| Our Cladding |
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Cladding Specifications
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Standard cladding thickness ranges from 0.020 to 0.125 inches.
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Most cladding is applied by hand.
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In cases where there is not sufficient hand access, mechanical aids may be employeed. Inside diameters (ID’s) as small as 1/4" and 6” long have been clad with the aid of an application rod.
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Chamfers and radii as small as 1/8” can be clad.
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Sharp edges (where cladding is required on both sides) will be clad with two types of cloth. The side experiencing greater wear will be clad with the more wear resistant cladding. The other side will be clad with a more ductile material. This combination helps relieve excess stresses that can cause fracturing during the cool-down portion of the cycle.
Standard Tungsten Carbide Cladding Formulas
Cladding Composition (Weight Percentage)
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WC 200 |
WC 210 |
WC 219 |
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Tungsten Carbide* |
62% |
55% |
48% |
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Nickel |
30% |
34% |
39% |
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Chromium |
6% |
7% |
8% |
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Other |
2% |
4% |
5% |
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Total carbide loading from other carbide formation |
68% |
66% |
62% |
*Tungsten Carbide (WC) includes cobalt bonded WC.
Cladding Properties
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WC 200 |
WC 210 |
WC 219 |
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Density (lb/in3) |
0.44 |
0.42 |
0.40 |
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Thermal Conductivity (BTU in/h•ft2•°F) |
230 |
200 |
170 |
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Metallurgical Bond Strength (psi) |
>70,000 |
>70,000 |
>70,000 |
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Porosity |
<3% |
<3% |
<3% |
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Rockwell Hardness (HRC)** |
64-70 |
60-66 |
56-62 |
**Cladding is a composite of tungsten carbide particles dispersed in a nickel-based alloy matrix. The extremely hard carbide particles, with a Vickers Diamond Pyramid Hardness of about 2000 DPH50g [1865 DPH50g is equivalent to 80 Rockwell C Hardness (HRC)], are surrounded by a two-phase matrix (300-800 DPH50g, equivalent to 30-64 HRC). Because of the heterogeneous structure of the cladding, direct Rockwell hardness measurements are an average of the hard particles and matrix, and are not representative of the individual components of the composite.
| Characteristics of Finished Conforma Clad Surfaces | |
| Percentage of tungsten carbide | 48%-62% |
| Distribution | Uniform distribution of large & small carbide particles throughout the composite |
| No interconnected porosity | Since pores at such low levels are not interconnected, claddings are impermeable to high pressure gases and corrosive fluids |
| Rockwell C Hardness | 64 to 70 |
| Shear strength at bond lines | 70,000 PSI |
| Transverse rupture strength | 80,000-100,000 PSI |
The result is a hard protective layer that is extremely wear resistant and very durable. Our cladding combines the hardness of tungsten carbide and the corrosion resistance of nickel chrome boron, resulting in protection that outperforms the competition. Bond strengths are estimated to be in excess of 70,000 PSI, making our material highly resistant to chipping, cracking and flaking.
Field applications verify that 1/16" of our brazed tungsten carbide cladding provides the same erosion protection as 3/4" of chrome carbide weld overlay or 3" of carbon steel.
We develop custom cloth formulations for industry specific applications, and even for individual customers. We clad customers’ components in certain situations, but also can fabricate and provide finished parts that meet customer specifications.
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