T10A Hardware Tool Steel Bar


T10A is an alloy tool steel with higher strength and wear resistance than T8 and T9 steel, but T10A steel has low thermal hardness, low hardenability and large quenching deformation. It is suitable for manufacturing various tools with poor cutting conditions, high wear resistance requirements, and not subject to sudden and violent vibration, requiring certain toughness and sharp edges, such as turning tools, planers, drills, paper cutters, and low-precision shapes. 

Simple measuring tools which is produced by T10A steel (such as pallets, etc.) can be used as wear-resistant parts that are not subject to greater impact. The lowest heating temperature for globalization is 740℃, the best isothermal temperature is 690℃—720℃, the heating temperature for flake carbides is 780℃, the heating softening temperature is 250℃, the hardening depth is 15-18mm for water quenching, and 5 for oil quenching. —7mm. T10A steel is rough processed in the annealed state, then quenched and tempered at low temperature to high hardness, and then refined to obtain high wear resistance and mirror polishability. Carry out low-carbon martensite low-temperature quenching, so that it has higher wear resistance and toughness, preventing and reducing deformation and cracking.


Chemical Composition:


CSi (≤)Mn (≤)P (≤)S (≤)V (≤)Cr (≤)Ni (≤)Cu (≤)Mo (≤)W (≤)



Mechanical properties:

Hardness: annealing, ≤197HB, indentation diameter ≥4.30mm; quenching, ≥62HRC


Heat treatment specification: 

sample quenching 760~780℃, water cooling.


Equivalent Grade: 



C105U (1.1545)W5C105W1​SK3C105E2UBW1BC100KUT10A1880N10E19191K990U10AC105U





  1. Used to make general punching dies. When the batch is less than 100,000 pieces, the material to be punched is soft low-carbon steel plate with a thickness of less than 1mm.
  2. It is used to make cold drawn and stretched concave molds. After the wear is out of tolerance during work, it can be tempered at high temperature first, and then re-quenched normally, and it can shrink and re-thick by itself.
  3. It is used to manufacture long shear blades for medium-thick steel plates with a shear thickness of 11mm. After thin-shell quenching, the fatigue resistance is high, the chipping tendency is low, and the service life is 7 times longer than that of 9CrWMn steel.
  4. Used to punch small holes on soft silicon steel sheets.
  5. It can be used to make punches, dies, and inserts for punching dies with a thickness of less than 3mm. When making punches, the hardness should be 58-62HRC; when making concave dies, the hardness should be 60-64HRC.
  6. It can be used to make punches, dies, and inserts for general bending dies. The hardness is 56-60HRC
  7. For the production of punches, dies, and inserts for general drawing dies, the hardness of the punch should be 58-62HRC; for the die, the hardness should be 60-64HRC.
  8. The hardness of 62-64HRC is used to manufacture the concave die in the cold extrusion die of aluminum parts.
  9. It is used for various cold punching dies for small and medium batch production, as well as integral cold heading dies, punching and shearing tools that need to be applied in the hardened state of the thin shell.
  10. Used for cold working punch (punch), light load, lower size, hardness 58-60HRC; used for cold heading die of hexagon nut, hardness 48-52HRC.
  11. The steel can be used to make wire drawing dies and simple punching dies.
  12. Suitable for all kinds of small and medium production batch molds and shock-resistant molds.
  13. Using 9CrWMn steel to make long shear blades with a shear thickness of 11mm for medium-thick steel plates. Although the blade hardening is easy to operate, it is prone to chipping during use, and the service life of the blade is shorter. After switching to T10A steel to make the cutting blade, due to the use of thin shell quenching, the resistance to fatigue is improved, the tendency to chipping is reduced, and the service life of the cutting blade is prolonged by 7 times.
  14. The T10A steel punch with hardness of 56~58HRC punches small holes in the soft silicon steel sheet. After only a few thousand pieces, it fails due to excessive burrs. If the hardness of the punching die is increased to 60~62HRC, the service life can be increased to 20,000 to 30,000 times. If you continue to increase the hardness of the mold, it is prone to early fracture, which will reduce the service life of the mold.
  15. The cold heading die made of this steel has a deep and steep cavity. Early collapse and failure often occur during use, and the service life of the punch is less than 4000 times. After analysis, the reason is that the feed rate is too large during cavity grinding, and the burn is softened. After improving the grinding process, the service life of the light punching was significantly increased, stabilizing at more than 30,000 times.
  16. When using this steel to make cold-punching dies, when punching thin steel plates with bright surfaces, the tool can be punched about 30,000 times per sharpening; when the black iron sheet (hot-rolled steel plate) of the same thickness is used, the service life is reduced to 1.7 About ten thousand times. Although there is no oxide scale on the surface of the semi-hot-rolled washed steel plate, there is a "hard crust", which will seriously reduce the service life of the die.
  17. The shears of the shears are made of this steel.
  18. This steel cold heading die is short-time heating and quenching at low temperature, and the twin martensite structure is obtained when treated according to the original process (780°C×20min salt bath heating and quenching), and there are microcracks under the impact of the impact load. Due to poor toughness , Often produce chipping. Now, it is quenched by salt bath heating at 750°C×14min. After tempering at 200°C, fine flake martensite and low-carbon martensite with a volume fraction of 50% or more can be obtained, which reduces microcracks. While ensuring high hardness, it has high toughness, thereby increasing the service life by nearly double.
  19. The steel can be used to make wire drawing dies and simple punching dies.
  20. Salt bath graded quenching of 20 T10A steel plastic mold ejector rod adopts salt water and oil double liquid quenching, which has large deformation and low oil quenching hardness. It adopts nitrate salt bath graded quenching to increase its service life by 1 to 3 times.
  21. Hardened steel for plastic molds, suitable for making plastic molds with small size, small stress, simple shape and low deformation requirements.
  22. Used for guide post, guide sleeve, pusher guide post, pusher guide sleeve, quenching hardness 50~55HRC.
  23. Used for inclined pins, sliders, and locking wedge of plastic molds, with a quenching hardness of 54~58HRC.
  24. Used for push rod, push tube, quenching hardness 54~58HBC.
  25. Used for feeding chamber and plunger, quenching hardness 50 ~55HRC.
  26. Used for cores, punches, cavity plates, inserts, with a quenching hardness of 46~52HRC, and can also be used for small cores and parts of thermosetting plastic molds.
  27. It is suitable for making thermosetting plastic molding molds that require high wear resistance and small size.

Delivery status: 

The steel is delivered in annealed condition. By mutual agreement, it is also possible to deliver goods without annealing.


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