I know. Tell me how many kinds of die steel there are.

Die steel refers to steel containing many metal elements. Die steel (die steel) is used to produce various dies, such as plastic dies, plastic dies, drawing dies, stamping dies, die casting dies, extrusion dies, hot forging dies, etc.

Commonly used die steels (die steels) can be divided into three categories according to their uses and working conditions, namely, cold-working die steels, hot-working die steels and plastic die steels.

1. Cold-working die steel: mainly used for manufacturing dies that are pressed under cold conditions (room temperature). Such as cold stamping die, cold drawing die, cold pier die, cold extrusion die, stamping die, rolling die, etc.

Commonly used cold working die steels are: Cr 12 die steel, Cr 12MoV die steel, SKD 1 1 die steel, D2 die steel, DC53 die steel, 2379 die steel and 25 10 die steel.

2. Hot-working die steel: it is mainly used to manufacture dies in which metals are thermoformed at high temperature. Such as hot forging die, hot extrusion die, die casting die and hot shearing die.

Commonly used steels for hot working dies are: sulfur-free 8407 die steel, 84 18 die steel, 2344 die steel, SKD6 1 die steel, DAC die steel, FDAC die steel and high molybdenum H 13 die steel.

Third, plastic mold steel: also known as plastic mold steel, mainly used for plastic molding molds. Plastic molds rank first in the mold manufacturing industry. There are many kinds of plastic die steel, mainly including: pre-hardening plastic die steel, age-hardening plastic die steel, corrosion-resistant plastic die steel, free-cutting plastic die steel, maraging plastic die steel and mirror-polished plastic die steel.

Commonly used steels for plastic molds are: 23 1 1 mold steel, P20 mold steel, 738H mold steel, 7 18H mold steel, NAK80 mold steel, 2083 mold steel, S 136 mold steel and PM-35 breathable steel.