Thermal Spray Wire
Iron Base Alloys

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 Iron Base Alloys offered by Polymet.

PMET # COMPETITOR EQUIVALENTS DESCRIPTION
PMET 709 Tafa 30T LC Steel
PMET 710 Tafa 80T 304 SS
PMET 714 Tafa 38T, Spraysteel 80 HC Steel
PMET 718 Spraysteel LS Low Shrink Steel
PMET 720 Tafa 60T, Metcoloy 2 420 SS
PMET 723 Tafa 55T, Metcoloy 5 18 5 SS
PMET 730 Tafa 88T, Metcoloy 4 316 SS
PMET 731 Tafa Alcro Fe Cr Al

PMET 709

Characteristics and Composition

PMET 709 is a carbon steel wire, copper coated and specifically designed for arc spraying. It produces dense, well bonded coatings with excellent wear resistance, and is widely used for machine element repair, dimensional restoration and wear resistant applications. PMET 709 low shrink characteristics allow for increased coating thickness.

Equivalent to:

TAFA 30T

Rockwell Hardness 95-105 B   Diameter (in)-1/16, (mm)-1.6

AlSiCFe
0.80.20.15Bal

PMET 710

Characteristics and Composition

PMET 710 is a 304 stainless steel wire specifically designed for arc spraying. It produces a dense, well-bonded coating with excellent machinability and wear and corrosion resistance. PMET 710 is widely used for machine element repair, dimensional restoration and wear resistance applications. It has relatively high shrink characteristics and should not be used for coatings over 0.075 inches thick.

Equivalent to:

TAFA 80T

Rockwell Hardness 90-100 B   Diameter (in)-1/16, (mm)-1.6

CrNiMnSiFe
19.09.32.01.0Bal

PMET 714

Characteristics and Composition

PMET 714 is a solid wire specifically designed for flame spraying. It produces a hard, machinable deposit with low shrink, making it ideal for dimensional restoration of parts where thick build-up is required.

Equivalent to:

TAFA 38T

Sulzer Metco Sprasteel 80

Rockwell Hardness 20-25 C   Diameter (in)-1/16, (mm)-1.6

CMnSiFe
0.80.70.3Bal

PMET 718

Characteristics and Composition

PMET 718 is a solid wire specifically designed for flame spraying. It produces a hard, machinable deposit with low shrink, making it ideal for dimensional restoration of parts where thick build-up is required.

Equivalent to:

Sulzer Metco Sprasteel LS

Rockwell Hardness 30-35 C   Diameter (in)-1/8, (mm)-3.2

CrMoMnSiCNiFe
1.51.32.30.10.044.5Bal

PMET 720

Characteristics and Composition

PMET 720 is a 420 stainless steel wire, specifically designed for arc spray processes. PMET 720 forms a dense, well bonded coating, with excellent wear resistance and good corrosion resistance. It is widely used for machine elements repair, dimensional restoration, and wear resistant application. PMET 720’s low shrink rate characteristics allows for increased coating thickness on parts requiring heavier coatings.

Equivalent to:

TAFA 60T

Sulzer Metco Metcoloy 2

Rockwell Hardness 40-45 C   Diameter (in)-1/16, 1/8, (mm)-1.6, 3.2

CrSiMnCFe
13.01.01.00.3Bal

PMET 723

Characteristics and Composition

PMET 723 is an 18/5 stainless steel wire specifically designed for arc spraying. It produces dense, well-bonded coatings with excellent machinability and wear and corrosion resistance. PMET 723 is widely used for machine element repair, dimensional restoration and wear resistance applications.

Equivalent to:

TAFA 55T

Sulzer Metco Metcoloy 5

Rockwell Hardness 90-96 B   Diameter (in)-1/16, 1/8, (mm)-1.6, 3.2

CrMnNiSiFe
188.05.00.5Bal

PMET 730

Characteristics and Composition

PMET 730 is a 316 stainless steel wire specifically designed for arc spraying. It produces a dense, well-bonded coating with excellent machinability and wear and corrosion resistance. PMET 730 is widely used for machine element repair, dimensional restoration and wear resistance applications. It has high shrink characteristics and should not be used for coatings over 0.075 inches thick.

Equivalent to:

TAFA 80T

Sulzer Metco Metcoloy 4

Rockwell Hardness 90-100 B   Diameter (in)-1/16, (mm)-1.6

CrNiMnSiMoFe
17.0122.01.02.5Bal

PMET 731

Characteristics and Composition

PMET 731 is an iron chrome aluminum alloy wire specifically designed for arc spraying. It produces dense, well-bonded coatings with excellent wear and high temperature oxidation resistance. It is widely used for machine element repair and dimensional restoration applications. PMET 731’s low shrink characteristic alloys increased coating thickness. PMET 731 is machinable.

Equivalent to:

TAFA Alcro

Rockwell Hardness 85-90 B   Diameter (in)-1/16, (mm)-1.6

CrAlMnSiFe
23.55.30.451.0Bal