What is Alloy 625 material?

Alloy 625 is an austenitic nickel- chromium-molybdenum-niobium alloy possessing a rare combination of outstanding corrosion resistance coupled with high strength from cryogenic temperatures to 1800°F (982°C).

Is Alloy 625 the same as Inconel?

Alloy 625 has excellent fatigue strength and stress – corrosion cracking resistance to chloride ions. INCONEL® 625 LCF is a variant of INCONEL® 625. LCF stands for Low Cycle Fatigue. This means that the alloy has improved cycle fatigue properties and better thermal fatigue resistance.

What is the chemical composition of Inconel 625?

This superalloy is composed mainly of nickel (58% min.)followed by chromium, and molybdenum, niobium, iron, tantalum, cobalt, and trace amounts of manganese, silicon, aluminium, and titanium. Inconel 625 also commonly goes by the names: Haynes 625, Altemp 625, Nickelvac 625, and Nicrofer 6020.

Is Inconel 625 a stainless steel?

Additionally, though the melting point of this particular type of Inconel is lower than that of 304 stainless steel, it has a higher operating temperature limit. … So, is Inconel Stronger Than Steel?

Alloy Inconel 625® 304 Stainless Steel
Tensile Strength 103-160 ksi (714-1,103 MPa) 73.2 ksi (505 MPa)

What kind of metal is 625?

nickel-chromium Description. Alloy 625 is a nickel-chromium-molybdenum alloy that is used for its high strength, high toughness and excellent corrosion resistance. The strength of alloy 625 is derived from the stiffening effect of molybdenum and niobium on its nickel-chromium matrix.

Is Inconel 625 heat treatable?

Depending on customer requirements, alloy 625 may also be supplied solution heat-treated at temperatures at or above 2000°F (1093°C), or mill annealed at temperatures below 1925°F (1052°C).

What is Inconel 625 used for?

INCONEL® alloy 625 (UNS N06625) has been widely used for over 50 years in the marine and petroleum industries for applications requiring high strength, fracture toughness, fabricability and resistance to corrosion.

Is Inconel 625 NACE compliant?

Sour service material manufactured with Inconel 625 (UNS N06625) has to comply with ANSI/NACE MR0175/ISO 15156. NACE MR0175 provides the metallurgical requirements for Inconel 625. … NACE MR0175 requires alloy 625 to be in the annealed condition.

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Is Inconel 625 magnetic?

What is Inconel 625? Inconel Alloy 625 is a non-magnetic, corrosion and oxidation resistant, nickel-chromium alloy. … Inconel 625 has tremendous resistance to a wide range of unusually severe corrosive environments including high-temperature effects such as oxidation and carburization.

What is the difference between Inconel 625 and 718?

Both 625 and 718 are nickel alloys, but their composition varies. Alloy 718 contains molybdenum, niobium and tantalum, aluminium and titanium. These are combined to create a strong, hardenable metal with a particularly high yield. By contrast, Alloy 625 combines nickel, chromium and molybdenum.

What is the hardness of Inconel 625?

Inconel 625

Alloy state Tensile strength Rm N/mm² Brinell hardness HB
625 760 ≤220

What is the difference between Hastelloy and Inconel?

Inconel® materials belong to a family of nickel/chromium alloys that are non-magnetic and take corrosion resistance to elevated temperatures. The Hastelloy® family of nickel/chromium/molybdenum alloys are ideal for use in highly aggressive chemical environments at elevated temperatures.

Is Inconel a super alloy?

Inconels are a class of nickel-chrome-based super alloys characterized by high corrosion resistance, oxidation resistance, strength at high temperatures, and creep resistance.

Will a magnet stick to Inconel?

INCONEL alloys should not exhibit magnetic properties … they are non-magnetic.

Is Inconel a titanium?

Inconel® is a material that is specifically optimized for some of the toughest use conditions to be found in manufacturing while Titanium is a chemical element with symbol Ti and atomic number 22. It is a lustrous transition metal with a silver color, low density, and high strength.

Is Inconel 625 corrosion resistant?

Inconel 625 (UNS N06625) is a type of nickel-chromium-molybdenum alloy with excellent corrosion resistance in a wide range of corrosive media, being especially resistant to pitting and crevice corrosion. … The results reveal that Inconel 625 is excellent in resist the corrosion attack in seawater.

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What is the difference between Inconel 600 and 625?

Chromium. Alloy 625 has a higher chromium content than Alloy 600. The chromium content is the main element of the alloy’s oxidation resistance. Therefore, Inconel 625 has better antioxidant capacity than Inconel 600.

Why is Monel good for shipbuilding?

Stronger than pure nickel, Monel alloys are resistant to corrosion by many aggressive agents, including rapidly flowing seawater. They can be fabricated readily by hot- and cold-working, machining, and welding.

How do you heat treat Inconel?

Two heat treatments are generally utilized for INCONEL alloy 718: •Solution anneal at 1700-1850°F followed by rapid cooling, usually in water, plus precipitation hardening at 1325°F for 8 hours, furnace cool to 1150°F, hold at 1150°F for a total aging time of 18 hours, followed by air cooling.

What is Inconel welding rod used for?

INCONEL Welding Electrode 112 is used for shielded-metal-arc welding of INCONEL alloy 625, INCOLOY alloy 825, INCOLOY alloy 25-6MO, and other molybdenum-contain- ing stainless steels. It is also used for surfacing of steel and for welding various corrosion- resistant alloys such as alloy 20.

Is Inconel valuable?

Even compared to stainless steel, Inconel® has an incredibly high tolerance for extreme heat, and doesn’t lose as much tensile strength at 2,000°F as most varieties of steel. However, Inconel® is an expensive material, one which is best reserved for the right use conditions where other materials won’t work as well.

Do you purge Inconel?

Milton Gravitt, Yes Inconel does need to be back purged for the root run (or otherwise protected i.e solar flux etc.) and most likely the first fill ,just like regular stainless steel does!

What P number is Inconel 625?


P42 SB127 400 Monel 400
P43 SB168 600 Inconel 600
P43 SB443 625 Inconel 625
P43 SB575 C276 Hastelloy C-276
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How hard is it to machine Inconel?

Inconel 718 is known to be among the most difficult-to-machine materials due to its special properties which cause the short tool life and severe surface damages.

Does Inconel rust?

Inconel alloys are durable, corrosion resistant, rust resistant and very sturdy. Inconel is a Special Metals Corporation registered trademark, with the name referring to certain super alloys of nickel and chromium.

Is there a stronger metal than titanium?

What Type of Metal Is Stronger Than Titanium? While titanium is one of the strongest pure metals, steel alloys are stronger. This is because a combination of metals is always stronger than a single metal. Carbon steel, for example, combines the strength of steel with the resilience of carbon.

Why is Inconel nonmagnetic?

The heavy nickel content in Inconel alloys is one of the main sources of the magnetic properties of the alloys. Pure nickel is magnetic, even at room temperature, but is combined with elements such as chromium and carbon when making Inconel alloys. which reduces the magnetic properties.

What is Inconel 600 material?

INCONEL® (nickel-chromium-iron) alloy 600 (UNS N06600/W.Nr. 2.4816) is a standard engineering material for applications which require resistance to corrosion and heat. The alloy also has excellent mechanical properties and presents the desirable combination of high strength and good workability.

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