Monel K500 Bolts Supplier

Ultra-high Strength
Good Toughness
Low-Temperature Performance

Monel K-500 Bolts: Ultra-High Strength, Non-Magnetic Fasteners for Demanding Marine, Energy & Defense Applications

SSM provides Monel K-500 bolts engineered for extreme service where corrosion resistance, ultra-high strength, and non-magnetic properties are simultaneously required. These precipitation-hardened nickel-copper alloy fasteners deliver an exceptional combination of strength exceeding standard Monel grades, excellent toughness, and unparalleled resistance to seawater, hydrofluoric acid, and chloride stress corrosion cracking, making them the ideal choice for critical marine propulsion, deepwater oil & gas, and defense applications.

SSM Monel K-500 Bolts are manufactured in strict accordance with ASTM, ASME, AMS, and applicable international standards, with full heat treatment traceability and material certification (including EN 10204 3.1) available. They are specifically engineered for use in submarine systems, non-magnetic drill collars, seawater pump shafts, high-performance valve stems, and other demanding applications where reliability under severe mechanical stress and corrosive exposure is paramount.

Technical Specifications

Parameter	Beschreibung
Product Name	Monel K-500 Bolts / Stud Bolts
Material	Precipitation-Hardenable Nickel-Copper Alloy UNS N05500
Produkttyp	Bolts, Stud Bolts, Threaded Rods, Special Shapes
Key Strengths	Ultra-High Strength & Hardness; Excellent Non-Magnetic Properties; Superior Corrosion Resistance
Strengthening Method	Precipitation Hardened (Aged) per AMS 4676 / ASTM B865 (Not strengthened by cold work alone)
Wärmebehandlung	Solution Annealed & Aged (typically: 840-870°C anneal, 595-620°C age)
Temperaturbereich	Cryogenic to Approx. 480°C (900°F) for continuous service
Korrosionsbeständigkeit	Excellent resistance to: Seawater & brine, Hydrofluoric Acid, Sulfuric & Hydrochloric Acids, Chloride SCC. Inherits Monel 400’s corrosion profile with higher strength.
Unique Property	Fully Non-Magnetic in all heat-treated conditions
Geltende Normen	ASTM / ASME (B865, F468M), AMS 4676, DIN, ISO, MIL Specs (customizable)
Größenbereich	Customized (M4 to M80 & equivalent inch series)
Oberflächenfinish	Plain / Passivated (ASTM A967) / Mandatory Anti-Galling Coatings (e.g., Xylan, PTFE) highly recommended
Primary Applications	Marine Propulsion (shafts, fasteners), Non-Magnetic Drill Collars, Oil & Gas Downhole Tools, Defense/Aerospace Components, High-Performance Valve Stems
Certification	EN 10204 3.1 / 3.2, Mill Test & Heat Treatment Certificates, Full Traceability
Warranty	As per specific contract and application conditions
After-sales Service	Full technical documentation, material selection & heat treatment consultation, application support

Material Properties – Monel K500

Monel K500 is a precipitation-hardenable nickel-copper alloy that retains the excellent corrosion resistance of Monel 400 while achieving significantly higher strength and hardness through aging heat treatment. It also maintains full non-magnetic properties after treatment, making it suitable for specialized applications in marine, oil and gas, and defense industries.

Chemical Composition (wt.%)

Element	Inhaltsbereich	Primary Function
Nickel (Ni)	≥ 63,0%	Base element, provides austenitic structure and corrosion resistance foundation, particularly against reducing acids.
Kupfer (Cu)	28.0 – 34.0%	Key alloying element, significantly enhances corrosion resistance in reducing acids (e.g., sulfuric acid, hydrofluoric acid) and seawater, and imparts certain strength to the alloy.
Eisen (Fe)	≤ 2,51 TP3T	Controlled impurity element, acceptable in small amounts.
Mangan (Mn)	≤ 2,01 TP3T	Deoxidizer and impurity element, helps improve hot workability.
Kohlenstoff (C)	≤ 0,3%	Controlled impurity element, typically maintained at low levels.
Silizium (Si)	≤ 0,51 TP3T	Deoxidizer and impurity element.
Schwefel (S)	≤ 0,024%	Strictly controlled harmful impurity.

Mechanical Properties (After Aging Treatment)

Typical Aged Condition (AMS 4676 / ASTM B865):

Tensile Strength: 1000 – 1200 MPa (145 – 174 ksi)
Yield Strength (0.2% Offset): 690 – 860 MPa (100 – 125 ksi)
Verlängerung: ≥ 20%
Hardness: Rockwell C 25 – 35 (Brinell 280 – 350 HB)

Leistung bei niedrigen Temperaturen:

Maintains excellent toughness and ductility at cryogenic temperatures, with no ductile-to-brittle transition.

Non-Magnetic Property:

Remains fully non-magnetic in all heat-treated conditions, with magnetic permeability typically µ ≤ 1.002.

Monel K500 Bolts Typical Applications

Schifffahrt und Offshore: Propeller shafts, pump shafts, fasteners, submarine components (benefiting from non-magnetic properties).
Öl und Gas: Non-magnetic drill collars, downhole tools, instrument housings, valve stems.
Aerospace & Defense: High-strength fasteners, engine components, non-magnetic housings.
Chemische Verarbeitung: Shafts, impellers, and fasteners in HF acid and other corrosive media requiring high strength.
Specialty: Springs, doctor blades, electronic components requiring high strength and non-magnetic characteristics.

Flanschanbieter aus einer Hand für alle Ihre Anforderungen

SSM has significant product advantages in manufacturing Monel 400 Bolts. Whether it’s quality or price, we will meet your needs.

Monel K-500 Bolts Standards and Specifications

Monel K-500 bolts (UNS N05500) are a premier high-strength, corrosion-resistant, and non-magnetic fastener solution for demanding marine, defense, oil & gas, and aerospace applications. The main standards and specifications commonly referenced by international buyers are organized below into “Material / Fasteners / Manufacturing / Testing / Coating” categories.

Kategorie	Standard / System	Description / Notes (For Monel K-500 Bolts)
Material Standards	UNS N05500	Precipitation-hardenable nickel-copper-aluminum alloy grade (core identification standard).
	ASTM B865 / ASME SB-865	Standard specification for precipitation-hardened nickel-copper-aluminum alloy rod, bar, wire, and forgings (primary material standard).
	AMS 4676	Aerospace Material Specification for bars, forgings, and rings (the dominant aerospace/defense standard).
Fastener Standards	ASTM F468M	Nonferrous bolts, hex cap screws, and studs for general use (metric). This is a key fastener specification, but specific heat treatment must be called out.
	MIL-DTL-46882	Military specification for nickel alloy bolts, screws, and studs, covering K-500 (widely used in defense and marine projects).
	ASME B18.2.1 / B18.31.2	Hex bolts and stud bolts dimensional standards (applied based on material and procurement spec).
European / International Standards	DIN 17742 / 17743	German standards for nickel and nickel alloy wrought products, covering applicable forms.
	EN 10204 3.1 / 3.2	Material test certificate (mandatory for European projects, must include heat treatment certification).
Chemical, Metallurgical & Heat Treatment	ASTM B865 / AMS 4676	Define required chemical composition ranges and mandatory heat treatment cycles.
	Wärmebehandlung	Solution Annealed & Aged (Precipitation Hardened) per AMS 4676/ASTM B865. Condition (e.g., H1150) must be specified. This is the core strengthening mechanism.
	Non-Magnetic Property	Typically specified with maximum magnetic permeability (e.g., µ ≤ 1.005 or 1.002). Verified per ASTM A342.
Inspection & Testing	ASTM E8 / E21	Tensile testing at room temperature (mandatory). Elevated temperature testing may be specified for critical applications.
	ASTM E10 / E18	Brinell/Rockwell hardness testing (to verify aging response).
	ASTM E112	Grain size assessment (often required for high-integrity forgings).
	ASTM A342	Test for magnetic permeability (critical for non-magnetic applications).
	PMI Testing (XRF / OES)	Positive Material Identification is essential to verify alloy chemistry.
	Stress Rupture / SCC Testing	May be specified (e.g., per ASTM G36 or G49) for downhole or high-stress corrosive service.
Surface Treatment & Anti-Galling	Passivation	Per ASTM A967, to improve surface corrosion resistance.
	Anti-Galling Coatings	PTFE / Xylan / Molybdenum Disulfide (MoS₂) / Nickel-PTFE composite coatings. Highly recommended or mandatory due to severe galling tendency under high clamp loads.
Industry Standards / References	AMS Specifications	The primary governing system for aerospace and defense applications (e.g., AMS 4676).
	ASME Boiler & Pressure Vessel Code, Section III	May be referenced for nuclear components; Section VIII for pressure vessels.
	API 6A / 7-1 / 20C	For oil & gas wellhead, drill string components (e.g., non-magnetic drill collars), and corrosion-resistant alloy specifications.
	NACE MR0175 / ISO 15156	Material requirements for sour service. K-500 has good resistance but temperature and H₂S partial pressure limits must be verified for the aged condition.
	NORSOK M-001 / M-630	Materials selection standard for the Norwegian offshore sector.
	Defense Standards (e.g., US Navy)	Often have detailed specifications for submarine and marine propulsion shafting and fasteners.

Monel K500 is a versatile, high-performance alloy that combines the excellent corrosion resistance of Monel 400 with significantly enhanced strength, hardness, and non-magnetic properties through precipitation hardening. It is the material of choice for demanding applications in corrosive environments where mechanical performance and magnetic neutrality are critical.

Weitere Ressourcen:

https://en.wikipedia.org/wiki/Stainless_steel