ASSAB 8407 is a hot-work tool steel used for tooling exposed to elevated temperatures, repeated heating and cooling, and mechanical loads. It is commonly associated with the AISI H13 steel family and with designations such as 1.2344 and JIS SKD61, but these grades should not be treated as automatically interchangeable. For a purchase decision, compare the applicable product specifications, material condition, heat treatment, dimensions, and inspection requirements—not just the grade name.
This guide explains the steel’s general characteristics, typical applications, equivalent-grade considerations, and the practical checks buyers should make before ordering. At Mingchuan, we help B2B buyers evaluate material requirements and confirm supply options for tool steel orders. Exact availability and product details should be verified against the requested specification.
ASSAB 8407 is a commercial designation for a hot-work tool steel associated with chromium-molybdenum-vanadium alloy systems. Its intended role is to make tools and dies that operate under thermal and mechanical stress. The exact properties of a supplied product depend on its specification, production route, size, and condition at delivery.
Hot-work tool steels are used where a tool contacts hot metal or experiences repeated thermal cycles. They are generally chosen to balance hot strength, resistance to thermal fatigue, wear resistance, and toughness. No single steel grade eliminates cracking or wear; tool life also depends on design, heat treatment, surface condition, cooling, and operating practice.
As a broad reference, H13-type specifications commonly give composition ranges of approximately 0.32–0.45% carbon, 4.75–5.50% chromium, and 1.10–1.75% molybdenum by weight. These are family-level reference ranges, not a certificate for a particular ASSAB 8407 heat. Buyers should use the supplier’s applicable datasheet and material test certificate to verify the chemistry of the actual product.
ASSAB 8407 is generally considered when a tool needs a combination of hot-work performance and resistance to mechanical damage. Chromium, molybdenum, and vanadium contribute to the steel’s hardenability and high-temperature performance, while the final result depends strongly on heat treatment. The grade should therefore be assessed as part of a complete tooling and process specification.
| Evaluation item | What buyers should confirm |
|---|---|
| Grade and standard | Whether the order specifies ASSAB 8407, an applicable standard, or an approved equivalent. |
| Product condition | Annealed, hardened, or another agreed condition, plus the required hardness range. |
| Product form | Round bar, flat bar, block, or another form, including finished dimensions and machining allowance. |
| Quality documentation | Required certificates, heat identification, inspection scope, and traceability expectations. |
| Heat-treatment plan | Target hardness, section size, and the heat treater’s process recommendations. |
Hardness depends on the heat-treatment condition and test location. As a general engineering reference, H13-family tooling is often used in a working hardness range around 44–52 HRC, but this is not a universal requirement for ASSAB 8407. The appropriate target depends on tool geometry, impact exposure, wear demands, and the product supplier’s processing guidance.
Hot-work tool steel is commonly used for die-casting dies, cores, and inserts because these components encounter hot metal and repeated thermal cycling. ASSAB 8407 may be considered where the tool design requires a balance of hot strength, toughness, and resistance to heat checking. The final grade and hardness should be matched to the casting alloy, cycle conditions, component size, and maintenance strategy.
Forging dies, punches, and extrusion tooling can experience a combination of heat, pressure, and wear. An H13-family steel may be suitable when the application calls for hot-work performance rather than the characteristics of a cold-work or general-purpose steel. Buyers should also consider whether tool failure is driven primarily by thermal fatigue, impact, abrasion, or insufficient toughness, since each failure mode can change the preferred hardness and treatment.
Depending on the design and operating environment, this steel family may also be considered for hot shearing tools and related tooling components. It is not automatically the best option for every high-temperature application. Where corrosion resistance, exceptional wear resistance, or a different balance of toughness and hardness is the priority, compare other material families with a toolmaker or metallurgical specialist.
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ASSAB 8407 is frequently compared with AISI H13, EN/DIN 1.2344, and JIS SKD61. These designations are useful starting points when researching alternatives or planning international procurement. However, a grade cross-reference does not prove that products from different producers share identical chemistry limits, melting practice, cleanliness, heat-treatment response, or inspection requirements.
| Designation | How it is commonly used in comparisons | Buyer check |
|---|---|---|
| ASSAB 8407 | Commercial hot-work tool steel designation | Confirm the exact product variant and supplier specification. |
| AISI H13 | Common US-family reference for hot-work tool steel | Check the governing standard and specified chemistry or quality level. |
| 1.2344 | Common European designation used in cross-reference searches | Confirm the applicable standard, condition, and documentation. |
| SKD61 | Common Japanese designation used for comparison | Verify the required specification and acceptance criteria with the supplier. |
If an exact branded grade is unavailable, do not approve a substitute based on a name match alone. Request a written comparison covering chemistry, product condition, delivery hardness, inspection documents, and any special processing requirement. Where the tool is critical, have the tool designer or responsible engineering team approve the alternative before production.
Describe the tool’s function, operating temperature range, contact material, production cycle, and cooling approach. Identify whether the main concern is heat checking, cracking, wear, deformation, or another failure mode. A clear problem statement gives the supplier and heat treater a better basis for discussing grade and condition.
State whether you need bar, plate, or a machined blank, and provide finished dimensions together with machining allowance. Specify the delivery condition and any hardness requirement rather than assuming the material will arrive ready for service. Larger sections may require particular attention to heat-treatment uniformity and the agreed inspection approach.
Before ordering, define the required material certificate, traceability, testing, and inspection criteria. If a substitute grade is acceptable, document the approval conditions in the purchase specification. Clear requirements reduce the chance of receiving material that is technically related but unsuitable for the intended process.
Pricing for ASSAB 8407 or a comparable H13-family steel can vary with product form, dimensions, quantity, delivery condition, origin, processing, and documentation requirements. Minimum order quantities and lead times also depend on whether the requested size is available from current stock or needs to be sourced or processed. A supplier should confirm these details against the actual specification rather than quote from the grade name alone.
For a useful quotation, provide the grade or approved equivalent, product form, dimensions, quantity, required condition, delivery destination, and documentation needs. If the material is for a replacement tool, include the current drawing or relevant dimensional notes where possible. This helps suppliers assess feasibility and identify questions before confirming commercial terms.
At Mingchuan, we support B2B inquiries by reviewing the requested grade, size, condition, and documentation requirements before confirming a supply proposal. Our team can help buyers clarify whether they need ASSAB 8407 specifically or are open to a technically reviewed equivalent. Please share your specification, quantity, and destination so we can check the available sourcing and processing options.
ASSAB 8407 is a hot-work tool steel commonly associated with the H13 family and compared with 1.2344 and SKD61. It can be a suitable candidate for die-casting, forging, extrusion, and other tooling applications where hot-work performance and toughness are relevant. The equivalent-grade labels are useful for initial screening, but they do not replace a specification-level comparison.
To move forward, define the application and failure mode, confirm the required product form and condition, and agree on documentation and acceptance criteria. Then request a quotation that states the exact offered grade, dimensions, quantity, delivery terms, and lead time. This process gives your engineering and purchasing teams a clearer basis for approving ASSAB 8407 or a suitable alternative.
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