253-MA fasteners are carefully made from 253-MA, a high-temperature austenitic stainless steel alloy. This material provides excellent resistance to oxidation and high-temperature corrosion, making it perfect for furnace components, heat exchangers, and other industrial uses in extreme heat. It also delivers impressive creep strength and structural stability at temperatures up to 2000°F (1093°C), making it ideal for tough high-temperature applications.
These fasteners come in a variety of shapes and sizes, including bolts, screws, nuts, washers, and studs. They are used across many industries for tasks like joining parts, sealing against gas or liquid pressure, securing items against vibration, and maintaining strong connections without losing structural integrity. Their flexibility and dependability make them essential in environments that demand reliable fastening solutions.
In addition, 253-MA fasteners excel in settings where resistance to heat and corrosion is critical, such as petrochemical plants, power generation facilities, and automotive exhaust systems. No matter the application, these fasteners provide outstanding mechanical properties and corrosion resistance, ensuring durability and reliability in challenging conditions.
Standard 253-MA Fasteners specifications as per Fasteners manufacturers.
| Material | 253-MA |
| Specification | IS/BS/ASTM |
| Standards | ASTM A193 |
| Size | 3 mm to 200 mm |
| Length | M02 to M30 |
Each 253-MA Fasteners have unique design each of them are used in specific applications. Some of them are mentioned below.
Note that this chart includes only some of the most common sizes of 253-MA Bolt. There are many other sizes available as well, and some applications may require custom sizes or special configurations.
| 253-MA Fasteners | Element (% By Mass) |
|---|---|
| Chromium (Cr) | 20.0–22.0% |
| Nickel (Ni) | 10.0–12.0% |
| Silicon (Si) | 1.40–2.00% |
| Manganese (Mn) | ≤0.80% |
| Carbon (C) | ≤0.05% |
| Phosphorus (P) | ≤0.040% |
| Sulfur (S) | ≤0.030% |
| Nitrogen (N) | 0.10–0.20% |
| Copper (Cu) | 0.10–0.70% |
| Aluminum (Al) | 0.10–0.30% |
| Cerium (Ce) | 0.03–0.08% |
| Density | 7.8 g/cm³ |
| Melting Point | 1371 – 1421°C (2500 – 2590°F) |
| Tensile Strength | ≥515 MPa (≥74.7 ksi) |
| Yield Strength (0.2%Offset) | ≥205 MPa (≥29.7 ksi) |
| Elongation | ≥40% |
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