EN SPHL275 High Manganese Pressure Vessel Carbon Steel

EN SPHL275 High Manganese Pressure Vessel Carbon Steel Product Information -:- For detailed product information, please contact sales. -: EN SPHL275 High Manganese Pressure Vessel Carbon Steel Synonyms -:- For detailed product information, please contact sales. -:

EN SPHL275 High Manganese Pressure Vessel Carbon Steel Product Information -:- For detailed product information, please contact sales. -: # **Product Name:** EN P275 Pressure Vessel Steel Plate, Low-Temperature Grade **Overview** EN SPHL275 is a **low-temperature, non-alloy, fine-grained carbon-manganese steel for pressure purposes**. This grade is specifically designed for welded pressure equipment that operates at low service temperatures. The "SPHL" prefix is a **non-standard but industry-recognized designation** (likely from specific national or mill standards historically) that logically corresponds to **P275NL** in the modern EN system. The "L" indicates its primary characteristic: **suitability for low-temperature service**, with guaranteed impact toughness at **-50°C**. It is used for the construction of pressure vessels and storage tanks in cold climates or for cryogenic services down to approximately -50°C. It is **not a "High Manganese" steel**; its performance is defined by fine grain practice and impact toughness, not elevated manganese. **Key International Standards & Clarification** * **Primary Standard:** **EN 10028-4:2017** - Flat products made of steels for pressure purposes - Part 4: Nickel alloy steels with specified low temperature properties. *However, P275NL is a non-alloy steel, so its more direct home is as a sub-grade under EN 10028-2, though it may be cross-referenced.* * The correct modern EN designation is **P275NL**. * **Designation Decoding (P275NL):** * **P:** Steel for pressure purposes. * **275:** Minimum specified yield strength (ReH) in MPa at room temperature. * **N:** Delivery condition is **Normalized** (mandatory for low-temperature grades). * **L:** Indicates suitability for **Low temperature** service. * **Interpretation of "SPHL275":** This is a common legacy/project designation. "SPH" stands for **Steel Plate, High quality** (or similar), and "L" for **Low temperature**. It is functionally equivalent to **P275NL**. * **Clarification on "High Manganese":** This is a **misleading and incorrect term**. The manganese content is standard for this strength class. The steel's premium is its **guaranteed low-temperature toughness**, achieved through normalizing, fine grain practice, and controlled chemistry, not through high manganese. **Chemical Composition (Ladle Analysis, % by weight, typical for low-temperature pressure vessel steel)** Tightly controlled for low-temperature toughness and weldability. * **Carbon (C):** ≤ **0.16%** (Low for good toughness and weldability). * **Manganese (Mn):** ≤ **1.50%** (Standard, not elevated). * **Phosphorus (P):** ≤ **0.020%** (Very low for improved toughness). * **Sulphur (S):** ≤ **0.010%** (Very low for improved through-thickness properties). * **Silicon (Si):** **0.10 - 0.35%** * **Aluminum (Alt):** ≥ **0.020%** (Mandatory for fine grain practice). * **Nitrogen (N):** ≤ **0.012%** * **Carbon Equivalent (CEV):** Typically low (≤ 0.38%), favorable for welding. **Physical & Mechanical Properties (for normalized condition, thickness ≤ 16mm)** * **Yield Strength (ReH) at 20°C:** ≥ **275 MPa** * **Tensile Strength (Rm):** **410 - 560 MPa** * **Elongation (A):** ≥ **24%** * **Impact Energy (KV):** **≥ 27 J at -50°C** (Minimum requirement for subgrade "L"). This is the **defining property**. * **Delivery Condition:** **Normalized (N)**. This is mandatory to achieve the required fine-grained, homogeneous microstructure. * **Ultrasonic Testing (UT):** Mandatory for plates per **EN 10160** to ensure internal soundness. **Product Features** 1. **Guaranteed Low-Temperature Toughness:** The core feature. Certified impact resistance at **-50°C** makes it suitable for pressure equipment with a low Minimum Design Metal Temperature (MDMT). 2. **Pressure Purpose & Fine Grain:** Manufactured to stringent pressure vessel standards with mandatory fine grain practice for enhanced toughness. 3. **Good Weldability:** The normalized condition and controlled chemistry facilitate welding, though procedures must still be qualified, especially for thick sections. 4. **Normalized Homogeneity:** Provides uniform properties and relieves stresses, offering predictable fabrication behavior. **Typical Applications** * **Low-Temperature & Cryogenic Storage Tanks:** For liquefied gases such as **LNG (down to -162°C requires different grades), liquid CO2, liquid ammonia, and LPG/propane** where design temperatures are in the range of -20°C to -50°C. * **Process Vessels in Cold Climates:** Pressure equipment for chemical and petrochemical plants located in arctic or severely cold winter regions. * **Transportation Pressure Vessels:** For gases stored at moderate pressures and low temperatures. **Available Forms & Quality Supplements** * **Forms:** Normalized plates. * **Delivery Condition:** **Normalized (N)**. Thermomechanical rolling is not typical for this low-temperature application. * **Mandatory Certification:** Supplied with a full **Inspection Certificate 3.1 per EN 10204**, including impact test results at the specified low temperature (e.g., -50°C). --- **Critical Procurement Note** 1. **Use Modern Standard Designation:** For clarity and compliance, specify **EN 10028 P275NL**. "SPHL275" should be cross-referenced to this in documentation. 2. **Define Design Temperature:** The order must specify the **Minimum Design Metal Temperature (MDMT)** to ensure the supplied material's impact tests are conducted at or below this temperature. -50°C is the standard "L" grade test temperature. 3. **Regulatory Compliance:** Material must comply with pressure equipment directives (e.g., PED) and be CE marked where applicable. 4. **Not "High Manganese":** Discontinue use of this term. The accurate description is **"Normalized Fine-Grain Pressure Vessel Steel for Low-Temperature Service (P275NL)."** 5. **Thickness Consideration:** Mechanical properties, especially yield strength, are thickness-dependent. Confirm values for the ordered thickness. -:- For detailed product information, please contact sales. -: EN SPHL275 High Manganese Pressure Vessel Carbon Steel Specification Dimensions Size： Diameter 20-1000 mm Length <5844 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. -: EN SPHL275 High Manganese Pressure Vessel Carbon Steel Properties -:- For detailed product information, please contact sales. -:

Applications of EN SPHL275 High Manganese Pressure Vessel Carbon Steel -:- For detailed product information, please contact sales. -: Chemical Identifiers EN SPHL275 High Manganese Pressure Vessel Carbon Steel -:- For detailed product information, please contact sales. -:

Packing of EN SPHL275 High Manganese Pressure Vessel Carbon Steel -:- 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 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 2315 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