Clicking any heading in the main data area (at right) will scroll the page back to this top position. Use the following links to jump to the associated section in the main data. Common Names Common Uses Countries of Distribution Ease of Drying Family Name Gluing Grain Heartwood Color Light-Induced Color Change Luster Nailing Natural Durability Numerical Data Polishing References Regions of Distribution Resistance to Impregnation Response to Hand Tools Sapwood Color Scientific Name Screwing Strength Properties Synonyms Texture Trade Name Tree Identification Tree Size Turning Veneering Qualities		Scientific Name Combretum schumannii Trade Name Mgongolo Family Name Combretaceae Synonyms Combretum macrostigmateum Common Names Mgongolo, Mgurulu, Mgurure, Mlanyika, Mpera-mwitu, Mungulule, Muranyani Regions of Distribution Africa Countries of Distribution  [VIEW MAP] Kenya Common Uses Agricultural implements, Bearings & bushings, Boat building (general), Carvings, Flooring: industrial heavy traffic, Handles: general, Heavy construction, Ladders, Mathematical instruments, Mine timbers, Musical instruments, Piling, Sporting Goods, Toys, Turnery Heartwood Color White Green/grey Red Purple Dark brown Sapwood Color White White to yellow Well defined Grain Straight Even Straight Texture Fine Medium Fine to medium Luster Medium Natural Durability Durable Resistant to termites Non-resistant to powder post beetles Non-resistant to marine borers Susceptible to insect attack Moderately durable Susceptible to attack from powder post (Lyctid & Bostrychid) beetles Moderately resistant to termite (Isoptera) attack Moderately resistant to marine borer attack Durable Light-Induced Color Change Darker Ease of Drying Fairly Easy Moderately Difficult to Difficult Tree Identification Bole/stem form is misshapen Bole/stem form is fluted Tree Size Tree height is 20-30 m Gluing Fairly Easy to Very Easy Nailing Very Good to Excellent Results Fair to Good Results Possible if prebored Resistance to Impregnation Heartwood is extremely resistant Response to Hand Tools Easy to Work Fairly Difficult to Difficult to Work Easy to machine Screwing Fairly Easy to Very Easy Turning Fairly Easy to Very Easy Very Good to Excellent Results Fair to Good Results Good results Easy to turn Veneering Qualities Suitable for slicing Veneers easily Veneers moderately easy Suitable for peeling Polishing Very Good to Excellent Results Fair to Good Results Good results Strength Properties Density (dry weight) = 61-67 lbs/cu. ft Shrinkage, Tangential = very small Shrinkage, Radial = very small Shearing strength (parallel to grain) = high Modulus of Elasticity (stiffness) = high Max. crushing strength = high Density (dry weight) = 67-75 lbs/cu.ft Bending strength (MOR) = high Shrinkage, Tangential = small Shrinkage, Tangential = moderate Shrinkage, Radial = small Numerical Data Item Green Dry English Bending Strength 13576 20956 psi Density 57 lbs/ft3 Maximum Crushing Strength 6899 9945 psi Shearing Strength 2847 psi Stiffness 2167 2494 1000 psi Weight 56 51 lbs/ft3 Radial Shrinkage 2 % Tangential Shrinkage 5 % Item Green Dry Metric Bending Strength 954 1473 kg/cm2 Density 913 kg/m3 Maximum Crushing Strength 485 699 kg/cm2 Shearing Strength 200 kg/cm2 Stiffness 152 175 1000 kg/cm2 Weight 897 817 kg/m3 Radial Shrinkage 2 % References Bolza, E., Keating, W.G.,1972,African Timbers - the Properties, Uses and Characteristics of 700 Species,C.S.I.R.O. Div. of Building Research Dale, I.R., Greenway, P.J.,1961,Kenya Trees and Shrubs,Buchanans Kenya Estates Ltd. Nairobi Hatchards London France - C.T.F.T.,1966,Bois Tropicaux,C.T.F.T. Publ.,12 Tanzania Forest Division,1967,The Weights and Shrinkage of some Local Timbers,Tanzania Forest Div. Util. Sect. Technical Note,No.25 Wimbush, S.H.,1950,Catalogue of Kenya Timbers,Govt. Printer Nairobi Kenya