Machining DataSheet for

Cast Iron GG25 Menu:

Machining Guidelines
Equivalent Standards
Chemical Composition
Cutting Speeds Recommendation
Recommended Carbide Grades
Cutting Edge Geometry

General Information:
Material Group		K - Cast Iron
Sub-Group		Cast Iron
Hardness		220.0 HB
Tensile Strength		730 [N/mm^2]
Machinability		112%

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Machining Cast Iron GG25

GG25 is a Grey cast iron material with a Machinability rating of 112% and Hardness 220 HB.

Grey cast Iron is the most britle cast iron sub-group. It is the easiest to machine and produces tiny chips even when using a flat insert without a chip breaker

In Cast Iron, the material standards also define the allowed hardness range, and hardness is the top-ranking factor affecting the machinability ratings. For example, nodular cast iron is known to be harder to machine compared with grey cast iron. However, if a grey cast iron alloy has a hardness of 300HB is will have lower machinability than nodular cast iron with 200HB.

Cast iron is very brittle and produces short chips. Therefore there is no need for a sharp cutting edge, and a strong geometry with a large honing or K-land is the best choice.

Summery:

For general Turning of Cast Iron GG25 at stable conditions use a grade with a Very Hard substrate and CVD coating.

In case you are running at a cutting speed that is lower than 490 SFM (150 m/min), it is better to use a grade with a

Very Hard substrate and PVD coating.

For general Milling use a grade with a Semi Hard substrate and CVD coating.

For detailed carbide grades recommendations, check the Below Chart, or use the Grades Wizrad.

Recommended Cutting speed range for turning at stable conditions is 720 - 970 [SFM] / 220 - 295 [m/min].

Consider using CBN inserts. Although they cost more than twice, they enable increasing the cutting speed by 2-4 times (relative to carbide). Learn More ⇒

Recommended Cutting speed range for milling with stable clamping and short overhang is 490 - 660 [SFM] / 150 - 200 [m/min]

For detailed cutting speed recomendations, check the Below Table, or use our Speed and Feed Calculator.

Equivalent International Designations for Cast Iron GG25

Standard	Name
sae	A48-35B
wnr	0.6025
din	GG25
bs	Grade 250
ss	125-00
anfor	Ft25D
uni	G25
unf	FG25
js1	FC25

Chemical Composition for Cast Iron GG25

Sorry, Not Availble for this Material

Cutting Speeds Recomendations for Cast Iron GG25

* Click on the speeds below for higher precision in specific conditions!

Application	Vc (m/min)	Vc (SFM)
Turning	220-295	720-970
Milling	150-200	490-660
Parting	110-150	360-490
Grooving	150-205	490-670
Drilling	125-165	410-540

Important! The speed estimation is given for an ideal situation:

Most suitable carbide grade
Stable tool clamping
Stable workpiece clamping
Good quality raw material
A short overhang of the cutting tool.
Nominal hardness of the material.
etc.

Click on the speeds in the above table to get better precision for specific parameters
Or use our Speed and Feed Calculator

Recommended Carbide Grades for Cast Iron GG25

Turning
Parting Off
Grooving
Milling Indexable

* If you do nott understand the below table? Read This Explanation to make the most out of it!

Grade for Turning

Filter Brand:

Brand	Grade	ISO	Material	app	App	Coating	Apps Range	05	10	15	20	25	30	35	40	45
Sandvik	GC3205	K	K - Cast Iron	T	Turning	CVD	K05 - K15	K	K	K
Sandvik	GC3210	K	K - Cast Iron	T	Turning	CVD	K10 - K25		K	K	K	K
Sandvik	GC3225	K	K - Cast Iron	T	Turning	CVD	K25 - K40					K	K	K	K
Iscar	IC807 (IC907)	K	K - Cast Iron	T	Turning	PVD	K05 - K25	K	K	K	K	K
Iscar	IC5005	K	K - Cast Iron	T	Turning	CVD	K05 - K15	K	K	K
Iscar	IC5010 (IC428)	K	K - Cast Iron	T	Turning	CVD	K10 - K25		K	K	K	K
Iscar	IC830 (IC328)	K	K - Cast Iron	T	Turning	PVD	K25 - K45					K	K	K	K	K
Iscar	IC8150	K	K - Cast Iron	T	Turning	CVD	K25 - K35					K	K	K
Kennametal	KCK05	K	K - Cast Iron	T	Turning	CVD	K05 - K15	K	K	K
Kennametal	KCU10 (KC5010)	K	K - Cast Iron	T	Turning	PVD	K05 - K20	K	K	K	K
Kennametal	KCK15B (KCK15)	K	K - Cast Iron	T	Turning	CVD	K10 - K20		K	K	K
Kennametal	KCK20	K	K - Cast Iron	T	Turning	CVD	K15 - K30			K	K	K	K
Kennametal	KCU25 (KC5025)	K	K - Cast Iron	T	Turning	PVD	K20 - K30				K	K	K
Kennametal	KCP10B (KCP10)	K	K - Cast Iron	T	Turning	CVD	K25 - K35					K	K	K
Kennametal	KCP25B (KCP25)	K	K - Cast Iron	T	Turning	CVD	K30 - K40						K	K	K
Walter	WKK10S	K	K - Cast Iron	T	Turning	CVD	K05 - K20	K	K	K	K
Walter	WKK20S	K	K - Cast Iron	T	Turning	CVD	K10 - K30		K	K	K	K	K
Seco	TH1500	K	K - Cast Iron	T	Turning	CVD	K05 - K10	K	K
Seco	TK0501	K	K - Cast Iron	T	Turning	CVD	K05 - K20	K	K	K	K
Seco	TK1501	K	K - Cast Iron	T	Turning	CVD	K10 - K25		K	K	K	K
Seco	CP500	K	K - Cast Iron	T	Turning	PVD	K15 - K30			K	K	K	K
Seco	CP600	K	K - Cast Iron	T	Turning	PVD	K25 - K45					K	K	K	K	K
Seco	TP0501	K	K - Cast Iron	T	Turning	CVD	K25 - K35					K	K	K
Tungaloy	T5105	K	K - Cast Iron	T	Turning	CVD	K05 - K15	K	K	K
Tungaloy	T5115	K	K - Cast Iron	T	Turning	CVD	K10 - K20		K	K	K
Tungaloy	T515	K	K - Cast Iron	T	Turning	CVD	K10 - K20		K	K	K
Tungaloy	T5125	K	K - Cast Iron	T	Turning	CVD	K15 - K30			K	K	K	K
Mitsubishi	MC5005 (UC5105)	K	K - Cast Iron	T	Turning	CVD	K05 - K15	K	K	K
Mitsubishi	MC5015 (UC5115)	K	K - Cast Iron	T	Turning	CVD	K10 - K25		K	K	K	K
Mitsubishi	VP15TF	K	K - Cast Iron	T	Turning	PVD	K20 - K35				K	K	K	K
Sumitomo	AC4010K (AC405K)	K	K - Cast Iron	T	Turning	CVD	K05 - K15	K	K	K
Sumitomo	AC1030U	K	K - Cast Iron	T	Turning	PVD	K10 - K30		K	K	K	K	K
Sumitomo	AC4015K	K	K - Cast Iron	T	Turning	CVD	K10 - K25		K	K	K	K
Sumitomo	AC420K	K	K - Cast Iron	T	Turning	CVD	K15 - K30			K	K	K	K

Grade for Parting Off

Filter Brand:

Brand	Grade	ISO	Material	app	App	Coating	Apps Range	05	10	15	20	25	30	35	40	45
Sandvik	GC4325	K	K - Cast Iron	P	Parting	CVD	K10 - K20		K	K	K
Sandvik	GC1135	K	K - Cast Iron	P	Parting	PVD	K20 - K40				K	K	K	K	K
Iscar	IC807 (IC907)	K	K - Cast Iron	P	Parting	PVD	K05 - K15	K	K	K
Iscar	IC808 (IC908)	K	K - Cast Iron	P	Parting	PVD	K10 - K25		K	K	K	K
Iscar	IC830 ( IC328)	K	K - Cast Iron	P	Parting	PVD	K20 - K40				K	K	K	K	K
Kennametal	KCU10	K	K - Cast Iron	P	Parting	PVD	K05 - K15	K	K	K
Kennametal	KCU25	K	K - Cast Iron	P	Parting	PVD	K15 - K30			K	K	K	K
Walter	WKP13S	K	K - Cast Iron	P	Parting	CVD	K05 - K20	K	K	K	K
Walter	WKP23S	K	K - Cast Iron	P	Parting	CVD	K10 - K30		K	K	K	K	K
Walter	WKP33S	K	K - Cast Iron	P	Parting	CVD	K20 - K40				K	K	K	K	K
Seco	CP500	K	K - Cast Iron	P	Parting	PVD	K20 - K40				K	K	K	K	K
Seco	CP600	K	K - Cast Iron	P	Parting	PVD	K40 - K50								K	K
Tungaloy	GH130	K	K - Cast Iron	P	Parting	PVD	K25 - K40					K	K	K	K
Tungaloy	AH725	K	K - Cast Iron	P	Parting	PVD	K25 - K30					K	K
Mitsubishi	VP10RT	K	K - Cast Iron	P	Parting	PVD	K05 - K15	K	K	K
Mitsubishi	VP20RT	K	K - Cast Iron	P	Parting	PVD	K10 - K25		K	K	K	K
Mitsubishi	VP30RT	K	K - Cast Iron	P	Parting	PVD	K20 - K40				K	K	K	K	K
Sumitomo	AC425K	K	K - Cast Iron	P	Parting	CVD	K10 - K25		K	K	K	K
Sumitomo	AC520U	K	K - Cast Iron	P	Parting	PVD	K15 - K30			K	K	K	K
Sumitomo	AC1030U (AC530U)	K	K - Cast Iron	P	Parting	PVD	K20 - K40				K	K	K	K	K

Grade for Grooving

Filter Brand:

Brand	Grade	ISO	Material	app	App	Coating	Apps Range	05	10	15	20	25	30	35	40
Sandvik	GC4325	K	K - Cast Iron	G	Grooving	CVD	K10 - K40		K	K	K	K	K	K	K
Iscar	IC807 (IC907)	K	K - Cast Iron	G	Grooving	PVD	K05 - K15	K	K	K
Iscar	IC5010 (IC428)	K	K - Cast Iron	G	Grooving	CVD	K15 - K25			K	K	K
Iscar	IC808 (IC908)	K	K - Cast Iron	G	Grooving	PVD	K15 - K30			K	K	K	K
Iscar	IC8250	K	K - Cast Iron	G	Grooving	CVD	K25 - K40					K	K	K	K
Kennametal	KCU10	K	K - Cast Iron	G	Grooving	PVD	K05 - K15	K	K	K
Kennametal	KCU25	K	K - Cast Iron	G	Grooving	PVD	K15 - K30			K	K	K	K
Kennametal	KC5025	K	K - Cast Iron	G	Grooving	PVD	K20 - K30				K	K	K
Kennametal	KCP25B (KCP25)	K	K - Cast Iron	G	Grooving	CVD	K30 - K40						K	K	K
Walter	WKP13S	K	K - Cast Iron	G	Grooving	CVD	K05 - K20	K	K	K	K
Walter	WKP23S	K	K - Cast Iron	G	Grooving	CVD	K10 - K30		K	K	K	K	K
Walter	WKP33S	K	K - Cast Iron	G	Grooving	CVD	K20 - K40				K	K	K	K	K
Seco	TGK1500	K	K - Cast Iron	G	Grooving	CVD	K10 - K20		K	K	K
Seco	CP500	K	K - Cast Iron	G	Grooving	PVD	K15 - K30			K	K	K	K
Tungaloy	T515	K	K - Cast Iron	G	Grooving	CVD	K10 - K20		K	K	K
Tungaloy	AH725	K	K - Cast Iron	G	Grooving	PVD	K25 - K30					K	K
Tungaloy	GH130	K	K - Cast Iron	G	Grooving	PVD	K25 - K40					K	K	K	K
Mitsubishi	VP10RT	K	K - Cast Iron	G	Grooving	PVD	K05 - K15	K	K	K
Mitsubishi	MY5015	K	K - Cast Iron	G	Grooving	CVD	K10 - K25		K	K	K	K
Mitsubishi	VP20RT	K	K - Cast Iron	G	Grooving	PVD	K20 - K40				K	K	K	K	K
Sumitomo	AC425K	K	K - Cast Iron	G	Grooving	CVD	K10 - K25		K	K	K	K
Sumitomo	AC520U	K	K - Cast Iron	G	Grooving	PVD	K15 - K30			K	K	K	K
Sumitomo	AC1030U (AC530U)	K	K - Cast Iron	G	Grooving	PVD	K20 - K40				K	K	K	K	K

Grade for Milling (Indexable)

Filter Brand:

Brand	Grade	ISO	Material	app	App	Coating	Apps Range	05	10	15	20	25	30	35	40	45
Sandvik	GC3330	K	K - Cast Iron	M	Milling	CVD	K10 - K25		K	K	K	K
Sandvik	GC3040	K	K - Cast Iron	M	Milling	CVD	K25 - K40					K	K	K	K
Iscar	IC5100	K	K - Cast Iron	M	Milling	CVD	K05 - K25	K	K	K	K	K
Iscar	IC810 (IC910)	K	K - Cast Iron	M	Milling	PVD	K15 - K35			K	K	K	K	K
Kennametal	KCK15	K	K - Cast Iron	M	Milling	CVD	K10 - K20		K	K	K
Kennametal	KC520M	K	K - Cast Iron	M	Milling	PVD	K15 - K25			K	K	K
Kennametal	KCPK30	K	K - Cast Iron	M	Milling	CVD	K25 - K40					K	K	K	K
Walter	WAK15	K	K - Cast Iron	M	Milling	CVD	K05 - K25	K	K	K	K	K
Walter	WKP25S (WKP25)	K	K - Cast Iron	M	Milling	CVD	K15 - K35			K	K	K	K	K
Walter	WKP35G	K	K - Cast Iron	M	Milling	CVD	K25 - K45					K	K	K	K	K
Seco	MK1500	K	K - Cast Iron	M	Milling	CVD	K05 - K30	K	K	K	K	K	K
Seco	MK2050	K	K - Cast Iron	M	Milling	PVD	K10 - K45		K	K	K	K	K	K	K	K
Tungaloy	T1215	K	K - Cast Iron	M	Milling	CVD	K10 - K25		K	K	K	K
Tungaloy	AH725	K	K - Cast Iron	M	Milling	PVD	K15 - K30			K	K	K	K
Tungaloy	AH120	K	K - Cast Iron	M	Milling	PVD	K15 - K30			K	K	K	K
Mitsubishi	MC5020	K	K - Cast Iron	M	Milling	CVD	K05 - K30	K	K	K	K	K	K
Mitsubishi	VP20RT	K	K - Cast Iron	M	Milling	PVD	K20 - K40				K	K	K	K	K
Sumitomo	XCK2000	K	K - Cast Iron	M	Milling	CVD	K05 - K20	K	K	K	K
Sumitomo	ACK2000 (ACK200)	K	K - Cast Iron	M	Milling	CVD	K10 - K25		K	K	K	K
Sumitomo	XCU2500	K	K - Cast Iron	M	Milling	CVD	K10 - K25		K	K	K	K
Sumitomo	ACU2500	K	K - Cast Iron	M	Milling	PVD	K10 - K35		K	K	K	K	K	K
Sumitomo	ACK3000 (ACK300)	K	K - Cast Iron	M	Milling	PVD	K15 - K30			K	K	K	K

Recommended Insert Cutting Edge Geometry for Cast Iron GG25

Honing Size:		0.05-0.10 mm / 0.002-0.004"
Rake Angle:		0° -0°
Land Angle:		Negative
Land Width:		0.30-0.40 mm / 0.012-0.016"

Learn more about carbide inserts Cutting-Edge Geometry Parameters.

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Machining DataSheet for

Machining Cast Iron GG25

Equivalent International Designations for Cast Iron GG25

Chemical Composition for Cast Iron GG25

Cutting Speeds Recomendations for Cast Iron GG25

* Click on the speeds below for higher precision in specific conditions!

Important! The speed estimation is given for an ideal situation:

Click on the speeds in the above table to get better precision for specific parameters
Or use our Speed and Feed Calculator

Recommended Carbide Grades for Cast Iron GG25

Grade for Turning

Grade for Parting Off

Grade for Grooving

Grade for Milling (Indexable)

Recommended Insert Cutting Edge Geometry for Cast Iron GG25

About the Machining Doctor

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Convert material standards:

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Convert material standards:

Machining Cast Iron GG25

Equivalent International Designations for Cast Iron GG25

Chemical Composition for Cast Iron GG25

Cutting Speeds Recomendations for Cast Iron GG25

* Click on the speeds below for higher precision in specific conditions!

Important! The speed estimation is given for an ideal situation:

Click on the speeds in the above table to get better precision for specific parametersOr use our Speed and Feed Calculator

Recommended Carbide Grades for Cast Iron GG25

Grade for Turning

Grade for Parting Off

Grade for Grooving

Grade for Milling (Indexable)

Recommended Insert Cutting Edge Geometry for Cast Iron GG25

About the Machining Doctor

Why Advertise with us?

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Click on the speeds in the above table to get better precision for specific parameters
Or use our Speed and Feed Calculator