Features of SA387Gr11CL2: Seamless sheets of SA387Gr11CL2

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SA387Gr11CL2 is a chromium-molybdenum alloy steel plate according to American standards; it is a heat-resistant alloy steel plate used for pressure vessels, also known as P11. It is primarily used in the manufacturing of pressure vessels and in the processing of pipe fittings. I. Chemical composition of SA387Gr11CL2: C: 0.05–0.17; Mn: 0.40–0.65; P: 0.035; S: 0.035; Si: 0.50–0.80; Cr: 1.00–1.50; Mo: 0.45–0.65.
II. Mechanical properties of SA387Gr11CL2: Tensile strength σb (MPa): ≥440(45); Yield strength σs (MPa): ≥295(30); Elongation δ5 (%): ≥22; Reduction of area ψ (%): ≥60; Impact energy Akv (J): ≥94; Impact toughness value αkv (J/cm2): ≥118(12); Hardness: ≤179HB. Sample size: The size of the raw sample is 30 mm. Heat treatment specifications and microstructure: Heat treatment specifications: Quenching at 900°C, air cooling; Tempering at 650°C, air cooling. III. SA387Gr11CL2 corresponds to the national standard 14Cr1MoR. IV. The delivery condition of SA387Gr11CL2 is normalizing + tempering. SA387Gr11CL2 is a type of steel plate used for boilers and containers, and it is employed for manufacturing cylinder shells and end caps (including the base layer of composite steel plates). Reference standard: SA387/SA387M. V. SMELTING METHOD FOR SA387Gr11CL2: An electric furnace plus secondary refining is used, along with vacuum degassing; secondary electroslag remelting is also possible. The steel plate shall be essentially fine-grained normalized steel. VI. Properties of SA387Gr11CL2: SA387Gr11CL2 is a chromium-molybdenum alloy steel plate according to American standards, and it is also classified as a container plate under those standards. It possesses resistance to hydrogen embrittlement, hydrogen corrosion, hydrogen exfoliation, and sulfide corrosion in hydrogen-rich environments at medium temperatures (350 ~ 480 °C). Additionally, it has good resistance to low-temperature embrittlement. It is widely used in the manufacturing of equipment for the fertilizer, petrochemical, and thermal power industries, such as ammonia synthesis reactors, gasification furnaces, shift reactors, and hydrogenation reactors. SA387Gr11CL2 is available in stock; it is also available in cut-to-size forms with dimensions of 152*0375*0895. SA387Gr11CL2 material is suitable for use in hydrogenation reactions at high temperatures, as well as in refining and gas treatment processes. The maximum thickness of this steel plate can reach 250 mm. Depending on the required thickness and impact properties, the heat treatment for SA387Gr11CL2 steel plates consists of normalizing followed by tempering, or normalizing followed by rapid cooling and then tempering. VII. Applications of SA387Gr11CL2: SA387Gr11CL2 belongs to the 1.25Cr-0.5Mo series of pearlitic heat-resistant steels. It exhibits good high-temperature strength, oxidation resistance, and resistance to sulfide corrosion at temperatures below 500°C. It is widely used in high-temperature and high-pressure vessels and equipment in the coal chemical and petrochemical industries, for components such as cylinders, heads, and coke towers (including the base layer of composite steel plates). VIII. SA387 series grades: SA387Gr5Cl2, SA387Gr11Cl2, SA387Gr12Cl2, SA387Gr22Cl2, SA387Gr91