Spherical ASTM A213 T9 9Cr-1Mo Steel Powder TUBES FOR BOILERS AND HEAT EXCHANGERS (STBA 26)

ASTM A213 T9 9Cr-1Mo Steel Spherical Powder TUBES FOR BOILERS AND HEAT EXCHANGERS (STBA 26) Product Information -:- For detailed product information, please contact sales. -: ASTM A213 T9 9Cr-1Mo Steel Spherical Powder TUBES FOR BOILERS AND HEAT EXCHANGERS (STBA 26) Synonyms -:- For detailed product information, please contact sales. -: -:- For detailed product information, please contact sales. -: Spherical ASTM A213 T9 9Cr-1Mo Steel Powder TUBES FOR BOILERS AND HEAT EXCHANGERS (STBA 26) characteristics -:- For detailed product information, please contact sales. -: Spherical ASTM A213 T9 9Cr-1Mo Steel Powder TUBES FOR BOILERS AND HEAT EXCHANGERS (STBA 26) Particle Size -:- For detailed product information, please contact sales. -: -:- -:- 0-15μm ,5-25μm, 15-45μm, 15-53μm,20-63um, 45-75μm, 45-105μm, 45-150μm ,75-150μm. (Various granularities can be customized according to customer requirements) -:- For detailed product information, please contact sales. -:

Spherical ASTM A213 T9 9Cr-1Mo Steel Powder TUBES FOR BOILERS AND HEAT EXCHANGERS (STBA 26) Applicable processes -:- For detailed product information, please contact sales. -: Laser/electron beam additive manufacturing (SLM/EBM, 3D printing) Direct laser deposition (DLD) Used in thermal spray (TSA) Powder hot isostatic pressing (HIP) Metal injection molding (MIM) Powder metallurgy (PM) Laser cladding (LC), etc. -:- For detailed product information, please contact sales. -: Spherical ASTM A213 T9 9Cr-1Mo Steel Powder TUBES FOR BOILERS AND HEAT EXCHANGERS (STBA 26) Chemical Composition -:- For detailed product information, please contact sales. -: -:- For detailed product information, please contact sales. -: ASTM A213 T9 9Cr-1Mo STEEL TUBES FOR BOILERS AND HEAT EXCHANGERS (STBA 26) Product Information -:- For detailed product information, please contact sales. -: **Product Introduction: ASTM A213 T9 / 9Cr-1Mo Alloy Steel Tubes for Boilers and Heat Exchangers** --- ### **1. Overview** ASTM A213 T9 is a seamless ferritic alloy steel tube designed for superior high-temperature service, particularly in applications involving steam. It belongs to the class of intermediate chromium steels, with a nominal composition of **9% Chromium and 1% Molybdenum**. This composition provides significantly enhanced oxidation resistance and elevated temperature strength compared to lower chromium grades like T11, T22, and even T5 (5Cr-0.5Mo). The designation **STBA 26** is its equivalent material code under the Japanese Industrial Standard (JIS G 3462). T9 tubes are a critical material for components exposed to high-pressure steam and elevated temperatures where resistance to oxidation (scaling) and adequate creep strength are paramount. --- ### **2. International Standards** This material is governed by key international standards for seamless alloy steel tubes and is recognized across major global engineering codes. * **Primary Standard (Tubes):** * **ASTM A213/A213M:** *Standard Specification for Seamless Ferritic and Austenitic Alloy-Steel Boiler, Superheater, and Heat-Exchanger Tubes.* This is the core specification. * **Key International & Industry Equivalents:** * **ASME SA-213:** The ASME Boiler and Pressure Vessel Code (BPVC) version, mandatory for code-compliant construction. * **JIS G 3462 STBA 26:** The direct Japanese equivalent specification for steel tubes for boilers and heat exchangers. * **EN 10216-2 X11CrMo9-1 / 1.7386:** The European standard (EN) designation for a comparable 9Cr-1Mo steel tube. * **DIN 17175 X11CrMo9-1:** The corresponding German standard. * **Related Product Standards:** For piping systems, the equivalent seamless pipe is specified under **ASTM A335 P9** / **ASME SA-335 P9**. --- ### **3. Chemical Composition (Weight %, per ASTM A213 T9)** The chemistry is optimized for high-temperature oxidation resistance and strength. | Element | Composition (%) | Role & Benefit | | :--- | :--- | :--- | | **Carbon (C)** | 0.15 max | Provides strength; kept low to maintain weldability and ductility. | | **Manganese (Mn)**| 0.30 – 0.60 | Enhances strength and hardenability. | | **Phosphorus (P)**| ≤ 0.025 | Impurity, controlled for toughness. | | **Sulfur (S)** | ≤ 0.025 | Impurity, controlled for weldability and formability. | | **Silicon (Si)** | 0.25 – 1.00 | Important for oxidation resistance; forms a stable, protective silicate scale. | | **Chromium (Cr)** | 8.00 – 10.00 | **Primary alloy.** Provides **exceptional oxidation and sulfidation resistance** at high temperatures, significantly superior to 2-3% Cr steels. | | **Molybdenum (Mo)**| 0.90 – 1.10 | **Key alloy.** Enhances high-temperature strength, creep resistance, and provides carbide stability. | --- ### **4. Typical Physical & Mechanical Properties** *(For material in the normalized and tempered or full annealed condition)* * **Tensile Strength:** ≥ 415 MPa (60,000 psi) * **Yield Strength (0.2% Offset):** ≥ 205 MPa (30,000 psi) * **Elongation (% in 50mm / 2in):** ≥ 30% (min) * **Hardness:** Typically ≤ 179 HB (Brinell) * **Density:** ~ 7.70 g/cm³ * **Melting Point:** ~ 1427 - 1510 °C (2600 - 2750 °F) * **Thermal Conductivity:** ~ 26 W/m·K (at 100°C) – *Lower than low-alloy steels due to higher chromium content.* * **Coefficient of Thermal Expansion:** ~ 11.5 x 10⁻⁶ /K (20-100°C) * **Maximum Recommended Service Temperature:** Offers excellent oxidation resistance up to approximately **650°C (1200°F)** and useful creep strength up to about **600°C (1112°F)**. It bridges the gap between low-alloy ferritic steels and austenitic stainless steels. --- ### **5. Product Application** ASTM A213 T9 / STBA 26 tubes are specified for high-heat sections of thermal systems where oxidation is a primary concern. * **Power Generation Boilers:** * **Superheater and Reheater Tubes:** Particularly in final stages where steam temperatures are highest. * **High-Temperature Boiler Tubes:** In sections prone to severe scaling with lower alloy steels. * **Petrochemical & Refining:** * **Heater Tubes & Coils** in process furnaces where the atmosphere is oxidizing or sulfidizing. * **Heat Exchanger Tubing** for high-temperature gas or fluid services. * **Industrial Boilers & Heat Recovery Steam Generators (HRSG):** For high-temperature sections. * **General High-Temperature Service:** Where oxidation resistance is more critical than maximum creep strength. --- ### **6. Key Features & Advantages** * **Superior Oxidation Resistance:** The ~9% chromium content provides a stable, self-healing chromium oxide (Cr₂O₃) scale, offering much better protection against scaling in steam and flue gas environments than low-chromium steels. * **Good Elevated Temperature Strength:** Offers better creep strength than low-alloy steels up to about 600°C, making it suitable for many high-pressure steam applications. * **Economic Alternative to Austenitics:** Provides a cost-effective solution for applications where Type 300 series austenitic stainless steels (e.g., 304H, 321H) would be over-specified for corrosion resistance but where low-alloy steels would fail prematurely due to oxidation. * **Thermal Fatigue Resistance:** Its lower thermal expansion coefficient compared to austenitic stainless steels can be beneficial in components subjected to thermal cycling. * **Fabrication Considerations:** Requires controlled welding procedures (typically with matching or over-matching filler metals like ER90S-B9), pre-heat, and mandatory post-weld heat treatment (PWHT) to restore microstructure and properties in the heat-affected zone. --- **In summary, ASTM A213 T9 (9Cr-1Mo / STBA 26) is a strategically important alloy steel tube that fills a critical performance gap between low-alloy ferritic steels and austenitic stainless steels. Its primary value lies in its exceptional resistance to high-temperature oxidation, making it the material of choice for superheater and reheater tubes in power plants and high-temperature heat exchangers where long-term scaling resistance dictates service life.** -:- For detailed product information, please contact sales. -: ASTM A213 T9 9Cr-1Mo STEEL TUBES FOR BOILERS AND HEAT EXCHANGERS (STBA 26) Specification Dimensions Size： Diameter 20-1000 mm Length <7014 mm Size:We can customized as required Standard： Per your request or drawing We can customized as required Properties（Theoretical） Chemical Composition -:- For detailed product information, please contact sales. -: ASTM A213 T9 9Cr-1Mo STEEL TUBES FOR BOILERS AND HEAT EXCHANGERS (STBA 26) Properties -:- For detailed product information, please contact sales. -:

Spherical ASTM A213 T9 9Cr-1Mo Steel Powder TUBES FOR BOILERS AND HEAT EXCHANGERS (STBA 26) Particle Size Description -:- For detailed product information, please contact sales. -: Applications of Spherical ASTM A213 T9 9Cr-1Mo Steel Powder TUBES FOR BOILERS AND HEAT EXCHANGERS (STBA 26) -:- For detailed product information, please contact sales. -: -:- For detailed product information, please contact sales. -: Applications of ASTM A213 T9 9Cr-1Mo Steel Spherical Powder TUBES FOR BOILERS AND HEAT EXCHANGERS (STBA 26) -:- For detailed product information, please contact sales. -: Chemical Identifiers ASTM A213 T9 9Cr-1Mo Steel Spherical Powder TUBES FOR BOILERS AND HEAT EXCHANGERS (STBA 26) -:- For detailed product information, please contact sales. -:

Packing of ASTM A213 T9 9Cr-1Mo Steel Spherical Powder TUBES FOR BOILERS AND HEAT EXCHANGERS (STBA 26) -:- For detailed product information, please contact sales. -: Standard Packing: -:- For detailed product information, please contact sales. -: Typical bulk packaging includes palletized plastic 5 gallon/25 kg. pails, fiber and Steel Spherical Powder drums to 1 ton super sacks in full container (FCL) or truck load (T/L) quantities. Research and sample quantities and hygroscopic, oxidizing or other air sensitive materials may be packaged under argon or vacuum. Solutions are packaged in polypropylene, plastic or glass jars up to palletized 3485 gallon liquid totes Special package is available on request. E FORUs’ is carefully handled to minimize damage during storage and transportation and to preserve the quality of our products in their original condition