Wood inspector

Sei in: home » database dei legni
  • Decrease font size
  • Default character size
  • Encrease font size


Fornitori

Ditta 5
Indirizzo: via dei platani 4 liguria
Tel.: +39 456 5664 54

Sito web: www.pippo.it
E-mail: 
Ditta 4
Indirizzo: via dei platani 4 liguria
Tel.: +39 456 5664 54

Sito web: www.pippo.it
E-mail: 
Ditta 3
Indirizzo: via dei platani 4 liguria
Tel.: +39 456 5664 54

Sito web: www.pippo.it
E-mail: 
Ditta 2
Indirizzo: via dei platani 4 liguria
Tel.: +39 456 5664 54

Sito web: www.pippo.it
E-mail: 
Ditta 1
Indirizzo: via dei platani 4 liguria
Tel.: +39 456 5664 54

Sito web: www.pippo.it
E-mail: 
Ditta 0
Indirizzo: via dei platani 4 liguria
Tel.: +39 456 5664 54

Sito web: www.pippo.it
E-mail: 

Contatti

database dei legni


Ask informationsPrint pageSend to a friend
Hard pear
Hard pear (Olinia cymosa)

Family: Oliniaceae

Common names: Hard pear, Mountain hard pear, Nquao, Olinia, Red berry, Rooibessi, Satyobe

Distributed in: South Africa (Africa)

Common uses: Agricultural implements, Boat building (general), Cabinetmaking, Carvings, Flooring, Furniture, Handles: general, Ladders, Mine timbers, Musical instruments, Paneling, Plywood, Posts, Sporting Goods, Toys, Turnery, Vehicle parts

Colors: the heart isGreenish to greyish, Yellow to golden-yellow to orangeThe grain isWavy, the textureMediumand the lusterMedium

Natural durability: Resistant to attack from powder post (Lyctid & Bostrychid) beetles, Susceptible to attack from termites (Isoptera)

Drying Defects: Moderate end spitting, Moderate twist/warp

Cutting Resistance: Cutting Resistance with green wood is difficult

Gluing: Easy to glue

Nailing: Possible if prebored

Planing: Planes well, to a good finish

Response to hand tools: Difficult to machine

Veneering qualities: Easy to cut

Screwing: Possible if prebored ; Turning: Easy to turn

Polishing: Good;

  • Numerical data Metric
  • Numerical data English
  • Strength properties
  • References
Item Green Dry Metric
Specific Gravity
Density 801 kg/m3
Bending Strength 654 1024 kg/cm2
Crushing Strength 485 699 kg/cm2
Hardness 1192 kg
Impact Strength cm
Shearing Strength 223 kg/cm2
Stiffness 134 155 1000 kg/cm2
Tangential Shrinkage %
Radial Shrinkage 4 %
Weight 785 624 kg/m3
Maximum Load cm-kg/cm3
Toughness cm-kg
Static Bending kg/cm2
Item Green Dry English
Bending Strength 9310 14566 psi
Density 50 lbs/ft3
Hardness 2628 lbs
Maximum Crushing Strength 6899 9945 psi
Shearing Strength 3185 psi
Stiffness 1916 2208 1000 psi
Weight 49 39 lbs/ft3
Radial Shrinkage 4 %
Tangential Shrinkage 8 %

Density (dry weight) = 53-60 lbs/cu. ft
Max. crushing strength = high
Bending strength (MOR) = medium
Shrinkage, Tangential = moderate
Shrinkage, Radial = small
Shrinkage, Radial = moderate
Shearing strength (parallel to grain) = very high
Density (dry weight) = 46-52 lbs/cu. ft.
Density (dry weight) = 38-45 lbs/cu. ft.
Shrinkage, Tangential = small
Shrinkage, Tangential = large
Shrinkage, Tangential = fairly large
Shrinkage, Radial = large
Shrinkage, Radial = fairly large
Modulus of Elasticity (stiffness) = medium
Modulus of Elasticity (stiffness) = high
Hardness (side grain) = very hard
Hardness (side grain) = hard

Banks, C.H., Schoeman, J.P., Otto, K.P.,1977,The Mechanical Properties of Timbers with particular reference to South,Africa,South African Forestry Research Institute Bulletin,(Ed.,Schoeman, J.P. 1973 & Otto K.P. 1976,No.48Banks, C.H.,1954,The Mechanical Properties of Timbers with Particular Reference to those,grown in the Union of South Africa,Journal of the South African Forestry Association,No. 24 pp.44-65,[South,African Forestry Journal]Banks, C.H.,1970,The Durability of South African Wood and Wood Base Building Materials,South African Forestry Journal,No.75Bolza, E., Keating, W.G.,1972,African Timbers - the Properties, Uses and Characteristics of 700 Species,C.S.I.R.O. Div. of Building ResearchScott, M.H.,1935,Weights of South African Growth Timbers,South African Department of Agriculture and Forestry Bulletin,No.145,Forest Products Institute, Forestry Series No.1Sim, T.R.,1921,Native Trees of South Africa,Union of South Africa Department of Mines and Industries Memoir No.3South African Lumber Millers Assoc.,1969,Notes on some Commercially Available Hardwoods,S.A.L.M.A. Timber Info. Centre Timber Technical Guide,No.1Takahashi, A.,1978,Compilation of Data on the Mechanical Properties of Foreign Woods (Part,III) Africa,Shimane University, Japan, Research Report on Foreign Wood No. 7
*Come interpretare i dati (manleva su eventuali imprecisioni)