Does the alloy name define a finished fastener?

No. The order still needs a material form/specification and condition, finished geometry and thread requirements, mechanical acceptance, inspection scope and traceability.

Is this page a stock statement?

No. Product form, size, condition, quantity, manufacturing route, inspection and schedule are reviewed for each enquiry.

Can a comparison approve substitution?

No. Comparison is a screening aid. Substitution requires review against the service conditions, governing specifications, design authority and purchase documents.

What should be sent with the RFQ?

Send the drawing or standard, size/thread, quantity, material specification and condition, service context, inspection/documents, target date and destination.

Monel K-500 Fasteners & Material Enquiries

What is Monel K-500 and its applications?

Monel K-500 (UNS N05500) is an age-hardenable nickel-copper alloy. It combines corrosion resistance with greater strength than the unaged nickel-copper base and is used in marine hardware, oilfield components and instruments.

Marine hardware: Fasteners, springs, pump shafts and impellers.
Oil and gas equipment: Drill collars, valve parts and oil-well instruments.
Instrumentation: Sensor components and housings with controlled magnetic requirements.

Compare materials ↗Technical source ↗

Choose your K-500 product

Engineering Application & Selection Guide

Aluminum and titanium additions allow gamma-prime Ni₃(Ti,Al) to precipitate during aging. Although its general corrosion behavior resembles Monel 400, aged K-500 has a greater tendency to stress-corrosion cracking in some environments.

Monel K-500 stud bolts — For sour-service flange enquiries, state the heat treatment, hardness requirement, fluid composition, temperature and applicable acceptance criteria.
Monel K-500 hex bolts — For seawater connections, assess stagnation, fouling and crevices as well as mechanical loading.
Monel K-500 socket head cap screws — For magnetically sensitive housings, specify the final-part magnetic-permeability limit and test conditions rather than relying on a generic non-magnetic description.

Compare Monel 400 and K-500 using the specified condition and environment. Sour-service acceptance must be established against the applicable standard and environmental limits; aging and a hardness result alone do not establish compliance.

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Monel K-500 Composition

Composition limits · wt.%

ElementWeight %

Ni: ≥63%
Cu: 27–33%
Al: 2.30–3.15%
Ti: 0.35–0.85%
Fe: ≤2.0%
C: ≤0.18%
Mn: ≤1.5%
S: ≤0.010%
Si: ≤0.50%

ASTM / ASME specifications by product form

Finished-product requirements

Specify the finished-fastener mechanical requirements, condition and inspection separately from the starting-stock specification.

Monel K-500 hex bolt requirements ↗

Fasteners · dimensional references

Product	Reference
Hex bolts	ISO 4014 / ISO 4017 · ASME B18.2.1
Threaded studs	DIN 976-1 · ASME B18.31.2
Hex nuts	ISO 4032 · ASME B18.2.2
Socket head screws	ISO 4762 · ASME B18.3
Flat washers	ISO 7089 / ISO 7090 · ASME B18.21.1
Custom fasteners	Customer drawing

Raw-material specifications

Product form / scope	Reference
Rod & bar	ASTM B865 · AMS 4676 · ISO 9723
Forgings	ISO 9725 · DIN 17754 · QQ-N-286
Wire	ISO 9724 · DIN 17753 · BS 3075 (NA18)
Plate, sheet & strip	ISO 6208 · DIN 17750 · QQ-N-286
Pipe & tube	BS 3074 (NA18) · DIN 17751

Dimensions do not define material or finished-part compliance. Specify the grade, condition and applicable requirements.

How to specify round bar, plate, wire and strip ↗

Monel K-500 Mechanical Properties

Reference sample and condition

Data basis: Catalogue reference minimums
Gauge length: A5, as labelled in supplied table

Key properties	Value
Tensile strength	≥965 MPa
0.2% yield strength	≥690 MPa
Elongation	≥15%

Supplied technical reference · Scanned PDF page 6 · printed page 18

Monel K-500 Physical Properties

Property	Value	Unit
Density	8.44	g/cm³
Melting range	1315–1350	°C

Temperature curves and values

Monel K-500 Tensile strength, 0.2% yield strength versus temperature; Annealed and age-hardened material · producer Figure 9; MPa and degrees Celsius — Tensile and yield strength
Annealed and age-hardened material · producer Figure 9

Monel K-500 Elongation versus temperature; Annealed and age-hardened material · producer Figure 9; percent and degrees Celsius — Elongation vs temperature
Annealed and age-hardened material · producer Figure 9

Procurement and application guide

Specify the material and final condition

Confirm the aging condition and susceptibility to cracking in the actual service.

Material forms in the technical reference: Round bar · Flat bar · Wire · Plate · Sheet · Strip · Pipe & tube · Forging stock · Hexagon & sections.

Define the finished-part acceptance

Include the material or bolting specification, required final condition, dimensions and quantity. State the service medium, temperature and loading where known. Agree the required tests, inspection coverage and acceptance criteria for the finished part.

Start with the information you have

Send a drawing or share the product form and dimensions. Identify any undecided requirements for review rather than copying a typical property value into the purchase order.

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