01
Monel K-500 Round Bar
Solid stock from 6 to 500 mm feeds shafts, stems, and machined fittings.
View Monel K-500 Round Bar →Monel K-500 Bar and Rod
Age-hardened nickel-copper bar and rod that roughly triples Monel 400 yield strength for shafts, fasteners, and downhole tools.
Al and Ti on Every Record
First, the certificate prints both age-hardening elements per heat, so the aging response is documented rather than assumed.
NACE Hardness Band
Because sour-gas service caps hardness at 35 HRC, aged bar is tested against the ordered band before release.
Non-Magnetic Stock
Moreover, low permeability survives machining, which keeps downhole survey instruments honest.
PRODUCT OVERVIEW
About Monel K-500 Bar and Rod
Monel K-500 bar and rod carry seawater duty into parts that Monel 400 lacks the strength to hold. Stock carries the UNS N05500 balance, an age-hardenable nickel-copper alloy with aluminium and titanium as the hardening additions. Therefore aging, not cold work, sets the strength.
Sections follow ASTM B865 and ASME SB865 in annealed, age-hardened, and cold-drawn conditions. Hence the ordered condition decides both the price and the incoming test plan.
The Monel K-500 page files the full property set for this grade, while Monel 400 covers the solid-solution base. Where sour-gas hardness caps apply, we add NACE MR0175 evidence to the release file.
PRODUCT FEATURES
Key Features of Monel K-500 Bar and Rod
Monel K-500 bar and rod takes the UNS N05500 balance and adds aluminium and titanium, so an aging cycle lifts yield strength to about three times the Monel 400 level. Supply runs to ASTM B865 in annealed, age-hardened, and cold-drawn conditions, with NACE hardness control and EN 10204 3.1 heat records on request. Marine shafts, high-strength fasteners, and non-magnetic downhole tools are the usual destinations.
Monel K-500
Aged Yield Around Triple
Aluminium and titanium precipitates lift yield near 100 ksi, roughly three times the Monel 400 level, without plating or cladding.
01
Seawater Strength Together
Also, shaft and fastener surfaces keep their film in flowing seawater while carrying design loads.
02
Reducing-Acid Reach
Besides, HF and other non-oxidizing streams stay within reach under controlled conditions.
03
Essentially Non-Magnetic
Permeability stays low at ambient temperature, so survey tools read formation rather than the collar.
04
Fatigue and Galling Resistance
Hardened bar resists cyclic loads and thread galling in stems, shafts, and fasteners.
05
Cryogenic Toughness
No ductile-brittle transition appears, so strength and ductility survive deep-cold service.
06
Aged-Condition Caution
However, some media make aged stock more prone to stress corrosion cracking, so we review HF, mercury, and sour duty with you.
07
Heat-Treat Discipline
Finally, solution treatment plus a controlled aging cycle lands hardness where the order asks.
08
WHY CHOOSE US
Why Choose Monel K-500
K-500 orders live or die on the aging route. Because condition decides strength, hardness, and document scope together, we settle it at quotation rather than after cutting.
01
Condition Review at Quotation
We confirm annealed, age-hardened, or cold-drawn delivery against your duty before we price the bar.
02
Aging Route on Record
Then, the release file names the aging cycle per heat, so your incoming checks compare like with like.
03
NACE-Ready Evidence
Equally, where sour gas applies, we add per-heat hardness data that satisfies MR0175 review.
04
Quotes Built to Audit
Finally, price, condition, hardness band, and documents appear in one reply.
MANUFACTURING PROCESS
Reliable Production For Critical Applications
Nickel and copper melt with aluminium and titanium into the UNS N05500 balance. Then solution treatment and a controlled aging cycle build the strength. Because the aging route is part of the order, test results trace to it.
01
Charge Weighing
We weigh nickel and copper to the N05500 window, and aluminium and titanium join for the hardening response.
02
Melting
Electric furnace practice melts the charge, and slag controls keep gas pickup and oxides down.
03
Ingot Casting
Next, casting controls limit segregation, and cropped ingots feed the first forging pass.
04
Hot Working
Forging and rolling break down the ingots, and each pass tightens the wrought structure.
05
Solution Treatment
Rapid quenching from about 980 °C holds aluminium and titanium in solution before aging.
06
Precipitation Aging
We hold stock near 595 °C for 8 to 16 hours, then furnace-cool slowly toward 480 °C.
07
Cold Finishing
Afterwards, drawing, peeling, or grinding lands final diameter and surface.
08
Release Testing
Finally, we check chemistry, hardness, tensile, and dimensions against the purchase specification.
Manufacturing Facility
MANUFACTURING CAPABILITY
Advanced Production For Nickel Alloy Products
Standard and custom diameters both leave this route, and we fix the aging plan before melting starts. Therefore the figures below show the capacity behind that commitment. Mixed-condition production runs as a single campaign.
20,000+ m²
Factory Area
Melting, aging, drawing, and inspection workshops stand under one roof.
50+
Production Machines
Hot-working, cold-finishing, and inspection equipment serves the bar line.
600 Tons
Monthly Capacity
The plant ships nickel-copper and nickel alloy bar in stock and custom sizes.
30+
Technical Engineers
Metallurgists fix condition, tolerance, and document scope during quotation.
3
Age-Hardening Conditions
Annealed, age-hardened, and cold-drawn stock leaves one route.
QUALITY ASSURANCE
Strict Quality Control From Production To Delivery
Nothing ships before the ordered B865 requirements stand proven on the heat. Because chemistry, hardness, and dimensions all key to the heat number, incoming checks stay quick.
01
Chemistry Gate
The lab verifies the N05500 balance and prints aluminium and titanium before finishing starts.
02
Hardness Control
Also, we test aged bar against the ordered band, and NACE orders target 35 HRC max.
03
Size and Straightness Check
We measure diameter, straightness, and length against the B865 tolerance class.
04
Heat-Linked Records
Certificates tied to heat numbers accompany every shipment for your file.
PRODUCT FORMS
Available Product Forms
Every K-500 form below opens its own page, and each one carries the condition and tolerance that suit it. In addition, we quote all of them against the same heat and the same document set.
02
Monel K-500 Square Bar
Squares and rectangles cut to your width and thickness for blocks and frames.
View Monel K-500 Square Bar →
03
Monel K-500 Hex Bar
Across-flats sizes serve nuts, bolting, and multi-flat machining.
View Monel K-500 Hex Bar →
04
Monel K-500 Flat Bar
Flat and rectangular sections for tank stiffeners and skid frames.
View Monel K-500 Flat Bar →
05
Monel K-500 Forged Bar
Moreover, heavy diameters and custom sections arrive with a sound wrought structure.
View Monel K-500 Forged Bar →
06
Monel K-500 Bright Bar
Bright-drawn surfaces suit automatic lathes and visible components.
View Monel K-500 Bright Bar →
07
Monel K-500 Cold-Drawn Bar
Besides, drawing adds a stronger base before aging, so the cycle lands higher.
View Monel K-500 Cold-Drawn Bar →
08
Monel K-500 Age-Hardened Bar
Fully aged stock released at the ordered hardness band and the NACE cap.
View Monel K-500 Age-Hardened Bar →
09
Monel K-500 Centreless-Ground Rod
Ground surfaces deliver the diameter and straightness that shafting needs.
View Monel K-500 Centreless-Ground Rod →
10
Monel K-500 Threaded Rod
Furthermore, fully threaded bar and studs certified to F468 and F467.
View Monel K-500 Threaded Rod →
11
Monel K-500 Wire
Annealed and spring-temper wire, aged where the finished part calls for it.
View Monel K-500 Wire →
12
Monel K-500 Welding Wire
ERNiCu-7 and ENiCu-7 filler for joints in both Monel grades.
View Monel K-500 Welding Wire →
APPLICATIONS
Engineered For Demanding Industries
Offshore and oil and gas projects take most K-500 bar, and marine yards follow close behind. Meanwhile, chemical plants buy it where strength shortens shaft sizes.
Discuss Your Application →
01
Marine Propulsion Shafts
Propeller and pump shafts carry load in flowing seawater.
02
Splash-Zone Bolting
High-strength studs and bolts resist seawater and cyclic wave load.
03
Drill Collars and Stabilizers
Non-magnetic downhole tools keep survey readings clean in H2S-bearing brine.
04
Valve Stems and Trim
Hardened stems and seats resist wear and galling in corrosive flow.
05
Offshore and Subsea Hardware
In return, one part carries both strength and seawater resistance where design margins run thin.
06
Pump and Mixer Shafts
Reducing and alkaline media meet smaller, stiffer shaft sections.
07
Springs and Scrapers
Elastic parts keep strength in corrosive, moderate-temperature duty.
08
Salt Plant Supports
Evaporator fixtures and fasteners stand up to brine concentration.
TECHNICAL INFORMATION
Technical Specifications
Detailed technical information including chemical composition, mechanical properties, standards and available dimensions.
Chemical Composition
ASTM B865 fixes the limits below for UNS N05500 bar and rod, and nickel balances the melt. Aluminium and titanium drive the age-hardening response. Hence the mill test certificate decides final acceptance.
| Element | Content |
|---|---|
| Nickel (Ni) plus Cobalt (Co) | 63.0% min. |
| Copper (Cu) | 27.0–33.0% |
| Aluminium (Al) | 2.30–3.15% |
| Titanium (Ti) | 0.35–0.85% |
| Iron (Fe) | 2.0% max. |
| Manganese (Mn) | 1.5% max. |
| Carbon (C) | 0.18% max. |
| Silicon (Si) | 0.50% max. |
| Sulfur (S) | 0.010% max. |
Mechanical Properties
ASTM B865 sets the minimums below by condition and section size for age-hardened bar. Unaged stock follows hardness acceptance instead, capped at 185 HB annealed. Therefore confirm the ordered condition before comparing quotes.
| Condition / Section | Tensile Strength, min. | Yield Strength (0.2%), min. | Elongation, min. |
|---|---|---|---|
| Hot-worked and age-hardened, all sizes | ≥140 ksi (965 MPa) | ≥100 ksi (690 MPa) | 20% |
| Cold-worked and age-hardened, rounds 6.4–25.4 mm (1/4–1 in.) | ≥145 ksi (1000 MPa) | ≥110 ksi (760 MPa) | 15% |
| Cold-worked and age-hardened, rounds 25.4–76.2 mm (1–3 in.) | ≥140 ksi (965 MPa) | ≥100 ksi (690 MPa) | 17% |
| Cold-worked and age-hardened, rounds 76.2–101.6 mm (3–4 in.) | ≥135 ksi (930 MPa) | ≥95 ksi (655 MPa) | 20% |
| Annealed and age-hardened, rounds to 25.4 mm (1 in.) | ≥130 ksi (895 MPa) | ≥90 ksi (620 MPa) | 20% |
| Annealed and age-hardened, rounds over 25.4 mm (1 in.) | ≥130 ksi (895 MPa) | ≥85 ksi (585 MPa) | 20% |
Rounds over 108 mm (4-1/4 in.) carry a 17% elongation minimum, and the hardness rows in the standard serve for information only.
Physical Properties
In short, typical room-temperature values below aid design rather than acceptance. K-500 stays essentially non-magnetic, and its Curie point sits far below ambient temperature.
| Property | Value |
|---|---|
| Density | Approx. 8.44 g/cm³ |
| Melting range | Approx. 1315–1350 °C |
| Modulus of elasticity | Approx. 179 GPa |
| Thermal conductivity at 20 °C | Approx. 17.5 W/m·K |
| Specific heat at 20 °C | Approx. 419 J/kg·K |
| Electrical resistivity at 20 °C | Approx. 0.615 µΩ·m |
| Thermal expansion, 20–100 °C | Approx. 13.7 µm/m·K |
| Curie temperature | Approx. -101 °C (-150 °F) |
| Magnetic behaviour | Essentially non-magnetic at ambient temperature |
Standards
ASTM B865 governs bar and rod, and ASME SB865 serves pressure equipment. ASTM International publishes both, and the designations below work as cross-reference identifiers rather than separate approvals. Also name the standard together with condition and section in your inquiry.
| Standard / Designation | Scope |
|---|---|
| ASTM B865 | Nickel-copper-aluminium alloy bar, rod and forgings — UNS N05500 |
| ASME SB865 | ASME edition for bar, rod and forgings |
| SAE AMS 4676 | Nickel-copper alloy bars, forgings and rings |
| SAE AMS-QQ-N-286 | Federal specification for K-500 bar, wire and forgings |
| UNS N05500 | Material designation for Monel K-500 |
| W.Nr. 2.4375 / NiCu30Al | European designation for Monel K-500 |
| JIS NW 5500 | Japanese designation |
| BS 3076 NA18 | British nickel-copper bar standard |
| DIN 17743 / DIN 17752 | Nickel-copper wrought alloys — chemistry and bar |
| NACE MR0175 / ISO 15156-3 | Material guidance for H2S-bearing service |
Dimensions
Ranges below describe normally produced sections, and exact availability follows condition, finish, and quantity. Tolerances follow ASTM B865 for the ordered condition. Name diameter, section, length, and finish in the inquiry.
| Product Form | Typical Supply | Length |
|---|---|---|
| Round Bar | 6–500 mm dia. | Cut to length or random |
| Round Rod | 3–50 mm dia. | Cut to length |
| Bright Bar | 6–150 mm dia. | Cut to length or random |
| Square Bar | 10–150 mm | Cut to length or random |
| Hex Bar | 10–150 mm A/F | Cut to length or random |
| Flat Bar | 3–100 mm thick × 10–300 mm wide | Cut to length |
| Forged Bar | 100–500 mm dia. or forged section | Cut to length |
| Precision-Ground Rod | 3–100 mm dia., tight tolerance | Cut to length |
Sizes past these ranges go through a route review before we quote.
Surface Finishes
We select finish for the next operation, whether machining allowance, fabrication, or a finished look. Availability follows diameter, condition, and order quantity. In addition, we confirm each finish with the order rather than assume it from stock.
| Surface Condition | Typical Use |
|---|---|
| Hot-worked (as-rolled or forged) | Parts that will be machined to size |
| Annealed and pickled | Scale-free surface for fabrication |
| Cold drawn | Close diameter control with a bright surface |
| Age-hardened | Full-strength bar for shafts, fasteners and trim |
| Stress relieved | Straightness and dimensional stability for drawn bar |
| Peeled | Uniform diameter with machined skin for further turning |
| Centreless ground | Tight diameter and straightness for shafting |
| Polished | Reduced roughness for product-contact and visible parts |
TECHNICAL DOCUMENTATION
Download Technical Datasheet
Get detailed information including specifications, standards, dimensions and material properties.
HOW TO START
Start Your Order in 6 Simple Steps
One coordinator keeps a K-500 order moving from inquiry to loading. Because condition drives everything, the aging route is agreed in writing first.
1
Send an Inquiry
Give grade, B865 condition, diameter, length, quantity, and finish.
2
Condition Review
We match the aging route and tolerance class to your duty.
3
Quotation
One reply carries price, lead time, and the document list.
4
Order Confirmation
We log grade, dimensions, inspection level, and terms before cutting.
5
Production and Heat Treatment
The mill works, solution-anneals, and ages the heat to the ordered condition.
6
Shipment
Certificates and export papers ride with the bar, and we confirm terms with you.
What Our Clients Say
Feedback from buyers and engineers who source nickel alloy materials from Southerly Alloy.
★★★★★
“Age-hardened bar arrived inside the agreed hardness band, and our NACE file review cleared on the first pass.”
★★★★★
“Non-magnetic stock kept survey interference out of our tool string, and diameters ran true on every collar.”
★★★★★
“Aged shaft stock machined predictably after we roughed it before aging, and the final size held after treatment.”
CERTIFICATIONS & QUALITY DOCUMENTATION
Certifications & Quality Documentation
Our production and inspection processes are certified to international standards, and every delivery ships with EN 10204 3.1 mill test certificates.
ISO 9001:2015
Quality Management System
PED 2014/68/EU
Pressure Equipment Directive
ASTM / ASME
Material Standards Compliance
EN 10204 3.1
Mill Test Certificates
FAQ
Frequently Asked Questions
Which ASTM specification covers Monel K-500 bar and rod?
ASTM B865 governs the bar, and ASME SB865 applies in pressure service.
What is your MOQ for Monel K-500 bar?
Minimum orders start at one bar in stock diameters, and we scale from there.
What are your trade terms for Monel K-500 bar?
Quotations default to FOB, with EXW and CIF available when you ask.
How is the price of Monel K-500 bar built?
Finished weight drives the price, and we lock copper and aluminium rates at the quotation date.
What is the lead time for Monel K-500 bar?
Ready sizes leave in 7–15 days, and custom diameters need roughly 25 days.
Do you provide EN 10204 3.1 or 3.2 certificates?
Yes. 3.1 certificates accompany each heat, and 3.2 witness follows on request.
Can Monel K-500 bar ship in the age-hardened condition?
Yes. Age-hardened bar arrives with hardness records, and NACE orders target the 24–35 HRC band.
Should I machine K-500 bar before or after aging?
We recommend rough machining before aging, because the section contracts slightly during the cycle.
Are there service limits for aged K-500?
Hydrofluoric acid, mercury, and sour streams deserve a review, since aged material is more prone to stress corrosion cracking in some media.
What export documentation is included?
Shipments carry CI, PL, B/L, and the MTC, and origin certificates follow on request.
REQUEST FOR QUOTATION
Need A Custom Alloy Solution?
Send grade, B865 condition, diameter, quantity, and finish, and one reply carries price, lead time, and the document list. We fix condition and hardness band before production, so the bar you approve is the bar that loads.
Both stock and custom diameters stay open for order, and a trial bar before volume keeps risk low.
