Values used in the calculation of the model relating the fracture toughness with the microstructural features in bainitic steels (h = 0.15).

Table 4: Values used in the calculation of the model relating the fracture toughness with the microstructural features in bainitic steels (η = 0.15).

Sample #	Values of:
Sample #	Yield strength (MPa)	*(σ_yη)^1/2**	K_IC from experiment	K_IC calculated from Eq. 12 (C = 3.1)	% Difference in K_IC values
1	843	18.1	53.3	56.0	5.1%
2	867	18.3	53.9	56.8	5.4%
3	871	18.4	55.2	56.9	3.1%
4	882	18.5	55.6	57.3	3.0%
5	896	18.6	56.5	57.7	2.2%
6	903	18.7	58.2	58.0	0.4%
7	907	18.7	58.2	58.1	0.2%
8	907	18.7	58.3	58.1	0.3%
9	914	18.8	58.5	58.3	0.3%
10	917	18.8	59.7	58.4	2.1%
11	931	19.0	60.0	58.9	1.9%
12	985	19.5	60.1	60.6	0.8%
13	987	19.5	60.9	60.6	0.5%
14	1053	20.2	61.6	62.6	1.6%
15	1094	20.6	63.5	63.8	0.5%
16	1110	20.7	63.9	64.3	0.6%
17	1118	20.8	66.5	64.5	3.0%
18	1119	20.8	68.1	64.5	5.2%
19	1151	21.1	68.4	65.5	4.3%
20	1157	21.2	71.1	65.6	7.7%
21	1166	21.2	73.5	65.9	10.4%
22	1213	21.7	73.6	67.2	8.7%
23	1271	22.2	75.7	68.8	9.2%

#: Number.