Tensile properties of N-A50, N-A35C15, N-A30C20 and N-A25C25^a.

	Young's modulus (Mpa)	Tensile strength (Mpa)	Elongation (%)	Fracture energy (MJ m−3)
N-A50	1238 ± 22	71.8 ± 3.2	8.8 ± 1.0	373 ± 8
N-A35C15	749 ± 93***	37.0 ± 3.9****	19.6 ± 4.4***	579 ± 9****
N-A30C20	601 ± 6****	25.5 ± 0.8****	39.2 ± 6.7***	1194 ± 12****
N-A25C25	94 ± 1****	13.9 ± 0.1****	65.4 ± 3.9****	738 ± 1****

^aThe data in the table were expressed as mean ± standard deviation; *p < 0.05, **p < 0.01, ***p < 0.001, ****p < 0.0001.