Brinell Parameters

Pier Foundry offers all ASTM grades of Gray, Ductile & Austempered Ductile Iron.

Iron Type Classification &
Specification
Tensile
Strength (psi)
Brinell Hardness
Range (BHN)
Gray Iron, ASTM A-48 Class 25 25,000 170-229
Class 30 30,000 187-241
Class 35 35,000 207-255
Class 40 40,000 217-269
 
Ductile Iron, ASTM A-536 [1] 60-40-18 60,000 170 Max
65-45-12 65,000 149-207
80-55-06 80,000 187-255
[2] 100-70-03 100,000 241-302
 
Austempered Ductile Iron, A-897
Grade 1
Grade 2
Grade 3
Grade 4
Grade 5
125-80-10 125,000 269-321
150-100-07 150,000 302-363
175-125-07 175,000 341-444
200-155-01 200,000 388-477
230-185-00 230,000 444-555
 
Note 1: Must be heat treated to achieve elongation
Note 2: Depending on metal section, heat treating may be required to achieve these specifications.
Contact Pier Foundry for details on special grades or special alloys.

 

51 State Street  St. Paul, MN 55107
phone: 651-222-4461  fax: 651-222-4185
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