Marine Plywood

Product Description

KTI Marine-grade plywood, often. simply called marine plywood, is not what it’s often claimed to be. That is, it’s not waterproof. It is a good-quality, hardwood plywood made with waterproof glue, but since it’s not treated with chemicals, it is not rot-resistant. Better grades also tend to be lightweight, strong, and virtually free of defects. These qualities are what make this plywood a popular choice for building boats and boat parts

Technical Specification (IS – 1659 : 2004)
Serial No. Test BIS Requirement Observed Value
1. Dimension Length Length +6 / -0 (mm) Length +2 mm
Width Width +3 / -0 (mm) Width +1 mm
Thickness up to 5 mm +10%/-10% 6 mm & Above +5%/-5% .+3.50% .+3.00%
Squareness 2 mm / 1000 mm .67 mm
Edge Straightness 2 mm / 1000 mm .70 mm
2. Moisture Content 5-15% 7.50%
3. Glue Adhesion in Dry State
Glue Shear Strength Avg. – 1350 N Ind. – 1100 N Avg. – 1725.20 N Ind. – 1541.17 N
Adhesion of Plies Shall Be Min. Pass Standard Excellent
4. Water Resistance Test
Glue Shear Strength Avg. – 1000 N Ind. – 800 N Avg. – 1260.11 N Ind. – 1086.35 N
Adhesion of Plies Shall Be Min. Pass Standard Pass Standard
5. Tensile Strength
Along the Grain Direction 42.00 N / mm2 46.51 N / mm2
Across the Grain Direction 25.00 N / mm2 42.29 N / mm2
Along + Across the Grain Direction 84.50 N / mm2 88.80 N / mm2
6. Static Bending Strength
MOR Along the Grain Avg. – 50 N / mm2 Ind. – 45 N / mm2 Avg. 54.82 N / mm2 Ind. 51.19 N / mm2
MOR Across the Grain Avg. – 30 N / mm2 Ind. – 27 N / mm2 Avg. 51.46 N / mm2 Ind. 48.17 N / mm2
MOE Along the Grain Avg. – 7500 N / mm2 Ind. – 6700 N / mm2 Avg. 7762.19 N/mm2 Ind. 7485.32 N/mm2
MOE Across the Grain Avg. – 4000 N / mm2 Ind. – 3600 N / mm2 Avg. 4535.50 N/mm2 Ind. 4265.20 N/mm2
7. Wet Bending Strength
MOR Along the Grain Avg. – 25 N / mm2 Ind. – 22 N / mm2 Avg. 31.16 N/mm2 Ind. 30.40 N/mm2
MOR Across the Grain Avg. – 7500 N / mm2 Ind. – 6700 N / mm2 Avg. 7762.19 N/mm2 Ind. 7485.32 N/mm2
MOE Across the Grain Avg. – 4000 N / mm2 Ind. – 3600 N / mm2 Avg. 4535.50 N/mm2 Ind. 4265.20 N/mm2
7. Wet Bending Strength
MOR Along the Grain Avg. – 25 N / mm2 Ind. – 22 N / mm2 Avg. 31.16 N/mm2 Ind. 30.40 N/mm2
MOR Across the Grain Avg. – 15 N / mm2 Ind. – 13 N / mm2 Avg. 28.95 N/mm2 Ind. 26.45 N/mm2
MOE Along the Grain Avg. – 3750 N / mm2 Ind. – 3400 N / mm2 Avg. 4010.86 N/mm2 Ind. 3890.10 N/mm2
MOE Across the Grain Avg. – 2000 N / mm2 Ind. – 1800 N / mm2 Avg. 2595.33 N/mm2 Ind. 2149.12 N/mm2
8. MyCological Test
Edge of Specimen Shall Be no Sign Of Separation No Sign of Separation at Edges
Glue Shear Strength Avg. – 1000 N Ind. – 800 N Avg. 1322.51 N Ind. 1146.15 N
Adhesion of Plies Shall Be Min. Pass Standard Pass Standard
9. Retention of Preservative (ACC) 12 kg / m3 13.10 kg / m3
10. Workmanship And Finish Satisfactory Satisfactory