1. Corrosion Resistance: Stainless steel has high resistance to corrosion, but different types of stainless steel may have varying levels of corrosion resistance. Consider the corrosion potential of the environment where the steel will be used when choosing the steel.

2. Temperature Tolerance: Stainless steel can generally withstand high-temperature conditions, but there are specific types of stainless steel designed for use in certain temperature ranges. Take into account the application temperatures.

3. Mechanical Strength: The stainless steel you use should have mechanical strength that meets the requirements of your application. Consider factors such as tensile strength, toughness, and other mechanical properties as needed.

4. Aesthetic Appearance: In some applications, stainless steel has aesthetic importance. Particularly in architectural and decorative projects, appearance matters, so consider factors like surface treatments and polished finishes.

5. Cost: Stainless steel is often more expensive than other materials. Therefore, you should consider your budget and choose a type of stainless steel that fits within your cost constraints.

6. Workability: The workability of stainless steel can affect design and manufacturing processes. Workability includes cutting, welding, bending, and other operations, so consider ease of processing.

7. Chemical Resistance: Select stainless steel that can withstand the chemical environment of your application. If it will be exposed to chemicals, choose a type of steel with appropriate chemical resistance.

8. Standards and Certifications: Check if the stainless steel complies with specific standards and certifications. This can help verify the quality and suitability of the material.

By considering these factors when choosing stainless steel, you can select the most suitable material for your specific application. It's always important to take into account the unique requirements and environmental conditions of your application.