Tungsten Carbide Unground Rods

Product Description

Tungsten carbide unground rods are the backbone of the industrial sector, providing the core raw material for the manufacture of high-performance tools and components that can withstand wear, impact and corrosion. With its unparalleled hardness and exceptional toughness, tungsten carbide offers tool manufacturers a superior, stable and reliable raw material. They represent a critical starting point for enhancing the service life and reliability of end products.

By choosing our tungsten carbide blank rod, you are selecting more than just a raw material.

• The fundamental guarantee of outstanding end-product performance. Premium raw materials are essential for manufacturing top-tier tools.
• Production flexibility and cost control: Tailored solutions to optimise your manufacturing processes.
• A stable and reliable supply chain foundation. A consistent, high-quality supply of materials ensures production stability.
• A long-term technical partner: We provide in-depth support with material selection and the machining process, collaborating with you to overcome technical challenges.

Features of Tungsten Carbide Unground Rods

Room-temperature hardness reaches HRA 88–93, approaching the level of diamonds, which gives end products exceptional wear resistance.

The composition and content of the binder phase can be regulated to achieve a balance between high flexural strength (over 3000 MPa) and excellent fracture toughness. This meets the diverse demands of applications ranging from precision machining to heavy-duty impact.

Advanced sintering techniques such as hot isostatic pressing are used to achieve over 99.9% density, a uniform structure and zero internal defects, ensuring consistent performance.

It maintains high hardness at elevated temperatures (superior red hardness) and offers outstanding resistance to acid and alkali corrosion.

A complete series is offered, ranging from low-cobalt (high hardness and wear resistance) to high-cobalt (high toughness and impact resistance) grades (e.g. YG6, YG8 and YG15, as well as custom grades), which can be matched precisely to diverse operating conditions.

Standard round bar diameters range from 3 mm to 50 mm, with customisable lengths. Square bars, flat bars and near-net-shape preforms are also available.

Bars with ultra-fine, medium or coarse tungsten carbide grain sizes can be provided to optimise hardness, toughness or wear resistance as required.

Specifications of Tungsten Carbide Unground Rods

Specification D*L	Diameter Tolerence	Length Tolerence
φ1.0-2.5*330	﹢0.25	﹢7.0
	﹢0.15	﹢3.0
φ3.0-9.5.5*330	﹢0.40	﹢7.0
	﹢0.20	﹢3.0
φ10.0-15.0*330	﹢0.50	﹢7.0
	﹢0.30	﹢3.0
φ15.5-19.5*330	﹢0.60	﹢7.0
	﹢0.30	﹢3.0
φ20.0-29.5*330	﹢0.70	﹢7.0
	﹢0.40	﹢3.0

Outer Diameter(mm)	Inner Diameter(mm)	Length Diameter(mm)	OD Tolerence(mm)	ID Tolerence(mm)	Length Tolerence(mm)
φ2-7	φ0.4-3.0	330	﹢0.6	﹢0	﹢7.0
			﹢0.2	﹣0.2	﹢3.0
φ8-11	φ0.4-7.0	330	﹢0.7	﹢0	﹢7.0
			﹢0.3	﹣0.2	﹢3.0
φ12-19	φ0.4-10.0	330	﹢0.9	﹢0	﹢7.0
			﹢0.4	﹣0.3	﹢3.0
φ20-30	φ0.4-10.0	330	﹢1.0	﹢0	﹢7.0
			﹢0.5	﹣0.3	﹢3.0

Outer Diameter (mm)	Double Inner Hole Diameter (mm)	Pitch-raw TK(mm)	Length (mm)	OD Tolerance    (mm)	ID Tolerance  (mm）	Pitch-raw TK(mm)	Length Tolerance         (mm)
φ4-11	φ0.8-1.4	1.72-4.85	330	﹢0.4	±0.10	±0.20	﹢7.0
				﹢0.3			﹢3.0
φ12-19	φ1.75-2.0	5.85-8.85	330	﹢0.7	±0.15	±0.25	﹢7.0
				﹢0.4			﹢3.0
φ20-24	φ2.5	9.80-11.75	330	﹢0.8	±0.20	±0.30	﹢7.0
				﹢0.5			﹢3.0
φ25-30	φ3.0	11.75-13.75	330	﹢0.9	±0.25	±0.35	﹢7.0
				﹢0.5			﹢3.0

Grade Selection for Tungsten Carbide Unground Rods

Grade	ISO Grade	Chemical Component		Mechanical Property			Application
		WC	Co	Density g/cm3	Hardness HRA	TRS     ≥N/mm²
YG6	K10	94	6	14.9	91	1420	Suitable for finishing of cast iron,non-ferrous metals,alloys and non-metallic materials,and semi-finishing vehicles for intermittent cutting.
YG6X	K10	93.5	6	14.9	91.5	1600	Cast iron, non-ferrous metals and alloys, non-metallic materials, medium to cutting, semi-finishing and finishing.
YG8	K20	92	8	14.9	90	1600	Suitable for casting of cast iron, non-ferrous metals and their alloys and non-metallic materials, roughing of sections and rough cutting.
YG10	K20-K30	90	10	14.7	89	1900	Suitable for the production of drawing dies, wear parts and stamping parts and cores for hard alloy automatic presses.
YG10X	K20-K30	89	10	14.7	89.5	2200	Suitable for small diameter micro drills, end mills, rotary boring tools, etc.
K30UF	K20-K30	89	10	14.7	91-92	2200	Suitable for small diameter micro drills, end mills, rotary boring tools, etc.
YG15	K40	85	15	14.7	87	2300	Forging, perforating and stamping tools for steel bars and steel tubes with high compression ratios and working under large stresses.

Typial Applications

• Cutter and Tunnelling Teeth: These are core tooth blanks for coal cutter teeth, tunnelling machine cutter disc teeth and milling machine cutting tools. Once cut and welded, these bars come into direct contact with coal and rock, achieving efficient crushing thanks to their exceptional hardness and toughness.
• Oil/Gas Drill Bits: Used as blank material for cutting and gauge teeth in drill bits operating under deep-well conditions involving high pressure, high temperature and severe wear.
• Geological Exploration and Percussion Drills: Produces ball-tooth and cone-tooth blanks for exploration and down-the-hole drills used in mining, hydrological engineering and infrastructure pile holes.
• Top-hammer Drill Bits: Used for drill bit teeth in open-pit mining and rock excavation.
• PCB Micro-drills and Milling Cutters: Micro-drills with a diameter of less than 0.1 mm for drilling printed circuit boards. These bars require extremely high uniformity and rigidity, and are critical foundational tools for the electronics industry.