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Alloy 20

Material: Alloy 20, N08020, 2.4660, Carpenter 20

Alloy 20 stainless steel is a corrosion-resistant alloy with excellent mechanical properties. Alloy 20 offers exceptional corrosion resistance in acidic, chloride-rich environments and performs well in high-temperature applications. Alloy 20 stainless steel is also known by its UNS number, N08020, a globally recognized standard. JN Alloy 20's products include plates, bars, pipes, strips, and flange forgings.

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What Is Alloy 20?

Alloy 20 stainless steel offers excellent corrosion resistance, including excellent resistance to oxidizing and moderate reducing corrosion, as well as excellent resistance to stress corrosion cracking and good resistance to localized corrosion. Alloy 20 has excellent resistance to stress corrosion cracking and good resistance to localized corrosion in mixed reducing media. It is suitable for use in sulfuric acid environments and industrial equipment with sulfuric acid solutions containing halogen ions and metal ions. JN Alloy 20's main products include plates, bars, pipes, strips, and flange forgings.

At 33% nickel, Alloy 20 has practical immunity to chloride stress corrosion cracking. This alloy is often chosen to solve SCC(stress corrosion cracking) problems, which may occur with 316L stainless.

Alloy 20 Chemical Composition

Alloy 20 is primarily composed of nickel, iron, and chromium, with small amounts of carbon, manganese, silicon, molybdenum, and copper. This chemical composition makes Alloy 20 extremely corrosion-resistant in harsh environments such as strong acids, strong bases, and chlorides.

Composition	Value
Ni	32.0-38.0
Cr	19.0-21.0
Cu	3.0-4.0
Mn	≤2.0
Mo	2.0-3.0
Si	≤1.0
C	≤0.07
P	≤0.045
S	≤0.035
Fe	Remain
Ni+Ti	8-1.0

Alloy 20 Mechanical Properties

Mechanical properties	Tensile, min, ksi[MPa]	Yield, min, ksi[MPa]	Elongation, %(min)
Alloy 20	80[551]	35[241]	30

Stainless Steel Alloy 20 Physical Properties

Density: 8.06 g/cm³.

Melting point: 1440-1450°C (2624-2642°F).

Thermal conductivity: 10.8 W/(m·K).

Coefficient of thermal expansion: 14.0 µm/m·K.

Electrical conductivity: 1.27 × 10^6 S/m.

Alloy 20 Standards And Prodcuts

Product	Standards	Show
Alloy 20 Pipe & Tube SMLS	ASTM B729
Alloy 20 Welded Pipe	ASTM B474, ASTM B464
Alloy 20 Sheet Plate	ASTM B463
Alloy 20 Bars	ASTM B472, ASTM B473
Alloy 20 Forgings	ASTM B564
Alloy 20 Fittings	ASTM B366

Alloy 20 Equivalent Grades

STANDARD	WERKSTOFF NR.	UNS	AFNOR	EN
Alloy 20	2.4660	N08020	Z2NCUD31-20AZ	NiCr20CuMo

Alloy 20 Applications

Synthetic rubber manufacturing equipment
Processing of pharmaceuticals, plastics and organic and heavy chemicals
Tanks, piping, heat exchangers, pumps, valves, and other process equipment
Acid cleaning and pickling equipment
Chemical process piping, reactor vessels
Bubble caps
Petrochemical process equipment
Food and dye production

Alloy 20 Material Standards

ASTM B474.pdf

ASTM B464.PDF

ASTM B463.pdf

ASTM B472.pdf

ASTM B473.pdf

ASTM B564.pdf

ASTM B366.pdf

Our Products

JN Alloy Products

Quality Control

Our Quality Management System has beenverified with ISO9001:2008 to guarantee allproduction processes are well controlled,so that we can make sure all materials are traceable and well inspected; only the best quality is delivered to our clients.

Non-Destructive Tests	Destructive Tests
Ultrasonic Test	Metallographic Examination
Radiographic Examination	Intergranular Corrosion Test
PMI Test	Grain Size Test
Penetration Test	Mechanical Property Test
Dimension Examination	Tension Test
Surface Examination	Bending Test
Hardness Examination	Impact Test

Testing Equiptments

All materials are tested by destructive and non-destructive testing methods, which are performed at different stages in the production process.

Packing

Our team adopts professional packaging methods to ensure that the products reach our clients in their best form, without getting affected by the adversities of the environment.

If by any chance (however small it may be), the products fail to satisfy the customers, we act on our product replacement scheme to ensure that they receive better.

Stock System

We have a large stock of pipes / flanges / BW fittings / forged fittings. (Stainless Steel 304 316,etc. )
No MOQs
Fast Delivery

Our Service

Pre-sales service—Professional and comprehensive pre-sales service guides and directs your purchase.

Assist with material (standard, grade) selection.
Assure metallurgical properties meet requirements.
Integrates superior resources and evaluates the credit of the mills.
Providethecustomerswithtiming,specificandcompetitivequotations.
Provides small and medium-sized customers with customized financial services.

On-sale service—Meticulous and scientific on-sales service makes your choice more worry-saving and reliable.

Review the contact; confirm or amend the uncertainties or the issues that have to be fixed through negotiations by both parties.
Assign production orders and arrange production as required.
Supervise the production process at the scene and satisfy customers' individual requirements.
Monitor the production schedule on a real-time basis to ensure punctual delivery.
Inspect the stock conditions at the port to avoid the cargo getting heavily rusty.
Integrate different customers' cargos and supply one-stop CFR services, control the transportation quality, and keep watch on the cargo for the customers.

After-sales service—Thoughtful and prompt after-sales service provides support and guarantees for your benefits.

Allow quality claims within 45 days after the cargo arrives at the destination port against a third-party inspection report.
Any small quality problems can be solved at your local place; we can make compensation in the next orders.
If there are any big quality problems, we will reproduce it for you or send money back to you.