[sales-manager301@wococarbide.com]The comparation between grade YG6&YG8

       Material Name: YG6 Category: Tungsten Cobalt

Performance and purpose:

The use strength and impact toughness are good, and the wear resistance is good. The drawing die under the condition of low stress is suitable for drawing steel with a diameter less than 20mm. Non-ferrous metal wires and their wires or rods are also used to control pipes <10mm.

YG20C advanced molding material. Without heat treatment, the inner and outer hardness is uniform. For mass production. It is suitable for the production of cold heading, cold punching and cold pressing molds for standard parts and bearings.

chemical composition

WC: 94%

Co: 6%

Mechanical properties

Density/(g/cm3): 14.6-15.0

Hardness (HRA): 89.5

Flexural strength (σbb/MPa): 145

Impact toughness σK/(J/cm): 2.6

Precautions

1. Matters needing attention during cutting and grinding:

1.1. Tungsten steel is prone to cracking and chipping under impact and excessive processing load. Cemented carbide must be firmly fixed on the worktable before processing.

1.2. Tungsten steel has extremely low magnetic properties. Non-magnetic hard alloys have no magnetism at all. Do not use magnets to fix the hard alloys. Please fix them with fixtures. Please reconfirm whether the workpiece is loose before processing. If so, please fix the workpiece. Until it is firm.

1.3. The processed surface of tungsten steel after cutting and grinding will be very smooth, and the corners will be very sharp, please pay attention to safety when handling and using.

1.4. Cemented carbide is a very hard and brittle material. For fear of impact, it is strictly forbidden to hit the cemented carbide with a metal hammer.

2. Matters needing attention during discharge and wire cutting:

2.1. Tungsten steel has high hardness and high wear resistance, and the operation process will be relatively slow during discharge and wire cutting.

2.2, Tungsten steel is most prone to cracks and corners after electric discharge machining, so please adjust the processing procedure according to the use conditions of the product.

2.3. Tungsten steel often cracks during on-line cutting, so please confirm that there is no defect on the processed surface after processing before proceeding to the next process.

3. Matters needing attention during welding:

3.1. Please select a suitable welding/welding processing plan according to the requirements.

3.2. Tungsten steel is prone to cracks during welding. Please confirm that the processed surface is not damaged after processing before proceeding to the next process.

3.3. When the flying materials (welding iron) generated during welding work adhere to the cemented carbide, the alloy will crack due to rapid heating and cooling. Therefore, please be careful when doing welding work.



4. During HIT processing:

4.1. When piercing or tapping on the packing (diffusion bonding), the packing will shake or the cemented carbide part will crack. Please strengthen the inspection and confirm that there is no abnormality after the operation.

4.2. During all processing operations: all safety devices on the machine must be used during processing operations. Workers must wear safety equipment to protect eyes, hands, feet, head and all parts of the body.



 



 Brief introduction of YG8 hard alloy steel:

 

YG8 tungsten steel characteristics: tungsten-cobalt common cemented carbide, advanced molding material, using refractory metal carbide (such as tungsten carbide, titanium carbide) as the matrix, cobalt or nickel as the binder, and powder metallurgy The composite material produced has high hardness, good wear resistance, and good thermal hardness. Its disadvantage is that it is brittle. The use strength is higher, the impact and shock resistance is better than YG6, but the wear resistance is lower, and the tempering stability is good, up to 800-900℃, without heat treatment, the inner and outer hardness is uniform.

 

Density: 14.5-14.9g/cm³

 

Hardness: ≥89HRA

 

Tensile strength: ≥1500MPa

 

Impact toughness value is 3.0J/c㎡

 

YG8 tungsten steel composition:

 

C: 8.00, WC: 92.00, Co: 8.0

 

YG8 tungsten steel use:

 

1 Suitable for high-speed cutting of cast iron, white cast iron, ductile iron, chromium, nickel stainless steel and other alloy materials in large quantities.

 

2 The concave die for stainless steel deep drawing dies, the recommended hardness value is 62-64HRC, the deep drawing die for bars and pipes.

 

3 can be used to process and produce short-cut ferrous metals, non-ferrous metals and non-metallic materials, such as cast iron, aluminum alloy, copper alloy, plastic, hard bakelite, etc.

 

4 is used for drawing die.