Cold Work Tool Steel

The blanking and forming of materials in cold condition is done in many different application such as; shearing, punching, cold forging, drawing, cold extrusion, rolling and powder pressing.

All applications include high mechanical forces and sliding contact between the tool surface and the work material. There are high demands on tool hardness to give wear resistance and resistance to plastic deformation. In order to improve the wear resistance further some of the cold work steel grades are highly alloyed giving hard particles (carbides) in the matrix. The combination of high hardness and hard carbides is however also impairing the machinability.

MD Exports LLP can provide you with tool steels from a program of high quality tool steels covering all your demands. Low alloyed carbon tool steel grades, high-alloyed conventional metallurgy grades as well as powder metallurgical grades. Depending on the application, the work material and the production series, a cold work tool steel program and high speed steel program will contain grades with different combinations of:

• Wear resistance
• Resistance to plastic deformation
• Chipping resistance
• Total cracking resistance
• Good machinability and grind ability

Cold work steel is exposed to high stresses and requires great resistance against wear, impact and bending. The development of new steel grades is mainly guided by analyzing damage suffered by tools in various processes. In each area of use, properties are sought which will extend the working life of the tool. Different types of wear demand different types of steel. Product development is moving towards producing more robust steels with higher resistance to wear and greater durability.

We can help the tool user to choose the right steel and heat treatment for the application. This usually results in lower tooling costs, lower maintenance costs and less downtime.

Specification

1.2080 / X210Cr12 Steel

DIN 1.2080 / X210Cr12 Steel is a high Carbon and high Chromium cold work tool steel. The 1.2080 steel has good hardenability and wear resistance.  But due to the carbon content of X210Cr12 steel is high,which makes this material hard and brittle. So din 1.2080 can not afford a bigger punch load and has low impact toughness.

Chemical Composition

C: 1.90-2.20; Si: 0.10-0.60; Mn: 0.20-0.60;

P: max0.030; S: max0.030; Cr: 11.00-13.00;

Equivalent Grades

AISI/ASTM: D3

BS: BD3

JIS: SKD1

Russia: KH12

Form of 1.2080

Round / Flat Bars, Plates, Blocks

Size of X210Cr12

Round bar

dia. 1-16mm (Cold Drawn);

dia. 10-50mm (Hot Rolled);

dia. 50-180mm (Hot Forged);

dia. 180-300mm (Free Forging);

Flat bar

Thickness: 1-2.5mm(Cold Rolled); 1.5-20mm(Hot Rolled); 20-300mm(Hot Forged);

Width: Max800mm;

Surface Condition of 1.2080 Steel

Black, Peeled, Rough Machined, Ground

Hardness of X210Cr12 Steel

Annealed (+A): 217-269HB

Mechanical Properties of W-Nr 1.2080 Steel

Tensile strength

Yield point

Percentage reduction of area after fracture

Elongation after fracture

Impact test

Quenched and Tempered (+QT) of 1.2080 / X210Cr12

1. Heat din 1.2080 steel to the hardening temperature of 950-1000°C;

2. Quench in the oil then cool down;

3. Heat uniformly to the required tempering temperature;

4. Withdraw X210Cr12 steel from the furnace and cool in air;

5. The general tempering temperature is 200°C which can make the material at 60HRC.

Applications of DIN X210Cr12 Steel

The 1.2080 tool steel is usually used to make cold die that the impact load is small and with high wear resistance. X210Cr12 steel is also used for cold cutting blade,drill sets,gauge,drawing die,stamping die,thread rolling plate,deep drawing die and thread rolling die,etc.

1.2379 / X153CrMoV12 Steel

DIN 1.2379 / X153CrMoV12 Steel is a high carbon and high chromium type cold work tool steel. The Molybdenum and Vanadium compositon of din 1.2379 is more than 1.2601 steel. X153CrMoV12 steel has higher strength and toughness,which makes the comprehensive performance of 1.2379 steel better.

Chemical Composition

C: 1.45-1.60; Si: 0.10-0.60; Mn: 0.20-0.60; P: max0.030; S: max0.030;

Cr: 11.00-13.00; Mo: 0.70-1.00; V: 0.70-1.00;

Equivalent Grades

Germany: X155CrVMo12-1

AISI/ASTM: D2

JIS: SKD11

Form of 1.2379

Round / Square / Flat Bars, Plates, Blocks

Size of X153CrMoV12

Round bar

dia. 1-16mm (Cold Drawn);

dia. 10-50mm (Hot Rolled);

dia. 50-180mm (Hot Forged);

dia. 180-300mm (Free Forging);

Flat bar

Thickness: 1-2.5mm(Cold Rolled); 1.5-20mm(Hot Rolled); 20-300mm(Hot Forged);

Width: Max800mm;

Surface Condition of 1.2379 Steel

Black, Peeled, Rough Machined, Ground

Hardness of X153CrMoV12 Steel

Annealed (+A): max 255HB

Mechanical Properties of W-Nr 1.2379 Steel

Tensile strength

Yield point

Percentage reduction of area after fracture

Elongation after fracture

Impact test

Quenched and Tempered (+QT) of 1.2379 / X153CrMoV12

1. Preheat din 1.2379 steel at the temperature of 805-835°C;

2. Transfer to salt bath standing at the hardening temperature of 1000°C.

3. Withdraw and cool in air.

4. Heat uniformly to the required tempering temperature.

5. Withdraw X153CrMoV12 from the furnace and cool in air.

6. The general tempering temperature is 194-206°C which can make the material at 61-60HRC.

Applications of DIN X153CrMoV12 Steel

DIN 1.2379 steel is used to make high wear resistance of large and complex cold work tool steel,such as cold cut shear blade,cutting die,piping mode,gauge,drawing die,thread rolling die,thread rolling dies,punch,etc.