Medium carbon steels (1045, 4140, etc.) Hardness:HB150 to 300

Application	Precision finishing		Finishing		Medium cutting		Medium to heavy cutting		Heavy cutting
Cutting speed (SFM)	260~500~660		260~500~660		160~600~730		260~430~600		260~330~500
Depth of cut (in)	.002~.012~.02		.012~.04~.08		.04~.12~.2		.12~.16~.24		.16~.24~.47
Feed (in/rev)	.0012~.004~.006		.004~.008~.01		.008~.012~.02		.012~.016~.024		.024~.028~.047
Recommended Insert
Rhombic (80°)		NS530		NS530		T7025		T7025		T7025
		CNGG		CNMG		CNMG		CNMG		CNMG
		431-01		432-TS		432-TM		543-TH		644-TH
Rhombic (55°)		NS530		NS530		T7025
		DNGG		DNMG		DNMG
		431-01		431-TS		432-TM
Square (90°)		NS530		NS530		T7025		T7025		T7025
		SNGG		SNMG		SNMG		SNMG		SNMG
		431-01		432-TS		432-TM		543-TH		644-TH
Triangular (60°)		NS530		NS530		T7025
		TNGG		TNMG		TNMG
		331-01		331-TS		332-TM
Rhombic (35°)		NS530		NS530		T7025
		VNGG		VNMG		VNMG
		331-01		331-TS		332-TM
Trigon (80°)		NS530		NS530		T7025
		WNGG		WNMG		WNMG
		431-01		431-TS		432-TM

---