cobalt based welding wires
Hook:
When metal components face a combination of high temperature, severe abrasive wear, and chemical attack, achieving reliable surface protection and component repair requires a filler metal that can perform under these demanding conditions. Conventional welding wires may not maintain the necessary properties in such aggressive service environments.
Product Overview:
Cobalt based welding wires are filler metals designed for overlaying and hardfacing applications, where the primary goal is to create a wear- and corrosion-resistant surface layer. These wires are formulated from a family of cobalt-chromium-tungsten alloys. The available grades offer different balances of hardness, abrasion resistance, and high-temperature stability, allowing for selection based on the specific wear mechanism and operating conditions. This product line is recognized for its potential utility in extending the service life of critical industrial components.
Common Applications & Key Properties:
Cobalt based welding wires are utilized in industries where components are subjected to intense wear at elevated temperatures. Typical application areas include overlay welding for valve seats and gates, hot shear blades, extrusion screws, pump sleeves, and components in the petrochemical and power generation sectors. Wires within this series can be engineered to deposit weld metal that exhibits properties such as resistance to abrasive wear, galling (adhesive wear), and oxidation or corrosion at high temperatures. Some grades are noted for maintaining performance at temperatures reaching approximately 800°C.
Packaging & Availability:
Our standard cobalt based welding wires are supplied for convenience in common industrial packaging formats. Root length 1000mm, 5 kg per box, 20 kg per carton.
Technical Consultation:
Selecting the most appropriate grade of cobalt based welding wires requires consideration of the base metal, the exact type of wear (abrasion, erosion, impact), and the operating temperature. We can provide data sheets for our different grades upon request. Contact our technical team to discuss your specific hardfacing, overlay welding, or component repair challenge and to determine the suitability of our cobalt based wires for your application.

AWS A5.21RCoCr-B CoCrW 12 mig tig welding wires used in Wood sawtooth,

GB/T 29713 RCoCr-B

YB/T 5092 H112

AWS A5.21 RCoCr-B

ISO 14343-B-RCoCr-B

Description:

ND112 cobalt based surfacing tig welding wires in the Co-Cr-W surfacing alloy with moderate hardness, wear resistance than ND111 good, but slightly less plastic, with good corrosion resistance, heat and wear resistance, about 650 ℃ high temperature Still maintain these characteristics.

Use:

Cobalt based welding wires mainly used for high temperature, high pressure valves, internal combustion engine valves, high pressure pump sleeve and liner sleeve, hot roll hole type welding 

Deposited metal Chemical composition (%)

project (guarantee value):

C 1.2-1.7

Mn ≤1.0

Si 0.4-2.0

Cr 26-32

W 7.0-9.5

Fe 2.0 

Co margin

S -

Cu - 

Reference current (AC, DC-):

diameter(mm)   Welding current(A)

1.6                       50~100

2.0                       100~200

2.5                       200~300

3.2                       300~400

Surfacing layer hardness HRC: 45-50

Key attributes: 

material: cobalt base alloy, Co-based alloy 12 , Co-based alloy 6, Co-based alloy 1, Co-based alloy 4, Co-based alloy 21, cobalt base alloy 12, cobalt base alloy 1, cobalt base alloy 21, cobalt base alloy 6, cobalt base alloy 4

Diameter: 0.8mm/1.2mm/1.6mm

operating temperature: 500-1200

welding current: standard

customized support: support

place of origin: China

model number: AWS A5.21 RCoCr-B

application: wood saw tooth, hot rolling finishing roller pass

operating current: standard

Product name: AWS A5.21RCoCr-B Cocrw 12 mig tig welding wires, Co-based alloy 12 welding wires , Co-based alloy 6 welding wires, Co-based alloy 1 welding wires, Co-based alloy 4 welding wires, Co-based alloy 21 welding wires, cobalt base alloy 12 welding wires, cobalt base alloy 1 welding wires, cobalt base alloy 21 welding wires, cobalt base alloy 6 welding wires, cobalt base alloy 4 welding wires

hrc: 45-50

Package: 5 kg per box, 20 kg per carton

temperature: 500-800 centidegree

tensile of strenght: 840mpa

Standard: aws ERCOCR-B S112

Feature: good heat and wear resistance

Usages: valves, internal combustion engine valves

Shape: mig

Packaging and delivery:

Selling Units: Single item

Single package size: 50X50X30 cm

Single gross weight: 20 kg

Lead time:

Quantity 1 - 450 kilograms Lead time 7 days

Quantity > 450 kilograms Lead time To be 

Precautions:

1. Protection of gas: the use of pure Ar; flow: current in the 100 ~ 200A 9 ~ 14L / min, the current in the 200 ~ 300A 14 ~ 18L / min.

2. Tungsten pole extension length: 3 ~ 5mm; arc length: 1 ~ 3mm.

3. Wind speed limit of ≤ 1.0m / s; Proposed in the welding area on the back of the argon protection.

4. In the welding, the welding line energy directly affects the size of the weld metal mechanical properties and crack resistance, etc., should be more attention.

5. The welding parts of the rust layer, moisture, oil, dust, etc. in addition to the net.The above recommend ations are for reference only, in the specific operation of the prevailing situation prevail. If necessary, first process evaluation and then determine the welding program.