Stainless steel grade · Austenitic

AISI 304L · EN 1.4307

Low-carbon 304 that stays corrosion resistant after welding; the standard for food, beverage and welded constructions.

Equivalents and designations

The same grade is named differently in each standard. Use the table to check a match.

SystemDesignation
AISI / ASTMAISI 304L
EN material number1.4307
EN steel name (DIN EN 10088)X2CrNi18-9
UNSS30403
JISSUS304L
Look up other equivalents →

Chemical composition

C max.
≤ 0.03
Cr
17.5–19.5
Ni
8–10.5
Mo
—
Other
—

Typical values, wt %, per EN 10088-2 and ASTM A240.

Mechanical and physical properties

Structure
Austenitic
Rm (MPa)
485
Rp0.2 (MPa)
170
A (%)
40
PREN
18
Corrosion
Level 3 of 5
Weldability
Good
Magnetic
No
Density
7.93 g/cm³

ASTM A240 minimums for annealed material; a dash means the value depends on product form.

Typical uses

  • Welded constructions
  • Tanks and pipework for food and drink
  • Chemical equipment with heavy welding

What we supply in this grade

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Sheet AISI 304L → Pipe AISI 304L →

Related grades

AISI 303AISI 304AISI 310SAISI 316AISI 316LAISI 316TiAISI 321

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The data is for guidance and does not replace the heat certificate. The binding values are those of the standard and the manufacturer's certificate.