1,We Manufacturing processes are primarily classified into four types:
1:Forging,
2:Casting,
3:Cutting,
4:Rolling.
2,We can manufacture in accordance with these standards.
Standards:
GB Series (Chinese Standards), JB Series (Machinery Standards), HG Series (Chemical Industry Standards), ASME B16.5 (American Standards), BS4504 (British Standards), DIN (German Standards), and JIS (Japanese Standards).
Internationally, there are two primary systems of pipe flange standards: the European system, represented by the German DIN standards (including those of the former Soviet Union), and the American system, represented by the US ANSI pipe flange standards. Other common standards include: the Chinese Ministry of Machinery Industry standards (JB series), the Ministry of Chemical Industry standards (HG series), the Chinese National Standard *GB/T 9112–9124-2010 Steel Pipe Flanges*, as well as US standards (ASME B16.5), British standards (BS4504), German standards (DIN), Japanese standards (JIS), and marine standards (CBM), among others.
The nominal pressure ratings for the PN series are designated by "PN" and comprise the following nine levels: PN2.5, PN6, PN10, PN16, PN25, PN40, PN63, PN100, and PN160.
The nominal pressure ratings for the Class series are designated by "Class" and comprise the following six levels: Class150, Class300, Class600, Class900, Class1500, and Class2500.
Flange Classification
1. **According to Chemical Industry Standards:** Flanges are classified as follows:
Plate Flat Welding Flange (PL), Necked Flat Welding Flange (SO), Necked Butt Welding Flange (WN), Integral Flange (IF), Socket Welding Flange (SW), Threaded Flange (Th), Butt Welding Ring Loose Flange (PJ/SE), Blind Flange (BL), Flat Welding Ring Loose Flange (PJ/PJ), and Lined Blind Flange (BL(s)).
2. **According to Petrochemical (SH) Industry Standards:** Flanges are classified as follows:
Threaded Flange (PL), Butt Welding Flange (WN), Flat Welding Flange (SO), Socket Welding Flange (SW), Loose Flange (LJ), and Blind Flange (no specific designation).
3. **According to Machinery (JB) Industry Standards:** Flanges are classified as follows:
Integral Flange, Butt Welding Flange, Plate Flat Welding Flange, Butt Welding Ring Plate Loose Flange, Flat Welding Ring Plate Loose Flange, Lap Joint Ring Plate Loose Flange, and Blind Flange.
4. **According to Connection Method/Type:** Flanges are classified as follows:
Plate Flat Welding Flange, Necked Flat Welding Flange, Necked Butt Welding Flange, Socket Welding Flange, Threaded Flange, Blind Flange, Necked Butt Welding Ring Loose Flange, Flat Welding Ring Loose Flange, Ring-Type Joint (RTJ) Flange and Blind Flange, Large-Diameter Plate Flange, Large-Diameter High-Neck Flange, Figure-8 Blind Plate, Butt Welding Ring Loose Flange, etc.
5. **According to the Component Being Connected:** Flanges can be classified into Vessel Flanges and Pipe Flanges.
6. **According to Structural Type:** Flanges include Integral Flanges, Threaded Flanges, Flat Welding Flanges, Butt Welding Flanges, Lap Joint (Loose/Swivel) Flanges, and Blind Flanges.
A flange—also referred to as a flange plate or rim—is a component used to connect shafts to one another, or, more commonly, to join the ends of pipes. Flanges are also utilized at the inlet and outlet ports of equipment to facilitate connections between two devices—for instance, the flange on a speed reducer. A "flange connection" or "flanged joint" refers to a detachable joint assembly comprising three interconnected elements—a flange, a gasket, and bolts—that together form a sealed structural unit. In the context of piping systems, a "pipe flange" specifically denotes a flange used for plumbing within the installation; when applied to equipment, it refers to the inlet or outlet flange of that specific device. Flanges feature a series of holes through which bolts are inserted to securely fasten the two flanges together, while a gasket placed between the flanges ensures a leak-proof seal. Flanges are broadly categorized into three types: threaded (screw-in) flanges, welded flanges, and clamp-type flanges. Flanges are invariably used in pairs; threaded flanges are suitable for low-pressure piping applications, whereas welded flanges are required for systems operating at pressures exceeding 4 kilograms per square centimeter. A sealing gasket is inserted between the two flange plates, which are then firmly secured using bolts. The thickness of a flange—as well as the specifications of the bolts used to fasten it—vary depending on the specific pressure rating required for the application. When connecting equipment such as water pumps or valves to piping systems, the corresponding connection points on these devices are often manufactured in the shape of a matching flange; this method of attachment is also referred to as a "flange connection." Generally, any connecting component that utilizes bolts to join and seal the perimeters of two flat surfaces—such as the joints in ventilation ducts—is termed a "flange"; such components may collectively be classified as "flange-type parts." However, since such a connection often constitutes merely a *portion* of a larger device—for instance, the interface between a flange and a water pump—it would be inappropriate to classify the entire water pump itself as a "flange-type part." Conversely, smaller components—such as valves—that feature such flanged interfaces may indeed be appropriately categorized as "flange-type parts."
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InduSteel Flange SUPERELSO® 500 Quenched and Tempered High Strength Steel Flange for Pressure Equipment Product Information
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InduSteel Flange SUPERELSO® 500 Quenched and Tempered High Strength Steel Flange for Pressure Equipment Synonyms
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Industeel SUPERELSO® 500 Quenched and Tempered High Strength Steel for Pressure Equipment Product Information
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# **Product Datasheet: Industeel SUPERELSO® 500 Quenched & Tempered High-Strength Steel for Pressure Equipment**
## **1. Product Overview**
**SUPERELSO® 500** is a premium **high-strength, low-alloy (HSLA) steel plate** specifically engineered by Industeel (ArcelorMittal) for **pressure equipment applications** requiring **optimal strength-to-weight ratio, superior toughness, and excellent weldability**. The "500" designation indicates a **minimum yield strength of 500 MPa**, while "SUPERELSO" represents the advanced quenched and tempered (Q&T) product line designed for demanding structural and containment applications. This steel is meticulously manufactured to meet the stringent quality requirements of pressure vessel and structural codes, offering designers a reliable material solution for lightweight, high-pressure, and low-temperature equipment where safety and reliability are paramount.
## **2. International Standards & Designations**
| System/Authority | Designation | Specification Title / Application Standard |
| :--- | :--- | :--- |
| **Manufacturer** | **Industeel SUPERELSO® 500** | Proprietary brand name, trademark of ArcelorMittal |
| **European Pressure Equipment** | **EN 10028-6:2017** | Flat products made of steels for pressure purposes - Part 6: Weldable fine grain steels, quenched and tempered |
| **Grade per EN 10028-6** | **P500Q / P500QL / P500QL1** | Standard designations for pressure vessel quality (Q-Quenched, L-Low temp impact, L1-Enhanced low temp) |
| **ASME Boiler & Pressure Vessel** | **SA-517 / SA-832** (Grade equivalent) | Pressure vessel plates, alloy steel, high-strength, quenched and tempered |
| **ISO** | **ISO 9328-4:2023** | Flat products for pressure purposes - Part 4: Weldable fine grain steels, normalized or quenched and tempered |
| **Common Names** | P500QL1 Steel, 500 MPa Q&T Pressure Vessel Steel, High-Strength PVEQ Plate |
## **3. Chemical Composition (% by Weight)**
The chemistry is a carefully balanced, fine-grained microalloyed steel optimized for high strength, exceptional toughness, and pressure vessel weldability.
| Element | Typical SUPERELSO® 500 Range (EN 10028-6 P500QL1 Ref.) | Key Metallurgical Function for Pressure Equipment |
| :--- | :--- | :--- |
| **Carbon (C)** | **≤ 0.18** (Often 0.10-0.16) | Kept low to maximize weldability, minimize HAZ hardness, and ensure good toughness. Critical for avoiding cold cracking. |
| **Manganese (Mn)** | **≤ 1.70** | Primary solid solution strengthener and austenite stabilizer. Enhances strength and hardenability. |
| **Phosphorus (P)** | **≤ 0.020** | Ultra-low to prevent temper embrittlement and ensure long-term integrity. |
| **Sulfur (S)** | **≤ 0.008** | Ultra-low for improved through-thickness properties (Z-quality) and weld metal soundness. |
| **Silicon (Si)** | **≤ 0.50** | Deoxidizer and solid solution strengthener. |
| **Chromium (Cr)** | **≤ 0.80** | Enhances hardenability and provides moderate corrosion resistance. |
| **Nickel (Ni)** | **≤ 1.00** | **Crucial for toughness:** Significantly lowers the ductile-to-brittle transition temperature, essential for low-temperature service. |
| **Molybdenum (Mo)** | **≤ 0.70** | Enhances hardenability, improves strength at elevated tempering temperatures, and benefits high-temperature properties. |
| **Vanadium (V)** | **≤ 0.10** | Precipitation strengthening; contributes to grain refinement. |
| **Niobium (Nb)** | **≤ 0.05** | **Key grain refiner:** Forms fine Nb(C,N) precipitates during TMCP, creating an ultra-fine grain structure for superior toughness and strength. |
| **Boron (B)** | **≤ 0.005** (Trace) | Powerful hardenability enhancer, allowing leaner alloy design. |
| **Copper (Cu)** | **≤ 0.30** | Residual; can be specified for improved atmospheric corrosion resistance (weathering). |
| **Iron (Fe)** | Balance | Matrix. |
**Manufacturing & Quality Emphasis:** Produced via **Electric Arc Furnace → Ladle Metallurgy (Degassing) → Continuous Casting → Thermomechanical Controlled Processing (TMCP) or Direct Quenching from rolling heat → Tempering**. The process is tightly controlled to ensure an **ultra-fine, homogeneous tempered bainitic/martensitic microstructure**, essential for pressure integrity. Steel cleanness is paramount, with stringent inclusion control.
## **4. Mechanical & Physical Properties**
Properties are guaranteed for the as-supplied, quenched and tempered condition, meeting pressure vessel code requirements.
| Property | Standard Requirement / Typical Value (EN 10028-6 P500QL1) | Test Standard | Importance for Pressure Equipment |
| :--- | :--- | :--- | :--- |
| **Yield Strength (Rp0.2 / ReH)** | **500 - 650 MPa** (Min. 500 MPa) | EN ISO 6892-1 | Primary design property; enables thinner walls, weight reduction. |
| **Tensile Strength (Rm)** | **610 - 770 MPa** | EN ISO 6892-1 | Defines ultimate load capacity. |
| **Yield-to-Tensile Ratio** | **≤ 0.92** (Typically 0.82-0.88) | -- | Ensures sufficient plastic deformation before failure (safety margin). |
| **Elongation (A₅)** | **≥ 16%** (Longitudinal) | EN ISO 6892-1 | Indicates ductility for stress redistribution and safety. |
| **Impact Toughness (Charpy V-notch)** | **≥ 60 J at -40°C** (Longitudinal)
**≥ 40 J at -40°C** (Transverse) | EN ISO 148-1 | **Critical for PVEQ:** Guarantees fracture resistance at low operating temperatures. |
| **Bend Test** | Bend to 180° over mandrel **t ≤ 3.0 * t** | EN ISO 7438 | Verifies formability for head and shell fabrication. |
| **Hardness** | Typically **180 - 240 HBW** | EN ISO 6506-1 | Controlled to ensure weldability and machinability. |
| **Through-Thickness (Z) Property** | **Z25 or Z35** available (≥ 25% or 35% RA) | EN 10164 | Prevents lamellar tearing in thick, highly restrained welds (e.g., nozzle attachments). |
**Additional Pressure Equipment Properties:**
* **NDT Requirements:** Typically supplied with **ultrasonic testing** per EN 10160 or SEP 1921, achieving **Class E/e** or better.
* **Heat Treatment:** Full traceability of austenitizing, quenching, and tempering cycles.
* **Weldability:** **Excellent.** Preheating often not required for moderate thicknesses due to low **PCM (≈0.20-0.25%)**.
## **5. Key Characteristics & Advantages**
* **Code Compliance & Safety:** Manufactured and certified specifically for pressure equipment under **EN 10028-6 (PED)** and suitable for **ASME Section VIII** applications, ensuring regulatory acceptance.
* **Excellent Low-Temperature Toughness:** The "QL1" grade guarantees high impact energy down to **-40°C (-40°F)**, making it ideal for refrigeration, LNG, and cold climate service.
* **Superior Weldability:** Low carbon equivalent allows welding with common processes (SAW, SMAW, GMAW) with minimal or no preheat, reducing fabrication cost and complexity.
* **Weight Reduction Potential:** Enables **~30% weight saving** compared to standard P355 pressure vessel steels, leading to lower material, fabrication, and transportation costs.
* **High Dimensional Stability:** Advanced Q&T process minimizes residual stresses and distortion.
* **Good Formability:** Can be cold formed (rolling, dishing) for shells and heads within specified limits.
* **Consistent High Quality:** Stringent process controls ensure batch-to-batch uniformity critical for pressure vessel fabrication.
## **6. Primary Applications**
SUPERELSO® 500 is specified for high-performance pressure equipment across multiple industries.
* **Gas Storage & Transport:** **CNG/H2 vehicle fuel tanks, gas transport tubes, high-pressure accumulators.**
* **Energy & Process:**
* **Heat exchangers** and **pressure vessels** for chemical and petrochemical plants.
* **Separators, scrubbers, and reactors** where weight savings are beneficial.
* **Penstocks and hydraulic accumulators** for power generation.
* **Refrigeration & Cryogenics:** **Pressure vessels and heat exchangers** for industrial refrigeration, CO₂ systems, and **LNG intermediate storage**.
* **Mobile Equipment:** **Hydraulic cylinders, air receivers, and pressure tanks** for construction and mining machinery.
* **Offshore:** **Process modules, utility systems,** and other weight-sensitive pressure equipment on platforms and vessels.
## **7. Fabrication for Pressure Equipment**
* **Cutting:** **Plasma, laser, or waterjet cutting** preferred. Oxy-fuel requires procedure qualification.
* **Forming:**
* **Cold forming** (rolling, dishing) is standard. No post-forming heat treatment required if deformation is within code limits (typically ≤5% fiber elongation).
* **Hot forming** must be followed by re-austenitizing, quenching, and tempering to restore properties.
* **Welding (Key Advantage):**
* **Filler Metals:** Use matching or slightly undermatching consumables with high toughness (e.g., EN ISO 16834-A: G 50 6 M21 Mn2Ni1CrMo).
* **Preheat:** Often not required for t < 25mm. For thicker sections, mild preheat (80-120°C) may be used.
* **PWHT:** May be required by design code depending on thickness and service conditions. If applied, temperature must be **below the original tempering temperature**.
* **Post-Weld Heat Treatment (PWHT):** Standard procedures apply. Must be carefully controlled to avoid temper embrittlement or over-softening.
## **8. Comparison with Standard Pressure Vessel Steels**
| Parameter | **SUPERELSO® 500 (P500QL1)** | P355GH (Normalized) | P460NH (Normalized) |
| :--- | :--- | :--- | :--- |
| **Min. Yield Strength** | **500 MPa** | 355 MPa | 460 MPa |
| **Typical Weight Saving** | **~30%** (vs. P355) | Baseline | ~15% (vs. P355) |
| **Impact @ -40°C** | **≥ 60 J** | Not standard | ≥ 40 J (NL) |
| **Primary Process** | **Quenched & Tempered** | Normalized | Normalized |
| **Weldability** | **Excellent** | Excellent | Good |
| **Optimal For** | **High-pressure, lightweight, low-temp vessels** | General purpose vessels | General purpose, higher strength |
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**Disclaimer:** This datasheet provides information on **Industeel SUPERELSO® 500** steel for pressure equipment. **SUPERELSO® is a registered trademark of ArcelorMittal.** This material is intended for **code-regulated pressure equipment** and must be designed, fabricated, and inspected in full compliance with applicable pressure equipment directives (**PED 2014/68/EU**, **ASME Boiler & Pressure Vessel Code**) and associated construction codes (e.g., **EN 13445**, **ASME Section VIII Div. 1 or 2**). All welding procedures must be qualified according to the governing code. Consultation with the material manufacturer and a certified pressure equipment engineer is essential for successful application.
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Industeel SUPERELSO® 500 Quenched and Tempered High Strength Steel for Pressure Equipment Specification
Dimensions
Size：
Diameter 20-1000 mm Length <6434 mm
Size:We can customized as required
Standard：
Per your request or drawing
We can customized as required
Properties（Theoretical）
Chemical Composition
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Industeel SUPERELSO® 500 Quenched and Tempered High Strength Steel for Pressure Equipment Properties
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Applications of InduSteel Flange SUPERELSO® 500 Quenched and Tempered High Strength Steel Flange for Pressure Equipment
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Chemical Identifiers InduSteel Flange SUPERELSO® 500 Quenched and Tempered High Strength Steel Flange for Pressure Equipment
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Packing of InduSteel Flange SUPERELSO® 500 Quenched and Tempered High Strength Steel Flange for Pressure Equipment
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Standard Packing:
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Typical bulk packaging includes palletized plastic 5 gallon/25 kg. pails, fiber and Steel Flange 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 2905 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
