Hastelloy C22 Stud Bolts

In industrial fastening, Hastelloy C22 stud bolts offer higher corrosion resistance than most nickel alloys. UNS N06022 stud bolts are resistant to wet chlorine, chlorine dioxide, hypochlorite, and mixed acid environments without degrading. The performance of alloy C22 stud bolts in oxidising conditions is stronger due to their higher chromium content. These bolts are often used in pharmaceutical systems, waste treatment, and flue gas desulfurization, where material failure has serious operational consequences. They are a reliable choice for long-term service in chemically aggressive piping assemblies.

Price of Hastelloy C22 Stud Bolts

Hastelloy C22 stud bolt pricing shifts based on size, certifications, and market availability. Costs are higher than most nickel alloy fasteners due to raw material composition.

Approx Price Range

Hastelloy C22 stud bolts price generally falls between ₹8 and ₹250 per piece. C22 costs more than C276 due to higher chromium content and relatively tighter market supply. Larger diameters and custom lengths push the price further up.

Price Per Unit / Kg

Smaller sizes between M6 and M16 commonly range from ₹8 to ₹250 per piece. For weight-based procurement, stud bolts of alloy C22 generally cost ₹5,000 per kg. These are market reference figures, and actual UNS N06022 stud bolts pricing varies by supplier and order conditions.

Factors Affecting Price

The raw material cost of UNS N06022 alloy is the primary factor. Thread type and bolt length add to the base cost; longer bolts with complex threading cost more. Certification requirements differ from project to project and impact the pricing directly. Surface finish and post-processing requirements, as well as regional availability and import duties, influence the final price of Hastelloy C22 stud bolts.

Types of Hastelloy C22 Stud Bolts

Below are the main configurations of Hastelloy C22 stud bolts available from suppliers, including types used in flanged and tapped hole assemblies.

Fully Threaded Stud Bolts

Double End Stud Bolts

Tap End Stud Bolts

Equal End Stud Bolts

Specifications of Hastelloy C22 Stud Bolts

The section on Hastelloy C22 stud bolt specifications mentions material grade, standards, sizes, threads, and finish required at the time of procurement and technical review.

Parameter	Details
Material Grade	Hastelloy C22 / UNS N06022 / W.Nr. 2.4602
Standards	ASTM B574, ASME SB574
Thread Standards	ASME B18.2.1, B18.2.2, DIN 976
Size Range	M6 to M100 / 1/4" to 4"
Length	25 mm to 3000 mm
Hardness	85 HRB max
Finish	Plain, Pickled, Passivated

Chemical Properties of Hastelloy C22 Stud Bolts

The table below lists the chemical composition limits for each element, useful for quick checking during material selection and specification review.

Element	Composition
Ni	Balance
Cr	20.00 – 22.50
Mo	12.50 – 14.50
W	2.50 – 3.50
C	≤0.015
Si	≤0.080
Co	≤2.50
Mn	≤0.50
V	≤0.35
P	≤0.02
S	0.02

Mechanical Properties of Hastelloy C22 Stud Bolts

The table below shows the basic mechanical properties, giving quick reference values for strength and elongation during material comparison and selection work.

Property	Value
Tensile Strength	≥100 ksi (690 MPa)
Yield Strength	≥310 MPa
Elongation	≥45%

Physical Properties of Hastelloy C22 Stud Bolts

Below is the physical data for UNS N06022 stud bolts used by engineers when calculating thermal expansion, heat transfer, and material behaviour in service conditions.

Property	Value
Density	8.69 g/cm³
Melting Point	1357 – 1399°C
Thermal Conductivity	10.1 W/m·K
Electrical Resistivity	1.14 µΩ·m
Modulus of Elasticity	211 GPa

Dimension Chart of Hastelloy C22 Stud Bolts

Dimensional reference for alloy C22 stud bolts in standard metric sizes, covering thread pitch, shank diameter, and length ranges for flanged piping use.

Nominal Size	Thread Pitch (mm)	Shank Diameter (mm)	Standard Length Range (mm)
M6	1.0	6.0	25 – 100
M8	1.25	8.0	30 – 150
M10	1.5	10.0	40 – 200
M12	1.75	12.0	50 – 250
M16	2.0	16.0	60 – 300
M20	2.5	20.0	80 – 400
M24	3.0	24.0	100 – 500
M30	3.5	30.0	120 – 600

Key Features of Hastelloy C22 Stud Bolts

C22 stud bolts are used where both oxidising and reducing conditions are present. The alloy composition makes it more selective than C276 for certain chemical environments.

Higher chromium content improves performance
Resists pitting and crevice corrosion in chloride media
Low carbon content keeps weld zones stable
Performs across a wide temperature range
Suited for mixed-acid service conditions

Applications of Hastelloy C22 Stud Bolts

Alloy C22 stud bolts are used in industries where mixed corrosive media, oxidising conditions, or strict contamination control make standard fastener grades unsuitable.

Mixed acid reactors, scrubbers, storage vessels

CIP/SIP systems, high-purity fluid lines

Chlorinated effluent piping

Bleach plant equipment and fittings

Desulfurization unit fastening

High-pressure flanged connections

How to Choose the Right Hastelloy C22 Stud Bolts Supplier?

While choosing a Hastelloy C22 supplier, you need to check the material traceability, stock availability, and certification standards before you decide to make any order.

Supplier Selection Criteria

Look for a Hastelloy C22 stud bolt supplier that can track down the material to the original melt. Always check their stock position of UNS N06022 stud bolts before placing an order, particularly when project timelines are fixed.

Technical Considerations

The thread form should be confirmed early. Alloy C22 stud bolts are available in metric and inch sizes, but availability depends on the supplier. If ASME B16.5 flanges are being used on the project, check that the bolt dimensions match the correct pressure class.

Quality & Certification Check

Make sure you check for ASTM B574 compliance. Ask for surface finish documentation for pharmaceutical use. Buy Hastelloy C22 stud bolts in bulk. Mill certificates EN 10204 3.1 showing traceability and certification of the quality of material.

Procurement Tips for Bulk Orders

Always write down the period of validity of the price. Prices of raw materials for UNS N06022 can vary from order to delivery. Packaging is important too. Alloy C22 stud bolts must be properly wrapped to prevent surface damage in transit.