ASTM A48 covers gray iron castings intended for general use. A48 castings are supplied based solely on tensile strength, no chemical requirements or ductility is specified.
| A48 Mechanical Properties | |||||
|---|---|---|---|---|---|
| Class Number | Tensile Strength, ksi min | ||||
| 20 | 20 | ||||
| 25 | 25 | ||||
| 30 | 30 | ||||
| 35 | 35 | ||||
| 40 | 40 | ||||
| 45 | 45 | ||||
| 50 | 50 | ||||
| 55 | 55 | ||||
| 60 | 60 | ||||
| A48 Class Type | |||||
|---|---|---|---|---|---|
| Class Type | Nominal Test Bar Diameter, inches | ||||
| A | 0.88 | ||||
| B | 1.2 | ||||
| C | 2.0 | ||||
| S | Agreed on between manufacturer and purchaser | ||||
| Example, casting would be called out as A48-30A | |||||
Casting Examples
Popular examples of castings often made to ASTM A48 include Hillside Washers and Ogee Washers.