ASTM B247 B221 Aluminum 1060 Weld Neck Flange | ASME B16.5 EN AW 1060 WN Flange Manufacturer

ASTM B247 and ASTM B221 Aluminum 1060 Weld Neck Flanges are lightweight, corrosion-resistant forged or machined flanges manufactured from commercially pure aluminum alloy 1060 (UNS A91060). Designed in accordance with ASME B16.5, these weld neck flanges provide reliable performance in low-pressure piping systems, chemical processing plants, air separation units, water treatment facilities, and food processing applications.

Manufactured from high-purity EN AW 1060 aluminum with a minimum aluminum content of 99.6%, Aluminum 1060 weld neck flanges offer excellent corrosion resistance, outstanding weldability, high thermal conductivity, and superior formability.

We are a professional manufacturer and exporter of Aluminum 1060 Weld Neck Flanges, Slip-On Flanges, Blind Flanges, Socket Weld Flanges, and custom aluminum flanges in China.

What is an Aluminum 1060 Weld Neck Flange?

An Aluminum 1060 Weld Neck Flange (WN Flange) is a butt-weld flange featuring a long tapered hub that provides smooth stress distribution between the flange and pipe.

Compared with slip-on flanges, weld neck flanges offer:

Higher structural integrity
Better fatigue resistance
Reduced stress concentration
Improved flow characteristics
Superior performance under cyclic loading

Because of these advantages, Aluminum 1060 weld neck flanges are widely used in process piping systems requiring lightweight and corrosion-resistant materials.

Aluminum 1060 Material Overview

Aluminum 1060 belongs to the 1000-series commercially pure aluminum family.

Key Characteristics

Minimum 99.6% aluminum content
Excellent atmospheric corrosion resistance
High thermal conductivity
High electrical conductivity
Excellent weldability
Good cold and hot forming properties
Lightweight construction

Unlike high-strength aluminum alloys, Aluminum 1060 is primarily selected for corrosion resistance and conductivity rather than mechanical strength.

Applicable Standards

Flange Standards

ASME B16.5
EN 1092-1
DIN Flange Standards
MSS SP-44

Material Standards

ASTM B247
ASTM B221
ASTM B209
ASTM B241
ASTM B483
EN 755
EN 573

Chemical Composition of Aluminum 1060

Element	Content (%)
Aluminum (Al)	≥ 99.60
Silicon (Si)	≤ 0.25
Iron (Fe)	≤ 0.35
Copper (Cu)	≤ 0.05
Manganese (Mn)	≤ 0.03
Magnesium (Mg)	≤ 0.03
Zinc (Zn)	≤ 0.05
Titanium (Ti)	≤ 0.03

Mechanical Properties

Property	Value
Tensile Strength	60 – 95 MPa
Yield Strength	15 – 35 MPa
Elongation	≥ 25%
Density	2.70 g/cm³
Thermal Conductivity	230 W/m·K
Electrical Conductivity	Excellent

Aluminum 1060 Weld Neck Flange Specifications

Item	Specification
Product	Aluminum 1060 Weld Neck Flange
Material	EN AW 1060
UNS Number	A91060
Standard	ASME B16.5
Flange Type	Weld Neck (WN)
Pressure Class	Class 150 / 300
Size Range	1/2″ – 24″
Facing	RF, FF
Manufacturing	Machined / Forged
Surface	Mill Finish
Certification	EN10204 3.1

Available Aluminum Flange Types

We manufacture:

Aluminum 1060 Weld Neck Flange
Aluminum 1060 Slip-On Flange
Aluminum 1060 Blind Flange
Aluminum 1060 Socket Weld Flange
Aluminum 1060 Lap Joint Flange
Aluminum 1060 Threaded Flange
Aluminum 1060 Plate Flange

Advantages of Aluminum 1060 Weld Neck Flanges

Excellent Corrosion Resistance

Aluminum 1060 provides outstanding resistance to atmospheric exposure, fresh water, and many industrial chemicals.

Lightweight Design

Weight is approximately one-third that of carbon steel, reducing installation and transportation costs.

Excellent Weldability

Suitable for GTAW (TIG), MIG, and other aluminum welding processes.

High Thermal Conductivity

Ideal for heat transfer systems, cooling equipment, and air separation units.

Cost-Effective Solution

Compared with higher alloy grades, Aluminum 1060 offers an economical choice for non-critical pressure systems.

Applications

Air Separation Plants

Widely used in oxygen and nitrogen production systems.

Chemical Processing

Corrosion-resistant piping systems handling mild chemicals and process fluids.

Water Treatment Facilities

Lightweight piping and flange systems for water distribution and treatment.

HVAC Systems

Cooling water systems, ventilation systems, and thermal transfer equipment.

Food Processing Industry

Non-toxic and corrosion-resistant material suitable for sanitary service.

Electrical Industry

Used in conductor systems and electrical equipment requiring high conductivity.

Inspection & Testing

All Aluminum 1060 weld neck flanges can be supplied with:

Chemical Analysis
Mechanical Testing
PMI Verification
Dimensional Inspection
Visual Inspection
Surface Examination

Third-party inspection available:

Material certificates:

EN 10204 3.1
EN 10204 3.2

Aluminum 1060 vs Aluminum 6061 Flange

Property	Aluminum 1060	Aluminum 6061-T6
Corrosion Resistance	Excellent	Very Good
Weldability	Excellent	Excellent
Strength	Lower	Higher
Conductivity	Higher	Moderate
Cost	Lower	Higher
Typical Use	Chemical & Electrical	Structural & Marine

FAQ

What is Aluminum 1060 Weld Neck Flange?

It is a butt-weld flange manufactured from commercially pure Aluminum 1060 and designed according to ASME B16.5 standards.

Is Aluminum 1060 suitable for chemical service?

Yes. Aluminum 1060 offers excellent corrosion resistance in many chemical and industrial environments.

What standards apply to Aluminum 1060 flanges?

Common standards include ASTM B247, ASTM B221, ASME B16.5, EN 1092-1, and DIN flange standards.

Can Aluminum 1060 weld neck flanges be supplied with EN10204 3.1 certification?

Yes. Full material traceability and EN10204 3.1 certificates are available upon request.

What industries use Aluminum 1060 flanges?

Chemical processing, air separation, water treatment, HVAC, food processing, and electrical industries.

ASTM B247 B221 Aluminum 1060 Weld Neck Flange ASME B16.5

Published by ADMIN on

ASTM B247 B221 Aluminum 1060 Weld Neck Flange | ASME B16.5 EN AW 1060 WN Flange Manufacturer

What is an Aluminum 1060 Weld Neck Flange?