In general, and not including specific standards intended for catalogue products, the standards applied to forged parts are:

UNE-EN 10254:2000 Steel closed die forgings - General technical delivery conditions.

UNE-EN 10243:2000 Steel die forgings - Tolerances on dimensions

Part 1: Drop and vertical press forgings.

Part 2: Upset forgings made on horizontal forging machines

UNE-EN 10250:2000 Open steel die forgings for general engineering purposes.

Part 1: General requirements

Part 2: Non-alloy quality and special steels

Part 3: Alloy special steels

Part 4: Stainless steels

UNE-EN 10228:2000 Non-destructive testing of steel forgings

Part 1: Magnetic particle inspection

Part 2: Non-alloy quality and special steels

Part 3: Ultrasonic testing of ferritic or martensitic steel forgings

Part 4: Ultrasonic testing of austenitic and austenitic-ferritic stainless steel forgings