Alloy 20 fasteners are meticulously crafted from a potent alloy comprising nickel, chromium, and molybdenum. This amalgamation yields a material of remarkable strength and corrosion resistance, ideal for deployment in high-temperature environments or areas with elevated acidity levels. Notably, Alloy 20 fasteners feature copper, a pivotal addition that mitigates susceptibility to stress cracking while bolstering resistance against harsh agents like hydrochloric acid and sulfuric acid. This unique composition renders Carpenter 20 fasteners an exemplary choice for industrial applications necessitating steadfast performance in acidic conditions.
UNS N08020 Fasteners offer versatility in shapes and sizes, ranging from bolts, screws, nuts, washers to studs. Their utility extends across various industrial applications, serving multiple functions such as joining components, sealing against gas or liquid pressure, securing items against vibration, and ensuring a robust connection without compromising structural integrity. Their adaptability and reliability make them indispensable in industries requiring dependable fastening solutions.
Furthermore, Alloy 20Cb3 Fasteners find utility in areas where electrical conductivity holds significance, such as electronics manufacturing or circuit board assembly. Regardless of the application, Alloy 20 fasteners present unparalleled strength and performance when compared to alternative materials like stainless steel or brass. Available in various types such as Alloy 20 Nuts, Alloy 20 Washers, etc., they offer robust solutions for diverse industrial needs, ensuring reliability and durability in challenging environments.
Standard Alloy-20 Fasteners specifications as per Fasteners manufacturers.
| Material | Alloy 20 |
| Specification | IS/BS/ASTM |
| Standards | ASTM B366 |
| Size | 3 mm to 200 mm |
| Length | M02 to M30 |
Each Alloy-20 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 Alloy-20 Bolt. There are many other sizes available as well, and some applications may require custom sizes or special configurations.
Chromium (Cr)
19.0 - 21.0%
Nickel (Ni)
32.0 - 38.0%
Molybdenum (Mo)
2.0 - 3.0%
Copper (Cu)
3.0 - 4.0%
Iron (Fe)
27.0 - 32.0%
Manganese (Mn)
≤2.00%
Silicon (Si)
≤1.00%
Carbon (C)
≤0.07%
Phosphorus (P)
≤0.045%
Sulfur (S)
≤0.035%
Niobium (Nb) + Tantalum (Ta)
8xC min. – 1.00% max.
| Density | 8.05 g/cm³ |
| Melting Point | 1350-1440°C (2460-2620°F) |
| Tensile Strength | 80 ksi (550 MPa) |
| Yield Strength (0.2%Offset) | 35 ksi (240 MPa) |
| Elongation | 30% (in 2 inches) |
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