SKD61 is a chromium-molybdenum-vanadium hot-work tool steel used for dies and tooling exposed to elevated temperatures, repeated thermal cycling, and mechanical stress. It is commonly compared with AISI H13, although buyers should confirm the applicable standard and chemical requirements rather than assume every grade designation or product is identical. Its combination of hot strength, hardenability, and resistance to thermal fatigue makes it a practical option for many die-casting, forging, and hot-forming applications. This guide explains its typical properties, common uses, heat-treatment considerations, and the checks buyers can make before purchasing.
Click here to get more.
This guide is intended for toolmakers, purchasing teams, engineers, and manufacturers evaluating steel for hot-work tooling. It is especially relevant when a project requires a balance of resistance to heat checking, toughness, wear resistance, and machinability after annealing. The right material and processing route depend on the tool design, operating conditions, and supplier documentation. Use the information below as a starting point, then confirm specifications with your steel supplier and heat-treatment provider.
SKD61 is a Japanese Industrial Standard designation for a hot-work tool steel. It is an alloy steel, not stainless steel, and its chromium content should not be interpreted as providing stainless-steel corrosion resistance. The alloying elements are selected to support performance at elevated temperatures and to allow the steel to be hardened for demanding tooling applications.
SKD61 is generally associated with a composition that includes approximately 0.35–0.42% carbon, 4.80–5.50% chromium, 1.00–1.50% molybdenum, and 0.80–1.20% vanadium by weight. These are typical reference ranges, not a substitute for the governing standard or a product’s mill test certificate. Exact limits and reported values can vary with the specification and material source. We recommend confirming the grade, standard, and heat-specific chemistry before approving material for production.
| Characteristic | Why It Matters | Buyer Check |
|---|---|---|
| Hot strength | Helps tooling retain useful strength during elevated-temperature service. | Match the grade and heat treatment to actual operating conditions. |
| Toughness | Supports resistance to cracking under impact and thermal stress. | Review tool geometry, section size, and required hardness. |
| Hardenability | Allows hardening through a range of section sizes when processed appropriately. | Confirm the supplier’s processing route and your heat treater’s capability. |
| Thermal fatigue resistance | Can help limit heat checking from repeated heating and cooling cycles. | Consider cooling design, surface condition, and service cycle. |
SKD61 is selected for applications where tools face heat, pressure, and cyclic loading. Its suitability does not depend on alloy name alone: tool geometry, surface finish, cooling, lubrication, and heat treatment all affect service performance. A material selection should therefore be based on the complete application rather than a single property or hardness figure.
These examples describe common uses, not a guarantee that SKD61 is suitable for every tool in those categories. For example, high-impact loading may make toughness a priority, while abrasive wear may place greater emphasis on surface treatment and hardness. Discuss the operating temperature, contact material, cooling arrangement, and expected failure mode with your tooling and materials teams.
Heat treatment is essential to developing the intended balance of hardness and toughness, but the correct cycle depends on the steel’s initial condition, part dimensions, furnace control, and application. The temperature ranges below are general industry reference points, not a production recipe. Follow the steelmaker’s data for the supplied product and the qualified procedure of the heat treater. Improper heating or cooling can cause distortion, cracking, or unsuitable properties.
You will get efficient and thoughtful service from Mingchuan.
Hardness is a design and process outcome, not an automatic property of the grade name. Many applications use SKD61 in a hardened condition around 44–52 HRC, but the suitable target depends on section size, impact exposure, and the balance required between wear resistance and toughness. Ask for the heat-treatment condition and inspection documentation relevant to your order, and agree on acceptance criteria before production.
Record the operating temperature, load type, thermal cycling, contact material, cooling method, and expected tool life. Identify whether the dominant concern is heat checking, impact cracking, wear, or dimensional stability. This information helps determine whether SKD61 is appropriate and what condition or additional processing may be needed.
State the governing standard, dimensions, tolerances, and product form, such as round bar, flat bar, or block. Specify whether you need annealed stock for machining or material supplied in another agreed condition. Where interchangeability matters, request confirmation of chemistry and mechanical or hardness requirements rather than relying only on a trade-name comparison.
Compare not only the quoted steel price but also machining allowance, heat-treatment needs, inspection, packaging, and delivery terms. A lower-priced material may not be the better purchase if it does not meet the required specification or arrives in a condition that increases processing risk. For repeat orders, align the specification and documentation requirements across purchasing, production, and quality teams.
SKD61 pricing is influenced by product dimensions, quantity, product form, processing condition, and the documentation or inspection scope requested. Minimum order quantities and lead times can also vary by stock availability, custom size, and production schedule. We do not recommend relying on a generic price or delivery estimate without confirming the actual requirements. For an accurate quotation, provide the grade standard, size, quantity, condition, destination, and any required inspection documents.
At Mingchuan, we support B2B buyers evaluating SKD61 tool steel by discussing grade requirements, product dimensions, quantity, and documentation needs. Share your application and procurement details so we can assess the requested supply scope and prepare a quotation based on the information provided. Final material acceptance and heat-treatment procedures should be confirmed against your project specification.
SKD61 is a widely used hot-work tool steel option for tooling exposed to elevated temperatures, repeated thermal cycling, and mechanical stress. Its performance depends on selecting the correct specification and product condition, then applying a heat-treatment route suited to the component and service environment. Before purchasing, define the failure risks, confirm the standard and chemistry, and agree on hardness, traceability, and delivery requirements. Send Mingchuan your required size, quantity, condition, and application details to begin a focused B2B material inquiry.
For more Skd61 Tool Steelinformation, please contact us. We will provide professional answers.