Cast Iron
Turning Insert Selection Guide
Negative Type
Positive Type
Depth of Cut
NGZ
2,0 NGU 0
0,2
0,4
0,6
NGZ
NUZ
No breaker
4,0
2,0
NMU NMU
NGU
Sharp Edge
0
Strong Edge
0,2
0,4
0,6
No breaker NMU
Sharp Edge
Strong Edge
Feed Rate (mm/rev)
NUZ
Feed Rate (mm/rev)
Roughing
Large
6,0
Finishing Medium Cutting
NUZ NGU
No breaker
NME
Depth of Cut
NME
NGZ 4,0
Large
NME
Finishing
No breaker
6,0 Depth of Cut
(mm) Medium Cutting Roughing
(mm)
Depth of Cut
Insert Selection
Chipbreakers
Grades Grey Cast Iron (GG)
Ductile Cast Iron (GGG)
(m/min) 2.000
BNS800
High Speed, Continuous Cutting
BN7000 Continuous Cutting
500
New
Mill-Scaled Work, Interrupted Cutting
AC4010K 300 200
New
AC4015K
New
300
200
Continuous Cutting
AC4010K New
BNC500
AC4015K
AC8025P Finishing
100
Roughing
General Cutting
Interrupted Cutting
AC8025P Finishing
Roughing
Continuous Cutting
General Cutting
Recommended Cutting Conditions Work Materials
Cutting Process
Gray Cast Iron (GG‑25, etc.)
Interrupted
Ductile Cast Iron (GGG‑40.3, etc.)
High-strength Ductile Cast Iron (GGG‑70, etc.)
A10
Mill-Scaled Work, Interrupted Cutting
AC420K
AC420K
100
Continuous Cutting
High Speed, Continuous Cutting
500
Cutting Speed (vc)
Cutting Speed (vc)
1.000
(m/min)
Interrupted Cutting
(Min. - Optimum - Max.)
Cutting Conditions
Grades
Depth of Cut ap (mm/rev)
Feed Rate f (mm/rev)
Cutting Speed vc (m/min)
High Speed Cutting
BN7000
0,1–0,3–1,0
0,10–0,20–0,50
500–1.500–2.000
Continuous – General
AC4010K
0,5–2,0–6,0
0,10–0,25–0,40
200–400–700
AC4015K
0,5–2,0–6,0
0,10–0,30–0,50
180–300–450
Heavy Interrupted
AC420K
0,5–2,0–6,0
0,10–0,30–0,60
150–200–300
High Speed Cutting
BNC500
0,1–0,2–0,5
0,10–0,20–0,40
150–350–500
Continuous – General
AC4010K
0,5–2,0–6,0
0,10–0,25–0,40
180–300–450
Interrupted
AC4015K
0,5–2,0–6,0
0,10–0,30–0,50
160–250–400
Heavy Interrupted
AC420K
0,5–2,0–6,0
0,10–0,30–0,60
120–170–250
High Speed Cutting
BNC500
0,1–0,2–0,5
0,10–0,20–0,40
200–350–500
Continuous – General
AC4010K
0,5–2,0–6,0
0,10–0,25–0,40
160–250–400
Interrupted
AC4015K
0,5–2,0–6,0
0,10–0,30–0,50
140–200–350
Heavy Interrupted
AC420K
0,5–2,0–6,0
0,10–0,30–0,60
80–150–220