Carbide

Hard as diamond. First introduced by Krupp in 1926 under the brand name “Widia”, the name of this material says it all.

Our carbides are available in any form – as blanks or as ready to use carbide components.

Having a hardness of up to 2000 HV, this material will stand up to even the toughest requirements. Our extensive experience in a wide range of industrial sectors has resulted in carbide grades with the precisely correct material composition for various applications.

Our carbide products are used as guide and drill bushings, rings and round rods, nozzles and valve components, parts for metrology and inspection equipment, molds for ceramic and porcelain manufacturing, cutting inserts and molds iaw. DIN standards, factory standards, to customer drawings, drawing and deep drawing tools, molds, inserts for powder and ceramic press tools, and for screw and nut manufacturing.

The extraordinary versatility of a carbide will secure its outstanding role as a material for wear and machining applications, in corrosion protection, mold engineering, and for stone and mining operations.

Machining

Brazing plates for single-tip or multi-tip brazing tools for processing metals, wood, and engineered wood, graphite, plastics, and rock
Solid carbide tools for drilling, turning, milling, deep drilling, parting, and many others
Carbide rods with round, square, rectangular, or trapezoidal shapes, and for manufacturing specialty tools

Wear engineering and corrosion protection

Sandblasting nozzles in standard and venturi configurations
Jet nozzles for spraying and precision spraying of powders and liquids
Press tools and extrusion tools for manufacturing ceramics, fire-resistant substances, and cement bricks
Molds and punches for pressing metal powders
Rotating knives for paper and printed circuits
Shearing knives for plastics and sheetmetal
Mechanical seals
Valve shafts and valve seats
Wire and rod guide bushings
Milling balls
Carbides made of corrosion-resistant alloys for surgical, chemical agricultural, food-processing, and crude oil applications

Forming tools

Rolling mill, cams, and rotating rollers
Round and formed extruded bricks with as-sintered bore diameters from 0.10 mm
Mandrels
Cores for cold-forming tools
Plates for wire shears
Nut dies
Deburring dies
Dies and punches for deep-drawing and extrusion pressing of non-ferrous alloys
Parts for stamping tools
Dies and punches for munitions tools

Rock and mining operations

Inserts for drilling heads and mining tools of all types
Plates for parting and turning granite, marble, alabaster, and tuff
Plates for manual and mechanical chisels and for bush hammering machinery
Plates for porphyry shears
Chisels for asphalt millers
Glass and tile cutter wheels
Specialty parts for machinery to break down rocks and minerals

Careful monitoring of material compositions and constant innovation of new manufacturing and testing methods ensure the outstanding chemical and mechanical properties of carbides.

Properties

Maximum wear resistance
High, flexible hardness range
High flexural strength
High modulus of elasticity and high stiffness
Maximum compressive strength, good ductility
Good corrosion resistance
Outstanding thermal conductivity
Better thermal resistance than steel grades

Applications

Inserts, cutting bushes, and punches for stamping tool
Molds, punches and dies for pressing powdered metals and ceramic compounds
Bearing rings, valve parts, jet nozzles for powders and liquids
Machining tools of all types
Knives for paper, plastics, sheetmetal, and printed circuits
Wear parts for maximum requirements in machine construction and tool making applications (joining by brazing, gluing, screws, clamps, shrinking, and potting)

Delivery forms

Formed parts to drawing with short leadtimes
Profile rods
Tubes
Plates for wire EDM
Formed parts iaw. DIN ISO standards

Multi-range carbide grades

We can supply all carbide grades, precisely matched to your specific needs, starting with our proven standard grades, continuing with universal multi-range grades, and ending with our specialty grades. The different properties of the individual grades are achieved with various mixture ratios of the components, and by selecting and combining the tungsten carbide grain shape and grain size, along with precisely matched process controls.

NHT has specific grades in outstanding quality for any requirement.

NHT fine-grained grades

In response to permanently increasing requirements for our carbides, we created innovative solutions in particular based on our highly-densified fine-grained grades GM05F, GM10F, GM15F, GM25F.

The fine-grained grades give you the following benefits compared to standard grades:

Very high ductility behavior based on high flexural strength – up to 3900 N/mm²
Maximum wear resistance due to high hardness – up to HV 2000
High edge stability due to a very fine, dense, and homogenous grain structure; as a result, these materials are particularly suited for punching and cutting tools.