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Stainless Steel Elbow A403 WP321H For High Temperature Piping Systems

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Stainless Steel Elbow A403 WP321H For High Temperature Piping Systems

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Brand Name :	YUHONG
Model Number :	A403 WP321H
Certification :	ABS, GL, DNV, NK, PED, AD2000, CCS, ISO 9001-2008
Price :	Negotiable
Payment Terms :	L/C,T/T
Supply Ability :	10000 PCS PER MONTH
Delivery Time :	Depending on QTY

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Stainless Steel Elbow A403 WP321H For High Temperature Piping Systems

A403 WP321H Stainless Steel Elbow - High-Temperature Corrosion Resistant Pipe Fitting

Product Introduction

A403 WP321H Stainless Steel Elbows are ASME B16.9/B16.25 compliant butt-weld fittings engineered for extreme environments. The addition of Titanium (Ti) stabilizes the alloy against carbide precipitation, making it ideal for continuous high-temperature service (450°C–900°C) and corrosive media. These elbows are solution-annealed & quenched to maximize intergranular corrosion resistance in acidic, chloride-rich, and oxidizing conditions.

Key Advantages

Superior Heat Resistance – Maintains structural integrity up to 900°C
Stress Corrosion Cracking (SCC) Resistance – Critical for chemical/petrochemical applications
ASTM A403 & ASME B16.9 Certified – Guaranteed dimensional/tolerance compliance
Weld-Ready Design – Beveled ends ensure full-penetration weld integrity

Chemical Composition (ASTM A403 WP321H)

Element	Content (%)	Function
Carbon (C)	≤ 0.08	Controls strength & hardness
Chromium (Cr)	17.0–19.0	Corrosion/oxidation resistance
Nickel (Ni)	9.0–12.0	Austenite stability & toughness
Manganese (Mn)	≤ 2.00	Deoxidization & sulfur control
Silicon (Si)	≤ 1.00	Deoxidization & fluidity
Phosphorus (P)	≤ 0.045	Impurity control
Sulfur (S)	≤ 0.030	Machinability improvement
Titanium (Ti)	≥ 5xC min	Prevents sensitization during welding

Technical Specifications

Parameter	Specification
Standard	ASTM A403 / ASME SA403
Grade	WP321H (Wrought Product, High-Temperature Service)
Dimensions	ASME B16.9: 1/2" to 48" (DN15–DN1200)
Angles	90°, 45°, 180° (LR/SR options)
Wall Thickness	Sch 5S, 10S, 40S, 80S, 160S
Surface Finish	Pickled & Passivated (ASTM A380)
Testing	Hydrostatic Test, PMI, RT (per EN 10204 3.1/3.2)

Applications

Engineered for Demanding Industrial Service

Petrochemical: Crackers, reformers, FCC units (resists sulfidation)
Chemical Processing: Acid reactors, nitric acid condensers
Power Generation: Boiler superheaters, steam lines (>500°C)
Pharmaceutical: USP/EP-compliant CIP/SIP systems
Nuclear: Secondary cooling circuits (ASME III qualified)
Pulp & Paper: Digester liquor handling

Stainless Steel Elbow A403 WP321H For High Temperature Piping Systems

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