EN 1.4541, ASTM TYPE 321 / UNS S32100 Stainless Steel

EN 1.4541, ASTM TYPE 321 / UNS S32100 Stainless Steel

EN 1.4541, ASTM TYPE 321 / UNS S32100 Stainless Steel General Characteristics 321/4541 is a titanium-stabilized austenitic stainless steel with improved intergranular corrosion resistance for an extended temperature range. 321/4541 is an austenitic stainless steel that belongs to the standard...
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EN 1.4541, ASTM TYPE 321 / UNS S32100 Stainless Steel

General Characteristics

321/4541 is a titanium-stabilized austenitic stainless steel with improved intergranular corrosion resistance for an extended temperature range. 321/4541 is an austenitic stainless steel that belongs to the standard CrNi stainless steel family. 321/4541 can be welded in all dimensions without becoming susceptible to intergranular corrosion.


The austenitic CrNi standard grades are the most widely used group of stainless steels. Their well-balanced material properties make them suitable for the fabrication of many products. Due to its titanium content, 321/4541 can be used at elevated temperatures. For high-temperature applications, the use of the optimized high-temperature Therma 321H/4878 is recommended.


321/4541 is available in many product forms and dimensions, often also from many stainless steel stockholders. Polishing of 321/4541 is limited due to its titanium alloying.


Typical Applications

Annealing covers

Stack liners

Automotive exhaust systems

Welded pressure vessels

Flanges and valves


Product forms, available sizes and finishes

Flat

Product typeFinishesThicknessWidth
Black hot band

1U

2,40-10,00

1000-1550

Cold rolled coil

2B, 2BB, 2C, 2D, 2E, 2G, 2H, 2J, 2K, 2M, 2R

0,05-6,35

3-1610

Cold rolled sheet

2B, 2BB, 2D, 2E, 2G, 2H, 2J, 2K, 2M, 2R

0,20-6,35

18-2050

Hot rolled coil, pickled

1C, 1D, 1E, 1G, 1M, 1U

1,36-10,00

35-1610

Precision strip

2H, 2R

0,05-1,50

3-649

Quarto plate

1D, 1G

5,00-130,00

400-3200


Long

Product type
ThicknessWidth

Bloom


395,00-405,00

295-305

Cast billet


127,00-180,00

127-180

Cast slab


165,00-305,00

1000-1580

Cold drawn bar hex


8,00-25,40

8-25

Cold drawn bar round


6,00-25,40

6-25

Cold drawn bar square


8,00-22,00

8-22

Forged billet round


200,00-230,00

200-230

Forged billet square


200,00-230,00

200-230

Hot rolled / Black bar round


75,00-230,00

75-230

Peeled / turned bar round


70,00-170,00

70-170

Rolled billet round


90,00-200,00

90-200

Rolled billet square


75,00-200,00

75-200

Wire rod (Rod coil) hex


9,00-27,00

9-27

Wire rod (Rod coil) round


5,00-27,00

5-27

Wire rod (Rod coil) square


9,00-24,00

9-24



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.


CMnCrNiMoN

Typical

0.04


17.3

9.1



Ti

ASME II A SA-240

≤0.08

≤2.00

17.0-19.0

9.0-12.0


≤0.10


ASTM A240

≤0.08

≤2.00

17.0-19.0

9.0-12.0


≤0.10


EN 10028-7

≤0.08

≤2.00

17.0-19.0

9.0-12.0




EN 10088-2

≤0.08

≤2.0

17.0-19.0

9.0-12.0




EN 10088-4

≤0.08

≤2.0

17.0-19.0

9.0-12.0




GOST 5632-72

≤0.08

≤2.0

17.00-19.00

9.00-11.00

≤0.35

≤0.10


GOST 5632-72

≤0.12

≤2.0

17.0-19.0

9.0-11.0

≤0.35

≤0.10


GOST 5632-72 Chemical analysis

≤0.08

≤2.0

17.00-19.00

9.00-11.00

≤0.3

≤0.10


GOST 5632-72 Chemical analysis

≤0.12

≤2.0

17.0-19.0

9.0-11.0

≤0.35

≤0.10


IS 6911

≤0.08

≤2.0

17.0-19.0

9.0-12.0

≤0.70

≤0.10


RM 2/1039-02

≤0.08

≤2.00

17.0-19.0

9.0-12.0




RM 2/1077-02

≤0.08

≤2.00

17.0-19.0

9.0-12.0




TLV936002

≤0.08

≤2.00

17.0-19.0

9.0-12.0






Mechanical Properties

The mechanical properties of the available products in soft annealed condition at room temperature are given in the table below. In addition to these values, several of the chromium-nickel grades is available in temper rolled condition with higher mechanical strength. 


Moderate strengths can be reached at elevated temperatures (~550 °C/1022 °F). Temperatures for excessive scaling are close to 850 °C/1562 °F. This grade, along with other austenitic corrosion-resistant steels, exhibits very high ductility and high elongation to fracture. It is not susceptible to brittle fracture in the solution annealed condition.


StandardRp0.2Rp1.0RmElongationRockwellHB

MPa

MPa

MPa

%



Product type: Cold rolled coil and sheet

Typical (thickness 1 mm)

260

285

625

70



ASME II A SA-240

≥ 205


≥ 515



≤ 217

ASTM A240

≥ 205


≥ 515


≤ 95HRB

≤ 217

EN 10028-7

≥ 220

≥ 250

520-720

≥ 40



EN 10088-2

≥ 220

≥ 250

520-720

≥ 40



EN 10088-4

≥ 220

≥ 250

520-720

≥ 40



GOST 5632-72

≥ 235

≥ 250

≥ 535

≥ 40



GOST 5632-72

≥ 230

≥ 260

540-670

≥ 45



IS 6911

≥ 205


≥ 515


≤ 95HRB

≤ 217

Product type: Hot rolled coil and sheet

Typical (thickness 4 mm)

265

295

590

70


165

ASME II A SA-240

≥ 205


≥ 515



≤ 217

ASTM A240

≥ 205


≥ 515



≤ 217

EN 10028-7

≥ 220

≥ 250

520-720

≥ 40



EN 10088-2

≥ 220

≥ 250

520-720

≥ 40



EN 10088-4

≥ 220

≥ 250

520-720

≥ 40



GOST 5632-72

≥ 235

≥ 250

≥ 535

≥ 40



GOST 5632-72

≥ 230

≥ 260

540-670

≥ 45



IS 6911

≥ 205


≥ 515


≤ 95HRB

≤ 217

Product type: Hot rolled quarto plate

Typical (thickness 15 mm)

250

290

570

55



ASME II A SA-240

≥ 205


≥ 515


≤ 95HRB

≤ 217

ASTM A240

≥ 205


≥ 515


≤ 95HRB

≤ 217

EN 10028-7

≥ 200

≥ 240

500-700

≥ 40



EN 10088-2

≥ 200

≥ 240

500-700

≥ 40



EN 10088-4

≥ 200

≥ 240

500-700

≥ 40



IS 6911

≥ 205


≥ 515


≤ 95HRB

≤ 217

RM 2/1039-02

≥ 200

≥ 240

500-700

≥ 40



RM 2/1077-02

≥ 200

≥ 240

500-700

≥ 40



TLV936002

≥ 200

≥ 240

500-700

≥ 40



Product type: Wire rod

Typical

250

290

570

55




Physical Properties

DensityModulus of elasticityThermal exp. at 100 °CThermal conductivity

kg/dm3

GPa

10-6/°C

W/m°C

7.9

200

16,0

15


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