Common Name(s): Ironwood, Lebombo, mecrusse, cimbirre
Scientific Name: Androstachys johnsonii
Distribution: Southeastern Africa and Madagascar; found in mountainous regions, especially the Lebombo Mountains in Southern Africa
Tree Size: 100-130 ft (30-40 m) tall,
2-3 ft (.6-1 m) trunk diameter
Average Dried Weight: 55.1 lbs/ft3 (885 kg/m3)
Specific Gravity (Basic, 12% MC): .72, .88
Janka Hardness: 2,610 lbf (11,610 N)
Modulus of Rupture: 18,560 lbf/in2 (128.0 MPa)
Elastic Modulus: 1,599,000 lbf/in2 (11.00 GPa)
Crushing Strength: 9,210 lbf/in2 (63.5 MPa)
Shrinkage: Radial: 5.9%, Tangential: 6.3%,
Volumetric: 12.1%, T/R Ratio: 1.1