Property	모넬 400	스테인레스 스틸 316	CuNi 90/10
인장강도 (MPa)	480 – 550	515 – 620	340 – 380
항복 강도 (MPa)	170 – 240	205 – 250	105 – 150
연장 (%)	35 – 40	40 – 50	35
경도 (HRB)	65 – 90	70 – 95	60 – 70

Despite its toughness, 모넬 400 retains excellent ductility and impact resistance, even in cryogenic conditions. This makes it ideal for high-pressure pipelines, offshore platforms, and heat exchanger systems.

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Fabrication and Welding Advantages

모넬 400 파이프 피팅 are easy to fabricate and weld using conventional techniques.

Fabrication Benefits:

• Easily hot- or cold-worked into complex shapes.

• Excellent weldability with matching filler metals (모넬 400 or ENiCu-7 electrodes).

• Maintains toughness after welding — no need for post-weld heat treatment.

대조적으로, stainless steels require strict welding controls to prevent sensitization, and copper-nickel alloys often need reinforcement due to their lower strength.

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Longevity and Life Cycle Cost

While Monel 400 fittings have a higher initial cost compared to stainless or copper-nickel, they offer significantly lower life cycle costs due to their long service life and reduced maintenance requirements.

Cost Advantage Breakdown:

• Longer Service Life: 모넬 400 resists pitting and erosion for decades in seawater pipelines.

• Reduced Maintenance: Fewer replacements and lower inspection frequency.

• No Coating Required: Naturally resists corrosion without protective coatings or cathodic protection.

For long-term projects such as desalination plants, offshore platforms, and refineries, the investment in SASAFLANGE Monel 400 파이프 피팅 ensures cost efficiency and operational reliability.

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Dimensional Stability and Pressure Handling

모넬 400 fittings exhibit superior dimensional stability under both static and dynamic loads.

• Withstands high-pressure conditions up to 6000 psi (41 MPa).

• Low coefficient of thermal expansion ensures tight seal integrity.

• Excellent fatigue resistance prevents cracking from vibration or pulsation.

대조적으로, copper-nickel fittings tend to deform under high pressure, and stainless steels may develop microcracks in chloride stress conditions.

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Applications Where Monel 400 Outperforms

Due to its exceptional combination of strength and corrosion resistance, SASAFLANGE Monel 400 파이프 피팅 are used across critical sectors:

1. Marine and Offshore Engineering

   • Seawater cooling systems

   • Ballast piping and condensers

   • Pump shafts and valves

2. Chemical and Petrochemical Processing

   • Acid-handling pipelines and reaction vessels

   • Heat exchangers and evaporators

3. 기름 & Gas Industry

   • Sour gas service lines

   • Refinery heat recovery systems

4. 발전

   • Steam generator and condensate systems

5. Desalination Plants

   • Brine discharge and high-salinity piping networks

In all these applications, Monel 400’s resistance to localized corrosion and its durability under fluctuating conditions make it the top-performing alloy.

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Comparative Summary: 모넬 400 대. Stainless Steel vs. Copper-Nickel