Page 224 - Threading_Handbook
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THREAD MILLING Machining Data for Solid Carbide Threading Endmills Strength Hardness Material
Tensile
2
No.
HB
[N/mm ]
ISO
Material
Condition
< 0.25 %C
1
Annealed
420
125
190
650
2
Annealed
≥ 0.25 %C
Non-alloy steel
250
< 0.55 %C
850
Quenched and tempered
and cast steel,
3
4
≥ 0.55 %C
free cutting steel
220
750
Annealed
Quenched and tempered
300
5
1000
Annealed
600
Low alloy steel and cast steel
P
7
275
930
(less than 5% of alloying
300
8
elements) Quenched and tempered 1000 200 6
1200 350 9
High alloyed steel, cast steel, Annealed 680 200 10
and tool steel Quenched and tempered 1100 325 11
Ferritic/martensitic 680 200 12
Stainless steel and cast steel
Martensitic 820 240 13
M Stainless steel Austenitic 600 180 14
Ferritic 160 17
Grey cast iron (GG)
Pearlitic 250 18
K Cast iron nodular (GGG) Ferritic/pearlitic 180 15
Pearlitic
16
260
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
Free cutting
110
26
>1% Pb
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
RM 400 36
Titanium Ti alloys
Alpha+beta alloys cured RM 1050 37
Hardened 55 HRC 38
Hardened steel
H Chilled cast iron Hardened 60 HRC 39
Cast
40
400
Cast iron Hardened 55 HRC 41
224 ISCAR