Hot Forged 1.2316 SUS420j 3cr17mo Alloy Flat Bar Tool Steel For Die

Steel Grade

p20 1.2311 1.2738 1.2312

Specification

Round Bar: diameter 8mm – 3000mm
Plate: thickness 10mm – 1500mm x width 200mm – 3000mm
Grade Square: 20mm – 500mm

Standard

AIS JIS DIN GB EN

HS Code

72283024 72254000 7208511000

Forging

Preheat the steel carefully, heat to 1150 oC – 1200 oC maximum, hold until temperature is uniform throughout the section.
Do not forge below 850 oC.Following forging operation the work piece should be cooled as slowly as possible.

Heat Treatment

Heat steels to 800 oC – 850 oC, hold until temperature is uniform throughout the section and cool in furnace.

Hardness

Anneal: ≤220HB Q+T: 28-34HRC HEAT TREAT MENT 55-62HRC

Application

1. Develop materials that are easy to process and good in polishing

With the production of optical disc, disk, prism and other precision parts, the demand for easy machining mirror steel increases.
This kind of steel contains less non-metallic impurities, fine metallographic structure uniform, no fiber direction. It is the
main development direction of plastic mold steel.

2. The corrosion resistant steel

In the process of long-term operation and maintenance of the mold, it is easy to rust and corrosion, and with the addition of
various components in plastic molding, the mold is more prone to corrosion. Therefore, it is required to improve the corrosion
resistance of the base material body, and some corrosion-resistant stainless steel has been developed.

3. Maraging alloy steel

This kind of steel has enough mechanical properties and outstanding process properties, especially high strength, toughness, wear
resistance, low coefficient of thermal expansion, is a good steel for the manufacture of injection molding, but the price is
expensive.

4. Cemented carbide

Mainly used in the production of high life requirements, the production of large batch of molds