High speed machinability steels with high sulphur content

High speed machinability steels Austenitic stainless steel Valbruna Stainless Steel

Austenitic Stainless Steel

Machinability
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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  

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Turning
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  

 

Drilling

- 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

 

Milling

- 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  


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


Cutting Off
         
         
Tool   Cutting Speed (m/min) Feed (mm/rev)  
Cemented Carbide ( P30 )   100 - 150 0,08 - 0,20  
High-speed steel   30 0.05  
         
         


Reaming
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.

If you need more technical information, please do not hesitate to contact our Quality Department: quality@valbruna.it


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