T5 High Speed Steel AISI T5 Tool Steel is a Tungsten-cobalt high speed steel as per ASTM / AISI standard. The AISI T5 steel contains 8% Co,which makes the high temperature performance and toughness better than AISI T4.
T4 High Speed Steel AISI T4 Tool Steel is a Tungsten-cobalt high speed steel as per ASTM / AISI standard. AISI T4 steel is similar to AISI T1 high speed steel but with added 5% cobalt which can increase the heat resistance.
T1 High Speed Steel AISI T1 Tool Steel is an important Tungsten-type high speed steel according to ASTM/A600 standard. This material has high hardness and red hardness which can remain 57 HRC when the temperature is 500°C.
M35 High Speed Steel AISI M35 Tool Steel is a Cobalt-Type high speed tool steel. M35 steel is on the basis of M2 Steel, but with 5% Cobalt content increased which makes better hot hardness and wear resistance.
AISI 8620 Steel AISI 8620 Steel is a low nickel,chromium-molybdenum alloy steel as per AISI/ASTM standard. SAE 8620 gives a hard case with a strong core whilst retaining a remarkable degree of toughness.