EN 1.4307, ASTM TYPE 304L / UNS S30403 Stainless Steel

EN 1.4307, ASTM TYPE 304L / UNS S30403 Stainless Steel

EN 1.4307, ASTM TYPE 304L / UNS S30403 Stainless Steel General Characteristics 304L/4307 is a low-carbon alternative to 304/4301. The lower carbon content minimizes carbide precipitation as a result of heat input, for example during welding, giving improved resistance against intergranular...
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EN 1.4307, ASTM TYPE 304L / UNS S30403 Stainless Steel

General Characteristics

304L/4307 is a low-carbon alternative to 304/4301. The lower carbon content minimizes carbide precipitation as a result of heat input, for example during welding, giving improved resistance against intergranular corrosion. It’s suitable for a wide variety of applications that require good formability and weldability, and can be delivered with a variety of surface finishes.


304L/4307 is an austenitic stainless steel that belongs to the standard CrNi stainless steel family.

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.


304L/4307 is commonly available from many stainless steel stockists in many product forms and dimensions. 304L/4307 is also available in the temper rolled condition with higher strength.


Typical Applications

Food and beverage industry equipment

Chemical and pharmaceutical industry equipment

Heat exchangers

Storage tanks and containers

Pipes

Flanges and valves


Product forms, available sizes and finishes

Flat

Product TypeFinishesThicknessWidth
Black hot band

1U

1,50-12,70

800-2070

Cold rolled coil

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

0,05-6,65

3-2070

Cold rolled sheet

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

0,25-7,00

18-2070

Hot rolled coil, pickled

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

1,36-12,70

35-2070

Precision strip

2H, 2R

0,05-1,50

3-649

Quarto plate

1D, 1G

5,00-130,00

400-3200


Long

Product TypeThicknessWidth

Bloom

395,00-405,00

295-305

Cast billet

127,00-200,00

127-200

Cast slab

165,00-305,00

1000-1585

Cold drawn bar hex

8,00-25,40

8-25

Cold drawn bar round

5,50-27,00

6-27

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

75,00-200,00

75-200

Rolled billet square

75,00-200,00

75-200

Wire rod (Rod coil) hex

9,00-32,00

9-32

Wire rod (Rod coil) round

5,50-32,00

6-32

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

0.02


18.1

8.1



Arsopi MTS 2019-98-30

≤0.030

≤2.00

17.5-19.5

9.01-10.50


≤0.10

ASME II A SA-240

≤0.030

≤2.00

17.5-19.5

8.0-12.0


≤0.10

ASTM A240

≤0.030

≤2.00

17.5-19.5

8.0-12.0


≤0.10

ASTM A666

≤0.030

≤2.00

18.0-20.0

8.0-12.0


≤0.10

EN 10028-7

≤0.030

≤2.00

17.5-19.5

8.0-10.5


≤0.10

EN 10088-2

≤0.030

≤2.0

17.5-19.5

8.0-10.5


≤0.10

EN 10088-3

≤0.030

≤2.00

17.5-19.5

8.0-10.5


≤0.10

EN 10088-4

≤0.030

≤2.0

17.5-19.5

8.0-10.5


≤0.10

IS 6911

≤0.030

≤2.00

17.5-19.5

8.0-12.0

≤0.70

≤0.10

IS 6911

≤0.030

≤2.00

17.5-19.5

8.0-12.0

≤0.70

≤0.10


Mechanical Properties

It can be used at low temperatures down to -196 °C/384.8 °F even in welded structures. Moderate strengths can be reached at elevated temperatures (~550 °C/1022 °F).. Temperatures for excessive scaling are close to 850 °C/1562 °F.


StandardRp0.2Rp1.0RmElongationRockwellHB

MPa

MPa

MPa

%



Product type: Cold rolled coil and sheet

Typical (thickness 1 mm)

295

325

650

70



ASME II A SA-240

≥ 170


≥ 485



≤ 201

ASTM A240

≥ 170


≥ 485


≤ 92HRB

≤ 201

EN 10028-7

≥ 220

≥ 250

520-700

≥ 45



EN 10088-2

≥ 220

≥ 250

520-700

≥ 45



EN 10088-4

≥ 220

≥ 250

520-700

≥ 45



IS 6911

≥ 170


≥ 485


≤ 92HRB

≤ 201

IS 6911

≥ 170


≥ 485


≤ 92HRB

≤ 201

Product type: Hot rolled coil and sheet

Typical (thickness 4 mm)

290

345

620

50


175

ASME II A SA-240

≥ 170


≥ 485



≤ 201

ASTM A240

≥ 170


≥ 485



≤ 201

EN 10028-7

≥ 220

≥ 250

520-700

≥ 45



EN 10088-2

≥ 220

≥ 250

520-700

≥ 45



EN 10088-4

≥ 220

≥ 250

520-700

≥ 45



IS 6911

≥ 170


≥ 485


≤ 92HRB

≤ 201

IS 6911

≥ 170


≥ 485


≤ 92HRB

≤ 201

Product type: Hot rolled quarto plate

Typical (thickness 15 mm)

260

300

580

55



Arsopi MTS 2019-98-30

≥ 200

≥ 240

500-700

≥ 45



ASME II A SA-240

≥ 170


≥ 485


≤ 92HRB

≤ 201

ASTM A240

≥ 170


≥ 485


≤ 92HRB

≤ 201

EN 10028-7

≥ 200

≥ 240

500-700

≥ 45



EN 10088-2

≥ 200

≥ 240

500-700

≥ 45



EN 10088-4

≥ 200

≥ 240

500-700

≥ 45



IS 6911

≥ 170


≥ 485


≤ 92HRB

≤ 201

IS 6911

≥ 170


≥ 485


≤ 92HRB

≤ 201

Product type: Wire rod

Typical

280

320

580

55




Physical Properties

Density

Modulus of elasticity

Thermal exp. at 100 °CThermal conductivity

kg/dm3

GPa

10-6/°C

W/m°C

7.9

200

16.0

15


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