• H1 Work Hardening Only：
  Applying work hardening process only without any heat treatments in order to achieve the regulated mechanical property.

• H2 Partially annealing after work hardening process ：
  Applying annealing process to lower the strength to a regulated range when the specified value is above the standard during the work hardening process. For those alloys which will be applied age hardening at room temperature, their temper degrees will reach the same level strength as H3. As for the rest of the alloys, their temper degrees will reach the same as H1 but better elongation.

• H3 Applying stabilizing treatment after work hardening：
  Applying the low-temperature heat method to stabilize after the work hardening process. The result will be lower strength but higher elongation. however, the stabilizing treatment can be only applied on alloys with Mg element which will be age softened at room temperature.

• HX1 The tensile strength is between 0 and HX2
  1/8 Hard alloy
• HX2 The tensile strength is between 0 and HX4
  1/4 Hard alloy

• HX3 The tensile strength is between HX2 and HX4
  3/8 Hard alloy
• HX4 The tensile strength is between 0 and HX8
  1/2 Hard alloy

• HX5 The tensile strength is between HX4 and HX6
  5/8 Hard alloy
• HX6 The tensile strength is between HX4 and HX8
  3/4 Hard alloy

• HX7 The tensile strength is between HX6 and HX8
  7/8 Hard alloy
• HX8 The tensile strength of reduction of Area is around 75% with cold working.
  Hard alloy

• HX9 The tensile strength of reduction of Area is above 75% with cold working
  Super hard alloy

• H111 H1111: Applying less temper degree on the work hardening process then H11.

• H112 H112: Applying work hardening process or any heat treatment without other specific manufacturing process.
  ※ Mechanical properties are specified or mechanical properties testings are required.

• H311 H311: Applying less temper degree on the work hardening process then H31.

• H323
  H343
  Able to resist the stress, corrosion and cracking.