Hastelloy C22 Screw

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MOQ : 1 Piece

Hastelloy C22 Screw Specification

Impurity Content (%)
Max 0.015%

Dimensions
Available in M3 to M48 diameter, length as specified by customer

Product Type

Alloy
Hastelloy C22

Shape

Size
Standard and custom sizes available

Weight
Varies according to size and length

Application
Chemical processing, pharmaceuticals, pollution control, marine, high-corrosive environments

Color
Silver/Grey metallic

Surface Finish
Bright, Passivated, or as specified

Thread Type
Metric, UNC, UNF available

Packaging
Boxed or bulk as per order

Hardness
Approx. 217 HB (Brinell)

Tensile Strength
Approx. 690 MPa (min)

Magnetic Properties
Non-magnetic

Corrosion Resistance
Excellent against oxidizing and reducing acids including chlorides

Head Type
Flat/Phillips/Hex/Socket/Custom

Standard
ASTM B574 / ASME SB574

Material Grade
UNS N06022, DIN 2.4602

Temperature Range
Up to 1250C (2282F)

Hastelloy C22 Screw Trade Information

Minimum Order Quantity
1 Piece

Delivery Time
7 Days

About Hastelloy C22 Screw

C22 Hastelloy Screw is a nickel-chromium-molybdenum alloy containing 22% chromium, 13.5% molybdenum, and 3% tungsten for superior corrosion resistance and a wide range of other properties. It has excellent resistance to localized corrosion and stress-corrosion cracking. This alloy is exceptionally resistant to pitting, crevice corrosions, and environmental cracking in warm chloride solutions, making it durable for some of the harshest industrial applications. It also demonstrates good weldability and formability without losing strength or high-temperature tempering properties. Hastelloy Screw C22 offers superior resistance to oxidizing acids such as nitric acid solutions due to its higher chromium content.

Superior Corrosion Resistance

Hastelloy C22 Screws are known for their outstanding resistance to a broad range of corrosive media, including both oxidizing and reducing acids. This makes them particularly valuable in environments where standard fasteners would succumb to corrosion. The high performance against chlorides and other aggressive chemicals ensures long-lasting durability, minimizing replacement needs and operational downtime.

Versatile Applications Across Industries

Due to their robust mechanical strength and superior corrosion resistance, Hastelloy C22 Screws are widely used in chemical processing, marine operations, pharmaceuticals, pollution control, and other high-corrosive environments. Their adaptability makes them the fastener of choice for critical applications where safety and reliability are paramount.

FAQ's of Hastelloy C22 Screw:

Q: How are Hastelloy C22 screws processed to achieve their high corrosion resistance?

A: These screws undergo precise manufacturing procedures, including choice of alloy (UNS N06022), controlled forging, and surface finishing such as passivation or bright polish. These steps ensure the surface is free from contaminants that could compromise corrosion resistance, making them suitable for aggressive chemical environments.

Q: What are the main benefits of choosing Hastelloy C22 screws for high-corrosive environments?

A: The primary advantages include exceptional durability against a wide variety of corrosive agents, reliable mechanical strength (approx. 690 MPa minimum tensile strength), and suitability for applications up to 1250C. Their non-magnetic nature and low impurity content further enhance suitability for sensitive and specialized installations.

Q: When should Hastelloy C22 screws be specified over stainless steel fasteners?

A: Hastelloy C22 screws are recommended when the application involves exposure to highly aggressive chemicals such as chlorides, acids, or high-temperature oxidizing/reducing media, environments where stainless steel may not offer sufficient resistance or longevity.

Q: Where are these screws commonly used?

A: They are frequently installed in chemical manufacturing plants, pharmaceutical facilities, pollution control systems, offshore and marine structures, and anywhere that requires resistance to severe corrosion and high-temperature performance.

Q: What head and thread options are available for Hastelloy C22 screws?

A: These screws are available with Flat, Phillips, Hex, Socket, and customizable head types. You can also select from Metric, UNC, and UNF thread forms, allowing flexibility for specific assembly and mechanical requirements.

Q: How do I select the right size and finish for my application needs?

A: Sizes range from M3 to M48 with custom lengths available, while surface finishes include bright and passivated options. Selection should be based on installation environment, required mechanical strength, and specific industry standards or preferences.

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