DF-3 (Arne) 

 Assab Assab DF3 chemical composition% 

 C 
 Mn 
 Cr 
 W 

 0.9 
 1.2 
 0.85 
 0.55 






 Assab Assab DF3 main features: 

 DF-3 is a cold applied to a variety of occasions, manganese - chromium - tungsten tool steel commonly used oil-offend, its features are: 


 1 excellent mechanical processing 
 2 insult a hard time, good dimensional stability 
 3 insult hard and tempered by the high surface hardness with good toughness and body 


 These combined features make the DF-3 made a good tool or die life, and economic benefits. 





 Assab Assab DF3 main purposes: 



 Die for: 
 Material thickness to be machined 
 HRC 

 Punching, punching, 
 Perforated, cut, 
 Cutting, trimming, 
 Cut cut 
 Less than 3 mm 
 3-6 mm 
 6-10 mm 
 60-62 
 56-60 
 54-56 

 Cold cut short 
 The cutting and trimming forgings, hot cut 
 Trimming die 
 54-60 

 Bending, forming, stretching, curling, 
 Spin forming 
 56-62 

 Small pressure die, gauge, measuring 
 Lathe thimble, guide sleeve, plunger, 
 56-60 

 Pinion, piston, nozzle, cam 
 58-62 






 Assab Assab DF3 physical properties: 

 Temperature 
 20 ℃ 
 200 ℃ 
 400 ℃ 

 Density 
 kg/m3 

 7800 

 7750 

 7700 

 Modulus 
 N/mm2 

 190 000 

 185 000 

 170 000 

 Coefficient of thermal expansion 
 From 20 ℃ / ℃ 

 - 

 11.7 * 10-6 

 11.4 * 10-6 

 Thermal conductivity 
 W / m ℃ 

 32 

 33 

 34 

 Specific heat 
 j / kg ℃ 

 460 

 - 

 - 






 Assab Assab DF3 compressive strength: 

 Hardness 
 HRC 
 Compressive yield strength Rc0.2 
 N/mm2 

 62 
 2250 

 60 
 2200 

 55 
 2050 

 50 
 1700 

 45 
 1250 











 Quality / Safety Certification ︰ provide raw steel materials guarantee quality, ensure quality 
 Factory state ︰ HB190