High speed machinability steels - Maxival high sulphur content steel

High speed machinability steels with high sulphur content

Austenitic Stainless Steel


CUTTING DATA RECOMMENDATIONS MAXIVAL 316 - MVAPMDE2

VALBRUNA GRADE	STANDARD STEEL	CONDITION

MVAPMD2	-AISI 316	-ANNEALED
	-W.No. 1.4436
	-EN 10088=X5CrNiMo 17 13 3


FEED	CUTTING DEPTH	CUTTING SPEED
( mm/rev )	( mm )	Cemented Carbide	High speed steel
<0.3	<2	190 - 240	30
0.3 - 0.5	2 - 5	140 - 170	25
0.5 - 1.0	5 - 10	80 - 90	15
		P10 - P20 - P35


- Twist drills, high-speed steel
- Point angle: 135° ; Helix angle: 40°

Drill dia.	Speed	Cutting Speed	Feed		N.B
(mm)	(rev/min )	(m/min)	(mm/rev)		- Cooling and cutting liquid feed:
1	3200 -3800	10 - 12	0.05		ample about 10% emulsion
3	1270 - 1590	12 - 15	0.10		- When drilling with short NC drills,
5	760 - 950	12 - 15	0.20		the feed can be increased by about 40%
10	380 - 470	12 - 15	0.30		- When drilling to depths more than 4 x diameter, remove chips
15	250 - 320	12 - 15	0.35		- When using TiN-coated high-speed steel
20	190 - 240	12 - 15	0.40		drills, the cutting speed can be increased
30	130 - 160	12 - 15	0.40		by about 10%

- Indexable insert drills, cemented carbide

Drill dia.	Cutting Speed	Feed	Type of cemented		N.B
(mm)	(m/min)	(mm/rev)	carbide		- Cooling and cutting liquid feed:
20	180 - 210	0.10	P25	P15	Liquid pressure: >0,3Mpa (3Kp/cmq)
30	180 - 210	0.12	P25	P15	Liquid amount : >25 1/min
40	180 - 210	0.15	P25	P15	Cutting data for indexable-insert drill-hole
50	180 - 210	0.20	P25	P15	drilling is highly dependent on the make of the drills used; the manufacturer's recommendations must also be considered


- Cemented carbide
Machining	Cutting Speed	Feed	Type of cemented
	(m/min)	mm/tooth	carbide
Face milling	150 - 250	0.15 - 0.30	P10 - P30
Side milling	180 - 240	0.25 - 0.30	P10 - P30
End milling	150 - 220	0.10 - 0.20	P10 - P30
End milling (solid cemented carbide)	50 - 100	0.05 - 0.20	P40

- High speed steel
Machining	Cutting Speed (m/min)	Feed (mm/tooth)
Face milling	20 - 25	0.12 - 0.20
Plain milling	20 - 25	0.12 - 0.20
End milling	20 - 25	0.02 - 0.15
Side milling	20 - 25	0.12 - 0.20



	Tool		Cutting Speed (m/min)
	Cemented Carbide ( P10 - P30 )		90 - 130
	High-speed steel		12 - 15




Tool	Cutting Speed (m/min)	Feed (mm/rev)
Cemented Carbide ( P30 )	90 - 140	0.10 - 0.20
High-speed steel	25	0.05


Ream dia. ( mm )	Cutting Speed ( m/min )
	Cemented carbide ( P30)	High-speed steel	Feed ( mm/rev )
<10	50	10 - 15	0.10 - 0.20
10 - 20	50	10 - 15	0.30
>20	50	10 - 15	0.30 - 0.40

N.B: The cutting data is to be considered as base values that must be adapted to local conditions.
The stated cutting data are based on tool life of 15 minutes for cemented carbides and 60 minutes for high-speed steel.
Coil and lubrificant: Emulsion or cutting oil.

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High speed machinability steels with high sulphur content

Austenitic Stainless Steel