Spherical ASTM A213 T12 Alloy Steel Powder, Chromium Molybdenum

ASTM A213 T12 Alloy Steel Spherical Powder, Chromium Molybdenum Product Information -:- For detailed product information, please contact sales. -: ASTM A213 T12 Alloy Steel Spherical Powder, Chromium Molybdenum Synonyms -:- For detailed product information, please contact sales. -: -:- For detailed product information, please contact sales. -: Spherical ASTM A213 T12 Alloy Steel Powder, Chromium Molybdenum characteristics -:- For detailed product information, please contact sales. -: Spherical ASTM A213 T12 Alloy Steel Powder, Chromium Molybdenum 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 T12 Alloy Steel Powder, Chromium Molybdenum 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 T12 Alloy Steel Powder, Chromium Molybdenum Chemical Composition -:- For detailed product information, please contact sales. -: -:- For detailed product information, please contact sales. -: ASTM A213 T12 Alloy Steel, Chromium Molybdenum Product Information -:- For detailed product information, please contact sales. -: # **Product Introduction: ASTM A213 T12 Alloy Steel (Chromium-Molybdenum)** ASTM A213 T12 is a standardized, seamless ferritic alloy steel tube grade engineered for elevated-temperature service in boilers, superheaters, and heat exchangers. As part of the chromium-molybdenum (Cr-Mo) steel family, T12 offers a **distinct balance of higher chromium content and controlled carbon**, positioning it between the lower-alloy T2/T11 grades and the higher-chromium T22 grade. This composition is specifically designed to provide **improved oxidation resistance and microstructural stability at higher temperatures** compared to T2, while maintaining good fabricability and weldability. The primary role of A213 T12 is to safely contain steam, water, or process fluids in high-pressure, high-temperature environments, typically up to **565°C (1050°F)**. Its enhanced chromium content (nominally 1%) provides better resistance to steam-side oxidation and certain corrosive atmospheres, making it suitable for sections of boilers and superheaters where temperature and oxidation are more severe. T12 is a critical material in conventional fossil fuel power plants and various industrial heating applications, serving as a reliable and cost-effective solution for moderately aggressive high-temperature service. --- ## **1. Chemical Composition (Weight %)** T12 features a balanced increase in chromium and a specific carbon range compared to T2. | **Element** | **Carbon (C)** | **Manganese (Mn)** | **Phosphorus (P)** | **Sulfur (S)** | **Silicon (Si)** | **Chromium (Cr)** | **Molybdenum (Mo)** | | :--- | :--- | :--- | :--- | :--- | :--- | :--- | :--- | | **Content** | 0.05 - 0.15 | 0.30 - 0.61 | ≤ 0.025 | ≤ 0.025 | ≤ 0.50 | 0.80 - 1.25 | 0.44 - 0.65 | | **Role** | Provides strength. The lower max. carbon (vs. T2) improves weldability and reduces susceptibility to martensite formation in weld HAZ. | Contributes to strength and aids in deoxidation. | Impurity, kept very low. | Impurity, kept very low. | Deoxidizer; enhances oxidation resistance. | **Key Differentiator.** Increased to ~1% to significantly improve **oxidation and scaling resistance** at high temperatures compared to T2. | Provides solid solution strengthening and dramatically improves **creep strength** at elevated temperatures. | *Note: Iron (Fe) constitutes the remainder. The nominal 1% Cr - 0.5% Mo balance is the hallmark of the T12 grade.* --- ## **2. Physical & Mechanical Properties** *Designed for elevated temperature service, with minimum room temperature properties defined by the standard.* * **Density:** ~7.87 g/cm³ * **Modulus of Elasticity:** ~200-205 GPa * **Thermal Conductivity:** ~40-45 W/m·K at 100°C. * **Coefficient of Thermal Expansion:** ~12 x 10⁻⁶/°C (20-100°C) * **Room Temperature Mechanical Properties (Min., per ASTM A213):** * **Tensile Strength:** 415 MPa (60,000 psi) * **Yield Strength:** 220 MPa (32,000 psi) * **Elongation:** 30% (min. in 50 mm) * **Elevated Temperature Performance:** * **Creep & Rupture Strength:** **Good to Very Good.** The molybdenum content provides solid creep resistance at temperatures up to ~565°C (1050°F). * **Oxidation Resistance:** **Improved over T2.** The ~1% chromium content offers markedly better resistance to steam-side scaling and oxidation in flue gas atmospheres, extending component life. * **Microstructural Stability:** **Good.** The alloy balance resists excessive spheroidization and graphitization within its design temperature range. --- ## **3. Heat Treatment & Fabrication** T12 tubes are supplied in a heat-treated condition suitable for high-temperature service. * **Typical Mill Heat Treatment:** **Full Annealing, Normalizing, or Normalizing & Tempering.** This ensures a uniform, stable microstructure with optimal ductility and toughness for service. * **Post-Weld Heat Treatment (PWHT):** **Mandatory.** Required after welding to: 1. Relieve high residual stresses. 2. Temper any hard martensitic areas in the Heat-Affected Zone (HAZ). 3. Restore corrosion resistance. * **Typical PWHT Range:** **650-730°C (1200-1350°F)**. Holding time depends on thickness. * **Weldability:** **Good.** Requires careful procedure due to air-hardening tendency. Pre-heat (~200-250°C / 400-480°F) and interpass temperature control are essential. Common filler metals: AWS E80xx-B2 (e.g., E8018-B2) for SMAW, ER80S-B2 for GTAW/GMAW. * **Forming:** Can be cold bent with subsequent stress relief, or hot formed. --- ## **4. Key Applications** ASTM A213 T12 is widely used in high-temperature pressure tubing applications where oxidation resistance is a key concern. * **Boiler Tubes:** For waterwalls, screens, and generating sections in industrial and utility boilers, especially in areas of higher heat flux. * **Superheater & Reheater Tubes:** Primary and secondary superheater sections where metal temperatures are higher. * **Heat Exchanger Tubes:** In process industries (refineries, chemical plants) for heaters, reformers, and waste heat boilers. * **High-Temperature Piping:** For steam and process lines within its temperature-pressure envelope. --- ## **5. International Standards & Cross-References** ASTM A213 T12 is part of a global family of 1% Cr - 0.5% Mo steels. * **ASTM:** **A213/A213M - Grade T12** * **ASME:** **SA-213 T12** (Accepted for ASME Boiler & Pressure Vessel Code, Section I & VIII). * **EN (European):** **EN 10216-2 - 13CrMo4-5** is the closest direct equivalent (1% Cr, 0.5% Mo). * **DIN (German):** **13CrMo4-5**. * **JIS (Japanese):** **STBA 13** (for boiler tubes) or **STPA 13** (for piping). * **ISO:** **ISO 9329-2: P12** (similar composition). * **UNS:** **K11562** * **Common Name:** **1.25Cr-0.5Mo Steel**. --- ## **6. Advantages & Limitations** **Advantages:** * **Improved Oxidation Resistance:** The ~1% Cr content provides a clear advantage over T2/T11 in high-temperature oxidizing environments, reducing scale formation and metal loss. * **Good Elevated Temperature Strength:** Reliable creep performance within its design range. * **Cost-Effective for its Capability:** Offers a significant step up in oxidation resistance without the cost of higher alloy steels like T22 (2.25Cr-1Mo). * **Well-Understood Material:** Extensive service history and established fabrication codes. **Limitations:** * **Lower High-Temperature Strength than Advanced Grades:** Outperformed by grades like T22, T91, and T92 at temperatures above ~565°C. * **Air-Hardening Tendency:** Requires strict adherence to welding procedures (pre-heat, PWHT) to avoid cracking. * **Limited to Moderate Temperatures:** Not suitable for advanced ultra-supercritical (USC) power plants. * **Not a Stainless Steel:** Will corrode in aggressive reducing or acidic environments. --- ## **7. Summary** **ASTM A213 T12 is a strategically important alloy steel that bridges the performance gap between basic Cr-Mo steels and higher-chromium alloys.** By incorporating approximately 1% chromium, it effectively addresses the steam-side oxidation that can limit the life of lower-alloy tubing in hotter sections of boilers and superheaters. For engineers designing systems operating in the 500-565°C (930-1050°F) range, T12 provides an optimal balance of improved environmental resistance, adequate strength, fabricability, and cost. It remains a staple material in the power generation and process industries, representing a mature and reliable engineering solution for dependable high-temperature pressure containment. -:- For detailed product information, please contact sales. -: ASTM A213 T12 Alloy Steel, Chromium Molybdenum Specification Dimensions Size： Diameter 20-1000 mm Length <7007 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 T12 Alloy Steel, Chromium Molybdenum Properties -:- For detailed product information, please contact sales. -:

Spherical ASTM A213 T12 Alloy Steel Powder, Chromium Molybdenum Particle Size Description -:- For detailed product information, please contact sales. -: Applications of Spherical ASTM A213 T12 Alloy Steel Powder, Chromium Molybdenum -:- For detailed product information, please contact sales. -: -:- For detailed product information, please contact sales. -: Applications of ASTM A213 T12 Alloy Steel Spherical Powder, Chromium Molybdenum -:- For detailed product information, please contact sales. -: Chemical Identifiers ASTM A213 T12 Alloy Steel Spherical Powder, Chromium Molybdenum -:- For detailed product information, please contact sales. -:

Packing of ASTM A213 T12 Alloy Steel Spherical Powder, Chromium Molybdenum -:- 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 3478 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