Monel K500 Stud Bolts

Monel K500 stud bolts are produced from UNS N05500, a precipitation-hardenable nickel-copper alloy. Aluminium and titanium additions allow age hardening, giving K500 more than twice the strength of Monel 400 while retaining similar corrosion resistance. The alloy is non-magnetic down to -101°C and performs well in seawater, hydrofluoric acid, and reducing acid environments. These stud bolts are used in offshore oil and gas, marine engineering, chemical processing, and subsea equipment where high strength, seawater resistance, and low magnetic permeability are all required together.

Approx Price Range

Here is the approximate price of Monel K500 stud bolts per kg and the factors affecting the rates. 

Price Per kg

The cost of Monel K500 stud bolts is about ₹1,000 - ₹1,500/kg. Pricing by the piece is standard for small orders or single-stud needs. Ask your supplier for both rate options before confirming an order. 

Factors Affecting Price

Nickel and copper spot rates, order volume, stud length, thread form, age-hardening treatment, certification requirements, and delivery lead time all affect the final cost of UNS N05500 stud bolts.

Types of UNS N05500 Stud Bolts

Monel K500 stud bolts are supplied in several configurations. Each type is suited to a specific joint design, flange class, or assembly condition.

• Fully Threaded Stud Bolts

• Double-End Stud Bolts

• Tap-End Stud Bolts

• Continuous Thread Stud

• Collar Stud Bolts 

Alloy K500 Stud Bolts Specifications

The table below covers the key specification parameters for Monel K500 stud bolts as per international standards.

Chemical Properties of Monel K500 Stud Bolts

The composition below shows the aluminium and titanium additions that distinguish K500 from Monel 400 and enable precipitation hardening for higher strength.

Mechanical Properties of ASTM B865 UNS N05500 Stud Bolts

The mechanical values below apply to age-hardened Monel K500 bar stock used to manufacture stud bolts per ASTM B865 and ASTM F468.

Physical Properties of DIN 2.4375 Stud Bolts

The physical properties below assist engineers in assessing thermal behaviour and suitability across the operating temperature range.

Dimension Chart of Monel K500 Stud Bolts per ASME B16.5

The table below lists standard stud bolt dimensions for Monel K500 per ASME B16.5 Class 150, for raised face (RF) and ring type joint (RTJ) flanges.

Size Chart of Alloy K500 Stud Bolts

The size chart below covers standard stud bolt diameters and thread pitches for both metric and unified thread forms.

Torque Chart of UNS N05500 Stud Bolts

The torque values below apply to Monel K500 stud bolts with hex nuts under controlled assembly conditions. Confirm values with your engineering team based on joint design and flange class.

Key Features of Monel K500 Stud Bolts

Monel K500 stud bolts deliver a combination of high strength and corrosion resistance that is rarely matched by other nickel alloys in the same size range.

• Age-hardened strength
• Seawater corrosion resistance
• Non-magnetic to -101°C (-150°F)
• Resistance to hydrofluoric acid
• Excellent sub-zero toughness
• Sour gas resistance
• Good weldability
• Wide size range

Applications of ASTM F468 Monel K500 Stud Bolts

These stud bolts are made from Alloy K500, which has high strength and corrosion resistance. This makes them a reliable choice in demanding offshore and chemical service applications.

• Offshore Oil and Gas
• Marine Engineering
• Chemical Processing
• Subsea and Deep-Water Equipment
• Aerospace and Defence
• Power Generation
• Pulp and Paper

How to Choose the Right Monel K500 Stud Bolt Supplier?

Consider the following things when choosing the right Monel K500 bolt supplier.

Supplier Selection Criteria

Stock availability in multiple diameters and lengths is the first check. K500 stud bolts are less commonly stocked than standard 316 or Carbon Steel studs, so confirm the supplier holds finished age-hardened inventory. Nickel alloy experience is preferred from suppliers, rather than general fastener distributors. Ask them if they can provide non-magnetic certification and NACE compliance documentation with the material.

Technical Considerations

Material test certificates for chemical composition and mechanical properties in accordance with ASTM B865 and ASTM F468 should be requested. For age-hardened supply, check that the hardness and tensile values meet the requirements for the precipitation-hardened condition. Verify that hardness does not exceed the maximum allowable for the application for NACE MR0175 service. For ASME B16.5 flanges, verify that the stud bolt length and thread count meet the applicable flange class bolting table.

Quality and Certification Check

EN 10204 / 3.1 mill test certificates with heat number traceability are the minimum requirement. For subsea or offshore projects, also request PMI (positive material identification) reports on finished studs, hydrogen embrittlement test records, and any project-specific documentation required by your quality plan. ISO 9001 certification is a baseline; API or DNV certification from the supplier is a further indicator of credibility for oil and gas work.

Procurement Tips for Bulk Orders

K500 prices track LME nickel and copper. Lock in rates at order placement on long-duration projects. Age-hardened material requires an additional processing step, so lead times are longer than for the annealed supply. Ask for samples and hardness test reports before approving a full production batch. Blanket purchase orders reduce per-unit cost for repeat procurement. Never trust verbal lead time estimates. Always confirm written delivery timelines.