S32750 Stainless Steel Seamless Tubing

S32750 Stainless Steel Seamless Tubing direct from the factory. High-quality, durable and corrosion-resistant. Perfect for industrial applications.

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  • S32750 Stainless Steel Seamless Tubing

PRODUCTS DETAILS

Super Duplex stainless like S32750, is a mixed microstructure of austenite and ferrite (50/50) which has improved strength over ferritic and austenitic steel grades. The main difference is that Super Duplex has a higher molybdenum and chromium content which gives the material greater Higher chromium also promotes the formation of detrimental intermetallic phases, which are sensitive to 475°C embrittlement because of precipitation of the chromium-rich α’ phase, and to embrittlement by sigma, chi and other phases at higher temperatures.  Alloy 2507 (S32750) also has higher nitrogen content, which not only promotes the formation of austenite and increases the strength, but also delays the formation of intermetallic phases enough to permit processing and fabrication of the duplex grade. The grade is characterized by very good chloride corrosion resistance, combined with very high mechanical strength. It is particularly suited for use in aggressive environments such as warm chlorinated seawater and acidic chloride-containing media. Alloy 2507 (S32750) characteristics are as follows: ● Excellent resistance to stress corrosion cracking (SCC) in chloride-bearing environments ● Excellent resistance to pitting and crevice corrosion ● High resistance to general corrosion ● Very high mechanical strength ● Physical properties that offer design advantages ● High resistance to erosion corrosion and corrosion fatigue ● Good weldability S32750 is designed for demanding applications which require exceptional strength and corrosion resistance, which are found in chemical process, petrochemical, and seawater equipment. It is widely used in offshore oil and gas exploration/production and in heat exchangers in petrochemical/chemical processing. The grade is also suitable for hydraulic and instrumentation applications in tropical marine environments.ASTM A-789, ASTM A-790Super Duplex 2507 (UNS S32750) Composition %
C Carbon Mn Manganese P Phosphorous S Sulfur Si Silicon Ni Nickel Cr Chromium Mo Molybdenum N Nitrogen Cu Copper
0.030 max 1.20 max 0.035 max 0.020 max 0.80 max 6.0-8.0 24.0-26.0 3.0-5.0 0.24- 0.32 0.50 max
O.D O.D Toleracne W.T Tolerance
Inch mm %
1/8" +0.08/-0 +/-10
1/4" +/-0.10 +/-10
Up to 1/2" +/-0.13 +/-15
1/2" to 1-1/2" , excl +/-0.13 +/-10
1-1/2" to 3-1/2" , excl +/-0.25 +/-10
Note: The tolerance can be negotiated according to the customer's specific requirements
Mechanical Properties 
Yield Strength 30 Ksi min
Tensile Strength 75 Ksi min
Elongation(2" min) 35%
Hardness(Rockwell B Scale) 90 HRB max
Maximum allowable pressure(unit: BAR)
Wall Thickness(mm)
    0.89 1.24 1.65 2.11 2.77 3.96 4.78
O.D(mm) 6.35 387 562 770 995      
9.53 249 356 491 646 868    
12.7 183 261 356 468 636    
19.05   170 229 299 403    
25.4   126 169 219 294 436 540
31.8     134 173 231 340 418
38.1     111 143 190 279 342
50.8     83 106 141 205 251

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