News

What is tunsgten carbide

Dec 08, 2023

Tungsten carbide is a compound of tungsten ,colbalt and carbon, renowned in industry for its superior durability,high heardness,good wear ressitance and high melting point (2,870◦C). It is widely used in applications that require superior wear ressitance or impact resistance, such as abrasives, cutters, dies and punches.

Tungsten carbide comes in grades, different grades,different properties– depending on the cobalt or nickel content percent. Other carbides may be added in order to boost specific properties, especially with regards to density, hardness or transverse rupture strength.Different grades will be chosen for partuicular working positions.For example,Hengrui's HRS1 grades are developed for stainless steel and other hard alloy steel's shaping processing, such as fasteners industries, cold rolled steel products etc.

How is one tungsten carbide product produced

Mix Powder
Blend the powder as formulas
Press the powder press powder into shapes needed with molds
Grind the dies
grind the pressed dies to be more precise
HIP sintering
Sinter the dies in Automatic-controlled furnaces

What grades of tungsten carbide we have?

With 17 years accumulation of experience and research, we have developed 48 Grades independently according to the market feedback.

They can best suit for various working conditions, playing different functions.

Hengrui tungsten carbide-Grades properties
Series	Grade	Equal	Hardness	Co %	Partical size	Usage.
HR00 series	HR001	VA90	83	23.5	2.6	High cobalt coarse particles, good toughness, strong versatility, suitable for processing M16mm-M24mm screws with specialized black material (non acid washing, non phosphating) products, straight rod with tapping cap, its characteristics are both toughness and hardness.
	HR002	VA80	84	25	1.4	High cobalt fine particles, good toughness, and good wear resistance, suitable for processing M16mm and below screws, dry wall nails, dovetail nails, small standard screws, small shrinkage rod molds, six piece molds, nut molds, black material product shrinkage rod with tapping caps and light punching.
	HR003	ST7	85	24	1.2	With high cobalt content, fine particle size, and high strength, it is suitable for processing shrinkage molds below grade 8.8, as well as processing torsion shear, flower teeth, and tapping caps.
	HR004	ST7	85	23	1.4	High cobalt medium particles, suitable for processing 40Cr hat with shrink rod screws, stainless steel screws, engraved light punching, with good wear resistance and toughness.
	HR005	KG3	89.5	10	1.2	Fine particles have high hardness and are suitable for processing conditions that require high wear resistance. They have strong beam molds, high wear resistance and toughness.
	HR006	VA95	82	23	2.8	High cobalt content, coarse particle size, high impact toughness, suitable for processing M20 and above large flange screw molds, and impact resistant cold heading molds.
	HR007	KG6	87	16	1.6	High hardness, suitable for working conditions with high wear resistance, small aperture strong shrinkage molds, and multi station mold stretching molds.
	HR009		86	17	1.4	Medium hardness and good wear resistance, suitable for processing large aperture strong shrinkage molds and extrusion aluminum shell product molds.
	HR011	KG5	88	12.5	1.4	High hardness and good wear resistance, suitable for processing strong shrinkage molds.
	HR012	VA80	84	25	1.2	This material has high cobalt fine particles, good toughness, and good wear resistance. It is widely used for processing small standard screws such as M16mm and below, dry wall nails, dovetail nails, and other small standard screws. It is also used for shrinking rod molds with small shrinkage ratios, six piece molds, nut molds, black material products with shrinking rod caps and light punching.
	HR021		84.5	18.5	2.8	Connecting rod mold, straight rod mold, chamfering mold. Nut mold shaping and stretching
	HR022	ST7	85	19	2.4	Medium cobalt coarse particles, good toughness, and wear resistance, suitable for processing stainless steel hexagonal nut stretching, flat head punching molds, and shrinkage rod stretching molds, φ 30 steel ball mold.
	HR023	ST6	86	15	2.6	Coarse grained alloy, suitable for processing φ High speed steel ball molds, stainless steel balls, bearing steel balls, and carbon steel balls within 20.
	HR029		80.5	26	3.2	With high cobalt content, coarse particle size, good toughness, and large plastic deformation, it is suitable for processing low-carbon steel products with large elongation. We specialize in processing T-shaped bolts and top wire molds.。
HRS series	HRS1		83.5	19.5	2.4	Suitable for processing stainless steel countersunk flange screws and stainless steel nut molds.
	HRS2	VA80	84	24	2.0	Suitable for shaping stainless steel straight rod molds and stainless steel nut molds.
	HRS3	ST6	86	15.5	2.4	Suitable for processing stainless steel shrink rod molds, straight rod molds, and chamfer molds. Stainless steel nut die stretching.
	HRS6		84.5	15	1.6	Medium grained and red punched molds are suitable for processing hot heading molds, hexagonal bolt heads, hot punched bolt molds, nut molds, red punched loose knot bolts, and red punched twisted shear screws.
	HRS7		83.5	20	2.0	Coarse grain size and red punching molds are suitable for processing hot heading molds, hexagonal bolt heads, hot punching bolt molds, nut molds, red punching loose knot bolts, and red punching torsion shear screws.
ZHD series	ZHD82	VA95	81.7	27	2.6	High cobalt content, coarse particle size, high impact toughness, suitable for large screw molds above M20.
	ZHD82A	VA90	82.7	25	2.6	High cobalt coarse particles have good toughness, strong versatility, and are suitable for processing M16mm-M24mm screws.
	ZHD84	VA80	83.7	23	2.6	High cobalt fine particles, good toughness, and wear resistance, suitable for processing M16mm and below screws, dry wall nails, dovetail nails and other small standard screws, as well as shrink rod molds, six piece molds, and nut molds with small shrinkage ratios。
	ZHD86	ST7	84.7	21	2.6	High cobalt medium particles, suitable for processing 40Cr hat with shrink rod screws, light punching, punching molds, etc.
Submicron grain	HW51		88	15	1.2	Suitable for processing strong shrinkage molds, stretching molds, wear-resistant parts, mechanical parts, drawing molds, powder metallurgy molds, and sheet metal.