Mechanical Engineering - Engineering Materials - Discussion

The correct answer is light load and pressure.

Tin-base white metals, also known as tin-based babbitts, are used in bearings that are subjected to:

1. Light loads: Tin-base white metals have a low load-carrying capacity, making them suitable for applications with light loads.
2. Low pressures: They are designed for low-pressure applications, as high pressures can cause deformation and wear.
3. Low-to-moderate temperatures: Tin-base white metals have a relatively low melting point, making them suitable for applications with moderate temperatures (up to 150°C/302°F).

Tin-base white metals are often used in:
1. Automotive bearings (e.g., connecting rod bearings)
2. Electrical generators
3. Steam turbines
4. Low-load machinery.

The other options are not accurate:

- Large surface wear: Tin-base white metals are not suitable for high-wear applications, as they are relatively soft.
- Elevated temperatures: High temperatures can cause tin-base white metals to soften and lose their load-carrying capacity.
- High pressure and load: Tin-base white metals are not designed for high-pressure and high-load applications, as they can deform and wear excessively.

=> Note that tin-base white metals are often replaced by more modern bearing materials, such as lead-free copper-based alloys or polymer-based materials.

For low load and pressure phosphor bronze is used and for high load and pressure tin base white metal is used.

Answer must be d.

Tin base white metals for high pressure and load.

For low load lead base alloys are used.

Yes. The answer is High Pressure and load. Not large surface wear.

Option D) high pressure and load is the correct answer.

Option D, high pressure and load is the correct answer.

Yes, the High pressure and load is the correct answer.

Option A is the correct answer as per R.S Kurmi.

High Pressure and load is the correct answer.

I also think A is correct. Agree @Abhilash.