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EN 1.4418 (04Cr16Ni5Mo) Stainless Steel Round Bar – High Toughness Martensitic Bar for Oil, Gas & Hydropower Industries

  • EN 1.4418 (04Cr16Ni5Mo) Stainless Steel Round Bar – High Toughness Martensitic Bar for Oil, Gas & Hydropower Industries
  • EN 1.4418 (04Cr16Ni5Mo) Stainless Steel Round Bar – High Toughness Martensitic Bar for Oil, Gas & Hydropower Industries
  • EN 1.4418 (04Cr16Ni5Mo) Stainless Steel Round Bar – High Toughness Martensitic Bar for Oil, Gas & Hydropower Industries
  • EN 1.4418 (04Cr16Ni5Mo) Stainless Steel Round Bar – High Toughness Martensitic Bar for Oil, Gas & Hydropower Industries
  • EN 1.4418 (04Cr16Ni5Mo) Stainless Steel Round Bar – High Toughness Martensitic Bar for Oil, Gas & Hydropower Industries
Место происхождения Китай
Фирменное наименование Delta
Сертификация ISO 9001
Номер модели 1.4418
Количество мин заказа 500 кг
Цена 3.5 - 5.5 USD/Kg
Упаковывая детали деревянная коробка или водонепроницаемая бумажная оболочка
Время доставки 5 - 10 дней
Условия оплаты Т/Т, Вестерн Юнион
Поставка способности 50 тонн в месяц

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Подробная информация о продукте
Название продукта 1.4418 Стержень из нержавеющей стали Диаметр 10 - 350mm
Длина 6 м или разрезание любой длины в качестве запроса Поверхность черный или полированный
Услуга Резка Стандартный Astm din gb en
Другие продукты круглый бар, квадратный бар, плоский бар.etc Техника Горячекатаный
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Характер продукции

EN 1.4418 (04Cr16Ni5Mo) Stainless Steel Round Bar – High Toughness Martensitic Bar for Oil, Gas & Hydropower Industries

Products Specification

Products Name 1.4418 Stainless Steel Round Bar
Grade

303,303Cu,304,304L,309S,310S,310H,316L,316Ti,316H,317L,321,329,347,410,415,420,

430F,431,440A/B/C,2205,2507,904l,254SMO,253MA,CD4MCU,XM-19,17-4PH,15-5PH,17-7PH,660,C276,600,601,625,718,800,800H,825,926.etc
Products Diameter Range φ3mm - φ350mm
Length 6m/pcs or cutting any length as request
Surface Pickling finishing, bright finishing
Standard ASTM  JIS,GB,DIN EN
Service Cutting
Other Shape Square , Flat, Hexagonal, Round.etc
Loading Port Shanghai Port
MOQ 50 kgs

 

 

EN 1.4418 (04Cr16Ni5Mo) Stainless Steel Round Bar – High Toughness Martensitic Bar for Oil, Gas & Hydropower Industries​
EN 1.4418 (also known as X4CrNiMo16-5-1 and domestic grade 04Cr16Ni5Mo) is a premium low-carbon martensitic stainless steel round bar engineered to deliver an exceptional balance of high strength, superior toughness, and outstanding corrosion resistance. Designed specifically for the rigorous demands of oil, gas, and hydropower industries, this alloy outperforms conventional martensitic stainless steels through its optimized chemical composition and tempered martensitic microstructure. Its unique properties make it a reliable choice for critical components operating in harsh, corrosive, and high-load environments, ensuring long-term durability and reduced maintenance costs.​
Core Chemical Composition​
 
 
The exceptional performance of EN 1.4418 stems from its precisely balanced chemical composition, which combines low carbon content with chromium, nickel, and molybdenum to enhance strength, toughness, and corrosion resistance. The following table outlines the chemical composition ranges (mass fraction) in compliance with EN 10088-2:2005 standard:​
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Silicon (Si)​
≤0.70%​
Assists in deoxidation and improves high-temperature oxidation resistance.​
Phosphorus (P)​
≤0.040%​
Strictly controlled to avoid cold brittleness and processing cracks.​
Sulfur (S)​
≤0.015%​
Low sulfur content guarantees material toughness and surface finish during processing.​
Nitrogen (N)​
≥0.02%​
Enhances structural stability and supplementary corrosion resistance.​
 
 
 
 
 
 
 
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Key Mechanical Properties​
 
EN 1.4418 round bar exhibits excellent comprehensive mechanical properties after quenching and tempering (QT) treatment, particularly in QT900 state. It maintains high strength while delivering superior toughness even at low temperatures, making it suitable for heavy-load and dynamic stress applications. The following mechanical properties are achieved in the tempered state:​
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Property​
Value Range​
Test Condition​
Tensile Strength (Rm)​
900-1100 MPa​
QT900 State​
Yield Strength (Re)​
≥550 MPa​
QT900 State​
Elongation (A)​
≥15%​
Room Temperature​
Impact Toughness (Akv)​
≥50 J​
-40℃ Low Temperature​
Brinell Hardness (HB)​
≤324 HB​
QT900 State​
 
 
 
 
 
 
 
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Notably, its chloride stress corrosion resistance is three times that of 304 stainless steel, with an annual corrosion rate of less than 0.1mm in 10% sulfuric acid. The pitting resistance equivalent (PREN) of approximately 28 further confirms its excellent resistance to pitting and crevice corrosion in chloride-containing environments.​
Heat Treatment & Processing Performance​
 
Heat Treatment Process​
 
The performance of EN 1.4418 is closely linked to proper heat treatment, with quenching and tempering as the core processes to adjust its microstructure and properties:​
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Quenching: Heat to 1020-1100℃, followed by oil cooling or air cooling. This process fully transforms austenite into martensite, laying the foundation for high strength and refining grains.​
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Tempering: Hold at 480-620℃ for 4-6 hours, then cool. This step eliminates quenching residual stress, adjusts the structure to balance strength and toughness, and avoids brittleness caused by prolonged holding around 475℃.​
Processing & Welding​
 
The alloy supports both hot and cold working, though cold working exhibits a high work hardening rate that requires controlled deformation. For machining, cemented carbide tools are recommended, paired with medium-speed cutting and efficient cooling to ensure surface quality. In terms of welding, TIG/MIG processes are preferred, with preheating at 100-250℃ and 1.4430 welding wire. Moderate tempering after welding prevents structural brittleness, eliminating the need for complex post-heating processes.​
Product Specifications & Supply​
 
EN 1.4418 round bars are available in various processing states and sizes to meet diverse industrial needs, with strict compliance with international standards:​
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Processing State​
Diameter Range​
Length​
Standard​
Bright Drawn/Ground​
10mm-80mm​
3m​
DIN EN 10278 (Tolerance H9)​
Hot Rolled/Forged​
25mm-705mm​
4-6m​
DIN EN 10060​
 
 
 
 
 
 
 
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All products are supplied with EN 10204/3.1 certificates, ensuring traceability and compliance with quality requirements. Custom sizes for blocks, flats, and plates (10mm-50mm thickness) are available upon request.​
Applications in Oil, Gas & Hydropower Industries​
 
Thanks to its robust performance, EN 1.4418 round bar is widely adopted in critical components across oil, gas, and hydropower sectors, where reliability and durability are paramount:​
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Oil & Gas Industry: Ideal for subsea valves, connecting flanges, transmission structural parts, and offshore oil platform support structures. It resists corrosion from hydrogen sulfide and chloride-containing media, with a service life exceeding 25 years in marine environments.​
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Hydropower Industry: Used in turbine components, pump casings, seal sleeves, and propeller shafts. Its excellent low-temperature toughness and fatigue resistance ensure stable operation under dynamic loads and alternating water pressures.​
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Other High-Demand Fields: Also applied in marine engineering (ship propellers, seawater pipelines), nuclear power valves, and high-pressure reactors, adapting to harsh working conditions with ease.​
Conclusion​
 
EN 1.4418 (04Cr16Ni5Mo) stainless steel round bar stands out as a high-performance martensitic alloy, combining high strength, superior toughness, and excellent corrosion resistance. Its optimized design addresses the challenges of harsh environments in oil, gas, and hydropower industries, reducing maintenance costs and improving operational safety. As the demand for high-reliability materials grows, EN 1.4418 continues to be a preferred choice for critical engineering applications, delivering consistent performance and long-term value.

 

 

 EN 1.4418 (04Cr16Ni5Mo) Stainless Steel Round Bar – High Toughness Martensitic Bar for Oil, Gas & Hydropower Industries 0EN 1.4418 (04Cr16Ni5Mo) Stainless Steel Round Bar – High Toughness Martensitic Bar for Oil, Gas & Hydropower Industries 1EN 1.4418 (04Cr16Ni5Mo) Stainless Steel Round Bar – High Toughness Martensitic Bar for Oil, Gas & Hydropower Industries 2EN 1.4418 (04Cr16Ni5Mo) Stainless Steel Round Bar – High Toughness Martensitic Bar for Oil, Gas & Hydropower Industries 3

Бирки:

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