Introduction of Products

CEMENTED CARBIDE Cemented Carbide

Cemented Carbide
Cemented carbide is a hard metal and a sintered composite material of metal carbides (Group IV, V and VI in periodic table) with ferrous metals, such as Fe, Co and Ni, as binders. WC-Co based alloys have excellent mechanical characteristics so that they are commonly known as cemented carbides. Every alloy has features of stable physical properties and high strength, also with good high-temperature hardness. For cutting tools and other applications, we also provide WC-Co based alloys added with TiC or TaC to increase oxidation-resistance.
Furthermore, cemented carbides with Ni as a binder phase have stronger corrosion-resistance than those with Co and can be used as non-ferromagnetic materials by controlling the solution amount of W into Ni. We can also provide WC-Ni-Cr based alloys progressed in corrosion-resistance by adding Cr.
Fig.1 Structure of Cemented Carbide

Manufacturing Method of Cemented Carbide (Powder Metallurgy)

Cemented carbides are manufactured by the unique method, called powder metallurgy.
It is the method of making forms by sintering the pressed powder.
As tungsten carbide (WC), mainly used in cemented carbides, is very difficult to be melt and formed like iron because of its high melting point (2900 degrees Celsius), cemented carbides are manufactured by this method.

Main Features of Cemented Carbide

Main features of cemented carbide are superb hardness (80 to 94 in HRA), having larger degree of strength than ceramics (more than 2GPa (200kg/mm2) in bending strength), large Young's modulus (3 times larger than iron), great specific gravity (twice as much as iron) and so on.

Cemented Carbide with corrosion-resistance

Nowadays, cemented carbides are adopted in many applications that need high corrosion-resistance. We have been developing and providing various materials through our research about corrosion-resistant property.

Cemented Carbide of Super-fine Grains

Applying super-fine WC grains, we made it possible for our products, such as NT die cutters and mold components, to have high-strength and high-hardness.

Physical Properties of NITTANLOY Wear and Impact

Physical Properties of NITTANLOY Wear and Impact
JIS ClassCIS
019D
NITTNLOYDensity
(g/cm3)
Hardness
HRA
Bending strength
(GPa)
Comprssive strength
(GPa)
Modules of elasticity
(GPa)
Poisson's ratioYoung's modules
(GPa)
Coefficient of thermal expansion
(x10-6/K)
Coefficient of thermal couduntivity
(W/(m*K))
Applications
V10VM-20G114.691.51.85.56400.19637580For its outstanding resistance to wear, the material is used for mechanical seals, rings, nozzles, guides, bushings, inspection gauges, and others.
V20VM-30G214.9912.256300.26305.175
V30VM-40G314.789.52.64.75800.215795.371The material is used for mechanical articles requiring resistance to wear.
 G2014.5892.54.45600.225595.567
V40VM-50G3014.2883.24.35500.225495.767 
 G401487.53.24.25400.225395.965
V50VM-50G5013.886.53.23.85100.235106.263
Fine grain gradesVF-20FN1014.592.52.55.35700.245705.5-The material can be adopted for use in trimming blades, die cutters, and other sharp-edged cutters.
VF-30FN2014.391.52.55.1550-5495.871
VF-30FN3013.990.53.14.7540--667
VF-40FN4013.790.53.14.7530-5306.264
Extra fine frain gradesVF-40SF3013.89244.8545-510667The material is expected to bring a longer service life in super-fine particle alloy applications.
VF-40SF5013.490.53.83.8490-4606.463For its high toughness, the material is suited for use in thin blades and trimming blades.
Reference SKH material8.7833.43.72100.3-1121 
Physical Properties of Corrosion-resistant and Non-Magnetism NITTANLOY
PropertyCIS
019D
NITTANLOYCompositionDensity
(g/cm3)
Hardness
HRA
Bending strength
(GPa)
Compressive strength
(GPa)
Modules of elasticity
(GPa)
Poisson's ratioYoung's modulus
(GPa)
Coefficient of thermal expansion
(x10-6/K)
Coefficient of thermal conductivity
(W/(m*K))
Applications
Corrosion resistanceNM-60NM15WC-Ni -Cr1486.5 2.53.55300.215306.450Non-magnetic die, Blanking dies
NM-40NR8WC-Ni14.889.5 2.34.26000.206005.775general applications requiring resistance against corrosion
NF-40NR11WC-Ni
-Cr-Mo
13.590.0 2.44.65300.215306.163
UM-10RCCLWC-TiC
-TaC
14.794.01.03.66400.206404.870
VF-10RCCFNWC-TiC
-TaC
14.695.0 (*)1.54.16000.206304.972Mirror-finished products, Nozzles
NR11, RCCL and RCCFN are non-magnetic alloys
(*) HR30N
Corrosion Resistance of NITTANLOY
Solu-
tion
 Hydrofluoric acidHydrochloric acidSulfuric acidNitric acidSodium hydroxide Ammonium nitrate Hydrogen peroxide waterPure waterAcetic acidPhosphoric acidCitric acidSeawaterEthanol
Methanol
Concentration (%)20510205105101010100101010100100
Temperature (˚C)50505050505050505050505050505022
NITTAN-
LOY
G2BCCDDBBBCEABDBBA
G3BCCDECBBCEABDBBA
NR8BBBBBBBBCEABBBAA
NR11ACBBBBAAACAABAAA
DUX30/40BBBADDAAACAABABA
RCCLAAABBABBADAAABAA
The test pieces were left alone in a solution of atmosphere for a day and then measured for decreases in weight caused by corrosion. The results were ranked as follows in accordance with DIN4851 (German industrial standard): Ranking (decrease in weight by corrosion)
A: Excellent,2.4g/m2/day or less; B: good, 24g/m2/day or less; C: fair, 72g/m2/day or less; D: poor, 240g/m2/day or less; E:absent, 240g/m2/day or less
NITTANLOY for Cutting Tools
JIS ClassNITTANLOYCompositionDensity
(g/cm3)
Hardness
HRA
Transverse rupture strength
(Gpa)
Compressive strength
(Gpa)
Modulus of elasticity
(Gpa)
Coefficient of thermal expansion
(x10-6/K)
Coefficient of thermal conductivity
(W/(m*K))
P10SN10WC-TiC-TaC-Co11921.64.55206.529
P20SN2012.191.51.84.7530634
SN2512.1911.9----
FL37S12.791.52.1----
P30SN3012.790.524.95505.559
P40SN4013.489.52.44.65505.559
M10UN10WC-TiC-TaC-Co13.2921.64.95705.550
M10213.192.51.7----
M20UN2013.991.51.74.8560-63
M30UN3013.79024.7---
M40UN4013.489.52.44.35305.759
K01UN05WC-TiC-TaC-Co14.3931.76.2---
K10HN1014.2931.86.1-5.580
G1WC-Co14.6921.85.5640580
K20G214.9912.256305.175
K30G314.789.52.64.75805.371
CermetDUX30TiC-TaN-Ni-Mo6.992.51.6----
DUX406.591.51.83.9470729

Cemented Carbide Product Maximum Production Sizes

Inquiry

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