Page 226 - Threading_Handbook

THREAD MILLING Machining Data for Solid Carbide Threading Endmills Strength Hardness Material
Tensile

Condition
Material
No.
HB
[Kspi]
ISO
125
Annealed
61
1
< 0.25 %C
≥ 0.25 %C
Annealed
2
190
94
Non-alloy steel
250
< 0.55 %C
123
Quenched and tempered
and cast steel,
3
free cutting steel
≥ 0.55 %C
220
Annealed
109
4
300
5
145
Quenched and tempered
Annealed
87
Low alloy steel and cast steel
P
275
7
(less than 5% of alloying
145
8
300
elements) Quenched and tempered 135 200 6
174 350 9
High alloyed steel, cast steel, Annealed 99 200 10
and tool steel Quenched and tempered 160 325 11
Ferritic/martensitic 99 200 12
Stainless steel and cast steel
Martensitic 119 240 13
M Stainless steel Austenitic 87 180 14
Ferritic 160 17
Grey cast iron (GG)
Pearlitic 250 18
K Cast iron nodular (GGG) Ferritic/pearlitic 180 15
Pearlitic
260
16
Ferritic 130 19
Malleable cast iron
Pearlitic 230 20
Not cureable 60 21
Aluminum- wrought alloy
Cured 100 22
=<12% Si Not cureable 75 23
Aluminum-cast, Cured 90 24
alloyed
N >12% Si High temperature 130 25
110
>1% Pb
Free cutting
26
Copper alloys Brass 90 27
Electrolitic copper 100 28
Duroplastics, fiber plastics 29
Non-metallic
Hard rubber 30
Fe based Annealed 200 31
Cured 280 32
High temp. alloys Annealed 250 33
S Ni or Co Cured 350 34
based
Cast 320 35
58 36
Titanium Ti alloys
Alpha+beta alloys cured 152 37
Hardened 55 HRC 38
Hardened steel
H Chilled cast iron Hardened 60 HRC 39
Cast
400
40
Cast iron Hardened 55 HRC 41
226 ISCAR