What Is the DIN Equivalent of H13?
Engineers and international buyers often need to identify equivalent tool steel grades across different standards. When comparing American and European specifications, the DIN equivalent most commonly associated with AISI H13 is DIN 1.2344.
For a broader overview of cross-standard designations, see the H13 Equivalent & Comparison Guide.
The Short Answer
The closest DIN equivalent to AISI H13 is DIN 1.2344. Under the EN/DIN alphanumeric classification system, this grade is also designated X40CrMoV5-1.
This alphanumeric name reflects the alloy’s approximate composition:
- X40 – approximately 0.40% carbon
- CrMoV – alloyed with chromium, molybdenum, and vanadium
- 5-1 – roughly 5% chromium and about 1% vanadium
In international material references, H13 is also commonly associated with several other designations:
- JIS: SKD61
- BS: BH13
- UNS: T20813
These grades belong to the same family of 5% chromium hot-work tool steels widely used for high-temperature tooling.
Understanding Equivalent Steel Grades
In international material sourcing, the term equivalent grade refers to steels that are highly comparable in chemistry and intended performance. It does not imply that two grades are perfectly identical.
Different standards organizations define specifications independently. Even when two grades share nearly identical chemical compositions, their governing standards may still differ in areas such as:
- grain size requirements
- hardenability ranges
- heat-treatment recommendations
- inspection and testing criteria
For this reason, cross-standard comparisons such as H13 and DIN 1.2344 are typically treated as closest matches rather than exact one-to-one substitutes.
Practical Considerations When Substituting Grades
Because steel standards are not perfectly identical, grade substitution should always be verified before final specification. When evaluating H13 and DIN 1.2344 in international sourcing, several practical checks are recommended.
- Review the governing standards. Always consult the complete and current specifications of the relevant standards before approving a substitution.
- Evaluate the application requirements. Operating temperature, tooling design, and heat-treatment conditions can influence whether two grades perform identically in service.
- Assess overall tooling economics. Material selection should be based on overall tooling performance—including expected tool life, production stability, and cost per part—rather than on the grade designation alone.
Related Pages
FAQ
The closest DIN equivalent to AISI H13 is DIN 1.2344. Under the EN/DIN alphanumeric system, this grade is also designated as X40CrMoV5-1.
This name reflects the alloy’s composition: X40 indicates approximately 0.40% carbon, CrMoV denotes chromium, molybdenum, and vanadium, and 5-1 represents roughly 5% chromium and 1% vanadium.
No, they are considered “closest matches” rather than exact substitutes. While highly comparable in chemistry, standards may differ in grain size, hardenability ranges, heat-treatment, and testing criteria.
Beyond the DIN 1.2344 equivalent, H13 is also known as JIS SKD61, BS BH13, and UNS T20813. These all belong to the 5% chromium hot-work tool steel family.
Engineers and international buyers identify equivalent grades to source comparable materials across global standards with similar chemistry and intended performance.
You should consult current governing standards, evaluate specific application requirements like operating temperature, and assess overall tooling economics, including expected tool life and production stability.
H13 and its equivalents, such as DIN 1.2344, are 5% chromium hot-work tool steels widely used for high-temperature tooling.