DANS 1.4301 Acier inoxydable: Guide complet des propriétés, Utilisations & Normes

Si vous recherchez un appareil polyvalent, acier inoxydable résistant à la corrosion pour les projets quotidiens et industriels, DANS 1.4301 acier inoxydable est un premier choix. En tant qu'équivalent européen de l'AISI 304, il est largement utilisé dans tous les secteurs, de la transformation alimentaire à l'architecture, grâce à ses performances équilibrées. Ce guide couvre tout ce que vous devez savoir, de ses spécifications aux applications du monde réel.

1. DANS 1.4301 Acier inoxydable: Aperçu & Key Specifications

Let’s start with the basics ofDANS 1.4301 acier inoxydable—its composition, normes, et propriétés principales.

Chemical Composition

LeDANS 1.4301 composition is what makes it reliable. It contains 18–20% chromium (pour la résistance à la corrosion) and 8–10.5% nickel (for austenitic structure), with small amounts of manganese (maximum 2.0%) and silicon (maximum 1.0%). This blend creates a metal that’s both strong and ductile.

Normes de l'industrie & Equivalents

DANS 1.4301 is defined by strict European and global standards:

• 1.4301 AISI 304 équivalent: It’s the direct European counterpart to AISI 304, so you can swap them in most projects.
• 1.4301 UNS S30400: The Unified Numbering System identifier, used in North America.
• 1.4301 ASTM A240: ASTM standard for plates/sheets, et 1.4301 DANS 10088-2: European standard for flat products (sheets/plates).

Physical & Propriétés mécaniques

Below is a table of critical properties that makeDANS 1.4301 acier inoxydable so versatile:

Exemple: A kitchen appliance maker usesDANS 1.4301 acier inoxydable for oven doors. C'estaustenitic structure makes it easy to form into curved shapes, and itsBrinell hardness (≈215 HB) resists scratches from daily use.

2. Résistance à la corrosion & Environmental Performance

DANS 1.4301 acier inoxydable is known for its strong corrosion resistance—here’s how it performs in different environments.

Key Corrosion Behaviors

• 1.4301 PREN 18–19: The Pitting Resistance Equivalent Number (PREN) measures resistance to pitting. A PREN of 18–19 means it handles mild chlorides (like indoor plumbing) well.
• 1.4301 atmospheric corrosion: Excellent resistance to dry, humid, and urban air. It’s used for architectural cladding that stays rust-free for decades.
• 1.4301 oxidation resistance up to 870 °C: Maintains strength and resists scaling at high temperatures, making it suitable for heat exchanger shells.
• 1.4301 seawater splash zone limits: Can handle occasional seawater splashes (par ex., coastal building trim) but avoid full submersion—use 316 for underwater parts.

Critical Corrosion Considerations

• 1.4301 pitting corrosion: Low risk in clean environments, but may occur in high-chloride settings (par ex., saltwater pools).
• 1.4301 crevice corrosion threshold: Avoid tight crevices (par ex., unsealed bolts) in wet areas—they can trap moisture and cause corrosion.
• 1.4301 chloride stress corrosion cracking: Low risk at room temperature, but avoid high temperatures (sur 60 °C) and high chlorides together.
• 1.4301 intergranular corrosion after welding: Welding can cause sensitization (carbide precipitation), so post-weld passivation helps prevent this.

Étude de cas: A brewery usesDANS 1.4301 acier inoxydable for piping. The metal’smild chemical resistance handles beer’s acids and sugars, and regular cleaning keeps it rust-free. The piping has lasted 15+ years with no issues.

3. Traitement thermique & Microstructure Control

Proper heat treatment helps maintainDANS 1.4301 acier inoxydable’s performance—here’s what you need to know.

Common Heat Treatment Processes

Critical Considerations

• 1.4301 carbide precipitation range 450–850 °C: Avoid holding the metal at this temperature range for long—carbides form, reducing corrosion resistance.
• 1.4301 sensitization prevention: Use solution annealing after welding to prevent sensitization (which causes intergranular corrosion).
• 1.4301 grain size ASTM 5–8: Controlled heating keeps grain sizes small (ASTM 5–8), balancing strength and ductility.
• 1.4301 sigma phase absence: Unlike ferritic grades, it doesn’t form brittle sigma phase—great for high-temperature parts.

Exemple: A manufacturer of chemical storage tanks usesDANS 1.4301 acier inoxydable. After welding the tank seams, they solution anneal at 1050 °C to restore corrosion resistance—ensuring the tank safely holds mild chemicals.

4. Soudage, Fabrication & Machining Guidelines

DANS 1.4301 acier inoxydable is easy to work with—here are the best practices for welding, fabrication, et usinage.

Welding Tips

• 1.4301 weldability rating: Excellent (noté 9/10)—it welds well with most methods (TIG, MIG, stick).
• 1.4301 no preheat required: Unlike martensitic grades (par ex., 410), it doesn’t need preheating, gain de temps.
• 1.4301 filler metal ER308L: Use this filler for TIG/MIG welding—it matches the base metal’s composition.
• 1.4301 MIG wire 308LSi: Ideal for MIG welding; the silicon improves wire feedability.
• 1.4301 post-weld passivation: Apply a nitric acid solution after welding to boost corrosion resistance.

Usinage & Fabrication

• 1.4301 machining speeds and feeds: Use speeds of 150–250 m/min (tournant) and feeds of 0.1–0.3 mm/rev—avoid overheating.
• 1.4301 tool life with carbide inserts: Carbide tools last 2–3x longer than high-speed steel (HSS) when machining EN 1.4301.
• 1.4301 deep drawability: Excellent—its austenitic structure lets it be deep-drawn into shapes like food cans or sink basins.
• 1.4301 forming limits: Can be bent up to 180° (for thin sheets) without cracking—great for architectural trim.

Étude de cas: An automotive supplier makesDANS 1.4301 acier inoxydable garniture. They use deep drawing to shape the trim, then machine edges with carbide tools. The process produces 50,000+ trim pieces per month with minimal defects.

5. Product Forms, Sizes & Supply Chain

DANS 1.4301 acier inoxydable comes in many forms to fit different projects—here’s what’s available.

Common Product Forms

• 1.4301 stainless steel plate thicknesses: 3–200mm (used for chemical storage tanks, pièces structurelles).
• 1.4301 sheet gauge chart: 26 jauge (0.45 mm) à 8 jauge (4.0 mm) (used for kitchen appliances, garniture).
• 1.4301 coil slit widths: 50–1600 mm (used for mass-produced parts like heat exchanger fins).
• 1.4301 round bar stock: Diameters 5–300 mm (used for fasteners, arbres).
• 1.4301 seamless pipe EN 10216-5: Sizes ½–24 inches (used for chemical piping).
• 1.4301 welded tube EN 10217-7: Sizes ½–12 inches (used for plumbing, brewery lines).

Supply Chain Tips

• 1.4301 flat bar tolerances: Most suppliers offer tolerances of ±0.1 mm for thickness—ideal for precision parts.
• 1.4301 angle iron sizes: Common sizes include 20x20x3 mm to 100x100x10 mm (used for structural supports).
• 1.4301 hollow bar suppliers: Look for ISO 9001-certified suppliers to ensure consistent wall thickness.
• 1.4301 mirror finish sheets: Available in 0.5–5 mm thicknesses (used for elevator panels, display cabinets).

6. Applications industrielles & Use Cases

DANS 1.4301 acier inoxydable is used in countless industries—here are the most common applications.

Applications clés

• 1.4301 équipement de transformation des aliments: Used for mixers, conveyors, and storage bins—its corrosion resistance handles food acids.
• 1.4301 appareils de cuisine: Fridges, fours, and dishwashers—its ductility makes it easy to form, and it resists scratches.
• 1.4301 architectural cladding: Façades de bâtiments, handrails—its atmospheric corrosion resistance keeps it looking new.
• 1.4301 pharmaceutical vessels: Used for drug storage and mixing—meets strict hygiene standards.
• 1.4301 heat exchanger shells: Handles high temperatures (jusqu'à 870 °C) and resists corrosion from coolants.

Real-World Example: A hospital usesDANS 1.4301 acier inoxydable for surgical tables. The metal’s corrosion resistance stands up to frequent cleaning with disinfectants, and its smooth surface is easy to sanitize—meeting medical hygiene standards.

7. DANS 1.4301: Normes, Essai & Attestation

To ensure quality, DANS 1.4301 acier inoxydable must meet strict testing and certification requirements.

Key Standards & Essai

• 1.4301 DANS 10088-3 chemical analysis: This standard specifies the required chemical composition (par ex., 18–20% chromium) pour assurer la résistance à la corrosion.
• 1.4301 EN ISO 9445 tolérances: Defines dimensional tolerances for flat products (sheets/plates) pour assurer la cohérence.
• 1.4301 AD 2000-Merkblatt W2 approval: A European certification for pressure equipment (par ex., réservoirs chimiques) — ensures the metal can handle high pressure safely.

Exemple: A manufacturer of pressure vessels usesDANS 1.4301 acier inoxydable certified to AD 2000-Merkblatt W2. This certification lets them sell their vessels across Europe, as customers trust the metal’s safety.

Yigu Technology’s Perspective on EN 1.4301 Acier inoxydable

Chez Yigu Technologie, we supplyDANS 1.4301 acier inoxydable to food, médical, and architectural clients. Its versatility—great corrosion resistance, fabrication facile, and global standards compliance—makes it a top seller. We offer custom cuts (par ex., mirror finish sheets for elevators) and provide certification documents (DANS 10088-3, AD 2000-Merkblatt W2) to meet client needs. For food clients, we ensure passivation to meet hygiene standards, so their equipment is safe and durable.

FAQ About EN 1.4301 Acier inoxydable

1. Is EN 1.4301 stainless steel magnetic?
   Non! C'est 1.4301 austenitic structure makes it non-magnetic—unlike martensitic (410) or ferritic (430) notes. This is useful for parts that need to avoid magnetic interference (par ex., équipement médical).
2. Can EN 1.4301 be used in seawater?
   It works for 1.4301 seawater splash zone areas (par ex., coastal building trim) but not for full submersion. Its PREN (18–19) is too low for constant seawater exposure—use EN 1.4401 (AISI 316) for underwater parts.
3. What’s the difference between EN 1.4301 et FR 1.4307?
   DANS 1.4307 (AISI 304L) has lower carbon content (maximum 0.03%) than EN 1.4301 (maximum 0.08%). Cela fait 1.4307 less likely to sensitize after welding—choose it for thick welded parts (par ex., large tanks).