Figure 4
The horizontal axis compares 17-4 P H and H-13, and the vertical axis shows hardness in H V from 300 to 460. The 17-4 P H bar records a mean hardness of approximately 319 H V, with a 95 per cent confidence interval extending from approximately 316 to 322 H V. The H-13 bar records a mean hardness of approximately 440 H V, with a 95 per cent confidence interval extending from approximately 425 to 454 H V. Individual standard deviations calculate the confidence intervals.Hardness comparison between 17-4PH and H-13
Source(s): Author’s own work