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Valve Material Reference

ASTM A182 F53 Valve

Super Duplex 2507 (F53)

Super Duplex 2507 forged stainless steel - the highest-grade duplex material, providing exceptional corrosion resistance in highly aggressive seawater and chloride environments with PREN above 40.

Form

Forged

Max Temp

+300°C (+572°F)

Min Temp

-50°C (-58°F)

Category

Duplex

What is ASTM A182 F53?

ASTM A182 F53 (Super Duplex 2507 (F53)) is a duplex valve material. Super Duplex 2507 forged stainless steel - the highest-grade duplex material, providing exceptional corrosion resistance in highly aggressive seawater and chloride environments with PREN above 40. Temperature range: -50°C to +300°C (-58°F to +572°F).

Form:
forged
Max Temp:
+300°C (+572°F)
Min Temp:
-50°C (-58°F)

Chemical Composition - ASTM A182 F53

Cr 24-26%, Ni 6-8%, Mo 3-5%, N 0.24-0.32%, Mn ≤ 1.2%, Si ≤ 0.8%. PREN = Cr + 3.3Mo + 16N, typically 42-45.

Temperature Range

-50°C to +300°C (-58°F to +572°F)

Maximum Temperature

+300°C (+572°F)

Minimum Temperature

-50°C (-58°F)

Vajra Industrial Solutions manufactures and supplies valves in ASTM A182 F53 (Super Duplex 2507 (F53)) for subsea wellhead and tree valves in aggressive sour/seawater service, with EN 10204 3.1 material traceability on every order.

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Send your size, class and end connection — we'll quote ASTM A182 F53 (Super Duplex 2507 (F53)) valves with full MTCs in 24 hours.

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Equivalent Grades - ASTM A182 F53

StandardEquivalent Grade
ASTMA182 F53 / A182 F55
EN1.4410 X2CrNiMoN25-7-4
UNSS32750
Trade nameSAF 2507, Ferrinox 255, Zeron 100

Suitable Services

Subsea wellhead and tree valves in aggressive sour/seawater service

Offshore desalination (SWRO) pump and valve trains at 600 bar

Seawater injection valves on floating production units (FPSO, FLNG)

Offshore flare and blowdown isolation in chloride-laden atmosphere

Chemical process valves handling hot concentrated chlorides, bleach, or HF

Not Suitable For

Service above +300°C - risk of sigma-phase embrittlement

Strong nitric acid service - 316L or Alloy 20 more appropriate

Where cost is the primary driver - A182 F51 (Duplex 2205) is 30-40% less expensive

Valve Body Applications

Ball valve bodies for seawater injection at 600 bar offshore

Gate valve bodies for subsea wellhead and christmas tree service

Globe valve bodies in desalination SWRO brine/reject circuits

Check valve bodies in chloride-laden offshore environments

Trim Applications

Ball and seat inserts in seawater service (work-hardened F53 or Stellite 6 overlay)

Gate valve wedge overlaid with F53 weld deposit for chloride erosion-corrosion

Stem material for ball and gate valves in offshore chemical injection

Typical Valve Types in ASTM A182 F53

Ball valves

Gate valves

Globe valves

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Engineering references

Reviewed by Materials Engineering, Vajra Industrial SolutionsDiscipline: Valve Metallurgy & Materials SelectionLast reviewed: 20 June 2026

Connected Engineering

Need ASTM A182 F53 Valves?

We supply ASTM A182 F53 (Super Duplex 2507 (F53)) valves with full certification documentation — EN 10204 3.1/3.2 MTCs and hydrotest certs as standard.

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