A240 A240m

ASTM A240 / A240M is one of the most important international standards for stainless steel plate, Blatt, and strip used in pressure vessels and general industrial applications. It defines the chemical composition, mechanische Eigenschaften, heat treatment conditions, and quality requirements for stainless steel flat products.

This standard is widely used in chemical processing, Konstruktion, Energie, Marine, und Lebensmittelindustrie.

What is ASTM A240 / A240M?

• ASTM A240: Standard specification for chromium and chromium-nickel stainless steel plate, Blatt, and strip
• A240M: Metric version of ASTM A240

It covers a wide range of stainless steel grades including austenitic, ferritisch, martensitisch, und Duplex-Edelstähle.

Key Characteristics of A240 Stainless Steel Plate

1. Große Auswahl an Edelstahlsorten

ASTM A240 covers many commonly used stainless steel grades such as:

• 201, 202
• 301, 304, 304L
• 316, 316L
• 321, 347
• 309, 310S
• 410, 420, 430
• 2205, 2507 Duplex-Edelstahl

👉 It is a universal material standard for stainless steel flat products

2. Suitable for Pressure and Structural Applications

A240 stainless steel plates are widely used in:

• Druckbehälter
• Wärmetauscher
• Lagertanks
• Industrielle Rohrleitungssysteme
• Strukturelle Fertigung

The material is designed to meet strict mechanical strength and safety requirements.

3. Controlled Chemical Composition

Each grade under A240 has clearly defined limits for:

• Chrom (Cr)
• Nickel (In)
• Molybdän (Mo)
• Kohlenstoff (C)
• Stickstoff (N)
• Mangan (Mn)
• Silizium (Und)

This ensures stable corrosion resistance and mechanical performance.

4. Ausgezeichnete Korrosionsbeständigkeit (Depending on Grade)

Because A240 includes multiple stainless steel families, corrosion resistance varies:

• Austenitische Sorten (304, 316): excellent general corrosion resistance
• Duplex grades (2205, 2507): superior chloride resistance
• Ferritische Sorten (430): moderate atmospheric resistance
• Martensitische Sorten (410, 420): wear resistance with moderate corrosion resistance

5. Good Mechanical Performance

A240 stainless steel plates generally offer:

• Hohe Zugfestigkeit (grade dependent)
• Gute Duktilität
• Excellent toughness (austenitic grades)
• Hohe Härte (martensitic grades)
• Gute Ermüdungsbeständigkeit

6. Excellent Fabrication Performance

Most A240 stainless steels are suitable for:

• Schneiden
• Schweißen
• Biegen
• Rollen
• Bearbeitung
• Oberflächenveredelung (2B, BA, Nr.1, poliert)

Austenitic grades are especially known for excellent formability and weldability.

Common Applications of ASTM A240 Stainless Steel Plate

A240 stainless steel plates are used across many industries:

• Ausrüstung für die chemische Verarbeitung
• Lebensmittelverarbeitungsmaschinen
• Pharmazeutische Ausrüstung
• Wärmetauscher
• Druckbehälter
• Meerestechnik
• Construction and architectural structures
• Oil and gas systems
• Power generation equipment
• Industrielle Lagertanks

A240 Stainless Steel vs Other Standards