T10A carbon tool steel the T8A carbon steel T12A carbon steel carbon steel prices 

 T10A 
 Materials: Carbon tool steel grades: standard of T10A: GB / T 1301-1994 ● Features and Scope: This steel strength and wear resistance compared with T8 and T9, but the heat is hard low, not high hardenability and quench large deformation. Suitable for the manufacture of cutting conditions, wear resistance requirement is higher, and not subject to sudden and severe vibration, requires a certain toughness and has a sharp blade of a variety of tools, such as turning, planer knives, drill bits, paper cutter, the low-precision shape simple measuring tools (such as card board, etc.), can be used as from the larger impact of wear zero ● chemical composition: Carbon C: 0.95 ~ 1.04 Silicon Si: ≤ 0.35 Mn Mn: ≤ 0.40 sulfur S: ≤ 0.020 phosphorus P: ≤ 0.030 Chromium Cr: the promise of residual content of ≤ 0.25, ≤ 0.10 (manufacturing lead bath quench wire) Ni - Ni: promise the residual content of ≤ 0.20, ≤ 0.12 (manufacturing lead bath quench wire) Copper Cu: the promise of residual content of ≤ 0.30, ≤ 0.20 (manufacturing lead bath quench wire) Note: The promise residual content of Cr Ni of Cu ≤ 0.40 (the manufacture of lead bath quench wire) ● Mechanical Properties: Hardness: Annealed ≤ 197HB indentation diameter ≥ 4.30mm; quenching, ≥ 62HRC ● heat treatment and microstructure: heat treatment specifications: sample quenched to 760 ~ 780 ° C, water-cooled. ● Delivery status: delivery of steel in annealed condition. By mutual agreement, delivery can also be annealed condition.