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625(NS 336 UNSNO6625)

The 625 is a face-centered cubic lattice structure. When held at about 650°C for a sufficient period of time, carbon particles and unstable quaternary phases will precipitate and will convert to the stable Ni3(Nb, TI) orthorhombic lattice phase. After solid solution strengthening, the molybdenum and niobium components in the nickel-chromium matrix will improve the mechanical properties of the material, but the plasticity will be reduced.

Classification:

Product Details

Inconel 625(NS 336 UNSNO6625)
Chemical Composition	%	Ni	Cr		Fe	Mo	Nb		C	Mn	Si		S	P	AL		Ti	B
	Min.	Allowance	20		-	8.0	3.15		-	-	-		-	-	-		-	-
	Max.	Allowance	23		5	10	4.15		0.1	0.5	0.5		0.015	0.015	0.4		0.4	0.006
Physical Characteristics	Density				8.4g/cm3
	Melting point				1290-1350 ℃
Minimum values of the mechanical properties of alloys at room temperature	Typical mechanical properties			Tensile strength Rm N/m ㎡				Yield strength RP0.2 N/m ㎡				Elongation A5%				Brinell hardness HB
	solution treatment			830				414				30				≤ 290

Characteristics

1. It has excellent corrosion resistance to various corrosive media in oxidation and reduction environments;

2. Excellent resistance to pitting corrosion and crevice corrosion, and will not produce stress corrosion cracking caused by chloride;

3. Excellent resistance to inorganic acid corrosion, such as nitric acid, phosphoric acid, sulfuric acid, hydrochloric acid and sulfuric acid and hydrochloric acid mixed acid, etc;

4. Excellent resistance to various inorganic acid mixed solution corrosion ability;

5. When the temperature reaches 40°C, it can show good corrosion resistance in various concentrations of hydrochloric acid solution;

6. Good processability and weldability, no post-weld cracking sensitivity;

7. Manufacture certification of pressure vessels with wall temperatures in the range of 196- 450°C;

8. Certified by the American Society of Corrosion Engineers NACE standard (MR-01-75) to meet the highest standard grade VII for use in acid gas environments.

metallographic structure

Scope of application

1. Components of organic chemical processes containing chlorides, especially where acidifying catalysts are used;

2. Digesters and bleaching tanks for the manufacture of pulp and paper T industry;

3. The absorption tower, reheater, flue gas inlet baffle, fan (wet), agitator, deflector and flue in the flue gas desulfurization system;

4. For the manufacture of equipment and components used in acid gas environments;

5. Acetic acid and acetic anhydride reaction generator;

6. Sulfuric acid condenser.

Key words:

625(NS 336 UNSNO6625)

Inconel718 alloy

Inconel 601(UNS NO6601/W.Nr2.4851)