Duplex stainless steel has developed to the third generation since its birth in the United States in the 1940s. Its main feature is that the yield strength can reach 400-550MPa, which is twice that of ordinary stainless steel, so it can save materials and reduce equipment manufacturing costs. In terms of corrosion resistance, especially under the conditions of harsh media environment (such as sea water, high chloride ion content), the pitting corrosion, crevice corrosion, stress corrosion and corrosion fatigue resistance of duplex stainless steel are significantly better than ordinary austenite Stainless steel is comparable to high-alloy austenitic stainless steel.
Duplex stainless steel has good welding performance. Compared with ferritic stainless steel and austenitic stainless steel, it is not like the welding heat-affected zone of ferritic stainless steel. Due to the severe coarsening of crystal grains, the plastic toughness is greatly reduced. Unlike austenitic stainless steel, it is more sensitive to welding hot cracks.
Item | Stainless Steel Duplex sheet (Hot rolled, Cold rolled) |
Thickness | 0.3~10.0mm |
Width | 1000mm, 1219mm, 1500mm, 1800mm, 2000mm, 2500mm, 3000mm, 3500mm, etc |
Length | 2000mm, 2440mm, 3000mm, 5800mm, 6000mm, etc |
Standard | JIS, AISI, ASTM, GB, DIN, EN, etc |
Surface | 2B, 2D, BA, NO.1, NO.4, NO.8, 8K, mirror, checkered, embossed, hair line, sand blast, Brush, etching, etc |
Package | Shrink-wrapped, Carton boxes, Wooden pallets, Wooden boxes, Wooden crates Etc. |
Edge | Mill Edge Slit Edge |
Export to | India, Indonesia, Malaysia, Singapore, Saudi Arabia, Qatar, UAE, Iran, Iraq, Oman, South Africa, Nigeria, Kenya, Italy, UK, Brazil, Russia, Egypt, Kuwait, Taiwan, Australia. |
Chemical Components | Specification | Key Features | Typical Application | ||
element | Minimum percentage | Maximum percentage | ASTM A240 ISO 15156-3 (NACE MR0175) BS EN 10088-3 | The corrosion resistance at higher temperatures is better than that of 316 stainless steel. | Chemical processing. spring. fastener. Threaded insert. Metal mesh |
C | – | 0.08 | |||
Si | – | 1 | |||
Mn | – | 2 | |||
P | – | 0.045 | |||
S | – | 0.03 | |||
Cr | 16.5 | 18.5 | |||
Mo | 2 | 2.5 | |||
Ni | 10.5 | 13.5 | |||
Ti | 5 x C | 0.7 | |||
Fe | bal | ||||
Density | 7.9 g/cm³ | 0.285 lb/in³ | |||
Melting point | 1375°C | 2500°F | |||
Coefficient of expansion | 16.5 μm/m °C (21 – 100°C) | 9.110 x 10-6 in/in °F (70 – 212°F) | |||
Rigid modulus | 74 kN/mm² | 10730 ksi | |||
Modulus of elasticity | 193 kN/mm² | 27990 ksi |
(1) Flame cutting: The cost of flame cutting equipment is low and it is the only economical and effective means to cut thick metal plates, but it has its shortcomings in thin plate cutting.
(2) Laser cutting:Laser cutting equipment can cut stainless steel plates below 30mm. Adding oxygen to the laser beam can cut 40mm thick carbon steel, but after oxygen cutting, a thin oxide film will be formed on the cutting surface.
(3) Wire cutting: It is developed on the basis of EDM perforation and forming. It has not only developed the application of EDM but also replaced EDM perforation and forming in some aspects.
(4) Shearing cutting:Uses a moving upper blade and a fixed lower blade and uses a reasonable blade gap to apply shearing force to metal plates of various thicknesses so that the plates can be broken and separated according to the required size. Shearing machine is a kind of forging machinery, and its main function is the metal processing industry.
(5) Plasma cutting:It is a processing method that uses the heat of a high-temperature plasma arc to partially or partially melt (and evaporate) the metal at the incision of the workpiece and uses the momentum of the high-speed plasma to remove the molten metal to form an incision.
(6) Slitting: Also known as slitting, refers to the process of uncoiling, slitting, leveling, and winding of stainless steel coils into coils of the required width.
application | Used in papermaking, petrochemical, shipbuilding, nuclear power, pressure vessels, desalination, water pumps, transportation, machinery manufacturing, environmental protection, containers and other industries |
Feature | Variety of varieties, complete specifications, superior performance, wide range of uses, and has obtained various related industry certifications |
performance | High strength, yield strength twice that of 18-8 stainless steel, good pitting corrosion resistance and chloride stress corrosion resistance, low welding hot cracking tendency, high thermal conductivity, low linear expansion coefficient, good for work hardening, high Energy absorption, good impact resistance |
Market dynamics | With the rapid development of my country's economy, the corrosion resistance and strength requirements of materials are getting higher and higher, and with the large fluctuations in the cost of raw materials, the development of energy-saving materials is more and more favored by users. Dual-phase steel has both of the above advantages. , It is more and more widely used in all walks of life, and the market prospect is broad. |
Duplex Stainless Steel Sheet Cutting
Duplex Stainless Steel Sheet Slitting
Duplex Stainless Steel Sheet Color coating
Duplex Stainless Steel Sheet Hairline/Brush
Duplex Stainless Steel Sheet Etching
Duplex Stainless Steel Sheet Welding
Duplex Stainless Steel Sheet Bending
Duplex Stainless Steel Sheet Embossing
Duplex Stainless Steel Sheet Bead Blasted
Duplex Stainless Steel Sheet Polishing
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SS Duplex Perforated sheet | A 240 Duplex sheet | SS DIN 1.4571 sheet |
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