Din 1624 - Standard Pdf
The standard mandated that the wire be free from scale, cracks, and seams. It required torsion tests (minimum number of twists before fracture) and bend tests for smaller diameters.
DIN 1624, titled "Steel Wire for Mechanical Springs; Technical Conditions of Delivery" (originally Massive Federn aus Stahldraht), was a German standard published by Deutsches Institut für Normung (DIN). It specifically covered unalloyed or low-alloy steel wire, cold-drawn, intended for the manufacture of mechanical springs—typically those subject to static or moderately dynamic loads.
It is vital for engineers and procurement officers to note that DIN 1624 is no longer the active standard. As part of the European harmonization of standards, DIN 1624 was replaced in the late 1990s and early 2000s. din 1624 standard pdf
When specifying new products, one should refer to the current EN standards. However, if maintenance work is being performed on machinery built prior to 2000, the original DIN 1624 specifications (found in older PDF archives) may still be relevant to ensure material compatibility.
One of the most sought-after tables in the DIN 1624 standard PDF is the tensile strength range, which varied by wire diameter. For example: The standard mandated that the wire be free
The standard defined several steel grades, each with a specific chemical composition and mechanical property range. The most common included:
| Steel Grade (DIN) | Carbon Content (C%) | Tensile Strength (MPa) | Typical Use | | :--- | :--- | :--- | :--- | | St 2 (or RRSt 2) | ≤ 0.10% | 280 – 420 | Simple bending, non-critical deep drawing | | St 3 (or RRSt 3) | 0.08 – 0.15% | 320 – 460 | General cold forming, washers, clips | | St 4 (or RRSt 4) | 0.12 – 0.22% | 370 – 520 | High-strength stampings, springs, saw blades | | St 5 | 0.18 – 0.28% | 440 – 620 | High wear resistance, leaf spring strips | When specifying new products, one should refer to
Note: The prefix "RRSt" stood for Rimmed or Rephosphorized Steel for improved drawing properties.
