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Polymet manufactures the highest quality wire in the world for both twin wire arc spray and flame spray operations. Polymet produces over 35 alloys for thermal spray applications. Below is a full list of Thermal Spray Wire Nickel Base Alloys offered by Polymet.
| PMET # | Competitor equivalents | DESCRIPTION |
|---|---|---|
| PMET 806 | Tafa 06T | Nickel |
| PMET 818 | Tafa 78T, Metco 8718 | Alloy 718 |
| PMET 821 | Tafa 06C | Ni 20Cr |
| PMET 860 | Tafa 71T, Metco 8625 | Alloy 625 |
| PMET 860BC | Alloy 625 + Boron Carbide | |
| PMET 876 | Tafa 77T, Metco 8276 | Alloy C-276 |
| PMET 877 | Tafa 70T | Monel |
| PMET 884 BONDRITE® | Tafa 79B, Metco 405 | Ni 20Al |
| PMET 885 BONDRITE® | Tafa 75B, Metco 8400 | Ni 5Al |
| PMET 886 | Tafa 73MXC, Metco 8443 | Ni Cr Al |
| PMET 887 | Tafa 76MXC | Ni Cr Al Y |
| PMET 888 | Tafa 74MXC, Metco 8447 | Ni Mo Al |
| PMET 889 | Tafa 45CT | Ni Cr Ti |
PMET 806
Details
Characteristics and Composition
PMET 806 is a high purity nickel wire specifically designed for arc spraying. PMET 806 produces dense, well-bonded coatings with excellent machineability, electrical conductivity and corrosion resistance. It is widely used for machine element repair applications requiring high corrosion resistance.
Equivalent to:
TAFA 06T
Rockwell Hardness 55-60 B Diameter (in)-1/16, (mm)-1.6
| Ni |
|---|
| 99.0 |
PMET 818
Details
Characteristics and Composition
PMET 818 is a solid wire specifically designed for arc spray systems. It produces a self-bonding nickel-chromium-molybdenum deposit with excellent high temperature oxidation and corrosion resistance. PMET 818 can be used for dimensional restoration of parts.
GE B50TF202 specification approval
Equivalent to:
TAFA 78T
Sulzer Metco 8718
Rockwell Hardness 25-30 C Diameter (in)-1/16, (mm)-1.6
| Ni | Co | Fe | Cr | W | Mo | Al | Si |
|---|---|---|---|---|---|---|---|
| Bal | 9.5 | 14 | 3.8 | 1.6 | 3 |
PMET 821
Details
Characteristics and Composition
Polymet offers a Nichrome Equivalent – PMET 821 (Ni-20Cr) in thermal spray wire form. This alloy produces dense, well bonded coatings that are resistant to high-temperature oxidation and corrosion.
Equivalent to:
TAFA 06C
Rockwell Hardness 85-95 B Diameter (in)-1/16, (mm)-1.6
| Cr | Ni |
|---|---|
| 20.0 | Bal |
PMET 860
Details
Characteristics and Composition
PMET 860 is a high purity nickel chrome wire specifically designed for arc spraying. It produces dense, well-bonded coatings with resistance to corrosion, and stress cracking in caustic mediums.
Equivalent to:
TAFA 71T
Sulzer Metco 8625
Rockwell Hardness 90-95 B Diameter (in)-1/16, (mm)-1.6
| Ni | Cr | Mo | Fe | Cb+Ta |
|---|---|---|---|---|
| 62.5 | 22 | 10.0 | 2.0 | 3.5 |
PMET 876
Details
Characteristics and Composition
PMET 876 is a high purity nickel-chrome-moly-tungsten (Alloy C-276) wire specifically designed for arc spraying. It produces dense, well-bonded coatings with good resistance to corrosion, and stress cracking in caustic, acidic and chloride mediums. It’s high hardness makes it very resistant to abrasion and metal wear.
Equivalent to:
TAFA 77T
Sulzer Metco 8276
Rockwell Hardness 30-40 C Diameter (in)-1/16, (mm)-1.6
| Cr | Mo | Fe | W | Ni |
|---|---|---|---|---|
| 15.0 | 16.0 | 5.0 | 4.0 | Bal |
PMET 877
Details
Characteristics and Composition
PMET 877 is specifically designed for spraying in arc spray and flame spray systems. It produces well-bonded coatings with excellent machineability. PMET 877 has good corrosion resistance, especially in sea water and caustic environments.
Equivalent to:
TAFA 70T
Rockwell Hardness 80-85 B Diameter (in)-1/16, 1/8, (mm)-1.6, 3.2
| Cu | Mn | Fe | Ni |
|---|---|---|---|
| 31.0 | 31.0 | 1.7 | Bal |
PMET 884 BONDRITE®
Details
Characteristics and Composition
PMET 884 BONDRITE® is a cored wire specifically designed for either arc spraying or flame spraying. It is self-bonding to most materials and requires minimal surface preparation. Bond strengths in excess of 9000 psi can be achieved on grit blasted surfaces. PMET 884 BONDRITE®exhibits good resistance to high temperature oxidation and abrasion, and excellent resistance to impact and bending. PMET 884 BONDRITE® can be machined and ground to a finish of 5 micro inches.
Equivalent to:
TAFA 79B
Sulzer Metco 405
Rockwell Hardness 60-80 B Diameter (in)-1/16, 1/8, (mm)-1.6, 3.2
| Al | Ni |
|---|---|
| 20.0 | Bal |
PMET 885 BONDRITE®
Details
Characteristics and Composition
PMET 885 BONDRITE® is a solid wire specifically designed for arc spray systems. It is self-bonding to most materials and requires minimal surface preparation. Bond strengths in excess of 9000 psi can be achieved on clean smooth surfaces. Roughening of the surface by machining, grit blasting or grinding can increase the bond strength up to 10,000 psi. PMET 885 exhibits good resistance to high temperature oxidation and abrasion, and excellent resistance to impact and bending. PMET 885 BONDRITE® can be machined and ground to a finish of 5 micro inches. It is a self-bonding, one step material and is also suitable for the build-up and dimensional restoration of nickel-based alloys. PMET 885 BONDRITE® is widely used as a bond coat for subsequent thermal spray topcoats and as a one step build up material for dimensional restoration of aircraft engines.
Equivalent to:
TAFA 75B
Sulzer Metco 8400
GE B50TF56 & PWA 36937 specification approvals
Rockwell Hardness 65-85 B Diameter (in)-1/16, (mm)-1.6
| Ni | Al | Other |
|---|---|---|
| 93.0 | 4.0-5.5 | 1.7 max |
PMET 886
Details
Characteristics and Composition
PMET 886 is a cored wire specifically designed for arc spray systems. It produces a self-bonding nickel-chromium-aluminum deposit with excellent high temperature oxidation and corrosion resistance. PMET 886 can be used for dimensional restoration of parts and is widely used in aircraft repair market. The coating can be used as an undercoat for ceramics.
Equivalent to:
TAFA 73MXC
Sulzer Metco 8443
Rockwell Hardness 65-85 B Diameter (in)-1/16, (mm)-1.6
| Cr | Al | Ni |
|---|---|---|
| 20 | 7.0 | Bal |
PMET 887
Details
Characteristics and Composition
PMET 887 is a NiCrAlY cored wire specifically designed for arc spray systems. It produces dense, well bonded coatings with excellent high temperature oxidation and corrosion resistance to 1800° F (980° C). It can be used to prevent oxidation of low alloy steels and as an undercoat for ceramics. The coating is machineable.
Equivalent to:
TAFA 76MXC
Rockwell Hardness 75-85 B Diameter (in)-1/16, (mm)-1.6
| Cr | Al | Y | Ni |
|---|---|---|---|
| 22.0 | 10.0 | 1.0 | 14 |
PMET 888
Details
Characteristics and Composition
PMET 888 is a nickel aluminum molybdenum cored wire specifically designed for arc spraying. It produces dense, well-bonded coatings with excellent wear resistance and good corrosion resistance. It is widely used for machine element repair, dimensional restoration and wear resistance applications.
Equivalent to:
TAFA 74 MXC
Sulzer Metco 8447
Rockwell Hardness 75-85 B Diameter (in)-1/16, (mm)-1.6
| Al | Mo | Ni |
|---|---|---|
| 5.5 | 5.0 | Bal |
PMET 889
Details
Characteristics and Composition
PMET 889 is a nickel chrome titanium wire specifically designed for arc spraying. It produces dense, well-bonded coatings with excellent corrosion resistance and good wear resistance. It is highly resistant to sulfur and vanadium atmospheres up to 1825° F. It has proven to be particularly effective as a protective arc spray coating for boiler tubes in black liquor recovery boilers and coal fired utility boilers.
Equivalent to:
TAFA 45 CT
Rockwell Hardness 30-35 C Diameter (in)-1/16, (mm)-1.6
| Cr | Ti | Ni |
|---|---|---|
| 43.0 | 0.7 | 56.3 |