EN 1.4622, ASTM UNS S44330 Stainless Steel

EN 1.4622, ASTM UNS S44330 Stainless Steel

EN 1.4622, ASTM UNS S44330 Stainless Steel General Characteristics 1.4622 is a nickel-free, high-chromium (21Cr) ferritic stainless steel with equal corrosion resistance to 304/4301. 1.4622 has excellent deep drawability and is almost ridging free, meaning it is easier to polish and has a lower...
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EN 1.4622, ASTM UNS S44330 Stainless Steel

General Characteristics

1.4622 is a nickel-free, high-chromium (21Cr) ferritic stainless steel with equal corrosion resistance to 304/4301. 1.4622 has excellent deep drawability and is almost ridging free, meaning it is easier to polish and has a lower overall production cost.


1.4622 is a 21% chromium ferritic stainless steel, which can be used in many corrosive environments. Because of its titanium and niobium alloying, 1.4622 can be welded in all dimensions without becoming susceptible to intergranular corrosion. It is possible to use 1.4622 at elevated temperatures, like for instance in automotive exhaust systems. 1.4622 can be supplied with a wide range of functional and aesthetic surface finishes.


Typical Applications

Household, catering and architectural applications (indoor and outdoor)

Tubular products for automotive and process industries

Tanks and process equipment


Product forms, available sizes and finishes

Flat

Product typeFinishesThicknessWidth
Cold rolled coil

2B, 2G, 2K

0,50-3,00

35-1550

Cold rolled sheet

2B, 2G, 2K

0,50-3,00

400-1550

Hot rolled coil, pickled

1E

3,00-5,50

50-1550


Chemical Composition

The typical chemical composition for this grade is given in the table below, together with composition limits given for the 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.


CMnCrNOther

Typical

0.02

21

0.02

Cu:0.4 Ti Nb

ASME II A SA-240

≤0.025

≤1.00

20.0-23.0

≤0.025

Cu:0.30-0.80

ASTM A240

≤0.025

≤1.00

20.0-23.0

≤0.025

Cu:0.30-0.80

EN 10028-7

≤0.030

≤0.80

20.0-24.0

≤0.030

Cu:0.30-0.80 Ti Nb


Mechanical Properties

StandardRp0.2Rp1.0RmElongationRockwellHB

MPa

MPa

MPa

%



Product type: Cold rolled coil and sheet

Typical (thickness 1 mm)

360

365

470




ASME II A SA-240

≥ 205


≥ 390



≤ 187

ASTM A240

≥ 205


≥ 390


≤ 90HRB

≤ 187

EN 10028-7

≥ 300


430-630

≥ 22



Product type: Hot rolled coil and sheet

Typical (thickness 4 mm)

355

365

470




ASME II A SA-240

≥ 205


≥ 390



≤ 187

ASTM A240

≥ 205


≥ 390



≤ 187

Product type: Hot rolled quarto plate

ASME II A SA-240

≥ 205


≥ 390



≤ 187

ASTM A240

≥ 205


≥ 390



≤ 187


Physical Properties

The crystal structure is ferritic, and therefore material is ferromagnetic as soft annealed condition.

DensityModulus of elasticityThermal exp. at 100 °CThermal conductivity

kg/dm3

GPa

10-6/°C

W/m°C

7,7

220

10

21


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