Super Duplex Steel UNS S32950 Tubes Manufacturer and Supplier in Thailand
Super Duplex Steel S32950 Seamless Tubes is hollow cylindrical components made from a high-alloy stainless steel with a mixed microstructure of austenite and ferrite. Thaida Stainless Steel Manufacturing (Thailand) Co., Ltd., located in Chon Buri, is a leading company specializing in Super Duplex Steel DIN 1.4417 seamless tubes. These super duplex steel tubes offer exceptional corrosion resistance, especially in chloride-rich environments, along with superior mechanical properties such as high tensile strength, yield strength, and impact toughness. Available in custom shapes and sizes with strict quality certifications, they are widely used in offshore platforms, heat exchangers, desalination plants, and chemical processing units. We offer customized solutions according to the customer’s needs.
Product Overview: Super Duplex UNS S32950 Seamless Tubes
Key Characteristics of UNS S32950 Seamless Tubes
High Strength
UNS S32950 tubes offer exceptional tensile and yield strength, making them suitable for high-pressure and high-load environments.
Microstructure
Featuring a balanced two-phase microstructure of austenite and ferrite, these tubes provide improved mechanical properties and enhanced resistance to stress corrosion cracking.
Excellent Corrosion Resistance
With outstanding resistance to pitting, crevice corrosion, and chloride-induced corrosion, these tubes are perfect for aggressive marine and chemical environments.
Good Weldability
The tubes exhibit good weldability with minimal risk of hot cracking, allowing for easy fabrication and reliable joints without compromising strength or corrosion resistance.
Thermal Stability
Super Duplex UNS S32950 seamless tubes maintain their mechanical strength and corrosion resistance even when exposed to elevated temperatures up to 250°C.
Fatigue and Erosion Resistance
These tubes perform exceptionally well under cyclic loading and abrasive conditions, offering long service life even in harsh industrial operations.
Why Choose Our ASTM A789 UNS S32950 Seamless Tubes
Competitive Pricing
Global Exports Expertise
Large Inventory & Fast Dispatch
Custom Sizes & Finishes
Industry Certifications & Compliance
Advanced Production Technology
After-Sales Support, Service- Technical Support
In-House Testing & Full Traceability
UNS S32950 Super Duplex Steel Seamless Tubes Specification
Below is the detailed specification for super duplex steel UNS S32950 seamless tubes, which outlines key aspects such as size range, manufacturing process, surface finish, certifications, and various applications. These specifications ensure the product meets the highest industry standards.
| Standard | ASTM A789, ASME SA789 |
|---|---|
| Size | 1/2″ NB to 12″ NB IN |
| Schedule | SCH20, SCH30, SCH40, STD, SCH80, SCH160, SCHXXS |
| Type | Seamless |
| Form | Round, Hydraulic, Square, Rectangular, etc. |
| Length | Single Random, Double Random, Cut Length |
| End | Plain End, Beveled End, Threaded |
Equivalent Grades of S32950 Seamless Tubes
The equivalent table for super duplex DIN 1.4417 seamless tubes outlines global standards, grade names, and UNS designations.
| Standard | Equivalent Grade |
|---|---|
| UNS | S32950 |
| Werkstoff Nr. | 1.4460 |
| EN | X3CrNiMoN27-5-2 |
| AFNOR | Z3CND27-5AZ |
| BS | — |
| JIS | — |
| GOST | — |
Chemical Composition of UNS S32950 Seamless Tubes
The DIN 1.4417 seamless tubes chemical composition table highlights essential elements such as chromium, nickel, carbon, and manganese levels.
| Element | Minimum (%) | Maximum (%) |
|---|---|---|
| Carbon (C) | — | 0.03 |
| Manganese (Mn) | — | 1.5 |
| Silicon (Si) | — | 1.0 |
| Phosphorus (P) | — | 0.035 |
| Sulfur (S) | — | 0.015 |
| Chromium (Cr) | 24.0 | 27.0 |
| Nickel (Ni) | 4.5 | 6.5 |
| Molybdenum (Mo) | 1.0 | 2.0 |
| Nitrogen (N) | 0.10 | 0.30 |
| Iron (Fe) | Balance | — |
Mechanical Properties of S32950 Super Duplex Stainless Steel Seamless Tubes
The mechanical properties of S32950 super duplex stainless steel tubes such as tensile strength, yield strength, and impact toughness are mentioned below.
| Property | Value |
|---|---|
| Ultimate Tensile Strength | 730 – 930 MPa (106 – 135 ksi) |
| 0.2% Proof Strength | ≥ 530 MPa (≥ 77 ksi) |
| Elongation | ≥ 25% |
| Hardness (Max) | 290 HB |
| Impact Strength | ≥ 100 J (≥ 74 ft.lb) |
Super Duplex Steel UNS S32950 Seamless Tubes Manufacturing Process
1. Raw Material Selection
High-quality super duplex steel billets and strips are carefully selected for superior strength and corrosion resistance.
2. Tubes Formation
The selected raw material is formed into tubes using seamless extrusion methods, depending on the application.
3. Heat Treatment
Tubes undergo required controlled heat treatment to enhance mechanical properties and relieve internal stresses.
4. Cold Working and Finishing
After heat treatment, tubes are cold-worked for better surface finish, dimensional accuracy and improved strength.
5. Quality Control and Testing
Every tube is thoroughly inspected and tested to ensure it meets international quality standards for performance and reliability.
Applications of Super Duplex Stainless Steel S32950 Seamless Tubes
Oil and Gas Industry
Marine Applications
Chemical Industry
Petrochemical Industry
Power Plants
Aerospace & Defense
Automotive and Transportation
Desalination Plants
Pulp and Paper Industry
FAQ
What is the composition of super duplex S32950?
What is the composition of super duplex S32950?
S32950 contains roughly 28–30% chromium, 7–8% molybdenum, 4–5% nickel, and 0.3% nitrogen. It also has small amounts of manganese, silicon, and iron balance. This mix gives excellent corrosion resistance and high strength.
What industries use UNS S32950 Seamless Tubes?
What industries use UNS S32950 Seamless Tubes?
They are widely used in offshore oil and gas, chemical plants, desalination units, power generation, and marine engineering. Any industry facing aggressive acids, seawater, or high-pressure conditions benefits from these tubes.
What are the disadvantages of super duplex S32950?
What are the disadvantages of super duplex S32950?
It is more expensive than standard duplex or austenitic stainless steel. Welding requires skilled handling, and high-temperature performance is limited compared to some nickel alloys.
Can Thaida supply customized UNS S32950 Tubes?
Can Thaida supply customized UNS S32950 Tubes?
Yes, custom sizes, lengths, and grades are available for special project needs. Tubes can be tailored to match pressure, temperature, and flow requirements.
What are the main advantages of UNS S32950 Seamless Tubes?
What are the main advantages of UNS S32950 Seamless Tubes?
They offer very high corrosion resistance, superior strength, and long service life. They resist pitting, crevice corrosion, and stress cracking, making them reliable in harsh chemical and marine environments.