Technical specifications and scope of application according to the ASTM B514 standard
This specification defines strict requirements for the production and quality of welded tubes made from nickel-iron-chromium alloys. Products supplied by EV Group China undergo mandatory annealing and cold-working, ensuring stable performance in aggressive corrosive environments and under critical temperature exposure. The standard covers three key alloy grades: UNS N08120, UNS N08800, and UNS N08810.
The engineering choice of material depends on the operating temperature regime of the equipment:
- UNS N08800: Optimal for piping systems operating under thermal loads up to 1100 °F (593 °C).
- UNS N08120 and UNS N08810: Specialized alloys designed for operation at temperatures above 1100 °F. Due to cold-working, these grades demonstrate superior creep resistance and stress-rupture strength.
EV Group China ensures the supply of tubes whose geometric parameters (outside diameter and nominal wall thickness) comply with the ANSI B36.19 standard. We are also prepared to manufacture and supply non-standard tube sizes, provided that all other requirements of the ASTM B514 specification are strictly met.
The document uses inch-pound units as the primary system. SI values are provided for reference purposes. Industrial safety issues regarding the operation of products are governed by the current Material Safety Data Sheets (MSDS) provided by the EV Group China technical department.
Technical notes:
- Alloys classified according to ASTM E527 and SAE J1086 (Unified Numbering System for metals, UNS) meet the requirements of ASME SB-514 for boiler equipment and pressure vessels (Section II of the ASME standard).