SUMIBORON / Coated SUMIBORON CBN Grade Guidance
Cast Iron
Recommended Cutting Conditions
● Turning
Part Material
Recommended Cutting Conditions
Recommended Grade
Cutting Speed v
c (SFM)
Feed Rate (IPR)
Depth of Cut a p (Inch)
f
Material
Standard (Hardness)
330
3,300
6,600
≤ .039
.0039 - .0197
BN7000
1,650
6,600
FC200 to FC300 (HB ≤ 230)
.0039 - .0157 ≤ .0197 .0039 - .0394 ≤ .157 .0039 - .0197 ≤ .039 .0039 - .0314≤ .0787 .0039 - .0157 .0039 - .0157 ≤ .0197 ≤ .0236
Gray Cast Iron
BNS800
650
6,600
BN500
650
2,310
BN7000
650
2,650
Alloy Cast Iron
(HB ≥ 200)
L
BNS800
650
3,300
BN7000
FCD450
260 650
Up to FCD550
BNC500
500
1,650
Ductile Cast Iron
FCD600
.0039 - .0157 ≤ .0197
BNC500
Up to FCD700
650 400
Vermicular Cast Iron FCV(CGI)
Q
.0039 - .0157≤ .0157
BNC500
650
1,650
Cutting Oil: Use wet. (BNS800 can also be used dry) ● Milling
Part Material
Recommended Cutting Conditions
Recommended Grade
Cutting Speed v
c (SFM)
Feed Rate (IPR)
Depth of Cut a p (inch)
f
Material
Standard (Hardness)
330
3,300
6,600
.0039 - .0197
≤ .0197
BN7000
2,650
6,600
FC200 to FC300 (HB ≤ 200)
Gray Cast Iron
.0039 - .0394≤ .1575
BNS800
2,650
6,600
Cutting Oil: Use dry.
Performance
BN7000 / BNS800 / BN500 Gray Cast Iron Cutting Recommended Grade
● High Speed Continuous Cutting
● Interrupted Cutting
● Continuous Cutting
Breakage
.0040
.0118
.0039
Conventional CBN
.0032
Ceramics
D
BN7000
Competitor's solid product CBN
.0079
D D
D
D
.0024
BN500
D
BNS800
D
.0019
.0016
D
Able to Continue
.0039
D
D
.0008
D
D
D
0
40 80 120 160 200 Time in Cut (minutes)
0
25
50
75 100
0
1.66 3.33 5 6.67 8.33 10
11.67
Time in Cut (minutes)
Time in Cut (minutes)
Part Material: Cast Iron (Pearlite) Tool Cat. No.: 2NU-CNGA432 Cutting Conditions: v c =2,650 SFM,
Part Material: Cast Iron (Pearlite) Tool Cat. No.: SNG322 Cutting Conditions: v c =2,000 SFM,
Part Material: FC300 (Pearlite) Tool Cat. No.: SNG433 Cutting Conditions: v
f = .0059 IPR
f = .0118 IPR
c =1,650 SFM, a p = .0059" Wet
f =.0117 IPR
a p = .0079" Wet
a p = .0197" Dry
Recommended Grade
Recommended Grade
BNC500
BNS800 / BN7000
Turning Ductile Cast Iron
Milling Gray Cast Iron
● Cast Iron Milling
● FCD450
● FCD700
.0040
3,300
3,300
BNC500
D
D
D
.0032
BN7000
BNC500
D
D BN7000 Conventional CBN
D
D
D
D
D
D
D
D
D
D
D
D
D
D
.0024
D
D
D
D
D
D
D
D
.0016
D
D
D
D
D
D
BN7000
BN500
.0008
BN500
D
330
330
0
132
264
396
526 658
0
33
66
100
.3
3
30
300
Tool Life (ft. x 1000) Life Criterion v B max. = .0079”
Time in Cut (minutes) Life Criterion v B max. = .0079”
Cutting Length (inches)
Part Material: FCD450 (Continuous Cutting) Cutting Conditions: f = .0079 IPR, a
Part Material: FCD700 (Continuous Cutting) Cutting Conditions: f = .0079 IPR, a
Part Material: FC250 (Pearlite) Tool Cat. No.: FMU4100R SNEW1203ADTR Cutting Conditions: v c = 5,000 SFM,
p = .0079 IPR" Wet
p = .0079 IPR" Wet
f = .0079 IPR, a
p = .0118" Dry
L8
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