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How to specify an Aluminum Casting

What to put on an RFQ for Aluminum Casting: the ratings, documents, and constraints that change the quote.

25 Oct 2026 · 3 min read · Tradinor Desk

Specification points for Aluminum CastingTRADINOR · FIGUREWhat to lock for Aluminum CastingTemper or conditionDimensionsSurfaceCertificate
Put these on the RFQ for Aluminum Casting before you compare prices.

A buyer searching for Aluminum Casting is usually trying to stop a bad substitute. A metal product is specified by alloy, temper or grade, dimensions, and the certificate. The notes below are selection criteria for an Aluminum Casting. They are not a catalog promise. Confirm every rating on the current datasheet, drawing, or test report for the revision you will receive.

What has to be true of Aluminum Casting

A metal product is specified by alloy, temper or grade, dimensions, and the certificate. For an Aluminum Casting, start from the duty, then the interface to the rest of the machine or the room, then the document that proves the claim. A lower price that leaves one of those blank is a different product.

Aluminum Casting is easy to confuse with Hex Bar. If the quote could be read as either, add the line that separates them: the rating, the fitment, or the standard named below. Link the drawing number to that line so receiving inspection can reject the wrong one.

Numbers that change the quote

Line What to write for Aluminum Casting
Temper or condition Temper, hardness, or heat-treat condition.
Dimensions Thickness, width, length, and tolerance.
Surface Mill finish, coated, or a stated roughness.
Certificate A mill certificate of the type the job requires, such as an EN 10204 type if that is what you need.
Quantity Weight or pieces, and the bundle.
Alloy The grade designation, not only steel or aluminum.

How to compare two offers

Lay both quotes for Aluminum Casting on one sheet and line up temper or condition, dimensions, and surface. If a cell is empty, the offer is not finished. Ask for the missing line in writing. When those match, the honest difference is lead time, the test evidence, and who carries the warranty. Do not average a fully specified Aluminum Casting with a cheaper line that omitted temper or condition.

Documents worth having before the deposit

Ask for the certificate type with the grade. The file should name Aluminum Casting and the revision, not only the supplier’s homepage. A factory quality certificate such as ISO 9001 can sit beside that file. It does not replace it.

Failures that show up after delivery

  • Ordering stainless without the alloy.
  • Leaving temper off a sheet that will be formed.
  • Accepting a trader’s stamp in place of a mill certificate.

On an Aluminum Casting, the expensive version of the first mistake is discovering it after the goods are in the crate. Put the rejection condition in the purchase order while the supplier can still restate the offer.

A worked RFQ line

Use this shape, then replace the brackets with your duty: “Aluminum Casting — State alloy, temper, dimensions, surface, and certificate type.” That sentence is a template, not a rating of any brand. If a supplier’s datasheet uses different units, convert them onto this sheet so the next offer can be compared.

Where words like automotive grade belong

Searches often add a constraint to Aluminum Casting: automotive grade, or outdoor. Keep those on this page. Automotive grade is a temperature, vibration, and documentation claim. Ask which AEC or customer spec is actually met, and for which part number. Outdoor means UV, temperature cycle, and corrosion, not only a gasket. Name the climate and the years the gasket is expected to last. If you need a third constraint, add it as another line on the same drawing. A second URL that only swaps the adjective does not give a buyer a second fact.

Related in this section: how to specify Hex Bar.

Questions buyers actually ask

What should an RFQ for Aluminum Casting include?

State alloy, temper, dimensions, surface, and certificate type.

Is a cheaper Aluminum Casting the same part?

Only if temper or condition, dimensions, and the documents match. A missing line is a different offer.

Do waterproof, OEM, or IP words need their own page?

No. For Aluminum Casting they are extra lines on this specification. Ask for the test or the drawing that gives the word a value.