STAINLESS STEEL
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Best Practices When Using Specialty Materials for SWRO Feed and Brine Reject Lines
In our webinar we 8217 ll explore the fascinating journey of stainless steels in SWRO Seawater Reverse Osmosis applications <
2024 Trade Shows
Come talk to a Rolled Alloys representative in person about your project You can find us at these trade shows
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 8220 dual certification 8221 is primarily employed when certifying a material as meeting the specifications for two separate
304/304H
Dual certified 304/304H is used as a material of construction up to 1500°F. Slight scaling begins at about 1200°F. This is the 0.04% minimum carbon version of type 304 stainless. It has general corrosion resistance similar to the low carbon 304/304L. However, it is subject to carbide precipitation in the heat affected zone (HAZ) of welds. Weldments may be sensitive to HAZ intergranular corrosion in oxidizing acid environments, and to polythionic acid stress corrosion cracking. The carbide precipitation is not harmful to high temperature mechanical properties.
304/304H is welded using the 22Cr 11Ni filler wire (ER308), or covered electrodes (E308). Post-weld heat treatment is not necessary for most high temperature service.
- Elevated temperature service to 1500°F
- Corrosion resistance similar to 304/304L
UNS: S30400, S30409
W. NR.: 1.4948
ASTM: A 240, A 959
ASME: SA 240
AMS: 5513
- Pressure Vessels
- Petrochemical Equipment
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