T10A 


 T10A carbon tool steel 
 Carbon C: 0.95 ~ 1.04 Si Si: ≤ 0.35 Manganese Mn: ≤ 0.40 S S: ≤ 0.020 P P: ≤ 0.030 Chromium Cr: agreed residual content ≤ 0.25, ≤ 0.10 (when the manufacture of lead-bath hardening steel) Ni: to promise residual content ≤ 0.20, ≤ 0.12 (when the manufacture of lead-bath quenching wire) copper Cu: residual content promised ≤ 0.30, ≤ 0.20 (when the manufacture of lead-bath hardening steel) Note: The agreed content of the residual Cr Ni Cu ≤ 0.40 (when the manufacture of lead wire quenching bath ) 

 ● Mechanical Properties: Hardness: Annealed, ≤ 197HB, indentation diameter ≥ 4.30mm; quenching, ≥ 62HRC 
 ● Heat treatment and microstructure specifications: heat treatment norms: specimen quenched 760 ~ 780 ℃, water-cooled. 
 ● Delivery status: Delivery of steel in the annealed condition. By mutual agreement, can not annealed state delivery. T10A steel features a low hardenability common cold die steel, high carbon tool steel, the advantage of good workability, cheap, easy to source, but the poor hardenability, quenching deformation, because the steel contains alloying elements less, the low tempering resistance, and thus carrying capacity is low. Although the high hardness and wear resistance, but a small section of the workpiece lack of toughness, a large section of blank cross-section tend to have residual carbide network. After globalization, the minimum heating temperature 740 ℃, the best isothermal temperature of 690 ℃ -720 ℃, there flake carbide heating temperature 780 ℃, heat softening temperature of 250 ℃, hardening depth of the water quench 15-18mm, oil quenching 5 -7mm. The state in return for steel roughing, high hardness and then quenching and tempering, and then finishing. To obtain high wear resistance and mirror polishing. For low-carbon martensite temperature quenching, so that those with high strength and toughness wear Galaxy, prevent and reduce the deformation and cracking phenomena T10A typical application examples: 1 for the production of general dies, volume <100 000, the material was washed Soft-state low-carbon steel, material thickness less than 1mm. 2 for the manufacture of cold drawn, drawing die, wear tolerance at work, you can go through high-temperature tempering, and then re-conventional quenching, self-shrinkage re thick. 3 for the manufacture of cutting thickness of 11mm thick steel plate in the long blade, after the implementation of shell hardening, fatigue and his wife high and low chipping tendency for life seven times higher than the 9CrWMn steel. 4 soft silicon steel for punching the holes. 5 can be used to make material thickness of less than 3mm Die punch, die, inserts, making the punch hardness when the hardness used 58-62HRC; do die are used hardness 60-64HRC. 6 can be used to make the general bending of the punch, die, inserts, hardness, use 56-60HRC. 7 Creating a general drawing die of the punch, die, inserts, when asked to do the punch hardness of selected 58-62HRC; do die are used hardness 60-64HRC. 8 for the manufacture of aluminum extrusion die in the cold when the hardness of the die used 62-64HRC. 9 Die for a variety of small and medium volume production, and the need to shell hardening state of the applicable integral cold heading die, punching tools. 10 for cold-punch (punch), light load, the next size, hardness 58-60HRC; hex nuts for the cold upsetting die, hardness 48-52HRC. 11 use of the steel used to make a simple drawing and stamping die mold