ASTM B564 and ASME SB564 | UNS N04400 and N05500 | Slip-On, Blind, Weld Neck and Threaded Monel Flanges Manufacturer, Supplier & Exporter in Mumbai, India
Amardeep Steel has manufactured and exported Monel Flanges since 1984. Our Monel 400 (UNS N04400) and Monel K500 (UNS N05500) flanges are forged to ASTM B564 and ASME SB564 and machined to ANSI B16.5, B16.47, and DIN standards. Available in all facing types including Raised Face (RF), Flat Face (FF), and Ring Type Joint (RTJ) from 1/8 inch NB to 48 inch NB in pressure classes 150 to 2500. All flanges are supplied with EN10204 Type 3.1 Mill Test Certificates. We export to 50 plus countries across Europe, the Middle East, and Southeast Asia.
Need Monel Flanges to exact ASTM B564 specifications?
Our technical team responds within 24 hours. Contact us for pricing, lead times, and mill test certificates.
Request a QuoteWhat are Monel Flanges?
Monel flanges are high-performance nickel-copper alloy components known for their excellent corrosion resistance and ability to withstand high temperatures. These flanges are primarily used to connect pipes, valves, and other equipment in piping systems, ensuring secure and leak-proof joints.
Manufactured from alloys such as Monel 400 and Monel K500, these flanges offer good ductility, strength, and durability even in harsh environments. Due to their resistance to seawater, chemicals, and extreme conditions, Monel flanges are widely used in heavy-duty industrial applications.
They are suitable for industries that require reliable performance, including marine, chemical processing, and oil & gas sectors, where long service life and corrosion resistance are critical.
Monel Flanges Specification
|
Parameter |
Details |
|---|---|
|
Size |
1/8 inch NB to 48 inch NB |
|
Range (DN) |
DN15 to DN300 per ANSI B16.5; up to DN1200 per ANSI B16.47 Series A and B |
|
Standards |
ANSI, ASME, BS, DIN, EN |
|
Specifications |
ASTM B564 / ASME SB564 / B160 / B472 |
|
Pressure Class |
150#, 300#, 600#, 900#, 1500#, 2500#, PN6 to PN64 |
|
Flange Face Types |
Flat Face (FF), Raised Face (RF), Ring Type Joint (RTJ) |
|
Dimensions |
ANSI/ASME B16.5, B16.47 Series A and B, B16.48 |
|
DIN Standards |
DIN 2527, 2566, 2573, 2576, 2641 to 2673 |
|
JIS Standards |
JIS B2220 (5K to 20K) |
|
BS Standards |
BS4504, BS10 Tables D, E, F, H |
|
Grades |
Monel 400 (UNS N04400), Monel K500 (UNS N05500) |
Material Equivalents of Monal Flanges
|
Grade |
Werkstoff Nr. |
UNS |
JIS |
AFNOR |
BS |
EN |
|---|---|---|---|---|---|---|
|
Monel 400 |
2.4360 |
N04400 |
NW 4400 |
NU-30M |
NA 13 |
NiCu30Fe |
|
Monel K500 |
2.4375 |
N05500 |
N/A |
N/A |
N/A |
N/A |
Chemical Composition of Monel 400 and K500 Flanges
|
Element |
Ni (%) |
Cu (%) |
Fe max (%) |
Mn max (%) |
C max (%) |
|---|---|---|---|---|---|
|
Monel 400 |
63 min |
28 to 34 |
2.5 |
2.0 |
0.30 |
|
Monel K500 |
63 to 70 |
27 to 33 |
2.0 |
1.5 |
0.25 |
Mechanical Properties of Monel 400 and K500 Flanges
|
Property |
Monel 400 |
Monel K500 |
|---|---|---|
|
Tensile Strength (min) |
550 MPa (80 ksi) |
896 MPa (130 ksi) |
|
Yield Strength (min) |
240 MPa (35 ksi) |
620 MPa (90 ksi) |
|
Elongation (min) |
35% |
20% |
|
Hardness (Brinell) |
110 to 149 HB |
175 to 250 HB |
|
Max Service Temp |
550 degrees C (1022 degrees F) |
480 degrees C (896 degrees F) |
|
Melting Point |
1350 degrees C |
1350 degrees C |
Types of ASTM B564 Monel Flanges
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Monel Flange Face Types Available
|
Face Type |
Code |
When to Use |
|---|---|---|
|
Flat Face |
FF |
Full-bore contact across the entire face. Use with cast iron or bronze equipment to avoid damage from raised face contact. |
|
Raised Face |
RF |
Most common face type. Concentrates the bolt load on a smaller gasket area, improving sealing efficiency. Standard for ANSI B16.5 Class 150 to 2500. |
|
Ring Type Joint |
RTJ |
Metal-to-metal seal using a soft metallic ring gasket. Specified for Class 600 and above, high-pressure and high-temperature service. |
Monel 400 vs Monel K500 Flanges: Which Grade to Choose?
|
Criteria |
Monel 400 (UNS N04400) |
Monel K500 (UNS N05500) |
|---|---|---|
|
Strength |
Moderate (550 MPa tensile) |
High (896 MPa tensile, approx 3x Monel 400 yield strength) |
|
Hardening |
Solid-solution strengthened. Can be cold-worked. |
Precipitation-hardened (age-hardenable). Requires post-weld age-hardening treatment. |
|
Corrosion Resistance |
Excellent in seawater, acids, alkalis and HF acid service. |
Same corrosion resistance as Monel 400 with significantly higher strength. |
|
Magnetic Properties |
Weakly magnetic when cold-worked |
Non-magnetic. Suitable for degaussing equipment and sensitive instrumentation. |
|
Typical Applications |
Seawater piping, chemical process piping, HF alkylation units, heat exchangers, marine hardware. |
Offshore propeller shafts, pump impellers, oil drilling tools, turbine blades, high-stress marine fittings. |
|
Relative Cost |
Lower cost. Most economical choice for general corrosive service. |
Higher cost. Justified where both high mechanical load and corrosion resistance are required simultaneously. |
Rule of thumb: Use Monel 400 for static, corrosive piping service. Specify Monel K500 when mechanical loads, fatigue, or erosion are also factors.
Applications of Monel Flanges
Monel 400 and K500 flanges are specified in environments where standard stainless steel fails due to corrosion, stress, or extreme temperature.
- Chemical Processing: Handling hydrofluoric acid, sulfuric acid, and chlorinated solvents in alkylation units and reactors. Monel 400 is the standard material for HF alkylation equipment because it resists the acid at all concentrations and temperatures in de-aerated conditions.
- Oil and Gas / Offshore: Used in subsea pipelines, wellhead equipment, and seawater cooling systems where chloride stress corrosion cracking (SCC) is a risk with stainless steel.
- Marine Engineering: Pump shafts, propeller hubs, and seawater piping where continuous saltwater exposure demands superior corrosion resistance. Monel K500 is preferred for rotating and high-load marine components.
- Power Generation: Heat exchangers, condenser tube sheets, and steam generator components where long service life under thermal cycling is required.
- Pharmaceutical and Food Processing: Non-contaminating in caustic and mild acid cleaning solutions. Suitable where product purity requirements prohibit the use of standard grades.
- Aerospace and Defence: Monel K500 flanges used where high strength, non-magnetic properties, and corrosion resistance are all required simultaneously.
- Pulp and Paper Industry: Resistance to the bleaching chemicals and acidic process streams used in paper manufacturing.
- Petrochemical Equipment: Specified for reactors, columns, and piping systems handling aggressive organic and inorganic process streams.
Manufacturing Standards
|
Standard |
Scope |
|---|---|
|
ANSI / ASME B16.5 |
Pipe flanges and flanged fittings from NPS 1/2 inch to NPS 24 inch. Class 150 to 2500. |
|
ANSI / ASME B16.47 |
Large diameter steel flanges from NPS 26 inch to NPS 60 inch. Series A and B. |
|
ANSI / ASME B16.36 |
Orifice flanges from NPS 2 inch to NPS 24 inch. |
|
ANSI / ASME B16.48 |
Steel line blanks from NPS 1/2 inch to NPS 24 inch. |
|
BS 4504 |
Flanges for pipes, valves and fittings per PN series. |
|
BS 10 |
Flanges per Tables D, E, F and H. |
|
DIN Standards |
DIN 2527, 2566, 2573, 2576, 2641 to 2673 covering face types, pressure ratings and dimensions for European markets. |
Key Properties and Advantages of Monel Flanges
- Excellent resistance to seawater, brackish water, and marine environments
- Superior resistance to hydrofluoric acid, sulfuric acid, and hydrochloric acid in reducing conditions
- Resistance to chloride stress corrosion cracking (SCC), a common failure mode for stainless steel in marine service
- High tensile strength maintained from cryogenic temperatures up to 550 degrees C
- Good weldability using standard nickel alloy welding procedures (GTAW, GMAW, SMAW)
- Non-magnetic properties in Monel K500 suitable for sensitive instrumentation and degaussing equipment
- Long service life with minimal maintenance in corrosive industrial environments
Testing and Quality Assurance
All Amardeep Steel Monel Flanges undergo mandatory inspection before dispatch. Our quality assurance process covers:
|
Test |
Purpose |
|---|---|
|
Chemical Analysis |
Verifies alloy composition meets ASTM B564 requirements for Monel 400 and K500. |
|
Positive Material Identification (PMI) |
On-site XRF verification of material grade before dispatch. |
|
Mechanical Testing |
Tensile, yield strength, and elongation testing per ASTM standards. |
|
Hardness Test |
Brinell hardness testing to confirm heat treatment condition. |
|
Hydrostatic Pressure Test |
Leak testing under pressure to confirm integrity of the flange body. |
|
Dimensional Inspection |
Full dimensional check against ANSI B16.5 or B16.47 drawings. |
|
Flattening and Macro Examination |
Checks internal material soundness and forging quality. |
|
Pitting Resistance Test |
ASTM G48 or equivalent for verification of corrosion resistance in aggressive media. |
All products are supplied with EN10204 Type 3.1 Mill Test Certificates as standard. Type 3.2 third-party witnessed certification is available on request. Additional documentation including QAP, radiography test reports, and third-party inspection reports can be arranged.
Packaging and Delivery
Monel Flanges are packed in wooden boxes, crates, or on pallets with protective wrapping to prevent surface damage and corrosion during transit. Each flange is individually protected with plastic end caps and rust-inhibitor paper. Export packing complies with ISPM 15 phytosanitary regulations for wooden packaging material. Timely delivery and secure logistics are maintained for both domestic and international shipments.
Frequently Asked Questions about Monel Flanges
What is the maximum temperature for Monel 400 Flanges?
Monel 400 flanges maintain full mechanical integrity up to 550 degrees C (1022 degrees F). Above this temperature rapid oxidation occurs and the material is not recommended for prolonged service. For temperatures above 480 degrees C, consult your engineering team regarding the specific process conditions and cyclic loading requirements.
Can Monel Flanges be used with hydrofluoric acid?
Yes. Monel 400 is one of the few alloys that resists hydrofluoric acid across all concentrations and temperatures in de-aerated conditions. It is the standard material for HF alkylation unit flanges. Note: Monel 400 is not recommended for use in aerated hydrofluoric acid solutions or in the presence of nitric acid and ammonia, which rapidly attack the alloy due to its copper chemistry.
What is the difference between ASTM B564 and ASME SB564?
Both are technically identical specifications. ASTM B564 is issued by the American Society for Testing and Materials. ASME SB564 is the ASME Boiler and Pressure Vessel Code adoption of the same standard. Both cover nickel alloy forgings including Monel 400 (UNS N04400) and Monel K500 (UNS N05500). Either designation may be specified and will be met by the same material.
Do you supply Mill Test Certificates for Monel Flanges?
Yes. All Amardeep Steel Monel Flanges are supplied with EN10204 Type 3.1 Mill Test Certificates as standard. These certificates confirm chemical composition and mechanical properties and are issued by the manufacturer. Type 3.2 third-party witnessed certification is available on request for projects requiring independent verification.
What is the lead time for Monel Flanges?
Standard sizes in Class 150 to 600 are generally available ex-stock in Mumbai. Non-standard sizes and Class 900 to 2500 carry a typical production lead time of 2 to 4 weeks. Lead times vary by size and quantity. Contact our sales team for a definitive lead time for your specific requirement.
What is the difference between a Monel Slip-On Flange and a Monel Weld Neck Flange?
A Slip-On Flange slides over the pipe end and is fillet-welded inside and outside. It is easier and quicker to install and is cost-effective for low-to-moderate pressure service. A Weld Neck Flange has an integral tapered hub that is butt-welded to the pipe. This design provides superior stress distribution, higher fatigue resistance, and is the preferred choice for high-pressure, high-temperature, and cyclic service applications.
Amardeep Steel has exported Monel Flanges to 50 plus countries since 1984.
Contact us for pricing, lead times, and mill test certificates. ISO 9001 certified. EN10204 3.1 MTC supplied as standard.
Get an Instant Quote | Email: sales@amardeepsteel.com
Monel Flange Exporters: Worldwide Supply
Amardeep Steel exports Monel Flanges to customers across all major industrial regions.
- Middle East: UAE, Saudi Arabia, Qatar, Oman, Bahrain, Kuwait, Iran, Iraq
- Europe: UK, Germany, Italy, Netherlands, France, Spain, Norway, Sweden, Poland
- Americas: USA, Canada, Brazil, Mexico, Argentina, Chile, Colombia
- Asia Pacific: Singapore, Malaysia, Australia, South Korea, Japan, Indonesia, Thailand, Vietnam
- South Asia and Africa: Bangladesh, Sri Lanka, South Africa, Nigeria, Egypt, Kenya
For country-specific delivery timelines, freight options, and export documentation, please contact our export team directly.
