Stainless steel in an alloy steel of the following metals

Options

A. Fe only
B. Cr and Ni
C. W and Cr
D. Ni and Be

Explanation

**Step-by-Step Solution:**

1. **Understanding Stainless Steel**: Stainless steel is a type of alloy that primarily consists of iron. It is known for its corrosion resistance and strength.

2. **Identifying the Key Components**: The main metals that are added to iron to create stainless steel are chromium and nickel. These elements enhance the properties of the steel.

3. **Percentage Composition**: In stainless steel, chromium is typically present in a minimum of 10.5% by weight. Nickel is also added, but the exact percentage can vary depending on the specific type of stainless steel being produced.

4. **Analyzing the Options**:
- **Option 1**: Only iron - This is incorrect as stainless steel contains chromium and nickel.
- **Option 2**: Chromium and nickel - This is correct since both are essential components of stainless steel.
- **Option 3**: Tungsten and chromium - This is incorrect as tungsten is not a primary component of stainless steel.
- **Option 4**: Nickel and iron - This is partially correct but incomplete since it does not mention chromium, which is crucial.

5. **Conclusion**: The correct answer is **Option 2: Chromium and Nickel**.

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