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2024 Trade Shows
Come talk to a Rolled Alloys representative in person about your project. You can find us at these trade shows.
Best Practices When Using Specialty Materials for SWRO Feed and Brine Reject Lines
In our webinar, we’ll explore the fascinating journey of stainless steels in SWRO (Seawater Reverse Osmosis) applications.
Los Angeles Operations Tour
Welcome to Rolled Alloys, Los Angeles, where our General Manager, Carol Plana, with nearly two decades of experience, leads an
Dual Certification
The term “dual certification” is primarily employed when certifying a material as meeting the specifications for two separate alloys.
800H/AT
800H/AT (Incoloy® 800) is an austenitic heat resistant alloy designed for high temperature structural applications. The strength of 800H/AT is achieved by controlled levels of carbon, aluminum and titanium along with a 2100°F minimum anneal to achieve a grain size of ASTM 5 or coarser.
800H/AT is commonly welded using RA82 (ERNiCr-3) bare wire for applications under 1450°F. RA330-04 (N08334) bare wire offers a closer match of thermal expansion coefficient, and somewhat higher strength. For maximum strength alloy 617 (ERNiCrCoMo-1) bare wire or 117 (ENiCrCoMo-1) covered electrodes are suggested. To avoid possible stress relaxation grain boundary cracking of N08811 in applications above 1000°F the welded fabrication may be heated 1650°F for about one hour per inch of thickness or 30 minutes minimum then air cooled.
- High design stresses for ASME Section VIII applications to 1650°F
- Useful oxidation resistance through 1800°F
- Resistant to chloride ion stress corrosion cracking
UNS: N08810, N08811
W. NR.: 1.4958, 1.4959
ASTM: B 407, B 408, B 409
ASME: SB 407 CODE CASE 1325, SB 408, SB 409
- Nitric acid catalyst supports
- Reformer outlet pigtails and manifolds
- Heat exchangers
- Pressure vessels
- Dampers
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