Stainless steel 347H Plate Manufacturer, Supplier. Contact us to get free quote and sample!
S347H austenitic stabilized stainless steel plate has become a partner for safety, efficiency and long-term reliability with its excellent anti-sensitization, anti-creep and long-term strength. HT PIPE is a leading stockist and global exporter with over 15 years of expertise in international trade. We supply pipes, S347h stainless steel plates, round bars, and a comprehensive range of pipe fittings, flanges, and valves. Contact us now for free quotes and personalized product information.
Corrosion Resistance of stainless steel 347H plate
sa 347 stainless steel anti-sensitization and intergranular corrosion performance
During welding or high-temperature use, carbon is easily combined with chromium and precipitated at the grain boundary to form a chromium-poor area, causing corrosion. The niobium element's affinity with carbon far exceeds that of chromium, and it preferentially forms stable niobium carbide (NbC), effectively "locking" carbon atoms and preventing chromium carbide from precipitating, thereby protecting the uniform distribution of chromium elements and maintaining strong corrosion resistance.
ss347h high-temperature strength and creep resistance
Under continuous high temperature, the metal will undergo slow plastic deformation (creep). S347H has significantly better high-temperature strength (such as creep rupture strength) than 304H/316H through optimized composition and heat treatment. It can withstand high stress for a long time without excessive deformation or fracture, ensuring the structural integrity of the equipment.
aisi 347 stainless steel oxidation resistance and carburization resistance
In high-temperature air or carbon-containing atmosphere, it can form a stable and dense chromium oxide protective layer to resist oxidation peeling and harmful carbon element penetration.
S347H's value
- Maximize equipment life and reliability: Effectively resist high-temperature corrosion and creep failure, significantly extend the overhaul cycle and overall service life of key equipment, and reduce the huge losses caused by unplanned downtime.
- Ensure production safety: In high-temperature, high-pressure, flammable and explosive petrochemical and energy environments, material failure may lead to catastrophic consequences. The high reliability of S347H is the cornerstone of safe factory operation.
- Improve production efficiency: Higher allowable operating temperature and pressure help optimize process flow, improve energy efficiency and production capacity.
- Lower Life Cycle Cost (LCC): Although the initial material cost may be higher than ordinary stainless steel, its excellent durability and low maintenance requirements often bring better long-term economic benefits.
Application of ss347h plate
- Chemical and petrochemical: core reactors, towers, heat exchangers, piping systems (especially for handling sulfuric acid, hydrochloric acid, phosphoric acid, acetic acid, chlorine-containing organic matter), agitator shafts, valve bodies.
- Flue gas desulfurization (FGD): absorption tower shell, spray layer, demister, flue lining, slurry circulation pipeline.
- Oil and gas: high sulfur and high chlorine oil and gas extraction (downhole tools, valves), natural gas processing (acid gas scrubbers), oil refining (corrosion-resistant components of atmospheric and vacuum decompression, catalytic cracking and other devices).
- Pharmaceutical and fine chemicals: reactors, storage tanks, and piping systems that require extremely high purity and resistance to harsh cleaning agents (such as CIP/SIP systems), strong acid and alkali media.
- Pulp and papermaking: scrubbers, storage tanks, and pipelines in the bleaching section (chlorine, chlorine dioxide, and peroxide environments).
- Pollution control and waste treatment: incinerator components (flue gas treatment section), wastewater treatment (media containing heavy metals, chelating agents, and strong oxidizing/reducing agents).
- Nuclear power: key corrosion-resistant components in nuclear fuel reprocessing and radioactive waste treatment facilities.
- Marine engineering: high-pressure and high-temperature components in seawater cooling systems and seawater desalination devices to resist seawater corrosion and biological fouling.
