metco 470aw 10-632

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Metco

470AWChromium-Iron-Nickel AlloyElectric Arc Wire

Technical Bulletin #10-632

Issued October 2000Supersedes January 1997

TM

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#10-632 2Metco 470AW Chromium-Iron-Nickel Alloy Electric Arc Wire

Metco 470AW is a special chromium-iron-nickel alloy which is especially developed for use as a

self-bonding arc spray wire.

Metco 470AW is self-bonding to annealed or hardened carbon steels, annealed or hardened alloy

steels, stainless steels, aluminum, nickel, cast iron, titanium, kovar, columbium and tantalum.

However, it is not self-bonding to copper based alloys or tungsten and cannot be used as a bond

coat under fused coatings.

Applications page 2

Typical Wire Properties page 3

Typical Coating Characteristics SmartArcTM

(200 amps) page 3

Typical Coating Characteristics SmartArc (350 amps) page 4

Coating PhotoMicrographs SmartArc (200 amps) (100x) page 5

Coating PhotoMicrographs SmartArc (350 amps) (100x) page 6

Recommended Finishing Procedures page 6

Safety Recommendations page 6

Storage Requirements page 6

Recommended Parameters SmartArc (200 amps) page 7

Recommended Parameters SmartArc (350 amps) page 8

Metco 470AW coatings are recommended for use in the following applications:

Bond Coatings

Restoration of machinable carbon steels and corrosion resistant steels

Metco

470AW Chromium-Iron-Nickel Arc WireFor Bond Coat Applications

Table of Contents

Applications

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Typical chemical composition (weight %) of Metco 470AW is as follows:

Nickel: Balance

Iron: 25Chromium: 15

Wire diameter size available: 14 ga. (1.63 mm, 0.064 inches)

Air Cap: Fine Fine Fan Hi-Velocity

Primary Air Pressure, psi: 35 60 35 35

Secondary Air Pressure, psi: 0 0 25 0

Surface Profile:

As-Sprayed,

micrometers Ra: 13 - 18 13 - 15 15 - 20 15 - 18

microinches aa: 525 - 725 525 - 600 575 - 800 600 - 700

Hardness:

Superficial hardness, Rb: 90 - 95 90 - 95 90 - 95 90 - 95

Microhardness, HV0.3: 175 - 250 200 - 300 175 - 275 200 - 275

Bond Strength (ASTM C-633)1

:C Grit Blasted Steel,

MPa: >68.5 >68.5 >68.5 >68.5

psi: >10,000 >10,000 >10,000 >10,000

Ground Steel,

MPa: >34.2 >34.2 >34.2 >34.2

psi: >5,000 >5,000 >5,000 >5,000

Density, g/cm3: 7.1 7.1 7.1 7.1

Coating Thickness Limits:

C Grit Blasted Steel,mm: 1.9 1.9 1.9 1.9

0.001 inches: 75 75 75 75

Coating Weight:

kg/m2/0.1mm: 0.71 0.71 0.71 0.71

lb/ft2/0.001: 0.04 0.04 0.04 0.04


Typical Wire Properties

Typical Coating Characteristics SmartArc (200 amps)

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Typical Coating Characteristics SmartArc (350 amps)

Air Cap: Fine

Primary Air Pressure, psi: 35

Secondary Air Pressure, psi: 0

Surface Profile:

As-Sprayed,

micrometers Ra: 15 - 23

microinches aa: 600 - 900

Hardness:

Superficial hardness, Rb: 90 - 95

Microhardness, HV0.3: 200 - 300

Bond Strength (ASTM C-633)1:

C Grit Blasted Steel,

MPa: >68.5

psi: >10,000

Ground,

MPa: >34.2

psi: >5,000

Density, g/cm3: 7.1

Coating Thickness Limits:C Grit Blasted Steel,

mm: 1.3

0.001inches: 50

Coating Weight:

kg/m2/0.1mm: 0.71

lb/ft2/0.001: 0.04

1Bond strength measured using Master Bond EP15 epoxy from Master Bond, Inc., Hackensack, NJ.

Results may vary depending on the curing process and type of epoxy used to perform the bond test.

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Fig. 1 - SmartArc sprayed 470AW with Fine AirCap at 2.4 bar (35 psi).

100m

Fig. 2 - SmartArc sprayed 470AW with Fine AirCap at 4.1 bar (60 psi).

Fig. 3 - Metco 470AW coatings sprayed with Fan

Air Cap at 2.4 bar (35 psi) (primary) and 1.7 bar

(25psi) (secondary) air pressure offer wider spray

patterns.

100m 100m

Fig. 4. SmartArc sprayed 470AW with High

Velocity Air Cap at 2.4 bar (35 psi).

100m

Coating PhotoMicrographs SmartArc (200 amps) (x100)

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The recommended machining parameters for optimal coating are as follows:

Tool Bit: Kennametal K6 or equivalent

Work Speed: 30 - 38 m/min. (100 - 125 SFPM)

Traverse Rate: 0.076 mm/rev. (0.003 in./rev.)Infeed: 0.076 mm/rev. (0.003 in./rev.)

Lubricant: none

The material safety data sheet (MSDS) Metco 470AW is available upon request. If personnel must

be in the spray environment during spray operations, protective clothing, eye goggles, ear protection

and a respirator must be worn. The spray area must always be equipped with suitable exhaust and

dust collection systems.

Wires should be stored in a clean, dry area and preferably kept boxed in a carton.


Fig. 5 - SmartArc 470AW coatings produced at highspray rates with Fine Air Cap at 2.4 bar (35 psi) and

350 Amps (x100).

Coating PhotoMicrographs SmartArc (350 amps) (x100)

Recommended Finishing Procedures

Safety Recommendations

Storage Requirements

100m

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Recommended Parameters SmartArc (200 amps)

Air Cap: Fine Fan Hi-Velocity

Air Pressure:

Primary, bar: 2.4 - 4.1 2.4 2.4psi: 35 - 60 35 35

Secondary, bar: 0 1.7 0

psi: 0 25 0

Operating Parameters:

Voltage, (V): 26 - 28 26 - 28 26 - 28

Amperage, (A): 200 200 200

Hourly Consumption:

kg. Wire: 6.8 6.8 6.8

lbs. Wire 15 15 15

Spray Distance:

mm: 102 - 152 102 - 152 102 - 152

inches: 4 - 6 4 - 6 4 - 6

Wire Clamping Pressure:

bar: 1.7 - 2.4 1.7 - 2.4 1.7 - 2.4

psi: 25 - 35 25 - 35 25 - 35

Front Roller Type: Serrated Serrated Serrated

Deposit Efficiency, %: 70 70 70

Wire Required:

kg/m2/0.1mm: 1.013 1.013 1.013

lb/ft2/0.001: 0.053 0.053 0.053

Coverage:

m2/hr/0.1mm: 6.71 6.71 6.71

ft2/hr/0.001: 284.23 284.23 284.23

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Air Cap: Fine

Air Pressure:

Primary, bar: 2.4psi: 35

Secondary, bar: 0

psi: 0

Operating Parameters:

Voltage, (V): 26 - 28

Amperage, (A): 350

Hourly Consumption:

kg. Wire: 13.6

lbs. Wire: 30

Spray Distance:

mm: 102 - 152

inches: 4 - 6

Wire Clamping Pressure:

bar: 1.7 - 2.4

psi: 25 - 35

Front Roller Type: Serrated

Deposit Efficiency, %: 70

Wire Required:

kg/m2/0.1mm: 1.013

lb/ft2/0.001: 0.053

Coverage:

m2/hr/0.1mm: 13.43

ft2/hr/0.001: 568.45


Recommended Parameters SmartArc (350 amps)

The information provided in this document is for the convenience of Sulzer Metcos customers for the

purpose of evaluation and proper use of the Sulzer Metco product(s) described herein. This document

and the information contained herein is the property of Sulzer Metco and shall not be used, disclosed,

or reproduced in whole or in part for any purpose other than for the use of said product(s). Nor shall

this information be used in any way with goods not manufactured and sold by Sulzer Metco. Sulzer

Metco makes no warranties, express or implied, as to the information contained herein.

metco 470aw 10-632

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