Carbon Steel for Compressed Air Receiver Manufacturing: Tank Shells, Dished Heads & Nozzle Plates

Compressed air receiver tanks are used in industrial compressed air systems to provide temporary air storage, reduce pressure fluctuations and support the operation of compressors and downstream equipment.

For tank manufacturers, the steel purchasing process involves more than selecting a carbon steel plate by thickness.

A receiver may contain a rolled cylindrical shell, formed dished heads, nozzle reinforcement plates, supports and other fabricated components. Different parts can require different material specifications and inspections.

ASTM A516 Grade 70 is one steel grade that may be specified for certain pressure-vessel components. However, its suitability depends on the approved design, material specification, temperature, fabrication requirements and applicable construction code.

This guide explains the carbon steel supply chain behind compressed air receiver manufacturing and provides a practical raw-material purchasing checklist for pressure-vessel OEMs.

1. What Is a Compressed Air Receiver Tank?

An air receiver is a vessel used to store compressed air within a pneumatic system.

Depending on the installation, a receiver may be located before or after air treatment equipment.

Wet receivers can provide storage and support moisture separation upstream of a dryer. Dry receivers can provide air storage downstream of suitable treatment equipment.

Industrial air receiver systems may include:

• Vertical or horizontal pressure vessel bodies.
• Cylindrical steel shells.
• Formed vessel heads.
• Air inlet and outlet connections.
• Pressure gauge and relief-device connections.
• Condensate drainage connections.
• Support legs, saddles or mounting structures.

The final arrangement depends on the approved pressure-vessel design.

Atlas Copco and Kaeser publish technical information describing compressed air receivers and their roles in pressure stabilization, air storage and condensate management.

Industry reference: Atlas Copco – What Is an Air Receiver?.

2. Carbon Steel Products Used in Air Receiver Manufacturing

A compressed air receiver can require several distinct steel product forms.

Pressure-containing shell and head materials must be distinguished from non-pressure structural components.

This is an illustrative material list, not the approved bill of materials of a specific air receiver.

Pressure-retaining components must be manufactured using materials and methods permitted by the applicable design code.

3. ASTM A516 Grade 70 for Tank Shells and Heads

ASTM A516/A516M covers carbon steel plates intended primarily for welded pressure vessels where improved notch toughness is important.

The specification includes Grades 55, 60, 65 and 70, representing different strength levels.

ASTM A516 Grade 70 may be specified for selected compressed air receiver shells and head blanks when the engineering design permits it.

Why the Complete Specification Matters

Ordering only “A516 Grade 70 steel plate” may omit information necessary for the intended pressure-vessel application.

The buyer should confirm:

• Applicable ASTM or ASME material specification and edition.
• Required grade and material product form.
• Nominal plate thickness and allowed tolerance.
• Required plate width and length.
• Heat-treatment and delivery condition.
• Specified mechanical and impact-testing requirements.
• Required supplementary examinations.
• Mill test certificates and material traceability.

The required normalizing condition, impact testing and supplementary examinations must follow the actual specification, thickness and approved vessel design.

No particular impact-test temperature or guaranteed service temperature should be assumed from the grade name alone.

Standard reference: ASTM A516/A516M-25 – Carbon Steel Pressure Vessel Plate.

4. ASTM A516 vs ASTM A36: Pressure Parts and Supports

ASTM A516 and ASTM A36 are not interchangeable material specifications.

ASTM A36/A36M covers carbon structural steel products for specified structural uses.

It may be relevant to certain non-pressure support legs, brackets or base plates when approved by the vessel designer.

However, an ordinary ASTM A36 plate should not automatically be substituted for an approved pressure-vessel shell or head material.

P265GH and A516 Grade 70 must not be treated as automatically equivalent. Their material properties, delivery conditions and acceptance requirements must be reviewed separately.

Substitution between material specifications requires approval by the responsible design authority.

5. EN 10028-2 and European Pressure Vessel Plate

International air receiver manufacturers may work with ASTM, ASME or European material specifications, depending on the destination market and governing equipment rules.

EN 10028-2:2017 covers specified non-alloy and alloy steel flat products for pressure purposes with elevated-temperature properties.

P265GH is one of the commonly referenced grades within this material family.

For European projects, the purchasing team should verify the applicable material standard, grade, required inspection documents and the pressure-equipment regulatory framework.

The steel plate’s compliance with EN 10028-2 does not independently establish conformity of the complete pressure vessel to applicable legislation.

Reference: BS EN 10028-2:2017 – Steel Flat Products for Pressure Purposes.

6. Dished Head Blanks: Forming and Final Thickness

Air receiver manufacturers may form pressure-vessel heads from approved steel plate blanks.

Head geometry can vary according to the selected design and construction code.

The starting plate thickness and blank dimensions must allow for the approved forming method and required finished dimensions.

Important Manufacturing Checks

• Initial plate material specification and condition.
• Approved head drawing and blank geometry.
• Forming method and manufacturing tolerances.
• Any applicable thinning allowance.
• Minimum required finished thickness.
• Required post-forming heat treatment, if applicable.
• Material identification and examination requirements.

A plate that satisfies its incoming material specification does not automatically qualify the completed formed head.

The head manufacturer must perform the required fabrication and acceptance checks.

7. Welded Shells, Nozzle Plates and Pressure Vessel Compliance

Rolled shell plates may be welded into cylindrical assemblies according to an approved manufacturing procedure.

Nozzle openings and reinforcement components require additional engineering attention because they affect the pressure boundary and local stresses.

Requirements for welding, forming, nondestructive examination and pressure testing depend on the applicable construction code.

ASME Section VIII Division 1

ASME BPVC Section VIII Division 1 contains rules addressing relevant pressure-vessel design, fabrication, inspection, testing and certification.

Where the project requires ASME construction, the equipment manufacturer must follow the applicable code provisions and authorized certification process.

Raw steel certification is not a substitute for completed vessel compliance.

Official reference: ASME BPVC Section VIII Division 1.

8. Condensate Corrosion and Carbon Steel Air Receivers

Compressed air systems can generate condensate as moisture separates from the compressed air.

If water accumulates inside a carbon steel receiver, internal corrosion may become a concern.

The degree of corrosion risk depends on the operating environment, compressed air quality, drainage, material condition and maintenance.

Protective coatings or alternative materials may be specified for certain equipment designs.

However, an internal coating must be approved for the actual pressure-vessel service, and coating selection does not replace appropriate vessel design or inspection.

Condensate drainage and pressure-relief arrangements must also follow the approved equipment requirements.

Air receiver maintenance and moisture management are explained in Kaeser’s Air Receiver Technical Guide.

9. Material Inspection and Traceability

Pressure-vessel fabricators should agree on material documentation and inspection before steel purchasing.

Relevant incoming checks can include:

• Verification of material grade and product standard.
• Review of heat number and mill test certificate.
• Thickness and dimensional inspection.
• Confirmation of heat-treatment condition.
• Review of specified mechanical and impact tests.
• Supplementary examination records where required.
• Material identification transfer after cutting.
• Verification of the approved component drawing.

For ASTM pressure-vessel plate purchasing, ASTM A20/A20M provides general requirements applicable to specified pressure-vessel plate products.

Supplementary requirements must be identified in the order where applicable rather than assumed automatically.

For JUDE’s publicly described inspection procedures, see Quality Control and Inspection.

10. Illustrative Steel BOM for Air Receiver OEMs

This BOM is illustrative and must not be used as a substitute for a certified pressure-vessel design.

11. Frequently Asked Questions

Is ASTM A516 Grade 70 suitable for compressed air receiver tanks?

It may be suitable where the approved design and construction code permit the material. The required thickness, service temperature, delivery condition, testing and inspection must be confirmed.

Can ASTM A36 be used for an air receiver shell?

It should not be substituted automatically for an approved pressure-vessel material. ASTM A36 may be relevant to certain non-pressure structural parts when permitted by the equipment design.

Are A516 Grade 70 and P265GH equivalent?

No automatic equivalence should be assumed. Both are pressure-purpose steel grades, but their material specifications, properties and delivery requirements must be compared under the applicable design rules.

Does an A516 plate certificate prove ASME compliance?

No. A material test certificate documents raw-material requirements. Complete ASME pressure-vessel compliance requires the applicable design, fabrication, inspection, testing and certification processes.

Can carbon steel air receivers corrode internally?

Yes. Condensate accumulation and operating conditions may contribute to internal corrosion. The system should follow its approved drainage, protection, inspection and maintenance requirements.

Can JUDE provide finished ASME-certified air receivers?

JUDE publicly lists carbon steel raw materials and related industrial products. Finished pressure-vessel fabrication and certification should not be assumed from the materials catalogue and must be confirmed separately.

What information should a pressure vessel OEM send for a plate quotation?

Provide the complete material specification, grade, dimensions, heat-treatment condition, required testing, quantity, material certificates, applicable drawings and delivery destination.

12. Request Carbon Steel Materials from JUDE

13. Technical and Industry References

1. Atlas Copco – Air Receiver Applications.
2. Kaeser – Compressed Air Receiver Systems.
3. ASTM A516/A516M-25 – Pressure Vessel Steel Plate.
4. ASTM A20/A20M-20 – General Pressure Vessel Plate Requirements.
5. ASTM A36/A36M-19 – Carbon Structural Steel.
6. BS EN 10028-2:2017 – Steel for Pressure Purposes.
7. ASME BPVC Section VIII Division 1 – Pressure Vessels.

Engineering notice: This article provides general steel raw-material selection and procurement information. It does not establish a pressure-vessel design, pressure rating, corrosion-life guarantee, material substitution approval or completed equipment certification.

Material selection, forming, welding, examination, pressure testing, corrosion protection and final acceptance must follow the applicable pressure-vessel code, approved drawings and local regulatory requirements.

The described applications are illustrative. No commercial relationship between JUDE and any referenced equipment manufacturer is implied. Exact steel grades, specifications, stock availability, processing capabilities and delivery arrangements must be confirmed before purchase.