Modified 420 Stainless Steel For Plastic Mold In High Polishing Mirror

Takford special steel is one of the professional suppliers of S136 Mold Steel, We supply S136 Steel Round bar, Flat bar, Plates. S136 tool Steel China supplier and stockholders.We are the biggest the stockholders for S136 in China. Thickness from 8mm up to 500mm, wide max do 2200mm

Description

420 Mold Steel material by electroslag melting smelting with good cast optical activity (mirror processing) good wear resistance and toughness at high temperature with good plasticity because of its high chromium content (13.6%) so its corrosion resistance is excellent, pre-add hard corrosion-resistant mirror mold steel 420 is a mirror rust-proof mold steel.

S136 mold steel with excellent corrosion resistance has been widely applied in the mold industry. However, in order to meet the increasing demands of injection products with complex structure and high quality, selective laser melting (SLM) as a novel manufacturing method is chosen due to its rapid fabricating parts with complex geometric shapes. Further, it is essential to enhance their hardness and wear property to prolong the service life of the injection mold.

Chemical Composition of S136 Mold Steel

S136 mold steel specification

S136 steel equivalent

Equivalent grades: 4CR13/HPM38/S-STAR/PAK90/2083/420/M300 Die Steel

Heat treatment

1.Annealing

In a protected state, heat up to 780 ℃ and then cool to 650 ℃ in the furnace at 10 ℃ per hour and then cool in the air.

2.Stress elimination

After roughing, must be heated to 650 ℃, both hot 2 hours, slowly cooling to 500 ℃, and then cooling in the air.

3.Hardened

Preheating Temperature: 600-850 ℃

Quenching temperature: 980-1050 ℃

Application

High degree of polishing and high requirements of the internal mold, corrosion-resistant plastic molds, production, medical, food industry, and other products. S136 can be used with all molds, due to their special nature, more suited to the needs of special environments.