Duplex Stainless Steel
Double phase stainless steel is a kind of steel that combines excellent corrosion resistance, high strength and easy manufacturing and processing. Its physical properties are between austenitic stainless steel and ferritic stainless steel, but closer to ferritic stainless steel and carbon steel.
The chloride pitting and crevice corrosion resistance of double phase stainless steel is a function of chromium, molybdenum, tungsten, and nitrogen content and can be similar to 316 stainless steels or higher than seawater stainless steels such as 6% Mo austenitic stainless steels.
We have a full range of alloys, plates, steel strips, round bars, seamless pipes, welding products, wire rods, forgings and welding components, customized profiles, plate shapes, and machined parts to ensure they meet the requirements of your critical projects.
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| GB1220-2007 | (GB1220-92) | ASTM | UNS | SAE | (DIN) | EN10088:1/EN10095 | (JIS) | (NF) | (BS) | (ISO) | (SS14) | (TOCT) | |
| 06Cr26Ni4Mo2 | 0Cr26Ni5Mo2 | S22693 | 329 | S32900 | — | X8CrNiMo275 | SUS329J1 | — | — | — | 2324 | 08X21H6M2T | |
| 14Cr18Ni11Si4AlTi | 1Cr18Ni11Si4AlTi | — | — | — | — | — | — | — | — | — | 15X18H12C4TЮ | ||
| 12Cr21Ni5Ti | 1Cr21Ni5Ti | — | — | — | — | — | — | — | — | — | 12X21H5T | ||
| 022Cr19Ni5Mo3Si2N | 00Cr18Ni5Mo3Si2 | S21953 | 3RE60 | S31500 | — | 1.4417 | — | DP11 | — | — | — | SS2376 | — |
| 022Cr22Ni5Mo3N | 00Cr22Ni5Mo3N | S22253 | F51 | S31803 | 1.4462 | X2CrNiMoN22-5-3 | SUS329J3L/DP8 | UR45N | SS2377 | ||||
| 022Cr23Ni5Mo3N | S22053 | F60 | S32205 | 2205 | |||||||||
| 022Cr25Ni7Mo4N | 00Cr25Ni7Mo4N | S25073 | F53 | S32750 | 2507 | 1.4410* | X2CrNiMoN25-7-4 | UR47N+ | SS2328 | ||||
| 03Cr25Ni6Mo3Cu2N | S25554 | F61 | S32550 | 255 | 1.4507 | X2CrNiMoCuN25-6-3 | SUS329J4L/DP8 | UR52N+ | SS2328 | ||||
| 022Cr25Ni7Mo4CuWN | 00Cr25Ni7Mo4CuWN | S27063 | F55 | S32760 | 1.4501 | X2CrNiMoWN25-7-4 | |||||||
| 022Cr23Ni4MoCuN | 00Ci23Ni4N | S23043 | S32304 | 2304 | 1.4362 | X2CrNiMoN23-4 | DP11 | UR35N | |||||
| 022Cr25Ni6Mo2N | S22553 | S31200 | 1.4460* | X3CrNiMoN27-5-2 | |||||||||
| 00Cr24Ni6Mo3N | — | — | — | — | — | — | — | — | — | — |
| Material | Known As | Material Specification | Stock Form | (Min.–Max. mm) |
|---|---|---|---|---|
| S31803(F51)/S32205(F60) | SUS329J3L | ASTM A182/A276/A479 ASME SA182/SA276/SA479 NACE MR0175 EN 1.4462 NORSOK M630 D47 |
Peeled round bars | φ10-350 |
| Hex bars | H13-55 | |||
| Nuts and washers | M8-M24 | |||
| SUS329J4L | S31260 | JIS G4303 | Peeled round bars | φ6-250 |
| Hex bars | H13-36 | |||
| Hex bolts | M16-24 | |||
| Nuts and washers | M5～M24 | |||
| S32750(F53) | SAF2507 | ASTM A182/A276/A479 ASME SA182/SA276/SA479 NACE MR0175 EN 1.4410 NORSOK M630 D57 |
Peeled round bars | φ10-300 |
| S32760(F55) | ZERON100 | ASTM A182/A276/A479 ASME SA182/SA276/SA479 NACE MR0175 EN 1.4501 NORSOK M630 D57 |
Peeled round bars | φ12.7-250 |
Double phase stainless steel are twice as strong as conventional austenitic stainless steels and have better corrosion resistance. Due to these advantages, it has recently been considered for use in the oil and gas industry as a material for gas (dry and wet carbon dioxide gas, acid gas) oil pipelines. It can also be used in chemical, electric power and other industries to manufacture seamless steel pipes, generally used as heat exchangers, transporting hot brine, and transporting cooling water containing chlorides of various organic and inorganic chemicals. In addition, dual-phase steels are often used in petroleum refining heat exchangers.
The most typical is used to prevent the occurrence of stress corrosion cracking and localized corrosion caused by chlorides containing conveying steam, cooling water or deposits, with good corrosion resistance to compounds such as hydrogen sulfide, sulfuric acid, naphthenic acid , amines and ammonium sulfate, can also be used in environments where corrosion is caused by these compounds. Double phase stainless steel is also used in the case of corrosion during processing. Many factories are more corrosive than actual processing when dealing with cooling water containing chlorides. In this case, duplex stainless steel can fully play its advantages.
We also provide forging blanks and CNC precision machining services for our clients, covering industries such as energy, petrochemicals, steel, engineering machinery, plastics, prevention and control, hydraulics, healthcare, and food. Please feel free to send us drawings for inquiries.
Metalworking Services
CNC Machining
Sheet Metal Fabrication
Metal Welding
Metal Cutting
Metal Bending
Metal Punching
Metal Forging
Metal Sheet Rolling
Tube and Plate Drilling
Heavy Forging Press Capacity
Our heavy-duty forging presses support open-die forging and deformation of large-section forgings, including discs, shafts, blocks, and custom components. This capability enables us to meet the demanding forming requirements of heavy industrial applications.
Heat Treatment Capability
Heat treatment is a critical step in achieving the mechanical properties required for heavy-duty forgings. Our process capabilities meet the strength, toughness, and structural stability requirements for forged components used under demanding operating conditions.
Heavy Shaft Machining
We offer machining capabilities for large forged shafts and long cylindrical components, supporting both rough and finish machining. This capacity is suitable for stepped shafts, rotor shafts, rollers, and other heavy-duty forged shaft components.
Ring Forging Machining
Our machining facilities are capable of handling large ring-shaped forgings and circular parts that require precise turning, face machining, boring, and contour control. This capability is suitable for industrial ring blanks, heavy-duty circular parts, and machined ring forgings.
Cylindrical Forging Machining
We offer machining solutions for heavy-duty cylindrical, hollow, and tubular forgings. This capability supports the machining of sleeves, cylinders, and other thick-walled forged components used in pressure vessels, rotating systems, and general industrial applications.
Inspection & Testing
Quality control is integrated into our production process through the inspection and testing of forged and machined parts. Our capabilities help verify the dimensional accuracy, condition, and quality consistency of industrial forgings prior to delivery.
Packing & Delivery
Finished forgings are properly protected and packaged to minimize the risk of damage during storage and transportation. Our packaging methods ensure the safe domestic delivery and export shipment of machined and high-value forged components.
