What Is 8407 Tool Steel? Properties, Applications, and H13-Type Equivalency

8407 tool steel is a hot-work die steel grade commonly marketed as an H13-type material. It is selected for tooling exposed to elevated temperatures, repeated heating and cooling, and mechanical impact, including die-casting dies, extrusion tooling, and forging dies. In many purchasing contexts, 8407 is compared with AISI H13, EN 1.2344, or JIS SKD61, but buyers should confirm the exact standard, chemistry, and supply condition rather than assume every designation is identical.

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In practical terms, 8407 is intended to balance hot strength, resistance to thermal fatigue, toughness, and machinability after annealing. The right choice depends on the tool’s operating conditions and the supplier’s product specification. Below, we explain its typical properties, applications, H13-type relationship, and the checks that help buyers specify it accurately.

Key Takeaways

• 8407 is generally used as a hot-work tool steel designation and is commonly positioned as an H13-type grade.
• Applications include die casting, hot extrusion, and forging, where heat checking, wear, and thermal cycling matter.
• “H13 equivalent” should be confirmed against the applicable material standard and mill certificate; trade names and specifications may differ.
• State the required dimensions, delivery condition, inspection documents, and intended application when requesting a quotation.

What Is 8407 Tool Steel?

8407 is a chromium-molybdenum-vanadium hot-work tool steel designation used in the tooling market. Its alloy design is intended to retain useful strength at elevated temperatures while providing a balance of toughness and resistance to thermal cracking. Since “8407” can refer to a supplier’s grade designation, the precise composition and acceptance requirements should be taken from that supplier’s current technical data sheet and certificate.

Buyers often encounter 8407 alongside AISI H13, EN 1.2344, and JIS SKD61. These grades are widely treated as comparable H13-type materials for initial sourcing discussions, but a cross-reference is not proof that two products meet identical chemical limits, cleanliness requirements, or performance expectations. For a critical tool, compare the governing standard and certified heat analysis before approving a substitution.

Core Functions and Typical Properties

The material’s main function is to serve as a reusable tool steel in hot-work environments. A suitable heat treatment can develop the hardness and strength needed for the tool, while the alloy system supports toughness and resistance to thermal fatigue. Actual performance depends on tool geometry, heat treatment, surface condition, cooling design, and the process temperature—not on the grade name alone.

Representative H13-Type Reference Values

The following figures are indicative reference values for H13-type steels, not guaranteed properties for every 8407 product. Different product specifications, test conditions, and heat treatments can change the reported values, so use the supplied grade datasheet for design and production decisions.

• Density: approximately 7.8 g/cm³ as a representative room-temperature reference.
• Thermal conductivity: commonly around 24–30 W/m·K near room temperature, depending on the source and condition.
• Annealed delivery hardness: often specified in a range near 180–220 HB for comparable hot-work grades; confirm the supplier’s actual acceptance range.

These values help with preliminary material comparison, but they are not substitutes for a purchase specification. For a finished tool, the required hardness after heat treatment should be agreed with the toolmaker and checked against the intended service conditions. If the application involves severe thermal cycling or high impact, toughness and heat-treatment quality deserve particular attention.

Applications of 8407 Tool Steel

8407 is considered when a tool must retain useful mechanical properties during repeated exposure to heat. Its H13-type positioning makes it relevant to a range of hot-work tooling, but the best grade and condition depend on the production process, tool size, and expected failure mode.

Common Application Scenarios

• Die casting: dies, inserts, cores, and related components exposed to repeated contact with molten or hot metal. Thermal fatigue, erosion, and cracking are important selection concerns.
• Hot extrusion: dies and tooling components subject to high pressure and heat as metal passes through the tooling.
• Hot forging: dies and inserts that experience repeated impact, elevated temperatures, and wear.
• Other hot-work tools: selected punches, mandrels, and tooling components where a hot-work steel’s balance of strength and toughness fits the design.

Not every hot application is automatically suitable for 8407. A tool dominated by severe abrasive wear, corrosion, or unusual impact may require a different material or a specific surface treatment. Review the failure history and process conditions before choosing a replacement grade.

8407 and H13-Type Equivalency

For initial comparison, 8407 is commonly treated as an H13-type hot-work steel. In cross-reference discussions, AISI H13, EN 1.2344, and JIS SKD61 are also frequently grouped in this family. This relationship is useful for identifying candidate materials, but it should not be interpreted as a universal guarantee of direct interchangeability.

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What Buyers Should Verify

• Applicable designation: Ask whether the quoted product is supplied to a named standard or to a manufacturer’s proprietary specification.
• Chemical composition: Compare certified heat analysis with the limits required by your drawing or internal material approval.
• Condition and hardness: Confirm whether the steel is annealed, pre-hardened, or supplied in another condition, and define the required range.
• Quality documentation: Specify the inspection documents required, such as a material test certificate, and clarify traceability expectations before ordering.

For non-critical replacements, a documented cross-reference may be enough to begin evaluation. For production tooling with a history of cracking, premature wear, or downtime, qualify the proposed substitute against the original material requirements and, where appropriate, conduct a controlled production trial. Avoid changing the grade, heat treatment, and tooling design at the same time, because that makes the result harder to assess.

Types and Material Options

When sourcing 8407, buyers are usually choosing not only a grade but also a product form and delivery condition. Depending on availability and the supplier’s product range, options may include round bar, flat bar, or block stock, supplied annealed for machining or in another agreed condition. The dimensions, machining allowance, and internal quality requirements should be specified for the actual component.

Some projects may also compare standard H13-type material with premium-melt or specially controlled variants. Such labels should be tied to defined requirements—such as cleanliness, uniformity, or inspection method—rather than treated as performance guarantees by themselves. Ask the supplier to describe the relevant process or acceptance criteria and provide supporting documentation where available.

Key Specifications to Include in an RFQ

A clear request for quotation reduces the risk of receiving a technically unsuitable product. Include the grade and standard, product form, finished or stock dimensions, quantity, delivery condition, and required documents. If the steel will be used for a specific hot-work application, state the process so the supplier can identify any specification questions before confirming the offer.

How to Select a Supplier

Evaluate suppliers on their ability to quote the specified grade and condition clearly, not just on the use of the 8407 name. Check whether the offer identifies product dimensions, tolerances, delivery condition, documentation, and any limitations in the cross-reference. Ask how the supplied material will be identified and traced through the order.

For international or repeat purchasing, also confirm packaging, shipping terms, order quantity, and lead-time expectations in writing. Lead times and minimum order quantities can vary with stock availability, product size, and processing requirements; they should be confirmed for each inquiry rather than assumed. If the application is demanding, discuss the intended use before finalizing a substitution.

Mingchuan Supplier Support

Mingchuan supports B2B buyers sourcing 8407 tool steel by helping clarify grade designation, product form, dimensions, delivery condition, and documentation requirements. We can review an RFQ or drawing details to identify information needed for a technically clear quotation. Product availability and the exact supplied specification should be confirmed for each order.

Conclusion: Is 8407 Tool Steel Right for Your Project?

8407 is a hot-work tool steel commonly positioned as an H13-type option for die casting, extrusion, forging, and related tooling. Its suitability depends on the exact material specification, heat treatment, tooling design, and operating conditions. Treat H13, 1.2344, and SKD61 references as useful starting points—not as automatic proof of equivalence.

To move forward, define the application, grade or standard, dimensions, supply condition, hardness requirement, and certificate needs in your RFQ. Mingchuan can help review these details and provide a quotation based on the requested specification. Contact our team with your material requirements to discuss a suitable 8407 supply option.