Crystalline Graphite

• HC Grade

  F.C : 85 ~ 99.5%
  Particle : minimum 2㎛

• Characteristics

  Also known as Natural graphite, shows metallic gloss and its particle is in plate crystal form. Refining and chemical purification are usually required to extract 5~12% of graphite from the ore of metamorphic rock. Out of all graphite types, it is the most widely used in various industries as a result of its characteristics: conductivity, lubricity, abrasion resistance, fireproof, and heat resistance.

• Usage

  Power metallurgy, conductive paint, pencil lead, mechanical pencil lead, brake pad, lubricant, carbon brush

Synthetic Graphite

• CS Grade

  F.C : 99%
  Particle : minimum 2㎛

• Characteristics

  Synthetic graphite is made from the plastification under the temperature of 1800℃~2000℃ after the petroleum coke has been desulfurized and then refined. The particle of the material is highly pure and ortho-arranged, henceforth it has the characteristics of electrical resistance, and isotropic crystal structure comparing to the natural graphite.

• Usage

  Friction, Alkaline battery without mercury, lubricant, powder metallurgy, electrical parts, carbon brush and parts, rubber and polymer matrix composites

Amorphous Graphite

• HK Grade

  F.C : 78 ~ 82%
  Particle : minimum 2㎛ (200, 325, 800mesh)

• Characteristics

  Earthy graphite is naturally made like the scaly graphite, however it is called amorphous graphite due to its unisotropic crystal structure. It is formed by metamorphism of deposited carbide and found as a form of lumps in general. The content of real carbon on the amorphous graphite depends on the ore.

• Usage

  Unshaped refractory, shaped refractory, fireproof paint

Expandable Graphite

• EXP Grade

  F.C : 95~98%
  Particle and expansivity
  - 50MESH(270 times)
  - 80MESH(200 times)

• Characteristics

  Crystalline graphite is oxidated by chrome acid and diluted sulfuric acid, and is expanded up to 100~150% of its initial volume by accumulated of the oxidated matter into the graphite layers when highly heated. It is therefore called expanded graphite.

• Usage

  Flame retardant(packing and gasket materials), lagging to cover insulator ingot on steel casting, refractory material of furniture discharge and antistatic of mattress

Petroleum Coke

• PE Grade

  F.C : Over 98%

• Characteristics

  It comes from pyrolysis of petroleum residue and is porous. The residue from the topping is pyrolyzed under 480~520℃ of heat, which it then produces gas and light oil, however, its intermediate oil gets condensed at the same time.

• Usage

  Electrode, metal carbide, metallurgy material

Pitch Coke

• PI Grade

  F.C : Over 98%

• Characteristics

  It is made from carbonization of the coal tar pitch. Volatile matter is less than 1%, and the rest is fixed carbon.

• Usage

  Electrode, carbon bar, carbon bricks, aluminum electrolytic refining