Mechanical Property	Green	MC 12 per cent
Density (lb/cu. ft)	35.9	41.9
Static bendings:
Stress at LP*(lb/sq.in.)	5950	8520
Modulus of rupture (lb/sq.in.)	10,300	11,400
Modulus of elasticity (1000 lb/sq. in.)	1110	1300
Compression parallel to grain:
Stress at LP* (lb/sq.in.)	4080	4450
Max. crushing strength (lb/sq.in.)	5220	7610
Modulus of elasticity (1000 lb/sq. in.)	1240	1220
Maximum shear strength:
Radial (lb/sq.in.)	1400	1510
Tangential (lb/sq.in.)	1440	1590
Impact (toughness value):
Radial (in./lb)	111	60
Tangential (in./lb.)	117	70
Impact (Izod value):
Radial (ft./lb.)	6.0	3.2
Tangential (ft./lb.)	8.2	4.2
Cleavage (Max. cleavage strength):
Radial	196	141
Tangential	247	214
Compression Perpendicular to Grain: (6"x2"x2" specimen)
Stress at LP*
Radial (lb./sq.in.)	1330	2340
Tangential (lb./sq.in.)	1380	2380
Stress at 0.1in.
Radial (lb./sq.in.)	2150	3370
Tangential (lb./sq.in.)	2130	3740
Hardness (Janka Hardness Value):
Radial (lb.)	1040	1370
Tangential (lb.)	1020	1380
End (lb.)	1120	1760
Tension:
Stress at LP* (lb./sq.in.)	1120	1850
Max. Torsional Shear Strength (lb./sq.in.)	1870	2050
Modulus of Rigidity(1000 lb./sq.in.)	124	182
Durability #	Class 1	Class 1

                                              * Limit of Proportionality

                                              # Durability Classification (Life in Ground)

                                                                                                Class 1 - Extremely Durable...............25-50 years

                                                                                                Class 2 - Durable ...............................15-25 years

                                                                                                Class 3 - Moderately Durable.............8 -15 years

                                                                                                Class 4 - Non Durable.........................less than 8 years