Project Description
Magnadur 509 Non-Magnetic Stainless Steel
Product Description
Magnadur 509 is a premium non-magnetic stainless steel developed by Deutsche Edelstahlwerke GmbH, featuring exceptional non-magnetic properties with permeability μ < 1.01. This specialized alloy combines high strength with superior corrosion resistance, making it ideal for applications requiring both magnetic neutrality and structural integrity in demanding environments. With a well-balanced chemical composition including 17.0-19.0% chromium and 2.50-3.50% nickel, Magnadur 509 offers enhanced resistance to intergranular corrosion compared to standard stainless steels, with a higher PREN value (28-33) than similar non-magnetic alloys.
Applications
Magnadur 509 is specifically designed for critical petroleum measurement components where both non-magnetic properties and high corrosion resistance are essential. It is particularly suitable for downhole measurement instruments, drill collars, and measurement-while-drilling (MWD) equipment operating in harsh environments with exposure to corrosive fluids. The material’s excellent resistance to stress corrosion cracking makes it ideal for components subject to high mechanical stress in sour service conditions. Magnadur 509’s enhanced pitting corrosion resistance (higher than Magnadur 501) makes it particularly valuable for precision measurement tools in aggressive petroleum environments where magnetic interference would compromise operational accuracy.
Standards
Magnadur 509 is manufactured as a non-standard special steel from Deutsche Edelstahlwerke GmbH. It complies with the following standards:
- ASTM A 262 practice A and E (corrosion testing)
- PREN value: 28-33 (Pitting Resistance Equivalent Number)
- PREN formula: %Cr + 3.3x %Mo + 16x %N
The alloy can withstand stress corrosion cracking to a certain extent, with surface treatments further improving SCC resistance.
Chemical Composition and Grade Comparison
Chemical Composition (in weight-%)
| Element | C | Si | Mn | P | S | Cr | Ni | Mo | N |
|---|---|---|---|---|---|---|---|---|---|
| Min. | – | – | 18.0 | – | – | 17.0 | 2.50 | 0.90 | 0.50 |
| Max. | 0.05 | 0.30 | 20.0 | 0.03 | 0.005 | 19.0 | 3.50 | 1.20 | 0.60 |
Mechanical Properties
Magnadur 509 offers excellent mechanical properties in forged and work-hardened condition at room temperature:
Physical Properties
| Property | Metric | Imperial |
|---|---|---|
| Density at 20°C | 7.88 kg/dm³ | 0.277 lb/in³ at 68°F |
| Density at 100°C | 7.85 kg/dm³ | 0.276 lb/in³ at 212°F |
| Density at 200°C | 7.80 kg/dm³ | 0.273 lb/in³ at 392°F |
| Density at 300°C | 7.75 kg/dm³ | 0.273 lb/in³ at 572°F |
| Young’s modulus | 196.5 GPa at 20°C | 28.5 x 10⁶ ksi at 68°F |
| Thermal conductivity at 20°C | 12.7 W/(m·K) | 88.13 BTU·in/(h·ft²·°F) at 68°F |
Mechanical Properties in Forged and Work-Hardened Condition
| Diameter Range | 75-216 mm (3-8½”) | 217-250 mm (8¾-9¾”) |
|---|---|---|
| Hardness in HB | ≥ 290 | ≥ 290 |
| Min. Yield Strength (Rp0.2) | 900 MPa (130 ksi) | 830 MPa (120 ksi) |
| Min. Tensile Strength (Rm) | 965 MPa (140 ksi) | 900 MPa (130 ksi) |
| Min. Elongation (A5) | 20% | 20% |
| Min. Reduction of Area (Z) | 50% | 50% |
| Min. Impact Energy (AV) | 135 J (100 ft-lbs) | 135 J (100 ft-lbs) |
| Min. Fatigue Strength | 445 MPa (65 ksi) | 445 MPa (65 ksi) |
Thermal Properties
| Property | Metric | Imperial |
|---|---|---|
| Thermal expansion coefficient (20°C-100°C) | 16.5 x 10-6K-1 | 9.17 x 10-6F-1 (68°F-212°F) |
| Thermal expansion coefficient (20°C-200°C) | 17.5 x 10-6K-1 | 9.72 x 10-6F-1 (68°F-392°F) |
| Thermal expansion coefficient (20°C-300°C) | 18.5 x 10-6K-1 | 10.33 x 10-6F-1 (68°F-572°F) |
| Specific heat capacity at 20°C | 0.48 kJ/(kg·K) | 0.115 BTU/(lb·°F) at 68°F |
Available Dimensions
SHUNFU METAL supplies Magnadur 509 in the following dimensions:
- Round Bars: Diameter range from 20 mm to 280 mm (0.8″ to 11″)
- Hollow Bars: Outer diameter from 75 mm to 250 mm (3″ to 10″) with various wall thicknesses
Custom dimensions are available upon request to meet specific project requirements.
Corrosion Resistance
Magnadur 509 demonstrates excellent resistance against intergranular corrosion according to ASTM A 262 practice A and E testing. The critical pitting corrosion potential is significantly higher than that of Magnadur 501, making it particularly suitable for environments with aggressive corrosive media. The alloy can withstand stress corrosion cracking to a certain extent, with surface treatments further improving SCC resistance. With a PREN value of 28-33, Magnadur 509 offers superior protection against localized corrosion in petroleum environments compared to conventional non-magnetic steels.
Why Choose SHUNFU METAL for Magnadur 509
When sourcing Magnadur 509 non-magnetic stainless steel for your critical petroleum measurement applications, SHUNFU METAL delivers exceptional quality and service. Our inventory of Magnadur 509 meets the most stringent industry standards and undergoes comprehensive quality control to ensure consistent performance in challenging downhole environments. We understand the critical importance of non-magnetic properties combined with corrosion resistance in measurement-while-drilling operations and provide complete material traceability and certification.
Our technical experts can assist you in selecting the optimal specification of Magnadur 509 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.
Contact us today with your Magnadur 509 requirements. Our team is ready to provide detailed quotations and technical support to help you select the ideal material specification for your critical projects.
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
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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.
