fraisa.com 332 Co5 HSS-E Legend to the product page of thread cutting tools Cutting tool substrate material High-performance cutting tool substrate material, powder metallurgically produced HSS alloys. Application classes / Tolerance positions Tools of application class 2 (ISO 2) are designed for the production of threads with the tolerance fields 4G, 5G, 6H. High-performance substrate material, conventionally melted HSS alloy. Co-content 5%. Universal fine-grain carbide. Hardness 1600 HV. Co-content 10%. Universal fine-grain carbide. Tools of application class 1 (ISO 1) are designed for the production of threads with the tolerance fields 4H, 5H. Tools of application 6H are designed for the production of threads for inserts. Tools of application class 3 (ISO 3) are designed for the production of threads with the tolerance fields 6G, 7H, 8H. Tools of application class 7G are preventively designed for the production of threads with the tolerance fields 7G, 8G, where subsequent heat treatment may cause dimensional distortions. Tools of application class 2 (ISO 2) are designed for the production of threads with the tolerance fields 4G, 5G, 6H. For threads which will get a galvanic coating of 0.025 mm thickness the tools are designed with an increased thread tolerance of 0.1 mm. Tools of application class 4H are designed for the production of threads MJ with the tolerance field 4H (ASME B1.1). Tools of application 2B are designed for the production of threads with the tolerance field 2B.
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