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DC53 Steel

Category : Special Steel
Product Name:DC53 Steel
Classification: Mould Steel
Standard:ASTM A681
  • Description
  • Specification
  • Standard
  • Process
  • Packing

DC53 steel is a new general purpose cold work die and mold steel whose strength and toughness approach those of high-speed steels. DC53 steel, is an improvement over alloy tool steel D2 specified in Standard (JIS) G4404. It eliminates the disadvantages of insufficient hardness and toughness, resulting from high-temperature tempering found with D2, and is intended to replace D2 in use for general purpose and precision dies.


DC53 steel also has excellent machining characteristics and is well suited as a substrate for PVD surface treatments. DC53 steel can also be hot process CVD and TD (Thermal Diffusion) coated, however post heat treat is generally recommended.

Unique Characteristics:

Higher hardness (62-64 HRc) than D2 after heat treatment.

Twice the toughness of D2 with superior wear resistance.

Substantially higher fatigue strength compared to D2.

Smaller primary carbides than D2 protect the die from chipping and cracking.

Secondary refining process (DLF) reduces impurities.

Machines and grinds up to 40% faster than D2.

Less residual stress after wire EDMing.


DC53 Steel Applications:

Stepped punch and press-punching dies

Concrete sprayer parts, rotor plates

Swaging dies and backers

Dies for cold forging

Thread-rolling circular dies

Piercing punch

Thread-rolling dies for heat-treated bolts

Forming dies

Stripper plates for lead frame blanking

Gauges

Screws for injection molding machines

Plastic Molds


These properties are obtained through its chemistry as well as its unique manufacturing processes of ladle refinement, vacuum degassing and forging methods. DC53 also has excellent machining characteristics and is well suited as a sub-straight for PVD surface treatments. DC53 can also be hot process CVD and TD (Thermal Diffusion) coated however post heat treat is generally recommended.

Typical Chemical Composition(%)

C

Si

Mn

Cr

Mo

Mo

0.95

1.0

0.40

8.0

2.0

0.30

DC53 Steel HEAT TREATMENT:

DC53 Heat Treat – DC53 is only as good as the heat treatment it receives. The heat treat process can be broken down into two segments, Hardening & Tempering. DC53 is typically air hardened using a vacuum furnace however it can also be processed by using a gas or electric furnace with or without a controlled atmosphere when wrapped in stainless foil or salt bath hardened by immersing the part in high temperature salts.

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