (W x L x Thickness)

SWX-201D: 24 x 24 x 4 in. (610 x 610 x 101 mm) (W x L x Thickness)

SWX-201E: 36 x 48 x 4 in. (914 x 1219 x 101 mm) (W x L x Thickness)

Custom sizes and thicknesses are available


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