Polymet’s gas turbine hardfacing & welding wire product line offers hardfacing cobalt alloys once thought impossible to produce. Below is a full list of Gas Turbine Hardfacing & Welding Wire Cobalt Alloys offered by Polymet:
| PMET # | Trade Name | Specification |
|---|---|---|
| PMET 905 | L-605 (Alloy 25) | AMS 5796, MSRR 9500/23 |
| PMET 906 | Alloy 6 | AMS 5788, MSRR 9500/19, AWS A5.21 ERCoCr-A |
| PMET 909 | Mar M 509 | B50TF89, PWA 1185, CROM RT 5027 B35 |
| PMET 912 | Alloy 12 | MSRR 9500/228, AWS A5.21 ERCoCr-B |
| PMET 913 | Alloy 12H | MSRR 9500/15 |
| PMET 914 | FSX 414 | B50A823 |
| PMET 918 | Mar M 918 | B50A824, AMS 5814 |
| PMET 921 | Alloy 21 | AWS 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, AWS A5.21 ERCoCr-A – 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, AWS A5.21 ERCoCr-B – 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
MSRR9500/15 – Alloy 12 High Carbon 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
AWS A5.21 ERCoCr-E – 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
- MSRR 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 |
