SC Speedcut end mill, ultra-hard steel 68 HRC, long DIN 6527L

Name: SC Speedcut end mill, ultra-hard steel 68 HRC, long DIN 6527L
Brand: Würth
SKU: 5443300861

Endmill SC UltraHRC DIN6527L 2xD/2xD50° TiAlN-S HA
CTR-SC-SP-DIN6527L-HS-TNS-HA-D4,0MM

Art.-no. 5443300861

EAN 4055375919552

All versions

Specification

Especially suited to machining hardened and high-strength steels. High rigidity allows for high feed rates and long service life, high helix angle produces an excellent surface finish on the workpiece. The end mill is used for peripheral milling (finishing). At shallow depths, front cutting is also possible by reducing the feed rate by 50 %.

Technical information


Product code	7277
Material to be processed	Cast metal, Hard and tough material
Diameter (d1)	4 mm
Shank diameter (d2)	6 mm
Standards	DIN 6527
Construction length	Long
Shank style	Cylindrical DIN 6535-HA
Cutting material	SC
Surface	TiAlN-S
Coolant supply	External
Twist angle	50°
Length (l1)	57 mm
Cutting edge length (l2)	11 mm
Number of cutting edges (Z)	6 PCS
Corner chamfer	0.05 mm
Tolerance of cutting edge diameter	e8
Tolerance of shank diameter	h5
Material of sub-group	Alloyed tempering steels < 1000 N/mm², Nitriding steels < 1300 N/mm², Grey cast iron, Malleable cast iron, Steels > 45 HRC

Cutting values for finishing contour
For dia. 4-10
Material designation	Tensile strength	Cooling	vc	fz
				Dia. 4	Dia. 5	Dia. 6	Dia. 8	Dia. 10
Tool steels	1100-1400 N/mm2	T	170	0,010	0,015	0,020	0,025	0,030
Hardened steels	40-48 HRC	T	150	0,010	0,015	0,020	0,030	0,035
	48-55 HRC	T	135	0,010	0,015	0,020	0,025	0,030
	55-60 HRC	T	120	0,008	0,012	0,015	0,025	0,030
	60-68 HRC	T	80	0,008	0,012	0,015	0,020	0,025
Wear resistant constructional steel	1350 N/mm2	T	170	0,010	0,015	0,020	0,025	0,025
Wear resistant constructional steel	1800 N/mm2	T	145	0,010	0,015	0,020	0,025	0,025
Cast iron	< 180 HB	T	200	0,015	0,022	0,030	0,040	0,055
Cast iron	> 180 HB	T	160	0,015	0,022	0,030	0,040	0,050
Spheroidal graphite, malleable iron	> 180 HB	T	190	0,015	0,022	0,030	0,040	0,055
Spheroidal graphite, malleable iron	> 260 HB	T	170	0,015	0,022	0,030	0,040	0,050

Legend
T= dry		a_e = 0.02xd1
v_c = cutting speed [m/min]
f_z = feed per tooth [mm/z]		a_p = 1.5xd1
a_e = cutting thickness (radial)
a_p = cutting thickness (axial)
The cutting speeds listed refer to all tool types according to DIN 6527K or DIN6527L. For XL Series end mills, it is recommended to reduce the cutting speed by 30%.

Cutting values for finishing contour
For dia. 12-20
Material designation	Tensile strength	Cooling	vc	fz
				Dia. 12	Dia. 14	Dia. 16	Dia. 20
Tool steels	1100–1400 N/mm2	T	170	0,035	0,035	0,040	0,045
Hardened steels	40-48 HRC	T	150	0,040	0,045	0,050	0,060
	48-55 HRC	T	135	0,035	0,040	0,045	0,055
	55-60 HRC	T	120	0,035	0,040	0,045	0,050
	60-68 HRC	T	80	0,030	0,030	0,035	0,040
Wear resistant constructional steel	1350 N/mm2	T	170	0,035	0,035	0,040	0,045
Wear resistant constructional steel	1800 N/mm2	T	145	0,035	0,035	0,040	0,040
Cast iron	< 180 HB	T	200	0,065	0,070	0,080	0,100
Cast iron	> 180 HB	T	160	0,060	0,065	0,070	0,090
Spheroidal graphite, malleable iron	> 180 HB	T	190	0,065	0,070	0,080	0,100
Spheroidal graphite, malleable iron	> 260 HB	T	170	0,060	0,065	0,070	0,090