A |  B |  C |  D |  E |  F |  G |  H |  I |  J |  K |  L |  M |  N |  O |  P |  Q |  R |  S |  T |  U |  V |  W |  X |  Y |  Z

HV- Hardness on the Vickers scale

Hard Drawing- the process of drawing metal through a die to reduce size and increase tensile strength

Hardenability- The capability of a metal to harden under heat treatment

Hardening- to increase hardness by a suitable process, normally heat treatment followed by cooling.

Hardness- the resistance of a metal to deformation, indentation or penetration by means including impact and scratching.  Measured on a variety of scales (Rockwell A, B,C, D, Brinnel, Vickers).  Hardness is also indicated by tensile strength.

Heat Affected Zone- The area of a metal which was not melted during a process (cutting, welding etc) but whose structure and properties have been altered.

Heat Treatment- Heating and cooling a material to achieve desired changes in structure and properties.

Homogenising- A process carried out to improve the structure of a metal by diffusion within different cyrstals, therefore decreasing or eliminating chemical segregation.

Honing- the process of removing material generally from the internal wall of a cylinder (pipe for example) normally using an abrasive stick mounted on a holder.

Hot Working- Deformation of a material under elevated temperatures.  The lower limit of this temperature must allow recrystallisation, while the upper limit must not exceed that at which  strain hardening may occur.

Can't find it here? Let us know and we will add it!