Unique Characteristics | Applications

DH2F Steel

A modified H13 mould steel, pre-hardened to 37-41 HRC with exceptional machinability

Unique Characteristics

38-42 HRc hardness.
Through hardened for exceptional dimensional stability.
Cuts mold making costs by reducing man hours required for machining. Classified as a “free-machining” steel.
Ideal for complex, precision molds and parts susceptible to distortion and/or deformation without needing additional heat-treating.
Ideal for Ion-nitriding.

Applications

Molds for plastics
Diecast die components
Plunger tips, sprue bushings
Diecasting dies for aluminum and zinc
Dies for aluminum extrusions
Press dies
Dieplate strippers
Machine parts

Benefits

Machining

DH2F has a machine rating of 65 out of 100, with 100 being the best rating for pre-hardened mold steels. (For comparison, P20 at 30 HRc has a machine rating of 50.)

DH2F’s superior machinability means extended tool life.

A positive rake cutter with a concave face and chip breaking edge works best.

Example of Tool Life of Face Milling Cutter

Example of Tool Life of HSS Drill Bit

Cutting Parameters

Chip Shape

DH2F (modified H-13, pre-hardened)

H-13

Surface Testing

Surface treating gives DH2F enhanced abrasion and corrosion resistance.

Abrasion Resistance

Erosion Resistance

Erosion testing: An annealed .591″ dia. x .787″ sample is weighed before and after soaking in an aluminum bath at 1,292°F for 30 hours.

Polishing

DH2F is a resulfurised steel and sulfur can affect polishing. We recommend contacting International Mold Steel if you are considering SPI #2 or better polish.