Top 4 grades of steel making the best molds in the manufacturing industry

Molds are one of the most important materials, if you want the product to be made in the right size, standard shape. So what kind of steel should I choose to make the best template today ?. Let’s find out through this article.

Mold steel includes many types in the market with different uses so the price is also different. According to the purpose of use, it is divided into steel making plastic mold, steel making hot stamping mold, steel making cold stamping mold. Some types of steel made good molds, high quality included.

P20 + Ni

P20 steel is steel grade according to AISI standard (USA), equivalent steel grade is 1.2311 according to DIN standard (Germany). P20 / 1.2311 steel is a type of alloy steel – a type of steel contained in it with a suitable amount of alloy elements.


thép làm khuôn dập nguội P20

Mechanical properties and characteristics of steel P20

P20 / 1.2311 steel has the following outstanding features:
• Able to polish the ball and make good electrical sparks
• Good durability and nitrogen permeability
• Low sulfur content, homogeneous and pure structure
• High polish, EDM and photochemical ability
• Less rough stripes and less hardness increase when electrical sparks are processed
• Excellent cutting performance, uniform hardness everywhere


This type of steel is used in areas such as
• Making accurate plastic molds of medium or large size with long life.
• Making injection molding molds, blow molds, shaped molds, and compression molds of Melamine
• Making furnace head for extruders, machine parts, shaft
• Pressure molds for tin, lead and zinc alloys
• Mold electronic devices, household appliances: TV enclosures, washing machines, air conditioners, front lights, car rear lights …

>> Why choose steel to make cold stamping mold?

SUS420J2 steel

SUS420J2 steel (JIS) is equivalent to steel grades such as DIN 1.2083, 4Cr13 (GB). In the chemical composition contains elements such as:


Characteristics of steel SUS420J2 / 4Cr13

– SUS420J2 steel has high anti-rust, good polishing, good machining, high abrasion resistance
– Conditions of heat treatment and machining: hardness of steel after heating is: 48-52 HRC

thép làm khuôn dập nóng sus420j2

Application of DIN 1.2083 steel

– Mold electronic products
– Helmet mold
– PVC-PET blow mold
– Glass mold
– Synthetic plastic molds
– Rubber mold
– Mold for abrasion-resistant injection molding

SKD11 steel

SKD11 steel is a steel that makes a good cold mold, according to JIS standards. They are equivalent to steel grades such as D2 (ASIM), DIN 1.2379


Characteristics and application of SKD11 cold mold making steel

D2 steel is used for cold stamping, rolling shaft, round knife, state discharge knife, abrasion resistance. Because they have the following characteristics:
– Help improve efficiency and long life
– The cutting surface is smooth, beautiful and resistant to high abrasion force
– Cold mold steel with high abrasion resistance in normal environment
– My low is good and my stress is the lowest.

thép làm khuôn mẫu dập nguội skd11

Steel SKD61

SKD61 steel is made of hot stamping mold or molded with pressure. They are equivalent to steel grades such as H13 (ASIM), DIN 1.2344,


thép làm khuôn dập nóng skd61

Features and applications

SKD61 steel has the ability to increase the life and stability of the mold accurately. They are used in hot stamping molds like
– Pressure casting molds for both aluminum and zinc
– Use in molds, hot machining
– Pressure casting mold
– Metal extrusion head for light metals
– Forging die
– Plastic cylinder
– Push core, furnace head, hot cutter

Above are some steel grades you can refer to when choosing the type of steel making mold. Hopefully the article has brought useful information for readers