Pre-hardened Mold Steel Machines Faster Than P20

NAK 80 from International Mold Steel and Daido Steel is a pre-hardened mold steel (38-42 HRC) designed to be machined 10-15 percent faster than P20 steel.

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NAK 80 from International Mold Steel and Daido Steel is a pre-hardened mold steel (38-42 HRC) designed to be machined 10-15 percent faster than P20 steel. It does not contain sulfur, which enables it to achieve an optical polish that makes it suitable for lens-quality molds. It also is well-suited for EDM work.

According to the companies, the steel offers a uniform hardness and microstructure through to its interior, does not require stress-relieving, and is highly weldable.  It is stocked in plate form ranging to 12.75" thick and in rounds from 0.512" to 9.921" in diameter.

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