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11. Material classification and choice of tool
11.1 Selecting blade
Warning
Always use original saw blades. This leads to a higher cutting quality.
First of all the pitch of the teeth must be chosen, in other words, the numbers of teeth per inch (25,4 mm)
suitable for the material to be cut, according to these criteria:
-
Parts with a thin and / or variable section such as profiles, pipes and plate, need close toothing, so that the
number of teeth used simultaneously in cutting is from 3 to 6.
-
Parts with large transverse sections and solid sections need widely spaced toothing to allow for the
greater volume of the shavings and better tooth penetration.
-
Parts made of soft material of plastic (light alloys, mild bronze, Teflon, wood, etc.) also require widely
spaced toothing.
11.2 Material typs
Types of steel
I
Usage
UNI
Fe360
Construction
Fe430
steels
Fe510
C20
C40
Carbon steels
C50
C60
50CrV4
Spring steels
60SiCr8
Alloyed steels
35CrMo4
for hardening
39NiCrMo4
and tempering
41CrAlMo7
and for nitriding
Alloyed
18NiCrMo7
casehardening
20NiCrMo2
steels
Alloyed for
100Cr6
bearings
52NiCrMoKU
C100KU
Tool steel
X210Cr13KU
58SiMo8KU
X12Cr13
X5CrNi1810
Stainless steel
X8CrNi1910
X8CrNiMo17133
Aluminium Copper alloy G-CuAl11Fe4Ni4 UNI 5275
Copper alloys
Special manganese-/silicon brass G-CuZn36Si1Pb1 UNI5038
Special brass
Manganese bronze SAE43 - SAE430
Bronze
Phosphor bronze G-CuSn12 UNI 7013/2a
Gray pig iron
Cast iron
Speroidal graphite cast iron
Malleable cast iron
D
F
DIN
AF NOR
St37
E24
St44
E28
St52
E36
XC20
CK20
CK40
XC42H1
CK50
---
CK60
XC55
50CrV4
50CV4
60SiCr7
---
34CrMo4
35CD4
36CrNiMo4
39NCD4
41CrAlMo7
40CADG12
---
20NCD7
21NiCrMo2
20NCD2
100Cr6
100C6
56NiCrMoV7
---
C100W1
---
X210Cr12
Z200C12
---
Y60SC7
4001
---
4301
Z5CN18.09
---
---
4401
Z6CDN17.12
G25
GS600
W40-05
-26-
USA
Hardness
GB
AISI-
Brinell
SB
SAE
HB
---
---
116
43
---
148
---
180
50
060 A 20
1020
198
060 A 40
1040
198
---
1050
202
060 A 62
1060
202
735 A 50
6150
207
---
9262
224
708 A 37
4135
220
---
9840
228
905 M 39
---
232
En 325
4320
232
805 H 20
4315
224
534 A 99
52100
207
---
---
244
BS 1
S-1
212
BD2-BD3
D6-D3
252
---
S5
244
---
410
202
304 C 12
304
202
---
---
202
202
316 S 16
316
220
140
120
100
212
232
222
Characteristics
Hardness
2
Rockwell
R=N/mm
HRB
360÷480
67
80
430÷560
88
510÷660
540÷690
93
93
700÷840
94
760÷900
94
830÷980
95
1140÷1330
98
1220÷1400
98
780÷930
99
880÷1080
100
930÷1130
100
760÷1030
98
690÷980
95
690÷980
800÷1030
102
96
710÷980
103
820÷1060
102
800÷1030
670÷885
94
94
590÷685
94
540÷685
94
490÷685
620÷685
98
77
375÷440
69
320÷410
56.5
265÷314
96
245
100
600
98
420
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