APM 2327, UNS S32505
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APM 2327, UNS S32505 HOT ISOSTATIC PRESSED (HIP) PRODUCTS DATASHEET APM 2327 is a powder metallurgical super duplex stainless steel. Compared to conventional duplex steels the grade has improved mechanical properties, corrosion resistance and superior corrosion fatigue performance. The chemical composition is optimized for manufacturing large components with high wall thickness and is very similar to ASTM A182-F61 (UNS S32550) which requires max. 0.25% nitrogen. The corresponding European norm, W.Nr 1.4507, allows 0.30% nitrogen. APM 2327 has a nitrogen content of 0.25-0.30% which gives improved corrosion and mechanical properties. STANDARDS - ASTM: A988 - EN Number: 1.4410 Approvals - ASME B31.3 - Qualified according to NORSOK M650 (D52 eller D54). Maximum thickness 200mm Datasheet updated 3/8/2018 8:56:03 AM (supersedes all previous editions) CHEMICAL COMPOSITION (NOMINAL) % Chemical composition (nominal) % C Cr Mo Ni Cu N <0.03 26 3 7 2 0.27 Balance Fe. FORMS OF SUPPLY Components can be supplied in a wide range of dimensions and shapes because of the flexibility provided by powder metallurgy and near net shape technology. The products are supplied in the solution annealed and water quenched condition. APPLICATIONS Thanks to its excellent corrosion properties, APM 2327 is a highly suitable material for service in environments containing chlorides and hydrogen sulphide. The material is suitable for use for topside and subsea offshore components, such as valve bodies, manifolds, swivels and headers. The steel is also suitable for use in dilute sulphuric acid solutions and for handling organic acids, e.g. acetic acid and mixtures. The high strength of APM 2327 makes the material an attractive alternative to austenitic steels in structures subjected to heavy loads. good mechanical and corrosion properties make APM 2327 an economical choice in many applications by reducing the life cycle cost of equipment.

Hot isostatic pressed components have isotropic properties, meaning the mechanical properties are similar in all directions. Mechanical properties at 20°C (68°F) Minimum* Typical * Minimum values according to ASTM 988. Impact toughness values valid for wall thicknesses up to 200 mm (round bar) at T/4. Proof strength at elevated temperatures Temperature Rp0.2 Minimum Typical PHYSICAL PROPERTIES Density: 7.8 g/cm3, 0.28 lb/in3 Mean coefficient of thermal expansion, 20-100°C: 13.5x10-6/°C Modulus of elasticity* Temperature, °C MPa Temperature, °F ksi * (x103)...

Fine isotropic microstructure of HIPed material vs. forged bar. CORROSION RESISTANCE In most media, APM 2327 possesses better resistance to general corrosion than steel of type ASTM 316L and 317L. Pitting corrosion Thanks to the high content of chromium, molybdenum and nitrogen, APM 2327 has good pitting and crevice corrosion resistance. A parameter for comparing the resistance of different steels to pitting corrosion is the PRE number (Pitting Resistance Equivalent). The PRE is defined as, in weight %: PRE = % Cr + 3.3 x % Mo + 16 x % N. The critical pitting temperature of APM 2327...

electrodes or gas shielded arc welding. Welding should be undertaken within the heat input range 0.5-2.5 kJ/mm. Max. interpass temperature is 150°C (482° F), depending on the application. Preheating or post-weld heat treatment is normally not necessary. Matching filler metals are recommended in order to obtain a weld metal with optimum corrosion resistance and mechanical properties. For gas-shielded arc welding we recommend Sandvik 22.8.3.L or Sandvik 22.8.3.LSi, developed to give improved welding properties by gas metal arc welding (MIG/MAG). For manual metal-arc welding, covered electrode...