If you decide to ignore the safety warnings and search for the PDF on file-sharing sites (like Scribd, Issuu, or forums), proceed with caution:
The standard divides surface irregularities into four distinct types, each with its own set of severity levels:
Without the actual reference photographs, these descriptions are virtually useless. This is why the ASTM E125 reference photographs PDF is so highly sought after.
Type II: Non-Metallic Inclusions (Stringers)
Type III: Shrinkage
Type IV: Seams and Laps
Type V: Porosity
Type VI: Non-Relevant Indications
ASTM International offers a platform called ASTM Compass. astm e125 reference photographs pdf free download
No legal free download exists from authentic sources. ASTM standards are sold by ASTM International to fund development and updates.
However:
If you are looking for the content of the photographs to understand what they show, here is a description of the categories typically found in the standard.
The standard is generally divided by the type of discontinuity. The photographs are usually black and white, showing bright indications against a dark background (typical of fluorescent MPI) or dark indications on a light background (visible MPI). If you decide to ignore the safety warnings
Ask your quality department. Most ISO 9001 or ASME-certified foundries already own a site license for ASTM standards. The PDF is likely sitting on a shared network drive.
Here is the catch with downloading a text-only PDF of this standard.
ASTM E125 is not a text document; it is a collection of high-resolution images. The value lies in the Grayscale Resolution.
The Danger: If you are using a low-resolution pirated PDF to approve a structural aircraft part, you are risking lives and liability. You cannot judge a radiographic standard on a pixelated scan. Type VI: Non-Relevant Indications