665M17 / EN34 Black 2% low carbon nickel molybdenum case hardening steel


BS970: 1955 BS970: 1991 COLOUR CODE DESCRIPTION
EN34665M17orange/redBlack 2% low carbon nickel molybdenum case hardening steel


CHEMICAL ANALYSIS
Car0.14 / 0.20
Sil0.10 / 0.40
Mang0.35 / 0.75
Moly0.20 / 0.30
Nick1.50 / 2.00


INTERNATIONAL SPECIFICATION COMPARISON
BRITISH BS 970:1991 665M17
BRITISH BS 970:1955 EN34
GERMAN DIN  
FRENCH AFNOR 
SWEDISH SS 
AMERICAN SAE4615
EUROPEAN STEEL NO. 
EUROPEAN STEEL NAME 
EUROPEAN STANDARD 


QUICK VIEW SYSTEM
MACHINEABILITY75
WELDABILITYSatisfactory
HARDENABILITYMedium strength case hardening
SELECTION GUIDE AND USAGE EXAMPLESAfter hardening produces good case & core strength around 45 t/sq". Transmission parts


SIZES.