O1 Tool Steel | DIN 1.2510 | Supplier & Exporter – Nifty Alloys
We supply and export O1 Tool Steel in plates, sheets, bars, blocks, and flats to industries across the world. A cold-work oil-hardening tool steel, O1 has good wear resistance, toughness, and machinability, as well as high dimensional stability following heat treatment.
If you're searching for a reliable steel grade for gauges, punches, knives, or dies, O1 Tool Steel is your affordable option. With ISO-certified quality, fast delivery, and custom sizes, Nifty Alloys is the partner of choice for O1 Tool Steel.
What is O1 Tool Steel?
O1 Tool Steel is a cold-work, oil-hardening tool steel that delivers a balance of toughness, wear resistance, and machinability. Unlike air-hardening grades such as A2, O1 hardens in oil, which minimizes distortion and provides excellent dimensional stability.
Because of its affordable cost and ease of machining, O1 is one of the most widely used tool steels for general-purpose tooling.
- Also known as: DIN 1.2510, JIS SKS3, EN 90MnCrV8
- Category: Cold Work Tool Steel
- Hardness: 57–62 HRC after heat treatment
Key Features & Properties of O1 Tool Steel
- Hardness – Can achieve up to 62 HRC after heat treatment.
- Excellent Wear Resistance – Ensures long tool life under high-friction applications.
- Good Machinability – Easy to machine in the annealed condition.
- Dimensional Stability – Retains shape and size after heat treatment.
- Balanced Toughness & Strength – Suitable for demanding applications like cutting tools and dies.
These properties make O1 Tool Steel a go-to choice for precision toolmakers.
Comparison: O1 Tool Steel vs D2 Tool Steel
- O1 Tool Steel → Easier to machine, oil-hardening, economical, moderate wear resistance.
- D2 Tool Steel → Air-hardening, superior wear resistance, higher chromium content, better for heavy-duty tools.
Depending on your application, our experts at Nifty Alloys can recommend the best tool steel grade for your requirement.
Applications of O1 Tool Steel
Chemical Composition (Typical)
Ground Flat Stock
Forging
Equivalent Grades of O1 Tool Steel
Available Forms & Size Range
Heat Treatment & Hardening Process
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At Nifty Alloys, we don’t just supply O1 Tool Steel (DIN 1.2510 / JIS SKS3 / EN 90MnCrV8)—we deliver reliable solutions for tool and die industries worldwide. With a wide range of cold-work, hot-work, and high-speed steels, we ensure you get the right material for your application, backed by ISO-certified quality and global delivery.
With ready stock, fast shipping, and competitive pricing, Nifty Alloys is your trusted source for O1 Tool Steel and other engineering alloys.
