High speed machinability steels - Maxival high sulphur content steel

High speed machinability steels with high sulphur content

Austenitic Stainless Steel


CUTTING DATA RECOMMENDATIONS MAXIVAL 304/304L

VALBRUNA GRADE	STANDARD STEEL	CONDITION

MVAISDE/MVAISL	-AISI 304/304L	-ANNEALED
	-W.No. 1.4301/1.4307
	-EN 10088-3=X2CrNi 18-9
	-EN 10088-3=X5CrNi 18-10


FEED	CUTTING DEPTH	CUTTING SPEED
( mm/rev )	( mm )	Cemented Carbide	High speed steel
<0.3	<2	200 � 250	35
0,3 - 0,5	2 - 5	150 � 180	30
0,5 - 1,0	5 - 10	90 � 100	20
		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)
1	3200 -3800	10 - 12	0.04		- When drilling with short NC drills,
3	1600 - 1800	15 - 17	0.10		the feed can be increased by about 40%
5	1080 - 1270	17 - 20	0.20		- When drilling to depths more than 4 x
10	540 - 640	17 - 20	0.30		diameter, remove chips
15	360 - 430	17 - 20	0.30		- When using TiN-coated high-speed steel
20	270 - 320	17 - 20	0.35		drills, the cutting speed can be increased
30	180 - 220	17 - 20	0.35		by about 10%

- Indexable insert drills, cemented carbide

Drill dia.	Cutting Speed	Feed	Type of cemented		N.B
(mm)	(m/min)	(mm/rev)	carbide		Cutting data for indexable-insert drill-hole
20	200 - 250	0.10	P25	P15	drilling is highly dependent on the
30	200 - 250	0.12	P25	P15	make of the drills used;
40	200 - 250	0.15	P25	P15	the manufacturer's recommendations
50	200 - 250	0.20	P25	P15	must also be considered


- Cemented carbide
Machining	Cutting Speed	Feed	Type of cemented
	(m/min)	mm/tooth	carbide
Face milling	150 - 240	0.15 - 0.30	P10 - P30
Side milling	150 - 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	25 - 30	0.12 - 0.20
Plain milling	25 - 30	0.12 - 0.20
End milling	25 - 30	0.02 - 0.15
Side milling	25 - 30	0.12 - 0.20



	Tool		Cutting Speed (m/min)
	Cemented Carbide ( P10 - P30 )		90 - 130
	High-speed steel		15 - 20




Tool	Cutting Speed (m/min)	Feed (mm/rev)
Cemented Carbide ( P30 )	100 - 150	0,08 - 0,20
High-speed steel	30	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