Forta 304/4301
EN 1.4301, ASTM TYPE 304 / UNS S30400

View Forta range datasheet

General characteristics

Forta 304/4301 is a classic 18% chromium, 8% nickel austenitic stainless steel. Forta 304/4301 is an all-purpose product with good resistance to atmospheric corrosion and to many organic and inorganic chemicals.

Typical applications

  • Beer kegs
  • Cutlery
  • Automotive components
  • Tanks and vessels
  • Furniture
  • Structural applications

 

Product forms, available sizes and finishes

Flat

Product typeFinishesThicknessWidth
Cold rolled coil and sheetWork hardened0,33-5,50≤ 1829
Chemical composition

 

The typical chemical composition for this grade is given in the table below, together with composition limits given for this product according to different standards. The required standard will be fully met as specified on the order.

The chemical composition is given as % by mass.

StandardGradeCMnCrNiMoNOther
TypicalForta 304/43010.0418.18.1
ASTM A240/A240MTYPE 304 / UNS S30400<0.07<217.5-19.58.0-10.5<0.10Si:<0.75 P:<0.045 S:<0.030
EN 10088-21.4301<0.07<217.5-19.58.0-10.5<0.10Si:<1 P:<0.045 S:<0.030
Mechanical properties

StandardGradeRp0.2Rp1.0RmImpact strengthRockwellHBHV
  MPaMPaMPaJ
Product type: Cold rolled coil and sheet
Typical (thickness 1 mm)Forta 304/430128531564082HRB
Product type: Hot rolled coil and sheet
Typical (thickness 4 mm)Forta 304/4301285340625175
Product type: Hot rolled quarto plate
Typical (thickness 15 mm)Forta 304/4301270300600

1)Elongation according to EN standard:
A80 for thickness < 3 mm.
A for thickness ≥ 3 mm.
Elongation according to ASTM standard A2” or A50.

 

Corrosion resistance

Pitting corrosion resistanceCrevice corrosion resistance
PRECPTCCT
18<10<0

PRE Pitting Resistant Equivalent calculated using the formula: PRE = %Cr + 3.3 x %Mo + 16 x %N
CPT Corrosion Pitting Temperature as measured in the Avesta Cell (ASTM G 150), in a 1M NaCl solution (35,000 ppm or mg/l chloride ions).
CCT Critical Crevice Corrosion Temperature is the critical crevice corrosion temperature which is obtained by laboratory tests according to ASTM G 48 Method F

 

 

Physical properties

Physical properties according to EN 10088-1 are given in the table below.

 

DensityModulus of elasticityThermal exp. at 100 °CThermal conductivityThermal capacityElectrical resistanceMagnetizable
kg/dm3GPa10-6/°CW/m°CJ/kg°CµΩm
7.920016155000.73No*

*) Austenitic stainless steel grades may be magnetizable to a certain degree after cold deformation, e.g. in temper rolled condition.

Fabrication

More detailed information concerning welding procedures can be obtained from the Outokumpu Welding Handbook, available from our sales offices.

Standards & approvals

The most commonly used international product standards are given in the table below.

 

StandardDesignation
ASTM A240/A240MTYPE 304 / UNS S30400
EN 10088-21.4301