1.3243 M35 SKH55 HS6-5-2-5 High Speed Tool Steel Plate Sheet

HSS Circular Saw, Blade, Press Mould, Drills, End mill, Planer Knife, Chipper Knife, Slice Knife, Hss Square Tool Bits.

1.3243/M35 is a conventionally manufactured cobalt alloyed high speed tool steel. The various stages of the manufacturing process are chosen and controlled so that an end product is obtained with a good structure in terms of carbide size and distribution.

Similar Grades: 1.3243, M35

Shape: Sheet, Plate

Steel-making Process: EF/EAF+LF+VD, EF/EAF+ESR 

Delivery condition: Cold Rolled+Annealed,  Hot Rolled+Annealed.

Surface condition: Black, Smooth, Bright

Standard: BS EN ISO 4957, ASTM A600

Size Range:

Thickness:1-16mm

Width:810mm max

Length:4000mm max 

Tolerance of Size:

Thickness 1.5-2.5mm with Tolerance (-0,+0.15) --Cold rolled plate

Thickness 2.55-16.0mm with Tolerance (-0,+0.25) --Hot rolled plate

Heat treatment temperatures, including rate of heating, cooling and soaking times will vary due to factors such as the shape and size of each 1.3243/M35 steel component. Other considerations during the heat treatment process include the type of furnace, quenching medium and work piece transfer facilities. Please consult your heat treatment provider for full guidance on heat treatment of high speed tool steel.

Forging: Pre heat the 1.3243/M35 high speed steel slowly and uniformly to 450-500°C and equalise. Then increase more quickly to the forging temperature of 950-1100°C and equalise prior to forging. Do not allow the forging temperature to drop below 950°C, if this occurs re heating will be necessary. Always cool the steel very slowly after forging.

Annealing: 1.3243/M35 is supplied in the annealed and machineable condition. Re annealing will only be necessary if the steel has been hot worked, forged, or hardened by the toolmaker. Heat the M35 hss bar high speed steel to 850°C at a rate of no more than 220°C per hour. Always hold at temperature for one hour per 25mm of thickness (with two hours being minimum). Furnace cool slowly. 1.3243/M35 annealed hardness achieved should be 260 Brinell or lower.

Stress Relieving: If tools produced from M35 hss bar high speed steel are heavily machined or ground it is recommended to stress relieve after machining and prior to hardening to minimise the possibility of distortion. To stress relieve heat the component to 600-700°C and soak well (approx 2 hours) Cool slowly in the furnace. The tools can be finish machined before heat treatment.

Hardening: For best results harden in a vacuum or controlled furnace, or in a properly rectified salt bath. Pre heat thoroughly in two steps to 450-500°C, then to 820-870°C, transfer to the high temperature salt bath or furnace. The exact hardening temperature to use for 1.3243/M35 will depend on the type of work being treated, but in general components should be hardened from the range of 1050-1250°C.

Tempering: 1.3243/M35 high speed steel components can be tempered between 510-620°C. Triple tempering is recommended with a minimum of two hours at temperature per cycle. The component should be cooled in still air to room temperature between tempering treatments.