M261 EXTRA Alloy Steel is a high-performance tool steel alloy specifically designed to offer superior performance in applications requiring high wear resistance and hardness. The EXTRA version of M261 is enhanced with improved properties to meet the demanding needs across various industries.

Key Characteristics of M261 EXTRA Alloy Steel:

- Chemical Composition:
- Carbon (C): 0.80-1.10%
- Chromium (Cr): 3.50-4.50%
- Molybdenum (Mo): 0.70-1.00%
- Vanadium (V): 0.15-0.30%
- Manganese (Mn): 0.30-0.50%
- Silicon (Si): 0.20-0.50%
- Phosphorus (P): Max 0.030%
- Sulfur (S): Max 0.030%

- Physical Properties:
- Hardness: M261 EXTRA can achieve high hardness, typically up to HRC 58-62 after heat treatment.
- Wear Resistance: Excellent due to high chromium and vanadium content, enhancing wear resistance.
- Impact Resistance: Good, especially when properly heat treated.

- Applications:
- Mold Making Industry: Used in the manufacture of molds for applications requiring high precision and wear resistance.
- Tool Manufacturing: Suitable for cutting tools and high-performance tools requiring high durability and heat resistance.
- Machine Tool Industry: Used in machine parts requiring high load-bearing capacity and wear resistance.

- Form and Size:
- M261 EXTRA is typically available in the form of plates, bars, or other custom-fabricated products based on application requirements.

Manufacturing and Processing:
- Production Process: M261 EXTRA is produced through standard metallurgical processes, including steelmaking, quenching, and cooling. This process ensures optimal mechanical and chemical properties.
- Machining: Can be machined using methods such as cutting, welding, and heat treatment to meet specific technical requirements.
(Source: Internet)