High-strength flange nuts are commonly manufactured from alloy steels, carbon steels, or stainless steels, each tailored to specific performance requirements:
Alloy Steel: Grades like 10.9 and 12.9 (e.g., ASTM A194 Grade 8) are heat-treated to achieve high tensile strengths, making them ideal for heavy-duty applications in construction, automotive, and aerospace.
Stainless Steel: Types such as 304 (A2) and 316 (A4) offer excellent corrosion resistance. Stainless variants, often rated as A2-70 or A4-80, balance strength with protection against rust, suitable for marine, chemical, and food processing industries.
Carbon Steel: While less strong than alloy steel, carbon steel nuts (e.g., 8.8 grade) provide cost-effective solutions for general industrial use.