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Broussonet
Broussonet (Broussonetia papyrifera)

Family: Moraceae

Common names: Broussonet, Malaing, Thale, The paper mulberry

Distributed in: Australia, Burma, China, India, Japan, Korea-North, Korea-South, Malaysia, Thailand (Oceania and S.E. Asia)

Common uses: Fuelwood, Pulp/Paper products

Tree size: Trunk diameter is 100-150 cm

Colors: the heart isWhite, Yellowand the sapwoodWhite, Yellow.The grain isGrowth rings (figure), the textureMedium

Natural durability: Perishable, Susceptible to insect attack

Ease of Drying: Fairly Easy

Boring: Fairly easy to very easy

Cutting Resistance: Easy to saw

Gluing: Fairly Easy to Very Easy

Mortising: Very Good to Excellent

Nailing: Fairly Easy to Very Easy

Planing: Very Good to Excellent

Resistance to Impregnation: Resistant sapwood

Response to hand tools: Easy to Work

Sanding: Very Good to Excellent Results

Steam bending: Very Good to Excellent Results

Turning: Very Good to Excellent Results

Polishing: Fair to Good; Varnishing: Very Good to Excellent;

  • Numerical data Metric
  • Numerical data English
  • Strength properties
  • References
Item Green Dry Metric
Specific Gravity
Density kg/m3
Bending Strength 429 674 kg/cm2
Crushing Strength 150 275 kg/cm2
Hardness 144 kg
Impact Strength 55 cm
Shearing Strength 62 kg/cm2
Stiffness 79 92 1000 kg/cm2
Tangential Shrinkage 7 %
Radial Shrinkage 4 %
Weight kg/m3
Maximum Load cm-kg/cm3
Toughness cm-kg
Static Bending kg/cm2
Item Green Dry English
Bending Strength 6111 9589 psi
Hardness 319 lbs
Impact Strength 22 inches
Maximum Crushing Strength 2139 3916 psi
Shearing Strength 882 psi
Stiffness 1131 1321 1000 psi
Radial Shrinkage 4 %
Tangential Shrinkage 7 %
Volumetric Shrinkage 8 %

Max. crushing strength = low
Bending strength (MOR) = low
Shearing strength (parallel to grain) = very low
Modulus of Elasticity (stiffness) = very low
Hardness (side grain) = very soft
Toughness-Hammer drop (Impact Strength) = very low
Toughness-Hammer drop (Impact Strength) = low
Shrinkage, Volumetric = small
Shrinkage, Tangential = moderate
Shrinkage, Radial = moderate
Modulus of Elasticity (stiffness) = low

Bhat, R.V., Guha, S.R.D.,Indigenous cellulosic raw materials for the production of pulp, paper and,board. Part VI - writing and printing papers from paper mulberry,(Broussonetia papyrifera,Indian Forest Bulletin 156E.H. Walker,1954,Important Trees of the Ryukyu Islands,United States Civil Administration of the Ryukyu Islands Special Bulletin,No. 3Gamble, J.S.,1902,A Manual of Indian Timbers,Sampson Low, Marston & Co. LondonGulati, et al, A.S.,1981,A note on the physical and mechanical properties of Broussonetia paprifera,from New Forest, Dehra Dun,Indian Journal of Forestry 4(1) pp37-42
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