NS3103、NS313

Overview of NS3103 (NS313) corrosion-resistant alloy

NS3103 alloy is a nickel-based alloy that is resistant to corrosion, high temperature oxidation, and has good thermal strength. The chromium content of the alloy is high, so it has good corrosion resistance in oxidizing acid media; the alloy contains high chromium content, and there is also aluminum. Therefore, the alloy has better oxidation resistance and vulcanization resistance. This alloy has a stable austenite structure in the solid solution state, and at the same time there are small amounts of carbides and nitrides dispersed on the substrate.

The alloy has good oxidation resistance and corrosion resistance, so it is mainly used in heating equipment, chemical industry, environmental pollution control, aviation, aerospace and power industry. For example: manufacturing annealing, carburizing, nitriding and other heat treatment equipment and components; radiant tubes, sleeves, flame shields, gas nozzles, resistance heating elements, resistance wire sleeves for industrial furnaces; condenser tubes for chemical industry, nitric acid Some equipment parts in production. The main products of alloys are plate, pipe, wire, strip, bar, forging and other products.

An important property of NS3103 (NS313) stainless steel pipe is its ability to resist oxidation at temperatures up to 1180 ° C. Even under very severe conditions, such as heating and cooling cycles, 601 can form a dense oxide film and get a high resistance to spalling. 601 has good resistance to carbonization. Due to its high chromium and aluminum content, 601 has good oxidation resistance in high-temperature sulfur-containing atmospheres. A

 

Chemical composition of NS3103 (NS313) corrosion-resistant alloy

%	Ni	Cr	C	Mn	Si	Cu	Al	p
Min.	58	21					1.0
Max.	63	25	0.1	1.0	0.5	1.0	1.7	0.015

 

NS3103 (NS313) corrosion resistance alloy physical properties:

Density 8.1 g / cm3

Melting point 1320-1370 ℃

 

Mechanical properties of NS3103 (NS313) corrosion-resistant alloy at room temperature:

Tensile strength Rm N / mm2 550-790

Yield strength RP0.2N / mm2 205-415

Elongation A5% 70-40

Brinell hardness HB-≤220

 

NS3103 (NS313) nickel-based seamless pipes have the following characteristics:

1. Excellent oxidation resistance at high temperature

2. Very good carbonation resistance

3. Good anti-oxidation sulfur-containing atmosphere

4. Has good mechanical properties at room temperature and high temperature

5. Good resistance to stress corrosion cracking due to the control of carbon content and grain size,

6. With high creep rupture strength, 601 is recommended in the field above 500 ℃ A

 

NS3103 (NS313) corrosion-resistant alloy application scope Application areas are:

1. Pallets, baskets and jigs used in heat treatment plants.

2. Wire strand annealing and radiant tube, high speed gas burner, wire mesh belt in industrial furnace

3. Isolation tank in ammonia reforming and catalytic support grid in nitric acid manufacturing.

4. Exhaust system components

5. Combustion chamber of solid waste incinerator

6. Pipe support and soot handling components

7. Components of exhaust gas detoxification system

8. Oxygen reheater