Table 2.

The results of the breaking work of the V-notch samples and the K_1C values determined on the basis of impact strength measurements.

Material	No Samples	Temp Test	Energy	K 1C
		°C	J	MPa·m1/2
Analysed hot work steel	1	100	15.6	46.6
	2	150	18.2	52.9
	4	200	21.2	60.1
	3	250	22.1	62.2
	5	300	23.3	65.1
Proposed hot work steel	1	100	22.8	63.9
	2	150	28.9	78.5
	3	200	44.3	115.5
	4	250	47.2	122.5
	5	300	53.3	137.1