Material Grade Specification

Super Duplex Zeron 100 Flanges — ASTM A182 Grade F55

Super Duplex Zeron 100 flange manufacturer, Mumbai. UNS S32760 F55 with Cu+W additions, high resistance to sulfuric & hydrochloric acids. Quote in 30 min.

Material Specification & Overview

Zeron 100 (UNS S32760 / F55) is a highly alloyed super duplex stainless steel containing deliberate additions of Copper (0.5-1.0%) and Tungsten (0.5-1.0%) for superior performance in hot concentrated acids.

UNS DesignationS32760 (F55)
Governing StandardASTM A182 / ASME SA-182 Grade F55

Chemical Composition (wt %)

Governing specification limits per ASTM / ASME standards. Actual values provided on EN 10204 3.1 MTC.

ElementSpecification Limit / Composition
Chromium (Cr)24.0 - 26.0%
Molybdenum (Mo)3.0 - 4.0%
Tungsten (W)0.50 - 1.00%
Copper (Cu)0.50 - 1.00%

Mechanical Properties

PropertySpecification Limit
Yield Strength550 MPa (80 ksi) min
Tensile Strength750 MPa (109 ksi) min
PREN≥ 41.5

Pressure-Temperature Rating Reference

Service TempClass 150Class 300Class 600Class 900
Ambient (-29 to 38°C)290 psi750 psi1500 psi2250 psi

Primary Industry Applications

Sulfuric acid production plant piping
Offshore oil platform firewater systems
Geothermal brine injection systems
Pollution control scrubber systems

Related Products & Industry Guides

Frequently Asked Procurement Questions

Q: Why does Zeron 100 include Copper and Tungsten additions?

A: Copper enhances corrosion resistance in non-oxidizing acids like sulfuric acid, while Tungsten reinforces resistance to pitting and crevice corrosion in acidic brine service.

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