VCMT-TM – INNOT insert

VCMT-TM

35° positive rhombic insert (VCMT) for semi-finishing of steels and stainless steels, external and boring, with TM chipbreaker and INNOT CVD and PVD grades.

ISO P · M
Semi-finishing
CVD · PVD
★ IT8115 · IT8225 · IT7225

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Technical data sheet PDFCutting data, sizes and grades

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INNOT grades

CVD, PVD and cermet for ISO P, M, K, S

Standard ISO designation

Compatible with the insert holders you use

Technical support

We help you choose grade and chipbreaker

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Description

ISO specifications

ISO RADIUS (RE) AVAILABLE GRADES CHIPBREAKER
VCMT1103 0.4 – 0.8 IT8115 – IT8125 – IT8225 – IT7125 – IT7225 TM
VCMT1604 0.4 – 0.8 – 1.2 IT8115 – IT8125 – IT8225 – IT7125 – IT7225 TM

TM chipbreaker data sheet

Operation Semi-finishing
ISO material P (steels), M (stainless steels)
Tolerance M
Features Chipbreaker for semi-finishing, suitable for external and internal turning of steels and stainless steels. 7° positive insert (shape V, 35° rhombic) with screw clamping: the slimmest tip in the range, for copy turning and profiling of grooves and radii. SVQC (107.5°) and SVUC (93°) type toolholders.

Available INNOT grades

Grade ISO Coating Composition Application
IT8115 ★ P CVD TiN + MT-TiCN + Al₂O₃ Continuous and lightly interrupted cuts. Finishing and semi-finishing of carbon and alloy steels.
IT8125 P CVD TiN + MT-TiCN + Al₂O₃ Interrupted and continuous cuts on steel. The reinforced substrate limits plastic deformation at high temperature.
IT8225 ★ P CVD TiN + MT-TiCN + Al₂O₃ First-choice grade for steel, very versatile. Multilayer coating with excellent wear resistance and toughness.
IT7125 M PVD AlTiN Universal grade for turning stainless steel in continuous and interrupted cuts. Smooth, low-friction coating, high nano-hardness and excellent oxidation resistance.
IT7225 ★ M PVD AlTiSiN + TiSiN First-choice grade for turning stainless steel. Nano-gradient coating on a sub-micron grain substrate: excellent wear resistance and toughness.

★ Recommended grade for this chipbreaker. CVD and PVD = vapour deposition coatings (chemical and physical). ISO P = steels, ISO M = stainless steels.

Recommended cutting data

Printable cutting data tableAll the data on this page in an INNOT PDF to keep in the shop.Download PDF
External turning of steels (ISO P) – TM chipbreaker
Material Condition Vc (m/min) by grade fn (mm/rev) ap (mm)
Structural steels ≤ 180 HB
(S235, C45…)		 Stable IT8115: 215 – 415
IT8125: 190 – 355
IT8225: 205 – 375		 0.15 – 0.35 0.50 – 3.00
Structural steels ≤ 180 HB
(S235, C45…)		 Average IT8115: 200 – 405
IT8125: 185 – 350
IT8225: 195 – 360		 0.15 – 0.30 0.50 – 3.00
Structural steels ≤ 180 HB
(S235, C45…)		 Difficult IT8125: 185 – 350
IT8225: 195 – 360		 0.15 – 0.25 0.50 – 3.00
Carbon and alloy steels 180 – 280 HB
(41Cr4, 42CrMo4…)		 Stable IT8115: 215 – 415
IT8125: 190 – 355
IT8225: 205 – 375		 0.15 – 0.35 0.50 – 3.00
Carbon and alloy steels 180 – 280 HB
(41Cr4, 42CrMo4…)		 Average IT8115: 200 – 405
IT8125: 185 – 350
IT8225: 195 – 360		 0.15 – 0.30 0.50 – 3.00
Carbon and alloy steels 180 – 280 HB
(41Cr4, 42CrMo4…)		 Difficult IT8125: 185 – 350
IT8225: 195 – 360		 0.15 – 0.25 0.50 – 3.00
Quenched and tempered steels ≥ 280 HB Stable IT8115: 215 – 420
IT8225: 190 – 395		 0.15 – 0.35 0.50 – 3.00
Quenched and tempered steels ≥ 280 HB Average IT8115: 215 – 420
IT8225: 190 – 395		 0.15 – 0.30 0.50 – 3.00

Guide values for the TM chipbreaker (positive inserts), given only for the grades available in this product.

External turning of stainless steel (ISO M) – TM chipbreaker
Material Condition Vc (m/min) by grade fn (mm/rev) ap (mm)
Austenitic stainless steel ≤ 200 HB
(AISI 304, 316…)		 Stable IT7125: 80 – 150
IT7225: 80 – 150		 0.15 – 0.35 0.50 – 3.00
Austenitic stainless steel ≤ 200 HB
(AISI 304, 316…)		 Average IT7125: 80 – 150
IT7225: 80 – 150		 0.15 – 0.30 0.50 – 3.00
Austenitic stainless steel ≤ 200 HB
(AISI 304, 316…)		 Difficult IT7125: 80 – 150
IT7225: 80 – 150		 0.15 – 0.25 0.50 – 3.00
Martensitic stainless steel > 200 HB
(AISI 431, 420…)		 Stable IT7125: 70 – 140
IT7225: 70 – 140		 0.15 – 0.35 0.50 – 3.00
Martensitic stainless steel > 200 HB
(AISI 431, 420…)		 Average IT7125: 70 – 140
IT7225: 70 – 140		 0.15 – 0.30 0.50 – 3.00
Martensitic stainless steel > 200 HB
(AISI 431, 420…)		 Difficult IT7125: 70 – 140
IT7225: 70 – 140		 0.15 – 0.25 0.50 – 3.00

Guide values for the TM chipbreaker (positive inserts), given only for the grades available in this product.

Internal turning / boring (ISO P)
Material Operation Cut RE Vc (m/min)
min – recomm. – max		 ap (mm)
min – recomm. – max		 fn (mm/rev)
min – recomm. – max
Low carbon / low alloy
≤ 300 HB		 Precision finishing Continuous 0.4 250 – 300 – 350 0.05 – 0.3 – 0.5 0.03 – 0.1 – 0.15
Interrupted 120 – 170 – 220 0.05 – 0.3 – 0.5 0.03 – 0.1 – 0.15
Finishing Continuous 0.4 – 0.8 200 – 250 – 300 0.2 – 0.5 – 1.0 0.05 – 0.1 – 0.2
Interrupted 150 – 200 – 250 0.2 – 0.5 – 1.0 0.05 – 0.1 – 0.2
Finishing – semi-roughing Continuous 0.4 – 0.8 150 – 200 – 250 0.5 – 1.0 – 2.0 0.1 – 0.15 – 0.25
Interrupted 100 – 150 – 200 0.5 – 1.0 – 1.5 0.1 – 0.15 – 0.2
Semi-roughing Continuous 0.4 – 0.8 100 – 150 – 200 1.0 – 1.5 – 2.5 0.1 – 0.15 – 0.3
Interrupted 80 – 120 – 150 1.0 – 1.5 – 2.0 0.1 – 0.15 – 0.2
Medium carbon / medium alloy
≤ 300 HB		 Precision finishing Continuous 0.4 150 – 200 – 250 0.05 – 0.3 – 0.5 0.03 – 0.1 – 0.15
Interrupted 120 – 140 – 170 0.05 – 0.3 – 0.5 0.03 – 0.1 – 0.15
Finishing Continuous 0.4 – 0.8 150 – 200 – 250 0.2 – 0.5 – 1.0 0.05 – 0.1 – 0.2
Interrupted 120 – 180 – 200 0.2 – 0.5 – 1.0 0.05 – 0.1 – 0.2
Finishing – semi-roughing Continuous 0.4 – 0.8 120 – 180 – 220 0.5 – 1.0 – 2.0 0.1 – 0.15 – 0.25
Interrupted 100 – 150 – 200 0.5 – 1.0 – 1.5 0.1 – 0.15 – 0.2
Semi-roughing Continuous 0.4 – 0.8 100 – 150 – 200 1.0 – 1.5 – 2.5 0.1 – 0.15 – 0.3
Interrupted 80 – 120 – 150 1.0 – 1.5 – 2.0 0.1 – 0.15 – 0.2
High carbon / alloy
≤ 280 HB		 Precision finishing Continuous 0.4 120 – 150 – 180 0.05 – 0.3 – 0.5 0.03 – 0.1 – 0.15
Interrupted 110 – 130 – 160 0.05 – 0.3 – 0.5 0.03 – 0.1 – 0.15
Finishing Continuous 0.4 – 0.8 120 – 150 – 180 0.2 – 0.5 – 1.0 0.05 – 0.1 – 0.2
Interrupted 100 – 120 – 150 0.2 – 0.5 – 1.0 0.05 – 0.1 – 0.2
Finishing – semi-roughing Continuous 0.4 – 0.8 120 – 150 – 180 0.5 – 1.0 – 2.0 0.1 – 0.15 – 0.25
Interrupted 100 – 120 – 150 0.5 – 1.0 – 1.5 0.1 – 0.15 – 0.2
Semi-roughing Continuous 0.4 – 0.8 100 – 120 – 150 1.0 – 1.5 – 2.5 0.1 – 0.15 – 0.3
Interrupted 80 – 100 – 120 1.0 – 1.5 – 2.0 0.1 – 0.15 – 0.2

Recommended grades: IT8115 – IT8225. Minimum machining diameter: Ø10 mm. ap = radial depth of cut.

Internal turning / boring (ISO M)
Material Operation Cut RE Vc (m/min)
min – recomm. – max		 ap (mm)
min – recomm. – max		 fn (mm/rev)
min – recomm. – max
Austenitic stainless steel
≤ 220 HB		 Finishing Continuous 0.4 – 0.8 120 – 150 – 180 0.2 – 0.5 – 0.8 0.05 – 0.08 – 0.1
Interrupted 100 – 120 – 150 0.2 – 0.5 – 0.8 0.05 – 0.08 – 0.1
Semi-finishing Continuous 0.4 – 0.8 120 – 150 – 180 0.5 – 1.0 – 1.5 0.05 – 0.1 – 0.2
Interrupted 100 – 120 – 150 0.5 – 1.0 – 1.5 0.05 – 0.1 – 0.2
Precipitation-hardening stainless steel
≤ 300 HB		 Finishing Continuous 0.4 – 0.8 80 – 100 – 120 0.2 – 0.7 – 1.0 0.05 – 0.1 – 0.15
Interrupted 60 – 80 – 100 0.2 – 0.7 – 1.0 0.05 – 0.1 – 0.15
Semi-finishing Continuous 0.4 – 0.8 80 – 100 – 120 0.5 – 1.0 – 1.5 0.05 – 0.1 – 0.2
Interrupted 60 – 80 – 100 0.5 – 1.0 – 1.5 0.05 – 0.1 – 0.2

Recommended grades: IT7125 – IT7225. Guide values for positive inserts, machining diameter over Ø10 mm. ap = radial depth of cut.

Depth of cut and insert size. The TM chipbreaker range goes up to ap 3 mm. The 35° shape has the slimmest tip in the range: with VCMT11 (11 mm cutting edge) keep the depth of cut within about 1/4 of the edge, i.e. about 2.5 mm. With VCMT16 (16.5 mm cutting edge) the full range can be used.