ALFA STELLITE 6 COBALT-BASED ALLOY

ALFA STELLITE 6 COBALT-BASED ALLOY – Welding Rod / Wire

Rs. 7,800

ALFA

STELLITE 6 Wire

1000 In Stock

ALFA Stellite 6 is a cobalt-based, wear-resistant alloy filler material designed for hardfacing and welding applications where excellent resistance to wear, galling, corrosion, impact, and cavitation erosion is required.

Stellite 6 consists of complex carbides dispersed in a cobalt-chromium alloy matrix. It offers good all-round performance and is widely used for general-purpose wear-resistant applications. The alloy retains a reasonable level of hardness up to approximately 500°C (930°F).

The material is suitable for a variety of hardfacing processes, including TIG weld deposition, MMA weld deposition, MIG weld deposition, PTA and laser weld deposition. Typical applications include valve seats and gates, pump shafts and bearings, erosion shields, and rolling couples.

Key Features

  • Cobalt-based wear-resistant alloy
  • Excellent resistance to wear and galling
  • Good corrosion resistance
  • Excellent resistance to mechanical and chemical degradation
  • Good impact and cavitation erosion resistance
  • Retains useful hardness at elevated temperatures
  • Suitable for a variety of hardfacing processes
  • Available in rod and wire forms
  • Suitable for industrial wear-resistant applications

Technical Specifications

Specification Details
Brand / Make ALFA
Alloy Stellite 6
Alloy Type Cobalt-Based Alloy
Cobalt (Co) Base
Chromium (Cr) 27–32%
Tungsten (W) 3–6%
Carbon (C) 0.9–1.4%
Other Elements Ni, Fe, Si, Mn, Mo
Hardness 36–45 HRC
Hardness 380–490 HV
Density 8.44 g/cm³
Melting Range 1250–1360°C
Product Forms Rod / Wire
Application Wear-Resistant Hardfacing

Welding / Deposition Processes

Suitable product forms and deposition processes indicated in the technical document include:

  • TIG Weld Deposition
  • MMA Weld Deposition
  • MIG Weld Deposition
  • PTA Weld Deposition
  • Laser Weld Deposition

Typical Applications

Stellite 6 is suitable for wear-resistant hardfacing applications such as:

  • Valve seats
  • Valve gates
  • Pump shafts
  • Bearings
  • Erosion shields
  • Rolling couples
  • Components exposed to wear
  • Components exposed to galling
  • Cavitation erosion protection
  • General-purpose wear-resistant applications

Corrosion Resistance

The technical data states that Stellite 6 primarily undergoes pitting corrosion rather than general mass loss in seawater and chloride solutions. The stated mass loss in seawater is below 0.05 mm per year at 22°C.

Mechanical Properties

Property Approximate Value
Ultimate Tensile Strength 850 MPa
Yield Stress Rp(0.2%) 700 MPa
Elongation <1%
Elastic Modulus 209 GPa

Values shown are for castings at room temperature according to the supplied technical document.

Thermal & Electrical Properties

Property Value
Thermal Conductivity 14.82 W/m·K
Electrical Resistivity 106 μ-ohm·cm

Hot Hardness

The supplied technical data gives the following approximate as-cast hardness values:

Temperature Hardness DPH
20°C 410
100°C 390
200°C 356
300°C 345
400°C 334
500°C 301
600°C 235
700°C 155
800°C 138
900°C 95

Specifications / Standards

The technical document lists:

  • UNS R30006 – Rod, Castings
  • UNS W73036 – Wire
  • AMS 5788 – Rod, Wire
  • AWS A5.21 / ASME BPVC IIC SFA 5.21 ERCoCr-A – Rod
  • AWS A5.21 / ASME BPVC IIC SFA 5.21 ERCCoCr-A – Wire
  • AWS A5.13 / ASME BPVC IIC SFA 5.13 ECoCr-A – Electrode

Product Forms

Stellite 6 is documented as being available in:

  • Spooled welding wire
  • Solid wire
  • Cored wire
  • Rod
  • Powder
  • Electrodes
  • Finished castings
  • Powder metallurgy components
  • Additively manufactured components

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