Nonmagnetic stainless steels Magnadur

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1 Nonmagnetic stainless steels Magnadur

2 02 OUR TECHNOLOGY AND EXPERTISE IN OIL AND GAS FIELD APPLICATIONS Our technology and expertise in oil and gas field applications The technology in the oil and gas exploration is continuously developing. Using the directional drilling, new oil and gas deposits - up to depths of 5 km and distances of 10 km away from the rig - can be tapped. This has the advantage that different deposits can be reached with only one rig. With the help of extremely sensitive measurement tools near the drill bit, the current position of the drill bit can be determined. The measuring methods of the tools can be distinguished in two methods:» MWD (Measuring While Drilling)» LWD (Logging While Drilling) MWDs are using the magnetic field of the earth to define the three-dimensionalposition of the drilling tool as well as the drilling direction, whereas LWDs determine information about the geological structure of the formation. To explore the resources deep under the seabed, steels with excellent corrosion resistance and strength, especially for the drill string components e.g. drill collars, internals and connections, are required. The stainless steels Magnadur of Deutsche Edelstahlwerke fulfil the increasing requirements of the oil and gas industry. Due to their special properties, such as the high corrosion resistance against aggressive media, the high strength and the low relative magnetic permeability, these stainless steels are the best choice for components of MWDs and LWDs as well as drill collars. Furthermore, the magnetic field of the earth remains uninfluenced by the use of Magnadur. Hereby precise measurements for determining the position of the drill bit are possible.

3 MAGNADUR 03 High performance nonmagnetic steels with defined mechanical, physical and chemical properties Magnadur The nonmagnetic stainless steels Magnadur are based upon a combination of high chromium, manganese, molybdenum and nitrogen content plus small amounts of nickel to ensure the stable austenitic microstructure. A homogeneous austenitic microstructure is the prerequisite for guaranteeing the specific magnetic permeability of µ r < All our Magnadur grades pass through special metallurgical processes, selective temperature control throughout the whole production as well as a demanding hot-cold forming process. Depending on existing stresses and application in the oil and gas exploration, Deutsche Edelstahlwerke supplies the nonmagnetic stainless steels:» Magnadur 501» Magnadur 509» Magnadur 601 For simple drill collars, heavy weights, flex collars and stabilisers with a low requirement on the strength level, according to AP 7, Magnadur 501 can be used. For higher demands on corrosion resistance and strength, like the housings of the MWDs and MWD/LWDs itselves, we recommend the use of Magnadur 601. Due to the higher nitrogen content and work hardening Magnadur 601 offers both higher ultimate tensile strength (> 150 ksi) and corrosion resistance. Through specific and application-oriented development Deutsche Edelstahlwerke broadened its portfolio of nonmagnetic stainless steels with Magnadur 509. Due to a richer chemistry than Magnadur 501, Magnadur 509 performs better in more aggressive media. As a benefit of the modified chemical composition Magnadur 509 is able to reach the strength level of Magnadur 601. Seabed Oil deposit CONSTRUCTION OF DRILLING TOOLS IN THE OIL AND GAS EXPLORATION 1. Drill collars» Thick-walled pipes to put pressure on the drill bit» SAE 4145» Magnadur 501 / Magnadur Stabiliser» Stabilising the thinner drill string within the hole» Magnadur Measurement and tracking housing» MWD / LWD technology (Measurements While Drilling / Logging While Drilling)» Magnadur 509 / Magnadur Rotor / Stator» Downhole motor of the drill head (stainless or tungsten carbide coated engineering grades) 5. Drive Subs» Coupling between the drill bit and drive motor (engineering grades) 6. Drill bit 1 Drill collars 2 Stabiliser 3 Measurement and tracking housing 4 Rotor / Stator 5 Drive Subs 6 Drill bit

4 04 MAGNADUR 501 Magnadur 501 CHEMICAL COMPOSITION (IN WEIGHT-%) C Si Mn P S Cr Ni Mo N Min Max Customer specific limitations of standard analysis are possible after consultation with the Deutsche Edelstahlwerke GmbH. Standards and designations Magnadur 501 is a non-standard special steel from Deutsche Edelstahlwerke GmbH. Special Properties Nonmagnetic alloy µ r < 1.01 in combination with high strength and high corrosion resistance. Corrosion Resistance (PREN 1 = 19-23) Magnadur 501 has a high resistance against intergranular corrosion according ASTM A 262 practice A and E and possesses a good resistance against stress corrosion cracking especially when a suitable surface treatment like shot or hammer peening is applied. The pitting corrosion resistance is suitable for standard drill collar applications. 1 PREN: Pitting resistance equivalent number %Cr + 3.3x %Mo + 16x %N PHYSICAL PROPERTIES Density in kg/dm 3 at» 20 C 7.8 Young s modulus in GPa at» 20 C 195 Thermal conductivity in W/(m K) at» 20 C 14.0 Thermal expansion coefficient in 10-6 K -1» 20 C 100 C» 20 C 200 C» 20 C 300 C Specific heat capacity in kj/(kg K) at» 20 C 0.50 Density in Lb/in 3 at» 68 F Young s modulus in ksi at» 68 F 28.3 x 10 3 Thermal conductivity in BTU in/(h ft 2 F) at» 68 F Thermal expansion coefficient in 10-6 F -1» 68 F F» 68 F F» 68 F F Specific heat capacity in BTU/(Lb F) at» 68 F 0.119

5 MAGNADUR MECHANICAL PROPERTIES IN FORGED AND WORK-HARDENED CONDITION AT ROOM TEMPERATURE 1 Ø» in mm» in in / Hardness in HB Min. R p All specimens are taken in accordance to API-standard in longitudinal direction one inch below the surface. Min R m Min. A 2 in % Min. Z in % Min. AV» in J» in ft-lbs Min. Fatigue strength Rotating 10 7 cycles

6 06 MAGNADUR 509 Magnadur 509 CHEMICAL COMPOSITION (IN WEIGHT-%) C Si Mn P S Cr Ni Mo N Min Max Customer specific limitations of standard analysis are possible after consultation with the Deutsche Edelstahlwerke GmbH. Standards and designations Magnadur 509 is a non-standard special steel from Deutsche Edelstahlwerke GmbH. Special Properties Nonmagnetic alloy µ r < 1.01 in combination with high strength and high corrosion resistance. Corrosion Resistance (PREN 1 = 28-33) Magnadur 509 has an excellent resistance against intergranular corrosion according to ASTM A 262 practice A and E and can withstand stress corrosion cracking to a certain extent. A surface treatment also improves SCC resistance to higher limits. With regard to pitting corrosion Magnadur 509 shows excellent values. The critical pitting corrosion potential is higher than the potential of Magnadur 501 and close to the potential of Magnadur 601. PHYSICAL PROPERTIES Density in kg/dm 3 at» 20 C» 100 C» 200 C» 300 C Young s modulus in GPa at» 20 C Thermal conductivity in W/(m K) at» 20 C» 100 C» 200 C» 300 C Thermal expansion coefficient in 10-6 K -1» 20 C 100 C» 20 C 200 C» 20 C 300 C Specific heat capacity in kj/(kg K) at» 20 C» 100 C» 200 C» 300 C PREN: Pitting resistance equivalent number %Cr + 3.3x %Mo + 16x %N Density in Lb/in 3 at» 68 F» 212 F» 392 F» 572 F Young s modulus in ksi at» 68 F 28.5 x 10 3 Thermal conductivity in BTU in/(h ft 2 F) at» 68 F» 212 F» 392 F» 572 F Thermal expansion coefficient in 10-6 F -1» 68 F F» 68 F F» 68 F F Specific heat capacity in BTU/(Lb F) at» 68 F» 212 F» 392 F» 572 F

7 MAGNADUR MECHANICAL PROPERTIES IN FORGED AND WORK-HARDENED CONDITION AT ROOM TEMPERATURE 1 Ø» in mm» in in / /4-9 3/4 Hardness in HB Min. R p All specimens are taken in accordance to API-standard in longitudinal direction one inch below the surface. Min R m Min. A 2 in % Min. Z in % Min. AV» in J» in ft-lbs Min. Fatigue strength Rotating 10 7 cycles

8 08 MAGNADUR 601 Magnadur 601 CHEMICAL COMPOSITION (IN WEIGHT-%) C Si Mn P S Cr Ni Mo N Min Max Customer specific limitations of standard analysis are possible after consultation with the Deutsche Edelstahlwerke GmbH. Standards and designations Magnadur 601 is a non-standard special steel from Deutsche Edelstahlwerke GmbH. Special Properties Nonmagnetic alloy µ r < 1.01 in combination with high strength and high corrosion resistance. Corrosion Resistance (PREN 1 = ) Magnadur 601 has an excellent resistance against stress corrosion cracking as far as tensile stresses are lower than 0.5 x yield strength. The pitting corrosion potential is far better than the potential of Magnadur 501. Although the PREN values of Magnadur 509 and 601 are in the same approximate range, Magnadur 601 is performing better with regard to pitting corrosion due to higher molybdenum content. 1 PREN: Pitting resistance equivalent number %Cr + 3.3x %Mo + 16x %N PHYSICAL PROPERTIES Density in kg/dm 3 at» 20 C 7.79 Young s modulus in GPa at» 20 C Thermal conductivity in W/(m K) at» 20 C» 100 C» 200 C» 300 C Thermal expansion coefficient in 10-6 K -1» 20 C 100 C» 20 C 200 C» 20 C 300 C Specific heat capacity in kj/(kg K) at» 20 C» 100 C» 200 C» 300 C Density in Lb/in 3 at» 68 F Young s modulus in ksi at» 68 F 28.5 x 10 3 Thermal conductivity in BTU in/(h ft 2 F) at» 68 F» 212 F» 392 F» 572 F Thermal expansion coefficient in 10-6 F -1» 68 F F» 68 F F» 68 F F Specific heat capacity in BTU/(Lb F) at» 68 F» 212 F» 392 F» 572 F

9 MAGNADUR MECHANICAL PROPERTIES IN FORGED AND WORK-HARDENED CONDITION AT ROOM TEMPERATURE 1 Ø» in mm» in in /4 > > 9 1/4-9 3/4 Hardness in HB Min. R p All specimens are taken in accordance to API-standard in longitudinal direction one inch below the surface. Min R m Min. A 2 in % Min. Z in % Min. AV» in J» in ft-lbs Min. Fatigue strength Rotating 10 7 cycles

10 10 CURRENT DENSITY POTENTIAL CURVE OF MAGNADUR ALLOYS CURRENT DENSITY POTENTIAL CURVE OF MAGNADUR ALLOYS 10 2 Magnadur 501 Magnadur 509 Magnadur current density i log [ma/cm 2 ] potential U [mv H ] solution: 800 ppm CI - temperature: 23 C velocity: 0,1 mv/s

11 DELIVERY FORMS AND DIMENSIONS 11 DELIVERY FORMS AND DIMENSIONS Magnadur Form of delivery Diameter in mm Diameter in in Forged bars, work-hardened, peeled / machined, solid or bored with common API IDs /4 Forged bars, work-hardened, peeled / machined, solid or bored with common API IDs /4 Forged bars work-hardened, peeled / machined, solid or bored with common API IDs /4 Delivery forms and dimensions Typically Magnadur is used in the work-hardened condition. Through a controlled forging process on a rotary hammer forging machine a uniform strain distribution over the entire circumference is achieved. Due to a rapid quenching after the pre-forging process the Magnadur steels are practically free of undesirably precipitations. This has an extremely positive effect on different types of corrosion. Delivery Programme You can find our complete delivery programme in the brochure High-tech Steel Solutions for tomorrow s World (Products and Services) on General note (liability) All statements regarding the properties or utilisation of the materials or products mentioned are for the purpose of description only. Guarantees regarding the existence of certain properties or certain utilisation are only ever valid if agreed upon in writing.

12 Deutsche Edelstahlwerke GmbH & Co. KG Auestr Witten Germany Phone: +49 (0) Fax: +49 (0) oiltool@dew-stahl.com