DIN 17742 aligns with:
A PDF allows you to overlay tables and compare tolerances side by side.
DIN 17742 is part of a larger family of standards, including:
The alloys in DIN 17742 are specifically engineered for their thermo-mechanical behavior. Their nickel content is carefully balanced to achieve a specific coefficient of thermal expansion (CTE) that, when bonded to a high-expansion side (e.g., manganese-copper or nickel-chromium-iron), creates predictable bending curvature per degree of temperature change. din 17742 pdf
Typical applications in automotive thermostats or refrigerator temperature controls rely on the reproducibility guaranteed by this standard.
Alloy 2.4475 must match the expansion of borosilicate glass. The PDF provides the exact curve of expansion from 20°C to 450°C. A mismatch, even by 5%, results in cracked seals and hermetic failure.
This includes thickness tolerances for cold-rolled strip (e.g., ±0.01 mm for thickness under 0.5 mm), width tolerances, edge camber, and flatness. DIN 17742 aligns with:
Defines the standard's applicability to rolled strips of specific nickel-iron alloys (e.g., NiFe 45, NiFe 50, NiFe 52) with thicknesses typically between 0.1 mm and 3.0 mm, and widths from 5 mm to 200 mm.
Q1: Is DIN 17742 still valid in 2025?
Yes, the 2002 version remains current. No superseding version has been released as of 2025. However, always check with Beuth Verlag for updates.
Q2: Can a DIN 17742 PDF replace an ASTM standard?
No. But you can use it for cross-certification. Many European OEMs (like Siemens, Bosch, ThyssenKrupp) require DIN 17742, while US customers may ask for ASTM F30 or A753. Know your market. A PDF allows you to overlay tables and
Q3: Why do some websites offer free DIN 17742 PDFs?
Most of these are either:
Avoid them.
Q4: Is there an English version of DIN 17742 PDF?
Yes. Beuth Verlag publishes DIN 17742:2002-07 (E). The "E" stands for English. Order that if your team is not fluent in German technical terms (e.g., Wärmeausdehnungskoeffizient = coefficient of thermal expansion).
Q5: Do I need the full standard or just the data sheet?
If you are only selecting a material, a supplier data sheet may suffice. But if you are writing a purchase specification or defending a design in litigation, you need the full PDF.
This report provides an overview of DIN 17742, including its purpose, technical specifications, and relevance for engineering, design, and manufacturing. It does not reproduce the copyrighted standard text but summarizes its known provisions.