ASTM A182 F316Ti UNS S31635 Forged Stainless Steel Tubesheet for Heat Exchanger

ASTM A182 F316Ti Stainless Steel Tubesheet is a forged and machined heat exchanger component manufactured from UNS S31635 / F316Ti austenitic stainless steel.

The tubesheet is designed to support and locate heat exchanger tubes while separating the shell-side and tube-side fluid spaces. Depending on the equipment design, it can incorporate precision-machined tube holes, bolt holes, pass partition grooves, sealing surfaces and other features required by the customer drawing.

F316Ti is a titanium-stabilized molybdenum-bearing stainless steel grade. ASTM A182 identifies F316Ti as UNS S31635, with chromium, nickel and molybdenum as the principal alloying elements and titanium added according to the specified stabilization requirement.

The tubesheet can be manufactured according to ASTM A182 / ASME SA182 material requirements and finished according to TEMA, ASME, customer drawings or project-specific specifications where applicable.

Product Specifications

Material: F316Ti / UNS S31635

ASTM A182 F316Ti is a titanium-stabilized austenitic stainless steel forging grade.

The principal alloying elements are chromium, nickel and molybdenum. Titanium is controlled to stabilize the grade against chromium carbide precipitation according to the ASTM chemical requirement.

Typical Chemical Composition

Mechanical Properties

Typical minimum mechanical requirements for ASTM A182 F316Ti include:

Tubesheet Design

The tubesheet can be manufactured according to the customer's heat exchanger drawing.

Tube Holes

Precision-machined tube holes can be supplied according to:

• Tube OD
• Tube wall thickness
• Tube-to-tubesheet joint design
• Tube pitch
• Hole diameter
• Hole tolerance
• Hole depth

Tube Hole Arrangement

Available layouts can include:

• 30° triangular
• 60° triangular
• 45° rotated square
• 90° square
• Custom arrangement

The actual hole pattern should follow the approved equipment drawing.

Pass Partition Grooves

For multi-pass heat exchangers, pass partition grooves can be machined into the tubesheet face according to the specified design.

Bolt Holes

Bolt-hole quantity, diameter and PCD can be machined according to the shell, channel or flange connection design.

Heat Exchanger Applications

Shell-and-Tube Heat Exchangers

The F316Ti tubesheet can be used as a tube-supporting and fluid-separation component in shell-and-tube heat exchangers.

Condensers

Applications can include industrial condenser equipment where the selected material and design conditions are appropriate.

Chemical Process Equipment

F316Ti tubesheets can be specified for chemical process equipment requiring an austenitic stainless steel forging grade.

Pressure Vessel Components

The forged tubesheet can be supplied as part of pressure vessel and process equipment assemblies subject to the applicable design code.

Packaging

The tubesheet can be supplied with:

• Anti-rust protection
• Plastic wrapping
• Face protection
• Wooden cases
• Plywood cases
• Steel frame packaging
• Customized export packaging

Tube holes and machined sealing surfaces should be protected against impact and contamination during handling and transportation.