Din 17742 Pdf Updated -

DIN 17742 is a critical German standard that specifies the chemical composition and preferred applications of wrought nickel-chromium alloys. These high-performance materials are essential in industries requiring exceptional heat and corrosion resistance, such as aerospace, chemical processing, and power generation. Overview of DIN 17742

The standard provides a framework for manufacturers to ensure the consistency of semi-finished wrought nickel alloy products where chromium is the primary alloying element. Standard Number: DIN 17742 Current Version: 2020-12 (replaces the 2002-09 version)

Scope: Chemical composition and application areas for wrought Ni-Cr alloys Document Length: Approximately 9 pages Common Material Grades Under DIN 17742

The standard covers several specific material numbers (W-Nr.) and alloy designations that are widely used in industrial applications: DIN 17742 - Accuris Standards Store din 17742 pdf

DIN 17742 is a German technical standard that specifies the chemical composition of wrought nickel-chromium (NiCr) alloys. The current version of this standard is DIN 17742:2020-12, which replaced the 2002 version. Guide to DIN 17742 1. Scope and Application

This standard defines the required chemical makeup for semifinished wrought nickel products where chromium is the primary alloying element. These alloys are designed for high-performance environments requiring:

High-Temperature Durability: Used in heating elements, aerospace engine parts, and gas turbines. DIN 17742 is a critical German standard that

Corrosion Resistance: Ideal for chemical processing vessels, pipelines, and nuclear engineering components.

Specialized Forms: Applicable to sheet, strip, plate, tube, bar, wire, and forging stock. 2. Common Alloy Grades

DIN 17742 covers several widely used industrial grades, often cross-referenced with Material Numbers (W.-Nr.) or UNS designations: DIN 17742 - European Standards Adherence to DIN 17742 ensures interchangeability

8. Typical Applications Requiring DIN 17742

• Automotive (valve springs, suspension elements)
• Mechanical engineering (actuators, couplings)
• Precision instruments (electrical contacts, measuring devices)
• Consumer goods (switches, furniture, toys)

Adherence to DIN 17742 ensures interchangeability, calculability, and quality of compression springs across suppliers.

Case 2: MRI Machine Magnetic Shielding

Mu-metal (2.4499) requires a specific annealing cycle in hydrogen atmosphere. The DIN 17742 PDF includes mandatory notes on heat treatment to achieve the specified permeability (μ4 ≥ 60,000). A non-compliant alloy will allow stray magnetic fields, ruining image quality.

4. Key Technical Parameters

| Parameter | Specification in DIN 17742 | |-----------|----------------------------| | Wire material | Spring steel (e.g., DIN EN 10270-1, -2) | | Spring index (w = D/d) | 4 to 15 (recommended range) | | End types | Closed, closed and ground, open (unground) | | Free length tolerance | Class 1 (tighter) and Class 2 (standard) | | Outer diameter tolerance | ±1% to ±2% depending on wire diameter | | Squareness tolerance | Max. 1–3 degrees depending on length/diameter ratio |

The Ultimate Guide to DIN 17742 PDF: Nickel-Iron Alloys, Standards, and Technical Specifications

Section 5: Tolerances on Dimensions and Shape

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.