Alloy 20 Round Bar is a premium nickel-iron-chromium alloy round bar manufactured to ASTM/ASME specifications (typically ASTM B462 / ASME SB462, UNS N08020). Alloy 20 – also commonly known as Carpenter 20 or Incoloy 20 – combines superior corrosion resistance with good mechanical strength, making it ideal for demanding industrial applications where aggressive media and corrosion-induced degradation are major concerns.