S312 plate (UNS S31200) with high chromium (24-26%), moderate nickel (5.5-6.5%) and molybdenum (1.2-2.0%), it offers excellent corrosion resistance, high-temperature stability and mechanical strength-making stainless steel 321 plate ideal for chemical equipment.
Key Properties of S312 Plate
Corrosion Resistance
High chromium forms a dense passive film, resisting oxidizing media, acids, alkalis and chloride ions. With a PREN value of 33, it resists pitting/crevice corrosion, outperforming ordinary stainless steel and reducing corrosion-related equipment failures.
High Temperature Stability
S312 plate maintains stability at up to 450°C (corrosion resistance) and 1100°C (mechanical stability), suitable for high-temperature chemical processes (distillation, pyrolysis). It has good thermal shock resistance for frequent temperature changes.
Mechanical Strength
Annealed S312 plate has tensile strength 780 MPa, yield strength 510 MPa and elongation 28%, higher than ordinary stainless steel. It offers good toughness and wear resistance, ideal for high-pressure vessels, pipelines and structural parts.
Processability
It can be cut, bent, welded (TIG, plasma) and formed easily. Welded joints retain high strength and corrosion resistance, reducing manufacturing difficulty and shortening production cycles.
Applications of S312 Plate in Chemical Industry
Chemical Reaction Equipment
Ideal for reaction vessels, reactors and towers, withstanding high temperature, pressure and corrosive media (sulfuric acid, nitric acid). Suitable for ethylene cracking furnaces and high-temperature reaction equipment.
Chemical Storage Equipment
Used for storage tanks/containers, resisting corrosive liquids (acids, alkalis) and gases (chlorine, hydrogen sulfide). Also suitable for seawater heat exchangers.
Chemical Pipeline System
Manufactures pipelines, elbows and flanges for corrosive media, high-temperature steam and high-pressure gas. Meets ASME SA 312 standards, reducing maintenance and ensuring smooth operation.
Environmental Protection Equipment
Used in wastewater treatment tanks, waste gas absorption towers and filters, resisting high-concentration wastewater and harmful gases, extending equipment life and meeting emission standards.
Special Chemical Equipment
Suitable for fine chemical, pharmaceutical and petrochemical fields, manufacturing precision instruments and catalyst carriers, meeting strict production requirements.
Advantages of Our S312 Plate
Strict Quality Control
Produced to ASTM, EN, UNS S31200 standards, with strict inspection (chemical composition, mechanical performance, corrosion resistance). Product quality is traceable.
Customizable Specifications
We offer S312 plate in 2-12mm thickness (custom widths/lengths) and customized processing (cutting, bending, welding), avoiding material waste and reducing costs.
Cost-Effective Solution
More affordable than 904L/AL-6XN, with longer service life and lower maintenance costs. It balances performance and cost, outperforming 316L.
Perfect After-Sales Service
Professional technical guidance (installation, welding, maintenance) and fast logistics ensure stable product use and on-schedule production.
Contact Us for Quotation
Looking for high-quality astm a240 gr S312 plate? Contact us for detailed parameters, quotations and customized solutions. We provide quality products and services to make your chemical production efficient, safe and economical. We look forward to cooperating with you!
