Astm A564-A564m-19 | PDF
The speci- 'mens shall be heat treated in accordance with 5.1. Unless otherwise specified in the purchase order, the condition of hhardening heat treatment shall be at the option of the producer and testing shall be done at 70 to 80 °F [20 to 25 °C]. The tests shall meet the requirements of Table 4. When tested at temperatures other than 70