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UNS N06030/DIN W. NR. 2.4603 High-Performance Nickel Alloy Seamless Pipe for Harsh Chemicals

N06030 is a high chromium nickel-base alloy which has superior corrosion resistance over most other nickel and iron-base alloys in commercial phosphoric acid as well as many complex environments containing highly oxidizing acids such as nitric/hydrochloric,nitric/hydrofluoric and sulfuric acids.
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Overview


The UNS N06030/DIN W.NR. 2.4603 Seamless Pipe is a specialized solution designed for highly corrosive chemical environments, offering exceptional resistance to both oxidizing and reducing acids. Composed of nickel-chromium-molybdenum-tungsten alloy, this pipe ensures long-term reliability in aggressive media, ideal for chemical processing, waste treatment, and mining applications.


Features


Superior Corrosion Resistance:

Composition: Ni (45-55%), Cr (28-31%), Mo (4-6%), W (3-4%), providing resistance to sulfuric acid (H₂SO₄ 20-80%, 120°C) and hydrochloric acid (HCl ≤10%, 80°C).

Pitting resistance: PREN (Pitting Resistance Equivalent Number) ≥40, surpassing 904L stainless steel, with zero pitting in ASTM G48 Method B (6% FeCl₃, 50°C, 72 hours).

Mechanical Properties:

Tensile strength ≥650 MPa (annealed), yield strength ≥280 MPa, elongation ≥35%, with excellent ductility for cold bending (bend radius ≤3x wall thickness).

Temperature range: -200°C to +1100°C, suitable for cryogenic liquefaction and high-temperature acid distillation.

Manufacturing Standards:

Seamless cold-drawn process (ASTM B619, ASME SB-619), sizes: OD 8-250mm, wall thickness 1-15mm, with 100% helium leak testing (leak rate ≤1x10⁻⁹ mbar·L/s).

Surface finish: Electropolished (Ra ≤0.5μm) for critical fluid systems, reducing corrosion initiation points by 40%.


Application


Sulfuric Acid Production: Transports concentrated H₂SO₄ in alkylation units and fertilizer plants, outlasting carbon steel by 10x in similar conditions.

Waste Acid Recovery: Used in pickling lines for steel plants, resisting mixed acid (HNO₃ + HF) environments (HF ≤5%, 60°C).

Mining & Metallurgy: Supports leaching processes in nickel/cobalt extraction, enduring chloride-rich solutions (Cl⁻ ≤30,000ppm) and oxidizing agents (Fe⊃3;+ ≤10g/L).

Pharmaceutical Acid Handling: Transports high-purity acids in API synthesis, with FDA-compliant surface treatments (passivation to USP <788> standards).


UNS N10001 PIPE
UNS N10001 PIPE


UNS N10001 PIPE



UNS N10001 PIPE
UNS N10001 PIPE


UNS N10001 PIPE

Our pipe factory has 296 employees ,including 4 senior engineers,18 engineers and 38 professional technicians.

We can produces 30,000tons of austenitic steel and duplex steel pipes annually with 18 seamless  production lines and 3 perforation production lines.

Our pipe factory has been certified to the ISO9001:2015 quality management system and certified by various classification societies (such as BV, ABS,CCS,DNV/GL,TUV,LR,KR etc).


UNS N10001 PIPE


UNS N10001 PIPE


UNS N10001 PIPE


Why Choose Us


Weldability: The low carbon content of this material is a crucial factor that guarantees crack - free welding. When using the AWS A5.14 ERNiCr - 3 filler, it significantly improves the welding process. This not only ensures the quality of the welded joints but also leads to a substantial reduction in fabrication time. Specifically, for complex pipe networks, the fabrication time is cut down by 30%. This time - saving aspect can lead to faster project completion, lower labor costs, and increased overall efficiency in the manufacturing process.


Global Certification: This product holds several important international certifications. It has the NACE MR0103 certification, which is highly regarded in the corrosion - resistant industry. Additionally, it complies with PED 2014/68/EU, which is essential for products used in the European market, especially those related to pressure equipment. Moreover, it has the KTA 3201.1 certification specifically for nuclear applications. These certifications are a testament to the product's high - quality and compliance with international standards. For companies involved in international projects, having these certifications streamlines the compliance process. It means that they can use this product across different regions without having to worry about extensive additional testing or modifications to meet local regulations.


Inventory Availability: In terms of inventory, there are stock sizes available with an outer diameter (OD) ranging from 50 - 200mm. These stocked items are ready for immediate shipment, which is highly beneficial for customers with urgent needs. For large - scale chemical plants, the company also offers just - in - time delivery. This delivery method ensures that the required materials reach the plant exactly when they are needed, minimizing inventory holding costs for the plant while ensuring a smooth production process.


Chemical Composition

%

Ni

Cr

Fe

Mo

W

Co

C

Mn

Si

P

S

Cu

Nb+Ta

MIN

BALANCE

28.00

13.00

4.00

1.50







1.00

0.3

MAX

31.50

17.00

6.00

4.00

5.00

0.03

1.50

0.80

0.04

0.02

2.40

1.5


Specification

Physical Properties

Seamless pipe and tube

ASTM B 622

DENSITY

8.22g/cm3

MELTING RANGE

1370-1400℃


Specifications Of UNS N06030/DIN W. NR. 2.4603 Seamless Pipe

OD: 1mm-325mm

WALL THICKNESS:  0.2mm-20mm

Max Length:12m (Special specifications are available as required)


Production Processes

Seamless Pipe

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