Polymet was founded in 1967 as a small consulting firm servicing the aerospace industry and quickly grew into a pioneer of the gas turbine hardfacing and welding world. Through a proprietary hot extrusion process, we are able to manufacture very hard alloys with little ductility in small diameter wire form. Applications in the aerospace industry require this small diameter, high performance wire for critical assembly and repair processes. A number of our thermal spray products are also used in this industry for wear and corrosion resistance coatings, abrasion resistance, and high temperature resistance.
We are a company certified to current ISO standards and hold quality approvals and certifications from industry leaders such as General Electric, Pratt & Whitney, Rolls Royce, and Honeywell. Our commitment to quality along every step of the manufacturing process, from raw materials to finished goods, is unparalleled.
Through our dedication to quality, we are able to manufacture high performance wire that will extend product life, increase product efficiency, and decrease operating costs by providing the most superior product on the market.
Polymet offers both nickel and cobalt hot extruded based alloys to supply the industry with the quality wire they need. Our gas turbine hardfacing and welding wire ranges from 0.012” – 0.125” in diameter and may be spooled or cut to specific lengths. These products are suitable for laser welding, GTAW, plasma welding, hot wire TIG, and GMAW. Thermal spray products include aluminum, nickel, zinc, and molybdenum based alloys. They are available in 0.062” and 0.125” diameters.
PRODUCTS FOR THIS MARKET
Nickel Hardfacing & Welding AlloysCobalt Hardfacing & Welding AlloysStainless Steel Welding AlloysThermal Spray Wire
| PMET # | Trade Name | Specification |
|---|---|---|
| PMET 802 | Mar M 002 | |
| PMET 811 | GTD 111 | B50A880 |
| PMET 818 | Alloy 718 | AMS 5832, A5.14 ERNiFeCr-2 |
| PMET 820 | Rene 220 | B50TF239, PCC 1-59-02.061 |
| PMET 823 | GTD 222 | B50A940, B50TF311 |
| PMET 838 | Inconel® 738 | B50TF250, PWA 1495 |
| PMET 839 | Inconel® 939 | B50TF250, PWA1495 |
| PMET 842 | Rene 142 | B50TF274, MSRR 9500/247 |
| PMET 845 | C 242 | MSRR 9500/17 |
| PMET 847 | Mar M 247 | EMS 55447 |
| PMET 854 | Haynes® 230® | AMS 5839, A5.14 ERNiCrWMo-1 |
| PMET 860 | Alloy 625 | AMS 5837, A5.14 ERNiCrMo-3 |
| PMET 863 | C-263 | B50A783, AMS 5966 |
| PMET 865 | Waspaloy® | AMS 5828, MSRR 9500/202 |
| PMET 870 | Hastelloy® W | AMS 5786, A5.14 ERNiMo-3 |
| PMET 875 | Hastelloy® X | AMS 5798, A5.14 ERNiCrMo-2 |
| PMET 880 | Rene 80 | B50TF259 |
PMET 802
Mar M 002 welding wire. Used for gas turbine engine structural components.
| Ni | Co | Fe | Cr | W | Mo | Al | Si |
|---|---|---|---|---|---|---|---|
| Bal | 1.00 | 8.5 | 9.5 | 5.5 |
| Mn | Nb | Ti | Ta | Zr | C | Other | |
|---|---|---|---|---|---|---|---|
| 2.2 | 2.8 | 0.02 |
PMET 811
B50A880 – GTD 111® welding wire for gas turbine engine components
| Ni | Co | Fe | Cr | W | Mo | Al | Si |
|---|---|---|---|---|---|---|---|
| Bal | 9.5 | 14 | 3.8 | 1.6 | 3 |
| Mn | Nb | Ti | Ta | Zr | C | Other | |
|---|---|---|---|---|---|---|---|
| 4.9 | 2.8 | 0.02 | 0.1 |
PMET 818
AMS 5832 – Inconel 718® welding wire for gas turbine engine components
| Ni | Co | Fe | Cr | W | Mo | Al | Si |
|---|---|---|---|---|---|---|---|
| Bal | 18 | 19 | 3.05 | 0.5 |
| Mn | Nb | Ti | Ta | Zr | C | Other | |
|---|---|---|---|---|---|---|---|
| 5.1 | 0.9 | 0.05 |
PMET 820
B50TF239 – Rene 220® welding wire for gas turbine engine frames & casings.
| Ni | Co | Fe | Cr | W | Mo | Al | Si |
|---|---|---|---|---|---|---|---|
| Bal | 12 | 19 | 3.2 | 0.5 |
| Mn | Nb | Ti | Ta | Zr | C | Other | |
|---|---|---|---|---|---|---|---|
| 5.3 | 1 | 3.3 | 0.03 |
PMET 823
B50A940 – GTD 222® welding wire for gas turbine engine components.
| Ni | Co | Fe | Cr | W | Mo | Al | Si |
|---|---|---|---|---|---|---|---|
| Bal | 19 | 22.5 | 2 | 1.2 |
| Mn | Nb | Ti | Ta | Zr | C | Other | |
|---|---|---|---|---|---|---|---|
| 2.3 | 1 | 0.05 |
PMET 838
B50TF191 – Inconel 738® welding wire for gas turbine engine blades and vanes.
| Ni | Co | Fe | Cr | W | Mo | Al | Si |
|---|---|---|---|---|---|---|---|
| Bal | 8.5 | 16 | 2.6 | 1.8 | 3.4 |
| Mn | Nb | Ti | Ta | Zr | C | Other | |
|---|---|---|---|---|---|---|---|
| 0.9 | 3.4 | 1.8 | 0.06 | 0.7 |
PMET 839
B50TF250 – Inconel 939® welding wire for gas turbine engine blades & vanes.
| Ni | Co | Fe | Cr | W | Mo | Al | Si |
|---|---|---|---|---|---|---|---|
| Bal | 19 | 22.5 | 2 | 1.9 |
| Mn | Nb | Ti | Ta | Zr | C | Other | |
|---|---|---|---|---|---|---|---|
| 1 | 3.7 | 1.4 | 0.1 | 0.15 |
PMET 842
B50TF274 – Rene 142 welding wire for gas turbine engine vanes.
| Ni | Co | Fe | Cr | W | Mo | Al | Si |
|---|---|---|---|---|---|---|---|
| Bal | 11.8 | 6.8 | 4.9 | 1.5 | 6.1 |
| Mn | Nb | Ti | Ta | Zr | C | Other | |
|---|---|---|---|---|---|---|---|
| 6.3 | 0.12 | 2.8 Re. 1.2 Hf |
PMET 845
MSRR 9500/17 – C 242 welding wire for gas turbine engine vanes.
| Ni | Co | Fe | Cr | W | Mo | Al | Si |
|---|---|---|---|---|---|---|---|
| Bal | 10 | 20.5 | 10.3 | 0.3 |
| Mn | Nb | Ti | Ta | Zr | C | Other | |
|---|---|---|---|---|---|---|---|
| 0.3 | 0.3 |
PMET 854
Alloy 230 – AMS 5839
| Ni | Co | Fe | Cr | W | Mo | Al | Si |
|---|---|---|---|---|---|---|---|
| 56.0 | 22.0 | 14.0 | 2.0 | 0.35 | 0.5 |
| Mn | Nb | Ti | Ta | Zr | C | Other | |
|---|---|---|---|---|---|---|---|
| 0.65 | 0.10 |
PMET 860
AMS 5837 – Inconel 625® welding wire for gas turbine engine blades.
| Ni | Co | Fe | Cr | W | Mo | Al | Si |
|---|---|---|---|---|---|---|---|
| Mn | Nb | Ti | Ta | Zr | C | Other | |
|---|---|---|---|---|---|---|---|
PMET 863
B50A783 – Hastelloy C-263® welding wire for gas turbine engine frames & casings.
| Ni | Co | Fe | Cr | W | Mo | Al | Si |
|---|---|---|---|---|---|---|---|
| Mn | Nb | Ti | Ta | Zr | C | Other | |
|---|---|---|---|---|---|---|---|
PMET 865
AMS 5828 – Waspaloy ® welding wire for gas turbine engine casings.
| Ni | Co | Fe | Cr | W | Mo | Al | Si |
|---|---|---|---|---|---|---|---|
| Bal | 13.5 | 19.5 | 4.2 | 1.4 |
| Mn | Nb | Ti | Ta | Zr | C | Other | |
|---|---|---|---|---|---|---|---|
| 3.1 | 0.07 | 0.06 |
PMET 870
AMS 5786 – Hastelloy W® welding wire for gas turbine engine hot section components.
| Ni | Co | Fe | Cr | W | Mo | Al | Si |
|---|---|---|---|---|---|---|---|
| Bal | 5.5 | 5 | 24.5 |
| Mn | Nb | Ti | Ta | Zr | C | Other | |
|---|---|---|---|---|---|---|---|
PMET 875
AMS 5798 – Hastelloy X® welding wire for gas turbine engine combustors.
| Ni | Co | Fe | Cr | W | Mo | Al | Si |
|---|---|---|---|---|---|---|---|
| Bal | 1.5 | 18.5 | 21.8 | 0.6 | 9 |
| Mn | Nb | Ti | Ta | Zr | C | Other | |
|---|---|---|---|---|---|---|---|
| 0.1 |
PMET 880
B50TF259 – Rene® 80 welding wire for gas turbine engine blades.
| Ni | Co | Fe | Cr | W | Mo | Al | Si |
|---|---|---|---|---|---|---|---|
| Bal | 9.5 | 14 | 3.9 | 3.9 | 3.1 |
| Mn | Nb | Ti | Ta | Zr | C | Other | |
|---|---|---|---|---|---|---|---|
| 5 | 0.1 | 0.17 |
| PMET # | Trade Name | Specification |
|---|---|---|
| PMET 905 | L-605 (Alloy 25) | AMS 5796, MSRR 9500/23 |
| PMET 906 | Alloy 6 | AMS 5788, MSRR 9500/19, A5.21 ERCoCr-A |
| PMET 909 | Mar M 509 | B50TF89, PWA 1185, CROM RT 5027 B35 |
| PMET 912 | Alloy 12 | MSRR 9500/228, A5.21 ERCoCr-A |
| PMET 913 | Alloy 12H | MSRR 9500/15 |
| PMET 914 | FSX 414 | B50A823 |
| PMET 918 | Mar M 918 | B50A824, AMS 5814 |
| PMET 921 | Alloy 21 | AMS 5385, A5.21 ERCoCr-E |
| PMET 931 | Alloy 31 | AMS 5789, MSRR 9500/25 |
| PMET 972 | Merl 72 | PWA 795, MSRR 9500/248 |
| PMET 980 | T-800® | B50TF193, DMR 34.071 |
| PMET 988 | Alloy 188 | AMS 5801 |
| PMET 994 | CM 64 | B50TF55, PWA 694, MSRR 9500/226, DMR 34.070 |
PMET 905
AMS 5796 – L 605® welding wire for gas turbine hot section components.
| Ni | Co | Fe | Cr | W | Mo | Al | Si |
|---|---|---|---|---|---|---|---|
| 10 | Bal | 20 | 15 |
| Mn | Nb | Ti | Ta | Zr | C | Other | |
|---|---|---|---|---|---|---|---|
| 1.5 | 0.1 |
PMET 906
AMS 5788 welding wire for pump shafts, pump sleeves, and valve seats.
| Ni | Co | Fe | Cr | W | Mo | Al | Si |
|---|---|---|---|---|---|---|---|
| BAL | 28.5 | 4.8 |
| Mn | Nb | Ti | Ta | Zr | C | Other | |
|---|---|---|---|---|---|---|---|
| 1.2 |
PMET 909
B50TF89-PWA 1185 – Mar M 509® welding wire for gas turbine engine blades and vanes.
| Ni | Co | Fe | Cr | W | Mo | Al | Si |
|---|---|---|---|---|---|---|---|
| 10 | BAL | 23.6 | 7 |
| Mn | Nb | Ti | Ta | Zr | C | Other | |
|---|---|---|---|---|---|---|---|
| 0.2 | 3.5 | 0.4 | 0.6 |
PMET 912
MSRR 9500/228 – Alloy 12 welding wire for hardfacing of lumber saw blades and cutting tools.
Details
Characteristics and Composition
PMET 912 is a solid cobalt 12 wire. PMET 912 has excellent resistance to many forms of chemical and mechanical degradation over a wide temperature range. PMET 912 attributes are its anti-galling properties, abrasion and corrosion resistance, and oxidation resistance up to its melting range. It can be applied to all weldable steels, including stainless steels.
Specifications
- MSRR 9500/225
- AWS A5.21 ERCoCr-B
Deposit Characteristics
- Abrasion Resistance – High
- Impact Resistance – High
- Corrosion Resistance – High
- Hardness – HRC 43-47
- Hot Wear Hardness – High
Applications
- Saw teeth
- Ball mill guide rollers
- Chipping knives
- Digester rotary feeder
- Burner tips
- Turbine blades
- Sewage, rendering, and oil extraction screws
| Ni | Co | Fe | Cr | W | Mo | Al | Si |
|---|---|---|---|---|---|---|---|
| BAL | 2.5 | 29 | 8 |
| Mn | Nb | Ti | Ta | Zr | C | Other | |
|---|---|---|---|---|---|---|---|
| 1.5 |
| Rockwell Hardness |
|---|
| 44-50 C |
PMET 913
MSRR9500/115 – Alloy 12 H welding wire for gas turbine engine components.
Details
Characteristics and Composition
PMET 913 is a high carbon cobalt based version of cobalt alloy 12 that has been forged into small diameter wire using Polymet’s patented hot extruded wire process. PMET 913 attributes are its anti-galling properties and increased abrasion resistance while maintaining similar properties to the alloy #12. It can be applied to all weldable steels, including stainless steels.
Specifications
- MSRR 9500/15
| Ni | Co | Fe | Cr | W | Mo | Al | Si |
|---|---|---|---|---|---|---|---|
| BAL | 28.5 | 9 |
| Mn | Nb | Ti | Ta | Zr | C | Other | |
|---|---|---|---|---|---|---|---|
| 1.9 |
| Rockwell Hardness |
|---|
| 45-54 C |
PMET 914
B50A823 – FSX 414 LC Welding wire for nozzle guide vane repair of land-based gas turbines
| Ni | Co | Fe | Cr | W | Mo | Al | Si |
|---|---|---|---|---|---|---|---|
| Mn | Nb | Ti | Ta | Zr | C | Other | |
|---|---|---|---|---|---|---|---|
PMET 918
B50TF824, AMS5814, Turbaloy® 918, Mar M 918 welding wire for gas turbine vanes.
Details
Characteristics and Composition
PMET 918 (Turbaloy® 918) is a cobalt-based high temperature alloy. Chromium and nickel are major alloying elements. It is used to repair parts that have endured severe thermal cycling.
Specifications
- AMS 5814
- Mar M 918
- B50A824
Typical Deposit Characteristics
- Excellent high temperature strength
- Galling resistant
Applications
- Gas turbine engine components
- Casting repair
| Ni | Co | Fe | Cr | W | Mo | Al | Si |
|---|---|---|---|---|---|---|---|
| 20 | BAL | 20 |
| Mn | Nb | Ti | Ta | Zr | C | Other | |
|---|---|---|---|---|---|---|---|
| 7.5 | 0.07 |
PMET 921
AMS 5835 – Alloy 21 welding wire for gas turbine components.
| Ni | Co | Fe | Cr | W | Mo | Al | Si |
|---|---|---|---|---|---|---|---|
| 2.75 | BAL | 27 | 5.6 |
| Mn | Nb | Ti | Ta | Zr | C | Other | |
|---|---|---|---|---|---|---|---|
| 0.3 |
| Rockwell Hardness |
|---|
| 25-35 C |
PMET 931
AMS 5789 – Alloy 31 welding wire for gas turbine engine blades.
| Ni | Co | Fe | Cr | W | Mo | Al | Si |
|---|---|---|---|---|---|---|---|
| 10.5 | BAL | 25.3 | 7.5 | 0.7 |
| Mn | Nb | Ti | Ta | Zr | C | Other | |
|---|---|---|---|---|---|---|---|
| 0.7 | 0.51 |
| Rockwell Hardness |
|---|
| 21-57 C |
PMET 972
PWA 795 – Merl 72® welding wire for gas turbine engine blades.
| Ni | Co | Fe | Cr | W | Mo | Al | Si |
|---|---|---|---|---|---|---|---|
| 15 | BAL | 20 | 9 | 4.4 |
| Mn | Nb | Ti | Ta | Zr | C | Other | |
|---|---|---|---|---|---|---|---|
| 0.2 | 3 | 0.35 | 1.5 |
PMET 980
B50TF193 – Tribaloy® T-800 welding wire for gas turbine engine blades.
Details
Characteristics and Composition
PMET 980 (Tribaloy® T-800) is a solid hardfacing wire consisting of cobalt, molybdenum, chromium, and silicon. PMET 980 attains its oxidation, corrosion, and galling resistance from its hard laves phase which is dispersed in a softer solid solution eutectic.
Specifications
- B50TF193
- DMR 34.071
Mechanical Properties
- Tensile strength – less than 70,000 PSI
- Elongation – Nil
- Hardness – 52-62 HRC
Applications
- PMET 980 has found acceptance in a number of applications where galling, abrasion, oxidation, and corrosion are a problem. Applications include pump shaft sleeves, computer hard drives, gas turbine blade shrouds and bases.
| Ni | Co | Fe | Cr | W | Mo | Al | Si |
|---|---|---|---|---|---|---|---|
| BAL | 17.5 | 28.8 | 3.5 |
| Mn | Nb | Ti | Ta | Zr | C | Other | |
|---|---|---|---|---|---|---|---|
PMET 988
AMS 5801 – HS 188® welding wire for gas turbine engine hot section components.
| Ni | Co | Fe | Cr | W | Mo | Al | Si |
|---|---|---|---|---|---|---|---|
| 22 | BAL | 3 | 22 | 15 | 0.4 |
| Mn | Nb | Ti | Ta | Zr | C | Other | |
|---|---|---|---|---|---|---|---|
| 0.1 | 1.1 |
PMET 994
B50TF55 – PWA 694 – CM64 welding wire for gas turbine engine blades.
Details
Characteristics and Composition
PMET 994 (PWA 694) is a solid cobalt hardfacing wire. PMET 994 provided high strength and stability at temperatures up to 2100° F. Deposits of PMET 994 have outstanding resistance to wear, erosion, creep, thermal fatigue, and oxidation.
Specifications
- PWA 694
- B50TF55
- MSR 9500/226
- DMR 34.070
Typical Deposit Characteristics
- Abrasion Resistance – Good
- Corrosion Resistance – Good
- Erosion Resistance – Good
- Impact Resistance – Fair-poor
- Hardness – 47-54 HRC
Applications
- Gas turbine blades – shroud interlocking surface and other sites of wear.
| Ni | Co | Fe | Cr | W | Mo | Al | Si |
|---|---|---|---|---|---|---|---|
| Mn | Nb | Ti | Ta | Zr | C | Other | |
|---|---|---|---|---|---|---|---|
| Rockwell Hardness |
|---|
| 47-54 C |
PMET 747
347 SS – AMS 5680
Details
Characteristics and Composition
| Ni | Co | Fe | Cr | W | Mo | Al | Si |
|---|---|---|---|---|---|---|---|
| 11.0 | Bal | 18.0 |
| Mn | Nb | Ti | Ta | Zr | C | Other | |
|---|---|---|---|---|---|---|---|
| 1.0 | 0.06 |
PMET 884
Details
Characteristics and Composition
PMET 884 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 exhibits good resistance to high temperature oxidation and abrasion, and excellent resistance to impact and bending. PMET 884 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
Details
Characteristics and Composition
PMET 885 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 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 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 899
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 |
