The Original Marine-Grade Polymer Building Sheet.
Now Available for Upgrade with a ASTM E-84 Class A or B Flame/Smoke Rating and CAN/ULC-S102 for Canadian Rating
- Description
- Applications
- Videos
- Specifications
- Physical Properties
- Physical Properties FlameShield Class A
- Flame Rating
- Colors
- Downloads
King StarBoard® is the original marine-grade polymer and the industry standard. It is the product of a proprietary process called K-Stran®, the most advanced manufacturing process available for producing consistently flat continuous sheets. King StarBoard® is environmentally stabilized to withstand the harshest marine conditions. It will not rot or discolor like teak and other solid woods, and it will not delaminate like wood laminates. King StarBoard® is easy to work with using standard woodworking tools, and design changes are a snap. In addition, the installed cost of King StarBoard® is less than teak, other common marine woods, and fiberglass. Plus, our large sheet sizes maximize your yield. Boat buyers appreciate King StarBoard’s® low-maintenance finish. Repair and refinishing due to weathering and decay are eliminated, and cleaning is easy. King StarBoard® has a handsome matte finish on both sides to hide scuffs and scratches that would show on glossy textured sheets or acrylics.
Popular Applications
Hatches, Doors, Grab Rails & Handles, Step and Dock Boxes, Rod & Cup Holders, Countertops (other than galley), Chairs, Tray Tables, Frames and Trim.
General Applications
- Made of the finest polymers available, using our
proprietary K-Stran process for superior flatness
and consistency. - Environmentally stabilized for harsh sun and tough
marine environments. - Will not rot, swell, splinter or delaminate when exposed
to humidity or water. - Precise tolerances ensure consistent color, thickness and
density, even for special thickness gauges and custom
order colors. - Easy to fabricate with standard woodworking tools and
requires little or no finishing. - Available in eight standard colors to match or accent
any gelcoat. - Unlimited custom/proprietary colors.
- Durable matte-textured surface on both sides.
- Easy to clean and never needs refinishing.
- Edges finish cleanly and easily.
- Forms easily for smooth curves.
- Has passed the Federal Motor Vehicle Standard 302 fire
test required for use in motor vehicles, including
motor homes. - Available in large sheets up to 54” x 96” or 48” x 96”.
- Custom sheet sizes available.
- Shipped with a protective masking on one side.
- Proven on thousands of boats and yachts.
- Experienced boat builders and boaters know the King StarBoard® brand and trust it more than any other.
Sheet Size:(in/mm)
48″ x 96″ (1219mm x 2438mm) | 54″ x 96″ (1371.6 mm x 2438mm)
Standard Gauge:(in)
1/4″ | 3/8″ | 1/2″ / | 3/4″ | 1″ | 1-1/2″
1-1/2″ not available in 54″ x 96″
Approximate Weight:(lbs)
48″ x 96″
40 lbs | 60 lbs | 80 lbs | 120 lbs | 160 lbs | 240 lbs
54″ x 96″
45 lbs | 67.5 lbs | 90 lbs | 135 lbs | 180 lbs
Standard Gauge:(mm)
6.4mm | 9.53mm | 12.7mm | 19mm | 25.4mm | 38.1mm
Approximate Weight: (kg)
1219mm x 2438mm
18kg | 27kg | 36kg | 54kg | 72.5kg |109kg
1371.6 mm x 2438mm
20kg | 31kg | 41kg | 61kg | 81kg
Tolerance information: Gauges ± 5%, both width and length Plus Only at room temperature.
Custom sheet sizes and gauges available.
| Properties | Units | ASTM | Nominal Values |
| Density | g/cc | D1505 | .96 |
| Tensile Strength @ Yield | psi | D638 | >4100 |
| Tensile Modulus | psi | D638 | 225,000 |
| Elongation @ Break | % | D638 | >699 |
| Elongation @ Yield | % | D638 | 9.8 |
| Flexural Modulus | psi | D790 | 185,000 |
| Flexural Stress @ 5% Strain | psi | D790 | 3,810 |
| Compressive Properties 10% Strain | psi | D695 | 4,950 |
| Durometer | Shore D | D2240 | 68 |
| Tensile Impact | ft.lbs./in.2 | D1822 | 115 |
| Izod Impact Resistance | ft.lbs./in.2 | D256 | 1.1 |
| Brittleness Temp. | ºF | D746 | <-105º |
| Vicat Softening | ºF | D1525 | 253º |
| Heat Deflection Temp. 66 psi | ºF | D648 | 167º |
| Screw and Nail Withdrawl | lbs | D1761 | 657 & 63 |
| Slip Resistance (wet) | - | D2047 |
*All values are determined on specimens prepared according to ASTM. Nominal values should not be interpreted as specifications.
King StarBoard® is made entirely from FDA and USDA approved materials.
King StarBoard® meets ASTM D4976 PE235
| Properties | Units | ASTM | Nominal Values |
| Density | g/cc | D1505 | 1.3 – 1.35 |
| Tensile Strength @ Yield | p.s.i. | D638 | 3780 |
| Tensile Strength @ Break | p.s.i. | D663 | 1,170 |
| Elongation @ Yield | % | D638 | 8.6 |
| Elongation @ Break | % | D638 | 53 |
| Flexural Modulus | p.s.i. | D790 | 179,000 |
| Durometer (Hardness) | Shore D | D2240 | 71 |
| Flexural Stress @ 5% Strain | psi | D790 | 4330 |
| Vicat Softening | ºF | D1525 | 264 |
| Heat Deflection Temp. 66p.s.i. |
ºF | D648 | 188 |
| Coefficient of Linear Thermal Expansion |
in./in./ºF | D696 | 6×10-5 |
| Surface Burning Characteristics | FSI & SDI | E-84 | 20 & 60 |
| Surface Burning Characteristics | FSI & SDI | ULC-S102 | 20 & 65 |
Protect Your Interests with E-84 Class A or B Flame Rated Polymer Sheets from King Plastic Corporation
Available in King StarBoard® Products
The ASTM E84
This test method is intended to compare the surface flame spread and smoke developed measurements to those obtained from the tests of mineral fiber cement board and select grade red oak flooring. The results are expressed as Flame Spread Index and Smoke Developed Index.
Results
Class A Interior Finish:
Flame Spread Index 0-25, Smoke Developed Index 0-450. Includes any material classified at 25 or less on the flame spread test scale and 450 or less on the smoke developed test scale. Any element thereof when so tested shall not continue to propagate fire.
Class B Interior Finish:
Flame Spread Index 26-75, Smoke Developed Index 0-450. Includes any material classified at 25 but not more than 76 on the flame spread test scale and 450 or less on the smoke developed test scale.
Black, Dolphin Gray, Light Gray, Sanshade, Sea Pearl, Seafoam, Arctic White, White/White*Note: These images illustrate the various color combinations. Due to the wide variances in computer monitors and printers, King Plastic Corporation does not recommend using these graphics for color matching purposes. Please contact your distributor for details.
