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Introduction
Cobalt welding rods are a popular choice for industrial applications that require high levels of wear and corrosion resistance. Made from a cobalt-chromium alloy, Coablt Alloy is known for its excellent mechanical properties, including high hardness, strength, and toughness. 
Composition
Cobalt welding rods are made from cobalt-based alloys with varying compositions depending on the specific grade.
| Grade | Carbon (C) | Manganese (Mn) | Silicon (Si) | Chromium (Cr) | Nickel (Ni) | Molybdenum(Mo) | Tungsten (W) | Cobalt(Co) | Iron(Fe) |
|---|---|---|---|---|---|---|---|---|---|
| Co 1 | 2.2-2.8% | - | 2.0% max | 29.0-33.0% | 3.0% max | 1% max | 11.0-14.0% max | Bal. | 3% max |
| Co 6 | 0.9-1.4% | 1.0% max | 1.5% max | 27.0-31.0% | 3.0% max | 1.5% max | 3.5-5.5% max | Bal. | 3% max |
| Co 12 | 1.1-1.7% | 1.0% max | 1.0% max | 28.0-32.0% | 3.0% max | - | 7.0-9.5% max | Bal. | 3% max |
| Co 21 | 1.0-1.4% | 1.0% max | 1.0% max | 29.0-33.0% | 3.0% max | - | 4.0-6.0% max | Bal. | 3% max |
Advantages
Cobalt welding rods offer several advantages over other materials:
- High hardness: Cobalt welding rods have a high level of hardness, making them ideal for applications that require wear resistance.
- Corrosion resistance: Cobalt welding rods are resistant to corrosion and oxidation, making them suitable for use in harsh environments.
- Toughness: Cobalt welding rods have good toughness, which helps to prevent cracking and other forms of damage.
- Versatility: Cobalt welding rods can be used in a range of applications, including valve seats, pump shafts, cutting tools, and more.
Applications
Cobalt welding rods are commonly used in a range of industries, including aerospace, automotive, and manufacturing. They are particularly well-suited for use in applications where components are subject to high levels of wear, such as valve seats, pump shafts, and cutting tools.
| Application | Description |
|---|---|
| Valve Seats | Cobalt welding rods are often used to make valve seats for engines and other machinery, where high wear resistance is required. |
| Pump Shafts | Cobalt welding rods can be used to make pump shafts, which are subject to high levels of wear and corrosion. |
| Cutting Tools | Cobalt welding rods can be used to make cutting tools such as saw blades and drill bits |
Cobalt welding rods come in different grades, each with specific compositions and properties that make them suitable for various applications. The following section highlights the differences in the applications of four common grades of Cobalt welding rods.
Co 1: This grade is known for its excellent wear resistance, making it suitable for use in high-temperature and high-stress environments. It is commonly used in valve seats, cutting tools, and metal-forming dies.
Co 6: This grade is a versatile option that offers good resistance to wear, corrosion, and oxidation. It is commonly used in valve seats, bearings, and pump shafts, as well as in welding and hard-facing applications.
Co 12: This grade is designed for use in severe wear and corrosion environments. It is commonly used in saw teeth, valve seats, and cutting tools, as well as in the aerospace industry for turbine blades and other high-stress components.
Co 21: This grade is specifically designed for applications that require high levels of corrosion resistance. It is commonly used in chemical processing, pulp and paper production, and marine environments.
The choice of welding rod grade depends on the specific application and the properties required. Co 1 is ideal for high-temperature and high-stress environments, Co 6 is a versatile option that offers good resistance to wear, corrosion, and oxidation, Co 12 is suitable for severe wear and corrosion environments, and Co 21 is designed for applications that require high levels of corrosion resistance.
Shenyang Top New Material Co., Ltd supplies high-quality products. We produced cobalt-based alloy for more than 20 years, and we complete quality management system and after-sales service, the quality can be guaranteed.
Q: Are you a trading company or a manufacturer?
A: We are a factory
Q: How long is your delivery time:
A: Generally it's 7-15 days if the goods are in stock, or it's 7- 20 days if goods are not in stock, it depends on quantity.
Q: Do you provide a free sample? Is it free or extra?
A: Yes, we offer free samples if the product is small, but we don't pay the freight cost.
Q: What is your payment term?
A: 30% in advance, balance before shipment.
Package and Shipping
