Each of these are divided into sub-groups on the basis of their structure and/or composition. For example, P-group steel and cast steel is split into four sub-groups, namely;
• P1 – Free machining steel
• P2 – Plain carbon steel
• P3 – Alloy steel
• P4 – Tool steel
A final division includes material properties, such as hardness and ultimate tensile strength. This is to provide our customers with a complete tool recommendation, including starting values for cutting speed and feed.