Austenitic Ductile Iron

  
    MinimumMinimum  Chemical  
Specifing Spec.Type:Class orTensileYield% Requirements %Notes:
Body:Number: Grade:StrengthStrengthElongBHNSiMnPNiCr  
    PSI:PSI:  Max.  Max.    
ASTMA 439D-2 58308139-3.001.50-.70-0.0818.00-1.75-Not intensionally added
       202 3.001.25 22.002.75  
  D-2B 58307148-3.001.50-.70-0.0818.00-2.75-Additions of .7-1.00%
       211 3.001.25 22.004.00Molybdenum will increase
  D-2C 582820121-2.901.00-1.80-0.0821.00-0.50the mechanical properties
       171 3.002.40 24.00Maxabove 800 degrees.
  D-3 55306139-2.601.00-1.000.0828.00-2.50-  
       202 2.80Max. 32.003.00Due to the vast differences in 
  D-3A 553010131-2.601.00-1.000.0828.00-1.00-mechanical properties and 
       193 2.80Max. 32.001.50chemical composition of the
  D-4 60  202-2.605.00-1.000.0828.00-4.50-different types, Oil City may
       273 6.00Max. 32.005.50require minimum order
  D-5 553020131-2.401.00-1.000.0834.00-0.10quantities due to induction
       185 2.80Max. 36.00Max. melting requirements.
  D-5B 55306131-2.401.00-1.000.0834.00-2.00-  
       193 2.80Max. 36.003.00  
  D-5S 653010131-2.304.90-1.000.0834.00-1.75-  
       193 5.50Max. 37.002.25  
                
Ref: ASTM Annual Book of Standards Ferrous Castings: FerroalloysMost common type poured at Oil City modified with .70 Mo.
Section 1 Volume 01.02 for additional data.