Din 17742 Pdf May 2026

The DIN 17742 standard specifies the chemical composition and preferred applications of wrought nickel alloys with chromium. This standard is critical for industries requiring materials that can withstand high temperatures and aggressive corrosive environments, such as aerospace and chemical processing. Overview of DIN 17742

The standard was most recently updated in December 2020 (DIN 17742:2020-12), superseding the September 2002 version. It covers semifinished wrought products—including pipes, sheets, rods, and wire—where chromium is a primary alloying element. Common Material Grades

DIN 17742 defines several specific alloy grades, often identified by their material numbers (W-Nr.). Notable examples include:

NiCr15Fe (W-Nr. 2.4816): Known commercially as Alloy 600, used for its high-temperature oxidation resistance.

LC-NiCr15Fe (W-Nr. 2.4817): A low-carbon version (Alloy 600 LC) for improved resistance to intergranular corrosion.

NiCr23Fe (W-Nr. 2.4851): Commercially known as Alloy 601, frequently used in thermal processing equipment.

NiCr8020 (W-Nr. 2.4869): A high-resistance alloy often used for electrical heating elements. Key Properties and Applications

Alloys governed by this standard are selected for their specialized physical and mechanical characteristics: DIN 17742 - European Standards

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.

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 pdf

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

is a German technical standard that specifies the chemical composition of wrought nickel alloys with chromium.

Below is a feature summary of the standard based on its most recent iterations (2002 and 2020 editions): Standard Overview

Wrought nickel alloys with chromium - Chemical composition ( Nickel-Knetlegierungen mit Chrom - Zusammensetzung Current (2020-12 edition)

It defines the required chemical elements and their weight percentages for various nickel-chromium (Ni-Cr) alloys used in engineering and industrial manufacturing. Key Technical Features

The standard acts as a reference for several high-performance alloys commonly used in high-temperature or corrosive environments. Notable materials covered include: Common Alloys: Includes standard grades like (Material No. 2.4816 / Inconel 600 (Material No. 2.4851 / Inconel 601). Material Properties: The alloys defined under this standard typically offer: Oxidation Resistance: High resistance to scaling at temperatures up to 1000 raised to the composed with power cap C Corrosion Resistance:

Effective against oxidizing media and stress-corrosion cracking. Mechanical Strength:

Excellent creep strength for high-load applications like steam generators and gas turbines. Form Variations:

While DIN 17742 covers chemical composition, physical properties and delivery conditions for specific forms are often linked to sister standards: DIN 17750: Strips and sheets. DIN 17751: Tubes and pipes. DIN 17752: Rods and bars. DIN 17753: Where to Access the PDF

Official copies of the standard are copyrighted and typically must be purchased. You can find the full document at: DIN Media (Official) : Available for purchase as a PDF or paper version. ANSI Webstore : Provides access to the 2002 version with DRM protection. comparison table

of the specific chemical compositions for the most common alloys listed in this standard?

Understanding DIN 17742: The Standard for Wrought Nickel-Chromium Alloys The DIN 17742 standard specifies the chemical composition

If you are working in high-performance metallurgy, aerospace, or chemical processing, you’ve likely come across the designation

. Often sought in PDF format for quick reference, this German standard is the benchmark for the chemical composition of wrought nickel-chromium alloys

Whether you are verifying a material certificate or sourcing a high-performance alloy, here is a breakdown of what DIN 17742 covers and why it matters. What is DIN 17742? DIN 17742 is a technical standard published by the German Institute for Standardization (DIN) . It specifies the required chemical composition

for semi-finished wrought nickel alloys where chromium is a primary alloying element. Current Status: The latest active version was released in December 2020 (DIN 17742:2020-12), replacing the previous 2002 edition.

It covers materials used in environments requiring extreme heat resistance and corrosion protection. Key Materials and Their Compositions

The standard includes several well-known high-performance alloys. For instance, common grades often cross-referenced with DIN 17742 include: Alloy Grade Material No. Key Components Common Applications Ni (72% min), Cr (14-17%), Fe (6-10%) Furnace parts, chemical processing Ni (58-63%), Cr (21-25%), Fe (14%+) High-temperature oxidation resistance LC-NiCr15Fe Low Carbon version Environments prone to intergranular corrosion Why This Standard Matters Nickel-chromium alloys are prized for their scaling resistance

and ability to maintain mechanical strength at temperatures exceeding 1000°C. DIN 17742 ensures that the "recipe" for these alloys is consistent, providing: Nickel-Chrome-Alloys

standard is a critical technical specification that defines the chemical composition and requirements for wrought nickel-chromium (Ni-Cr) alloys

. This standard is essential for ensuring material consistency across high-performance industries like aerospace, chemical processing, and power generation. 1. Scope and Composition

DIN 17742 specifically covers wrought alloys where nickel is the base and chromium is a primary alloying element. These materials are prized for their ability to withstand extreme temperatures and corrosive environments. ANSI Webstore Key Alloys : Common grades listed under this standard include (NiCr15Fe), (NiCr23Fe), and Nimonic 80A (NiCr20TiAl). Chemical Balance

: The standard dictates precise ranges for chromium—often between 15% and 30%—and minor but vital additions like aluminum, titanium, and carbon. VDM-Metals 2. High-Temperature and Corrosion Properties

Materials compliant with DIN 17742 are engineered for "extreme service." Oxidation Resistance Common Questions About DIN 17742 PDF 4

: The high chromium content allows these alloys to form a stable, protective oxide scale that resists scaling at temperatures up to Mechanical Strength

: Many of these alloys, such as Nimonic 80A, are age-hardenable. They maintain significant tensile and creep-rupture strength at elevated temperatures where standard steels would fail. Environmental Stability

: They exhibit excellent resistance to chloride-ion stress-corrosion cracking and various acidic environments, making them "standard" for nuclear reactors and chemical "bubble towers". 3. Industrial Applications

Because DIN 17742 ensures specific material properties, these alloys are found in critical components:

: Used for turbine blades, engine exhaust liners, and seals that must handle high thermal stress. Power & Chemical

: Found in furnace muffles, radiant tubes, and heat-treating baskets. Electronics

: Applied in specialized components like cathode-ray tube spiders and high-temperature springs. VDM-Metals 4. Fabrication Standards

The standard often works in tandem with other DIN specifications for different product forms. For instance,

might be used for rods and bars, while DIN 17742 defines the base chemistry. Compliance ensures that the alloy can be successfully welded (using matching fillers like VDM FM 699 XA) and machined using specific cooling strategies to handle its tendency to work-harden. VDM-Metals

In summary, DIN 17742 provides the metallurgical blueprint for the nickel-chromium superalloys that power modern heavy industry. You can find detailed technical datasheets for these materials on professional portals like VDM Metals Special Metals comparison table

of the specific chemical compositions for the major alloy grades covered by DIN 17742? VDM® Alloy 699 XA

VDM® Alloy 699XA has a higher work hardening than austenitic stainless steels. major cold forming work. VDM-Metals DIN 17742:2002 DE - Nickel-Knetlegierungen mit Chrom

Common Questions About DIN 17742 PDF

4. Mechanical Properties

  • Tensile strength (Rm): Depending on temper, 500–900 N/mm²
  • Yield strength (Rp0.2)
  • Elongation (A80mm)
  • Modulus of elasticity (E ~ 150,000 N/mm² for typical grades)

3. Chemical Composition

Provides strict limits for elements like:

  • Nickel (Ni): 44–46% for Grade 1, 48–50% for Grade 2
  • Iron (Fe): Balance
  • Manganese (Mn), Silicon (Si), Carbon (C): Trace limits
  • Sulfur (S), Phosphorus (P): ≤ 0.025%

6. Testing and Inspection

  • Sampling procedures
  • Chemical analysis methods
  • Tensile test conditions
  • Surface condition requirements (bright, pickled, or ground)

2. Normative References

Lists other standards that are indispensable for application, such as:

  • DIN 1715 (Thermostat bimetals)
  • DIN 50150 (Tensile test)
  • SEP 1940 (Modulus of elasticity determination)
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