King Plasti-Shield® – Boron Filled Polyethylene

King Plasti-Shield® has been used as neutron shielding for over 30+ years.

With 5% boron by weight and our trademark purple color, King Plasti-Shield® 5% Borated Polyethylene is manufactured to meet all applicable applications for industrial use, medical applications (with regards to cancer treatment) and is effective shielding for support in all areas of security, i.e., seaports, airports, border protection and other applications requiring attenuation of thermal neutrons.

King Plastic Corporation is certified by prime vendors of the U.S. government as the source for Grade II and Grade III neutron shielding material on nuclear submarines and naval warships. Our process, materials, quality programs, sampling, testing, tracing and packaging all meet or exceed military specifications such as MIL-P-23536A and EB2562E. We use MIL-STD-45662 for internal calibration system traceable back to NIST.

Now it’s time to make King Plasti-Shield® your material of choice when it comes to neutron shielding protection.

  • Makes material that meets MIL-P-23536A and EB2562E and have quality procedures that meet all requirements of both.
  • We only use approved suppliers for all Raw Materials.
  • We have an approved sampling plan in accordance with MIL-STD-105 inspection level 0.4% single normal.
  • Test for Hydrogen Density to verify correct level.
  • Use a Fluoroscopic X-Ray machine to check for voids and foreign materials.
  • Capable of performing all packaging and shipping requirements
  • Audited by the Navy Nuclear, Electric Boat and Northrup Grumman every 2 years with no findings.
  • Perform all marking of material for traceability in accordance with MIL-STD-792.
  • We supply all Lab Reports and all Certifications.
  • 100% Visual Inspections are performed on all material.
  • Use MIL-STD-45662 for internal calibration system traceable back to NIST.
  • We have systems in place to handle the use of NO-FORN documents and have been approved for use in military critical technical data.

King Plasti-Shield® Industrial Grade (5%) is in stock or may be produced to order with as little as two to three weeks lead time.

Popular Applications:

  • Security Scanners used in sea ports, airports and border protection internationally.
  • Medical vaults and doors for linear particle accelerators and other radiation applications, research applications.
  • Nuclear reactors and construction of nuclear-powered vessels.

Standard Gauge: (in/mm)
1″ | 25.4mm

Approximate Weight: (lbs/kg)
160 lbs | 72.57 kg

Sheet Size:(in/mm)
48″ x 96″ | 1219mm x 2438mm


Custom sheets, blocks and slabs available in standard or custom colors.

Standard Sheet Sizes Tolerances Information
Gauges ± 5%, both width and length, plus only at room temperature.

Weight: (lb./Cubic Inch):
.035

Properties Units ASTM Nominal Values
Density g/cc D1505 .98
Tensile Strength @ Yield p.s.i. D638 >1,400
Elongation @ Break % D638 >20%
Flexural Modulus p.s.i. D790 65,000
Durometer Shore D D2240 70
Tensile Impact ft.lbs./in.2 D1822 99
Vicat Softening ºF D1525 192º
Heat Deflection Temp.
66p.s.i.
ºF D648 183º

*All values are determined on specimens prepared according to ASTM Standards.
Nominal values should not be interpreted as specifications.

Thickness required to attenuate a neutron beam by a factor of 10. m

Material Density Thickness
Water 1.0 8.8″
Concrete 2.4 9.6″
HD Concrete 3.5 9.6″
Iron 7.9 5.7″
Lead 11.3 7.8″
King Plasti-Shield .92 8.0″

* For tolerance information, contact your King Plastic Corp. representative. Custom and proprietary colors available with appropriate minimum order.


dsc_0080 Purple 5% Boron by Weight, Red 2% Boron by Weight

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