Din 53357 Pdf May 2026

Report: DIN 53357 (PDF)

6. Preparation of Test Specimens

6.1 Sampling: Samples shall be taken from the official sample in accordance with DIN 53350. No specimen shall be taken closer than 50 mm to the edge of the skin/hide.

6.2 Shape and Dimensions: The standard specimen shape is typically rectangular. The dimensions according to the classic DIN methodology are generally:

• Length: 100 mm (min)
• Width: 25 mm
• Cut: A slit is made in the middle of the length, perpendicular to the long axis.

(Note: Specific dimensions may vary depending on whether the single-edge or double-edge method is being employed under this standard's framework. Users often utilize a standardized die cutter to ensure consistency).

6.3 Conditioning: Specimens must be conditioned in a standard atmosphere as defined in DIN 50014 (Standard atmosphere 23/50, i.e., 23°C ± 2°C and 50% ± 5% relative humidity) for at least 24 hours prior to testing. din 53357 pdf

9. Test Report

The test report shall include the following information:

• Reference to this standard (DIN 53357).
• Type and origin of the leather.
• Direction of testing (parallel or perpendicular to the backbone).
• Thickness of specimens.
• Maximum tear force and calculated tear strength.
• Any deviations from the standard procedure.

Where to Get the Genuine DIN 53357 PDF

⚠️ Important: DIN standards are copyright-protected. Free PDFs from unofficial sites are often outdated, incomplete, or illegal copies.

To obtain a legitimate copy:

1. DIN Media (beuth.de): The official publisher. Purchase a single-user PDF (downloadable immediately).
2. National Standards Bodies: e.g., ANSI (USA), BSI (UK) often resell DIN standards.
3. University or Corporate Licenses: Check if your institution has a standards subscription (e.g., via Perinorm or TechStreet).

DIN 53357 vs. Other Standards (ASTM D471, ISO 1817)

It is common to confuse DIN 53357 with international equivalents. Here is a quick comparison:

| Standard | Title | Key Difference | | :--- | :--- | :--- | | DIN 53357 | Testing of rubber and plastics – liquid media exposure | German standard; historically used more in Central Europe. Often references specific test fluids (e.g., IRM 901, Fuel C). | | ISO 1817 | Rubber, vulcanized or thermoplastic – Determination of the effect of liquids | International version. Very similar in methodology. Many modern labs treat DIN 53357 as equivalent to ISO 1817. | | ASTM D471 | Standard Test Method for Rubber Property—Effect of Liquids | US standard. Uses different reference oils (e.g., ASTM Oil No. 1, 2, 3 vs. IRM oils). Temperatures may vary. |

Important: When a client asks for a DIN 53357 PDF, verify whether they explicitly require the German method or if they accept ISO 1817. Many modern testing houses have replaced DIN 53357 with ISO 1817, but older specifications still cite the DIN number. Report: DIN 53357 (PDF) 6

Step 2: Fluid Selection

The standard describes various test liquids, including:

• Oils: IRM 901, IRM 902, IRM 903 (replace old ASTM No. 1, 2, 3)
• Fuels: FAM A, FAM B, Fuel C (for ethanol blends)
• Other: Brake fluids, hydraulic oils, specialist coolants.

Summary

DIN 53357 defines methods for measuring and specifying the sound absorption and sound absorption coefficient of materials used in acoustical applications. It provides standardized procedures to obtain repeatable, comparable data for acoustic materials in laboratories and field conditions.

Why is DIN 53357 Crucial for Industry?

Step 4: Measurement & Calculation

After removal, specimens are wiped, weighed, and measured again. Hardness and tensile tests are performed within 30–60 minutes. Length: 100 mm (min) Width: 25 mm Cut: