| ASTM E399 | Standard Test Method for Linear-Elastic Plane-Strain Fracture Toughness of Metallic Materials | Materials Testing |
| Superseded by: None | Superseded By: None | |
| Selected sector: AS | Date added: | |
| SupplierNumber | SupplierName | State | CountryName |
| 90043790 | ATLAS TESTING LABORATORIES INC | CA | United States |
| 90049888 | DICKSON TESTING CO INC | CA | United States |
| 90043872 | ELEMENT MATERIALS TECHNOLOGY | CA | United States |
| 90051187 | Kaiser Aluminum Washington | WA | United States |
| 90044400 | WESTMORELAND MECH TEST AND RSRCH IN | PA | United States |