Average maximum force to break composites, standard deviation, its flexural strength and flexural modulus (the data quoted are all average results taken from a minimum of five tests).

Table 2: Average maximum force to break composites, standard deviation, its flexural strength and flexural modulus (the data quoted are all average results taken from a minimum of five tests).

Tested materials	Code	Max force (N)	Stand. dev. for force (%)	Flexural strength (MPa)	Flexural modulus (GPa)	Wt., % (%)	Rock.B hardness (HRB)	Impact energy (J)
Epoxy	EP	352	56	83	3.43	0	41	2.4
40 wt.% BF	BF40	739	36.81	315	16.78	40	48	15
60 wt.% BF	BF60	990	87.58	359	18.36	60	60.3	16.8
40 wt.% CF	CF40	1254	100.14	601.9	38.68	40	84	8.6
60 wt.% CF	CF60	1474	92.08	700	41.68	60	91	13