ISO 9443:1991
Heat-treatable and alloy steels; surface quality classes for hot-rolled round bars and wire rods; technical delivery conditions
- Standard No.
- ISO 9443:1991
- Release Date
- 1991
- Published By
- International Organization for Standardization (ISO)
- Status
- Replace By
- ISO 9443:2018
- Latest
- ISO 9443:2018
- Scope
- Applies particularly to steels for engineering applications, but may, by agreement, also be applied to structural steels or tool steels. Does not include any requirements for the permissible depth of surface decarburization. Annex A is for information only.
ISO 9443:1991 history
- 2018 ISO 9443:2018 Surface quality classes for hot-rolled bars and wire rod
- 1991 ISO 9443:1991 Heat-treatable and alloy steels; surface quality classes for hot-rolled round bars and wire rods; technical delivery conditions
