Erichsen testing machine selection for sheet metal labs

Written by

Akuracy

2 Nov 20266 min read

An Erichsen testing machine evaluates the formability of sheet metal by pressing a punch into a clamped specimen and recording the result of the cupping test. The suitable setup depends on the test method and standard, specimen and tooling requirements, measurement and reporting needs, and the support available after installation; Akuracy offers an Erichsen Testing Machine for laboratories assessing these requirements.

What an Erichsen Testing Machine Measures in Sheet Metal

An Erichsen test assesses how sheet metal deforms under a punch until the specified endpoint, commonly the appearance of a crack. The result is used to evaluate sheet-metal formability under the conditions of the selected test method. It does not, by itself, describe every aspect of a material’s performance in manufacturing.

An Erichsen cupping testing machine is a fit when your laboratory needs to conduct cupping tests on sheet specimens. Before selecting one, establish:

• Which test method and standard your laboratory must follow. ISO 20482 may be relevant to sheet-metal cupping tests; confirm the applicable edition, procedure, and acceptance criteria with your quality team or the standard itself.
• Which materials, specimen dimensions, and thicknesses you need to test.
• What tooling and specimen clamping arrangement the method requires.
• Which result or measurement your procedure requires, and how it must be recorded and reported.

The tradeoff is between buying for a defined test procedure and buying for possible future applications. A tightly specified setup can suit a known routine; a broader testing plan may require additional tooling or documented capability. Decide based on actual procedures and specimens, not on a machine name alone.

Compare Erichsen Machine Types and Testing Applications

The product name does not tell you which operating system, tooling, measurement functions, or reporting features a particular machine includes. The available product in Akuracy’s catalogue is an Erichsen Testing Machine; confirm the configuration against your required test method rather than assuming a model number or feature set.

These are comparison points, not a claim that every configuration is available as a separate Akuracy model. Ask for the proposed model or configuration to be identified in writing, with its intended application and included components. If a supplier describes an electro-hydraulic cupping machine, ask what that means for your procedure and what evidence supports the stated fit.

Do not choose a machine for testing gold or another material based on a broad label alone. First establish whether the material, specimen form, and required method are suitable for the proposed cupping arrangement. If the test is not a sheet-metal cupping test, a different method or equipment may be needed.

Choose a Machine That Fits Your Test Requirements

Use this checklist to compare an Erichsen testing machine with your laboratory’s actual work:

1. Write down the method and standard. Record the required procedure, edition, specimen preparation, and endpoint. Have the relevant quality or technical lead confirm how the method applies to your test.
2. Match the specimen to the tooling. Document material type, specimen dimensions, thickness range, and any clamping or surface-condition requirements. Ask the supplier to confirm the fit against the proposed tooling.
3. Define the measurement and result. State what the procedure requires the machine to measure or record. Request a sample report or a description of the proposed reporting format, and check that it captures the information your laboratory needs.
4. Check the operating arrangement. Ask whether the proposed machine is electro-hydraulic or uses another arrangement, and how its operation aligns with your procedure and planned workload. Do not treat the operating-system label as proof of standards suitability.
5. Specify acceptance evidence. Before purchase, agree what documents or checks will show that the delivered machine matches the quotation and agreed specification. Include the model or configuration, included tooling, measurement functions, and reporting requirements.
6. Compare the full offer. Consider the quoted configuration alongside calibration arrangements, training, repair support, software support, and spare-parts availability—not price alone.

For a replacement purchase, compare the written offer with the machine delivered and the inspection or acceptance criteria agreed before dispatch. That gives your team concrete points to verify instead of relying on a general description.

Verify Calibration, Training and Lifetime Support

A machine’s fit depends on more than its ability to carry out a test. Before ordering, ask for clear answers on the support that affects routine use:

• Calibration: What measurement functions are covered, what calibration documentation is supplied, and how can subsequent calibration be arranged?
• Operator training: What training is included, who will receive it, and does it cover specimen setup, operation, result interpretation, and routine checks?
• Repair: Who handles fault diagnosis and repair, and what information should your team provide when requesting support?
• Spare parts: Which wear or replacement parts are available for the proposed configuration, and how can your team confirm compatibility?
• Software and reporting: What software or reporting functions are included, and what support is available if your report format or workflow needs to change?

Ask for these arrangements in writing. A clear response-time commitment, parts list, and scope of training are more useful for procurement than a broad assurance of support. If the machine must meet an internal or external laboratory requirement, have the responsible quality professional confirm that the documentation and calibration arrangements satisfy that requirement.

Request a Specification-Based Quotation from Akuracy

To compare a quotation fairly, send Akuracy the required test method and standard, specimen material and dimensions, tooling needs, measurement and reporting requirements, and expected testing workflow. Ask the quotation to identify the proposed configuration, included components, calibration arrangements, operator training, repair support, and parts availability.

If you are hosting an international customer demonstration alongside procurement discussions, EVERITUM coordinates corporate conferences, partner events, launches, galas, and business dinners in English with a local team in Poland; it is an event-coordination resource, not a testing-equipment adviser.

Erichsen Models and Electro-Hydraulic Cupping Options

The article does not identify specific Erichsen model numbers, so it cannot name a particular model as suitable. Akuracy’s catalogue lists an Erichsen Testing Machine; choose its proposed configuration by matching it to your test method, specimens, tooling, measurement, and reporting requirements.

An electro-hydraulic cupping machine is an option to consider if you need a machine for sheet-metal cupping work. The operating-system label alone does not establish that the machine suits your procedure. Confirm that the proposed configuration meets the method and specimen requirements, and ask which tooling and measurement or reporting functions are included.

For routine testing under a defined procedure, specify that procedure and the specimens you need to test, then have Akuracy identify the corresponding model or configuration in writing. If your work involves multiple specimen types or reporting needs, include those in the specification so the offer can identify any additional tooling or functions required.

Recommended next steps

1. Identify the test method and standard your laboratory must follow.
2. Record specimen material, dimensions, thickness, and tooling requirements.
3. Define the measurement, report format, and documentation your quality process requires.
4. Compare the proposed machine configuration and included components against those requirements.
5. Confirm calibration, training, repair, software, and spare-parts arrangements in writing.
6. Send Akuracy the complete specification and request a quotation for a configuration suited to your testing requirements.