LESCALLOY BG42 VIM-VAR steel is a martensitic, stainless high speed steel that combines the tempering, hot hardness and hardness retention characteristics of M50 high speed steel with the corrosion and oxidation resistance of 440C stainless. BG42 is double vacuum melted to consistently assure high cleanliness and superior properties. It is ideal for aerospace bearings, critical applications, cutlery and other uses that require excellent wear and corrosion resistance.

AISI BG 42      
SIZE RANGE   3/32" - 5/16"  
GRADES:   3, 5, 10, 25  
       
CHEMICAL COMPOSITION      
CARBON   1.15% MAX.  
CHROMIUM   14.5%  
IRON   78.35%  
MANGANESE   0.50% MAX.  
MOLYBDENUM   4.0%  
SILICON   0.30% MAX.  
VANADIUM   1.02% MAX.  
       
MECHANICAL PROPERTIES      
DENSITY   0.280 LB/IN 3  
POISSONS RATIO   0.270%  
HARDNESS ROCKWELL C   56.5 @ TEMP 900°F  
    60 @ TEMP 600°F  
    63 @ TEMP 200°F  
MODULUS IN ELASTICITY   26190 @ TEMP 900°F  
MODULUS OF RIGIDITY   10210 @ TEMP 900°F  
       
PHYSICAL CHARACTERISTICS      
CORROSION RESISTANCE   EXCELLENT  
       
GENERAL USAGE      
AEROSPACE BEARINGS, CRITICAL APPLICATIONS & WEAR RESISTANCE