Inconel X-750 Springs - Corrosion Resistance

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Inconel X-750 Springs

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Corrosion Resistance

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Inconel X-750 Springs - Corrosion Resistance

Inconel Alloy X-750 possesses excellent resistance to chloride ion stress-corrosion cracking. It exhibits satisfactory resistance to numerous oxidizing environments. The alloy has similar corrosion resistance to Inconel Alloy 600 in many media.

In hot corrosion tests for automotive applications, weight loss after exposure for 100 hours in 90% Na2SO4 + 10% NaCl mixture in air was about 5%. Samples precoated with sodium chloride (by dipping in a hot saturated salt solution), suspended in a furnace at 1700°F and exposed for 100 hr to a moving gas stream of air containing 1% SO2 exhibited a corrosion penetration of approximately 0.007 in.

An interesting feature of this alloy is its high resistance to chloride-ion stress-corrosion cracking even in the fully precipitation-hardened condition. Standard U-bend specimens of precipitation-hardened material (hardness, 33 Rc) showed no signs of cracking when exposed to boiling 42% magnesium chloride for 30 days.

Note: This 4-level rating scale is intended for comparative purposes only. Corrosion testing is recommended; factors which affect corrosion resistance include temperature, concentration, pH, impurities, aeration, velocity, crevices, deposits, metallurgical condition, stress, surface finish and dissimilar metal contact.

EnvironmentCorrosion Resistance
Nitric AcidGood
Sulfuric Acid Moderate
Phosphoric Acid Moderate
Acetic Acid Moderate
Sodium Hydroxide Good
Salt Spray (NaCl) Good
Sea Water Moderate
Sour Oil/Gas Moderate
Humidity Excellent
Optimum Spring manufactures high-quality custom INCONEL alloy X-750 wire springs
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Phone: +1 (904) 567-5999
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Optimum Spring Solutions

We Specialize in the following Spring Materials:

Inconel X-750

Inconel 718

Inconel 600



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