22.35 Note in Fig. 22.1 that all tool materials, especially carbides, have a wide range of hardnesses for a particular tem perature. Describe each of the factors th a t are responsible for this wide range. 95Ceramics9070Carbides658560805550Cast alloys75407035306525206055100300500700Temperature ("C)FIGURE 22.1 The hardness of various cutting-tool mate-rials as a function of temperature (hot hardness); the widerange in each group of materials is due to the variety of toolcompositions and trearments available for that group.Carbon toolHardness (HRA)High-speed steelsHRC

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Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

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22.35 Note in Fig. 22.1 that all tool materials, especially
carbides, have a wide range of hardnesses for a particular
tem perature. Describe each of the factors th a t are responsible
for this wide range.

95
Ceramics
90
70
Carbides
65
85
60
80
55
50
Cast alloys
75
40
70
35
30
65
25
20
60
55
100
300
500
700
Temperature ("C)
FIGURE 22.1 The hardness of various cutting-tool mate-
rials as a function of temperature (hot hardness); the wide
range in each group of materials is due to the variety of tool
compositions and trearments available for that group.
Carbon tool
Hardness (HRA)
High-speed steels
HRC

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