302 Stainless Sheet
302 stainless sheet is a type of stainless steel sheet that is often used in various applications due to its high corrosion resistance, heat resistance, strength, and toughness. It is a variant of the 18-8 stainless steel, with a higher carbon content, which gives it improved high-temperature strength.
This type of stainless steel sheet is commonly used in the manufacturing of various products such as aircraft parts, mufflers, engine parts, kitchen appliances, and many others. It is also used in architectural and construction applications.
302 stainless sheet is known for its ability to maintain its properties even when exposed to extreme temperatures and harsh environmental conditions. It is also easy to clean and maintain, which makes it a popular choice in industries where hygiene is a priority, such as food and beverage and medical industries.
Chemical Properties:
| C | Mn | Si | P | S | Cr | Ni | N | |
|---|---|---|---|---|---|---|---|---|
| 302 | max: 0.15 | max:2.0 | max: 0.75 | max: 0.045 | max: 0.03 | min: 17.0 max: 19.0 | min: 8.0 max: 10.0 | max: 0.10 |
Mechanical Properties:
| Grade | Tensile Strength ksi (min) | Yield Strength 0.2% ksi (min) | Elongation % | Hardness (Rockwell B) MAX |
|---|---|---|---|---|
| 302 | 75 | 30 | 40 | 92 |
Physical Properties:
| Density lbm/in3 | Thermal Conductivity (BTU/h ft. °F) |
Electrical Resistivity (in x 10(-6)) |
Modulus of Elasticity (psi x 10(6)) |
Coefficient of Thermal Expansion (in/in)/ °F x 10(-6) |
Specific Heat (BTU/lb/ °F) |
Melting Range (°F) |
|---|---|---|---|---|---|---|
| at 68°F: 0.285 | 9.4 at 212°F | 72.0 at 70°F | 28 | 9.6 at 32 – 212°F | 0.1200 at 32°F to 212°F | 2500 to 2590 |
| 12.4 at 932 °F | 10.2 at 32 – 1000°F | |||||
| 10.4 at 32 – 1500°F |
CORROSION RESISTANCE
Type 302 stainless steel has good corrosion resistance and is one of the most common stainless steels due to its wide usage in a variety of industries. It provides strong resistance to many types of corrosion, including oxidation and most organic chemicals.
However, it is less resistant to corrosion compared to higher alloyed stainless steels when exposed to certain types of environments, such as those with high levels of chlorides or other harsh chemicals. It is also susceptible to pitting and crevice corrosion in warm chloride environments, and to stress corrosion cracking above about 60 °C.
To ensure the longevity and performance of 302 stainless steel, it should be properly cleaned and maintained. It is also important to consider the specific environmental conditions and chemical exposures it will face in its intended application.
Common Applications of 302
1. Stainless Steel: 302 stainless steel is widely used in the manufacturing of various types of machinery and equipment due to its excellent mechanical properties and corrosion resistance. It is commonly used in the production of kitchen utensils, food processing equipment, medical instruments, automotive parts, and aerospace components.
2. Spring Material: used as a spring material due to its superior strength and elasticity. It is commonly found in mechanical springs, coil springs, and tension springs.
3. Wire Rope: also used in the production of wire ropes due to its excellent tensile strength and corrosion resistance. These wire ropes are often used in various industries such as construction, mining, and shipping.
4. Jewelry: Due to its shiny appearance and resistance to tarnish, 302 stainless steel is also used in the jewelry industry. It is often used to make necklaces, bracelets, rings, and other types of jewelry.
5. Electronics: also used in the electronics industry. It is often used in the production of connectors, terminals, and other electronic components due to its excellent conductivity and corrosion resistance.
6. Construction: also used in the construction industry. It is often used in the production of structural components, roofing materials, and other construction materials due to its excellent strength and durability.
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