T4 / 1.3255

AISI T4 Tool Steel

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.
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1.3255 / S18-1-2-5 Steel

1.3255 / S18-1-2-5 DIN 1.3255 / S18-1-2-5 Steel is a Tungsten-Cobalt high speed tool steel according to DIN Germany standard. S18-1-2-5 steel is similar to 1.3355 steel but with added 5% cobalt.
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