Project Description
Super13Cr, 1.4418 mod Modified Martensitic Stainless Steel
Product Description
Super13Cr, 1.4418 mod is an advanced modified martensitic stainless steel specifically developed for demanding oil and gas applications. This premium alloy combines exceptional corrosion resistance, high strength, and excellent toughness through its carefully balanced chemical composition featuring nickel (4.5%), molybdenum (1.5-3.0%), and very low carbon content (≤0.03%). Unlike conventional 13Cr martensitic stainless steels, Super13Cr offers significantly improved resistance to hydrogen sulfide (H₂S), carbon dioxide (CO₂), and chloride environments, making it the material of choice for sour service applications in the petroleum industry. The quenched and tempered (QT) condition delivers an optimal combination of mechanical properties and corrosion resistance, allowing this sophisticated alloy to perform reliably in the most challenging downhole environments.
Applications
Super13Cr, 1.4418 mod is specifically engineered for critical applications in oil and gas exploration and production, particularly in sour service environments. Its primary applications include:
- Oil Country Tubular Goods (OCTG) for sour service applications
- Completion equipment exposed to H₂S and CO₂ environments
- Downhole tools and components in corrosive wells
- Production tubing in high-pressure, high-temperature (HPHT) wells
- Flow control equipment including valves and chokes
- Wellhead components and Christmas trees exposed to sour environments
- Subsea equipment in corrosive marine environments
- Sucker rods and pump components in challenging well conditions
- Completion mandrels and packers
- Artificial lift system components
The exceptional balance of mechanical properties and corrosion resistance makes Super13Cr, 1.4418 mod particularly valuable for applications where conventional martensitic and duplex stainless steels would be susceptible to sulfide stress cracking (SSC) or chloride stress corrosion cracking.
Standards and Qualifications
Super13Cr, 1.4418 mod complies with the following international standards and industry qualifications:
- NACE MR0175/ISO 15156 Annex B.2.3 for sour service applications
- NORSOK M-650 qualification protocols
- API 5CT/ISO 11960 for OCTG applications
- API 6A/ISO 10423 for wellhead equipment
- ASTM A182/A182M for forged fittings
- European Standards: comparable to modified EN 1.4418
- Material specifications from major oil and gas operators including ExxonMobil, Shell, BP, Total, Equinor, and others
The production route is fully qualified following NORSOK M-650 qualification protocols, ensuring consistent quality and performance in critical applications.
Chemical Composition and Grade Comparison
Chemical Composition (in %)
| Element | C | Si | Mn | P | S | Cr | Ni | Mo | V |
|---|---|---|---|---|---|---|---|---|---|
| Min | ≤ | ≤ | ≤ | ≤ | ≤ | 12.0* | 4.5 | 1.5 | ≤ |
| Max | 0.03 | 0.50 | 1.00* | 0.020 | 0.005 | 14.0* | 6.0* | 3.0 | 0.50 |
*Estimated values based on typical Super13Cr composition, as exact Cr, Mn, and upper Ni limits were not provided in the source data.
Grade Comparison
| Property | Super13Cr, 1.4418 mod | Standard 13Cr (AISI 410) | 22Cr Duplex (F51/1.4462) |
|---|---|---|---|
| Yield Strength (95 ksi grade) in MPa | ≥ 655 | ≥ 550 | ≥ 450 |
| H₂S Resistance | Excellent (qualified to NACE MR0175) | Limited | Good |
| CO₂ Corrosion | Excellent | Moderate | Good |
| Chloride SCC Resistance | Good | Poor | Excellent |
| Maximum Service Temperature | ~175°C (347°F) | ~150°C (302°F) | ~250°C (482°F) |
Mechanical Properties
Super13Cr, 1.4418 mod offers exceptional mechanical properties in quenched and tempered (QT) condition:
Mechanical Properties in Quenched and Tempered (QT) Condition
| Property | 95 ksi Grade | 110 ksi Grade |
|---|---|---|
| Diameter OD range in mm (inch) | ≤ 230 (9) | ≤ 311.15 (12 ¼) |
| 0.2%-Offset-Yield Strength Rp0.2 in MPa (ksi) | ≥ 655 (95) | ≥ 755 (110) |
| Tensile Strength Rm in MPa (ksi) | ≥ 724 (105) | ≥ 862 (125) |
| Elongation L0 = 4 d (A5) in % | ≥ 19 | ≥ 17 |
| Impact Toughness (Charpy-V at 23 °C) in J (ft-lbs) | ≥ 108 (80) | ≥ 81 (60) |
| Hardness in BHN (HRC) | ≥ 300 (27) | ≥ 310 (32) |
Physical Properties
| Property | Value |
|---|---|
| Density | 7.7 g/cm³ at 20°C |
| Elastic modulus | 200 GPa at 20°C |
| Thermal conductivity at 20°C | 18 W/m·K |
| Specific heat capacity at 20°C | 430 J/kg·K |
| Electrical resistivity at 20°C | 0.60 μΩ·m |
| Thermal expansion coefficient (20-100°C) | 11.0 × 10⁻⁶ /K |
Available Dimensions
SHUNFU METAL supplies Super13Cr, 1.4418 mod in the following dimensions:
- Round Bars:
- 95 ksi Grade: Diameter range from 10 mm to 230 mm (0.394″ to 9″)
- 110 ksi Grade: Diameter range from 10 mm to 311.15 mm (0.394″ to 12 ¼”)
- Hollow Bars: Various dimensions according to customer specifications
- Forged Components: According to drawings and customer requirements
- Seamless Pipes and Tubes: According to API and ASTM specifications
All products are supplied in the quenched and tempered (QT) condition to ensure optimal mechanical properties and corrosion resistance. Custom dimensions and specifications are available upon request to meet specific project requirements.
Corrosion Resistance
Super13Cr, 1.4418 mod offers exceptional corrosion resistance properties specifically tailored for oil and gas environments:
- Sour Service (H₂S) Resistance: Qualified according to NACE MR0175/ISO 15156 Annex B.2.3 for sour service applications. The material can withstand partial pressures of H₂S significantly higher than conventional 13Cr martensitic stainless steels.
- CO₂ Corrosion: Excellent resistance to sweet corrosion (CO₂) environments commonly encountered in oil and gas production.
- Chloride Resistance: Enhanced resistance to chloride-induced pitting and crevice corrosion compared to standard martensitic stainless steels.
- General Corrosion: Superior performance in a wide range of corrosive environments including production fluids with elevated temperatures.
- Stress Corrosion Cracking (SCC): Improved resistance to chloride stress corrosion cracking and sulfide stress cracking (SSC) due to the modified chemical composition and controlled heat treatment.
The exceptional combination of corrosion resistance and mechanical properties makes Super13Cr, 1.4418 mod suitable for applications where conventional materials would fail due to the combined effects of corrosion and mechanical stress.
Heat Treatment
Super13Cr, 1.4418 mod achieves its optimal properties through a carefully controlled heat treatment process:
- Austenitizing: Typically 950-1050°C (1742-1922°F) followed by quenching
- Tempering: 580-650°C (1076-1202°F) depending on desired mechanical properties
- Double Tempering: Often employed to achieve optimal combination of strength and toughness
- Stress Relieving: When required for dimensional stability
All SHUNFU METAL products are supplied with documented heat treatment records to ensure traceability and compliance with specifications.
Why Choose SHUNFU METAL for Super13Cr, 1.4418 mod
When sourcing Super13Cr, 1.4418 mod for your critical oil and gas applications, SHUNFU METAL delivers superior quality and service. Our inventory of Super13Cr, 1.4418 mod meets the most stringent industry standards and undergoes comprehensive quality control to ensure consistent performance in challenging sour service environments. We provide complete material traceability and certification, including:
- Detailed mechanical testing reports
- Chemical composition analysis
- Heat treatment documentation
- Non-destructive testing results
- Microstructure examination reports
- Corrosion testing certification when required
Our technical experts can assist you in selecting the optimal grade and specification of Super13Cr, 1.4418 mod for your specific application requirements, ensuring maximum performance and service life of your equipment. With competitive pricing, reliable global shipping, and responsive customer service, we aim to be your trusted partner for specialty steel solutions in the oil and gas industry.
Contact us today with your Super13Cr, 1.4418 mod requirements. Our team is ready to provide detailed quotations and technical support to help you select the ideal material specification for your critical projects in challenging sour service environments.
We are committed to integrate steel resources in china and serve the global steel market. Our company has more than 15 years of experience in steel researching, production, managing and sales. And our team mostly are based on and worked in national famous steel enterprise before. In the aspect of resources and information, we have established cooperative relationship with nearly hundred enterprises, either state-owned or private owned in China.
What’s more, we have built long, deep and close business relationship with dozens of steel company, Sharing and holding equities with several steel enterprises. Because of the close cooperation with steel companies and our pioneering spirit, which can ensure us stay at the top competition, and ensure our customers get what they really want. We provide preffesional one-stop service to the Contractors of follows project:
- Oil and Gas Pipeline Construction
- Onshore and Offshore
- Boiler Manufacturers
- Oil Refining Equipment
- Petroleum and Chemical Plant Construction
- Fire Protection
- Heating & Air Conditioning
Our ability to purchase materials directly from leading mills at the best possible price will give you the competitive edge. This coupled with a skilled workforce dedicated to embracing the demands of the markets we serve. Just give us a call +86-731-89903933.
