DUPLEX & SUPER DUPLEX STEEL
|-||Similar to 32750 with slight differences, competes strongly with super austenitic grades.|
SAGAR STEEL’S based manufacturing & supplier specialize in no-compromise manufacture using state of the art CNC equipment, and the finest steels available.
We are also a very large stockholder of hot work tool steels, stainless steels (440c / 1.4125 / 4125 / X105CrMo17), duplex stainless steel (ASTM A182 A276 / AISI / F51 EN / DIN (Werkstoff) 1.4462 and X2CrNiMoN22-5-3, UNS 31803 / S31803 / S32205, Afnor Z2CND22-5Az, BS318S13, SS2377, BS332C15, EN (10283) 1.4770, branded steel SAF2205, URANUS 45N, FALC223) and now Super Duplex stainless steel conforming to ASTM / AISI / F55 in round bar and plate / sheet form.
"Super" duplex grades have enhanced pitting and crevice corrosion resistance compared with the ordinary austenitic or duplex types. This is due to the further additions of chromium, molybdenum, and nitrogen to these grades. It also conforms, or is similar to, EN / DIN (Werkstoff) 4501 / 1.4501 / X2CrNiMoCuWN25.7.4 / UNS 32760 / S32760, UNS - ASTM A276 S32760 / AISI F55 / GOST 12Kh13 / Afnor Z3CND25.06Az and branded steel Zeron 100. Also 1.4410 / UNS S32550 / UNS S32750 / Z3CNDU25.07Az / SS2328 / X2CrNiMoCuN25.6.3 / SAF 2507 SANMAC / Uranus 52N.
|AISI||F55 (A182 / A276 / A479)|
|NORSOK||M630 MDS D57 BAR M630 MDS D54 FORGINGS M630 MDS D55 PLATE M630 MDS D56 CASTINGS M650 Qualification of Manufacturer|
|OTHER||NACE MR01-75 ISO 15156 EN 10088-3 PED 97/23/EC ASTM G48 Method A ASTM A751 COMPOSITION ASTM A388 U/T API 6A - PSL 4|
Industries that use 32760 include:
•Flue gas desulfurization
•Oil and Gas
•Pulp and Paper
Products partially or completely constructed of 32760 include:
•Engineering equipment for pollution control
•Pressure vessels •Risers
•Seawater, firewater and subsea pipe work systems
•Utility and industrial scrubber systems
The information above is not warranted, guaranteed, or for design purposes.
|AISI||F53 (A182 / A479)|
|UNS S32550 / S32520 / FERRALIUM 255-SD50 / S31260 / S39226|
|UNS S32760 / AISI-F55 / 1.4501|
|Z3CNDU25.07Az / Z3CND25.06Az|
|X2CrNiMoCuN25.6.3 / X2CrNiMoCuWN25.7.4|
|1.4507 / 1.4501|
|ZERON 100® URANUS52N(+)®|
|0.03||1.2||0.35||0.02||0.08||24.-26.||6. – 8.||3. – 5.||0.5||N .24 – .32||INQUIRE|
|S32750||Super Duplex||-||A-479||-||Higher chromium and nitrogen content in Super Duplex makes it superior in corrosion resistance and enables a longer lifespan than Duplex.|
Industries that use Super Duplex include:
•Oil and Gas production
•Pulp and Paper
Products partially or completely constructed of Super Duplex include:
•Hot water tanks
•Lifting and pulley equipment
•Spiral wound gaskets
Generally, UNS S31803 has been solely designated to the Duplex 2205® grade. More recently, it has been available complying with the higher corrosion resistant composition UNS S32205. The only difference in the UNS numbers is that UNS S32205 contains a higher nitrogen content which guarantees better corrosion resistance. Composed of between 21% to 23% chromium, 4.5% to 6.5% nickel, 5% to 3.5% molybdenum, 2% manganese, and 1% silicon, with the balance being iron. Also found in Duplex Stainless Steel are trace amounts of carbon, phosphorus, sulfur and nitrogen.
Benefits of Duplex include: good weldability and workability, high resistance to corrosion fatigue, stress corrosion cracking (especially chloride stress corrosion cracking), erosion, and high energy absorption. Other advantages of Duplex are higher heat conductivity and low thermal expansion compared to austenitic stainless steels, high strength, good resistance to sulfide stress corrosion, and high resistance to pitting and crevice to corrosion. Duplex 2205® accounts for over 80% of the total usage of Duplex stainless steels throughout the world because of its superior workability as well as corrosion resistance.
|AISI - A182||F51 (329LN) / F60|
|UNS - ASTM A276||S31803 / S32205|
|BRANDS®||SAF 2205 - SANMAC URANAUS 45N FALC223|
|-||Roughly double the strength of standard austenitic stainless steels, designed to improve resistance in many applications such as chloride environments and sulfide stress corrosion.|
One of the earliest duplex steel which is reflected in its higher permitted carbon content. Its resistance to pitting (PREN about 32) and to crevice corrosion is below that of super duplex steels, therefore use in seawater is limited. Exposure to moderate and high temperature and less rapid cooling may cause embrittlement. Accordingly, design stress values in ASME II do not extend above 260°C for S32900. Impact values are high at room temperature. However, the proportion and orientation of ferrite in welds and base material may significantly affect toughness at subzero temperatures.
|UNS S32900 Chemical Composition|
|UNS S32900 Physical Properties|
|UNS S32900 Mechanical Properties
|Tensile Strength@Break||725Mpa/10500psi Min|
|Tensile Strength@Yiel||550Mpa/79800psi Min0.2%offset|
|Elongation@Break||25%Min in 2"|
Duplex Stainless Steel 329 also conforms, or is similar to EN/DIN 1.4460 and 00Cr25Ni5Mo2 / SUS 329J1 / AISI 329 / UNS S32900 / Brands SS44 / SS 2324 / Din X8CrNiMo27-5 / ASME SA268 / ASTM A268 / ASTM A511 / SS 14 2324 / SIS 14 2324 / 453S
Duplex Stainless steel 329 can be used for heat exchangers, chemical tanks, refineries, shafts (marine, etc) pressure vessel parts, flanges, fittings & pipes for the oil and gas industries and offshore technology, paper industry, compressor parts and seawater desalination plants amongst many other applications.
Download UNS S32900 the mechanical properties of the report, the report provides detailed performance analysis and application.
Principal Design Features
One of the most widely used precipitation hardening grades in the business. While soft and ductile in the solution annealed condition, it is capable of high properties with a single precipitation or aging treatment. Characterized by good corrosion resistance, high harness, toughness and strength.
Long, gummy chips characterize this alloys machinability. It can be machined in the annealed condition, however condition H1150M will yield best results. Post machining solution treatment of parts will be required prior to final hardening if machining in this condition.
CONDITION A--Soak at 1900 F (1038 C) for 30 minutes and cool below 60 F (16 C) for complete martensite transformation. CONDITION H 950- Treat Condition A material at 900 F(482 C) for 1 hour, air cool.. CONDITION H925, H1025, H1075, H1100, H1150- Soak solution treated material for 4 hours at specified temperature, air cool, CONDITION H1150M- Soak solution treated material at 1400 F (760 C) for 2 hours, air cool, then re-heat to 1150 F (620 C) for 4 hours and air cool.
Successfully welded by common fusion and resistance methods, this alloy should not be joined by oxyacetylene welding. AWS E/ER630 filler metal is recommended if required.
Soak for 1 hour at 2150 F (1177 C) prior to forging. Do not work below 1850 F (1010 C). Post-work solution treatment is required prior to final hardening.