EN 1.4404, ASTM TYPE 316L / UNS S31603 Stainless Steel

EN 1.4404, ASTM TYPE 316L / UNS S31603 Stainless Steel

EN 1.4404, ASTM TYPE 316L / UNS S31603 Stainless Steel General Characteristics 316L/4404 is our most widely used molybdenum-alloyed austenitic stainless steel. 316L/4404 is a low-carbon stainless steel and is used in various process industries and other aggressive environments with higher than...
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EN 1.4404, ASTM TYPE 316L / UNS S31603 Stainless Steel

General Characteristics

316L/4404 is our most widely used molybdenum-alloyed austenitic stainless steel. 316L/4404 is a low-carbon stainless steel and is used in various process industries and other aggressive environments with higher than average corrosion resistance requirements. Due to its low carbon content, this product is also weldable in thicknesses of more than 5–6 mm/ 0.19–0.23 in without sensitivity to intergranular corrosion.


316L/4404 is an austenitic stainless steel that belongs to the standard CrNiMo stainless steels. Grade 316L/4404 has low carbon content for improved resistance against intergranular corrosion after welding.


Due to their molybdenum content, the austenitic CrNiMo standard grades can be used in applications with increased demand for corrosion resistance. Their well-balanced material properties make them suitable for the fabrication of many products.


316L/4404 is commonly available from many stainless steel stockists in many product forms and dimensions. It can be supplied with a wide range of functional and aesthetic surface finishes.


Typical Applications

Equipment in the chemical and petrochemical industry

Pulp and paper industry equipment

Textile industry equipment

Food and beverage industry equipment

Pharmaceutical industry equipment

Medical applications

Flanges and valves


Product forms, available sizes and finishes

Flat

Product typeFinishesThicknessWidth

Black hot band

1U

2,50-12,70

800-1800

Cold rolled coil

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

0,05-6,35

3-2070

Cold rolled sheet

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

0,20-8,00

18-2070

Hot rolled coil, pickled

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

2,40-12,70

50-2070

Precision strip

2H, 2R

0,05-1,50

3-649

Quarto plate

1D, 1G

5,00-130,00

400-3200


Long

Product typeFinishesThicknessWidth

Cast billet


127,00-180,00

127-180

Cast slab


170,00-300,00

1000-1585

Cold drawn bar hex


8,00-32,00

8-32

Cold drawn bar round


6,00-32,00

6-32

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


5,00-381,00

5-381

Peeled / turned bar round


70,00-170,00

70-170

Rebar coil

LP PI

6,00-25,00

6-25

Rolled billet round


75,00-200,00

75-200

Rolled billet square


75,00-200,00

75-200

Wire rod (Rod coil) hex


9,00-27,00

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

0.02


17.2

10.1

2.1


ASME II A SA-240

≤0.030

≤2.00

16.0-18.0

10.0-14.0

2.00-3.00

≤0.10

ASTM A240

≤0.030

≤2.00

16.0-18.0

10.0-14.0

2.00-3.00

≤0.10

ASTM A666

≤0.030

≤2.00

16.0-18.0

10.0-14.0

2.00-3.00

≤0.10

EN 10028-7

≤0.030

≤2.00

16.5-18.5

10.0-13.0

2.00-2.50

≤0.10

EN 10088-2

≤0.030

≤2.0

16.5-18.5

10.0-13.0

2.0-2.5

≤0.10

EN 10088-3

≤0.030

≤2.00

16.5-18.5

10.0-13.0

2.0-2.5

≤0.10

EN 10088-4

≤0.030

≤2.0

16.5-18.5

10.0-13.0

2.0-2.5

≤0.10

IS 6911

≤0.030

≤2.00

16.0-18.0

10.0-14.0

2.00-3.00

≤0.10

TECHNETICS M118 Rev A (Z2 CND

≤0.030

≤2.0

16-19

10.0-14.0

2.0-2.5

≤0.11


Mechanical Properties

The mechanical properties of the available products in the soft annealed condition at room temperature are given in the table below. 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)

300

325

625

70



ASME II A SA-240

≥ 170


≥ 485



≤ 217

ASTM A240

≥ 170


≥ 485


≤ 95HRB

≤ 217

EN 10028-7

≥ 240

≥ 270

530-680

≥ 40



EN 10088-2

≥ 240

≥ 270

530-680

≥ 40



EN 10088-4

≥ 240

≥ 270

530-680

≥ 40



IS 6911

≥ 170


≥ 485


≤ 95HRB

≤ 217

TECHNETICS M118 Rev A (Z2 CND

≥ 240

≥ 270

530-680

≥ 40



Product type: Hot rolled coil and sheet

Typical (thickness 4 mm)

300

350

600

55


170

ASME II A SA-240

≥ 170


≥ 485



≤ 217

ASTM A240

≥ 170


≥ 485



≤ 217

EN 10028-7

≥ 240

≥ 270

530-680

≥ 40



EN 10088-2

≥ 240

≥ 270

530-680

≥ 40



EN 10088-4

≥ 240

≥ 270

530-680

≥ 40



IS 6911

≥ 170


≥ 485


≤ 95HRB

≤ 217

TECHNETICS M118 Rev A (Z2 CND

≥ 240

≥ 270

530-680

≥ 40



Product type: Hot rolled quarto plate

Typical (thickness 15 mm)

260

300

570

55



ASME II A SA-240

≥ 170


≥ 485


≤ 95HRB

≤ 217

ASTM A240

≥ 170


≥ 485


≤ 95HRB

≤ 217

EN 10028-7

≥ 220

≥ 260

520-670

≥ 45



EN 10088-2

≥ 220

≥ 260

520-670

≥ 45



EN 10088-4

≥ 220

≥ 260

520-670

≥ 45



IS 6911

≥ 170


≥ 485


≤ 95HRB

≤ 217

TECHNETICS M118 Rev A (Z2 CND

≥ 220

≥ 260

520-670

≥ 45



Product type: Wire rod

Typical

220

260

530

55




Physical Properties (According to EN 10088)

Density

Modulus of elasticity

Thermal exp. at 100 °C

Thermal conductivity

kg/dm3

GPa

10-6/°C

W/m°C

8.0

200

16,0

15


Standards & Approvals

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

StandardDesignation
ASME SA-240M Code Sect. II. Part A

TYPE 316L / UNS S31603

ASTM A240/A240M

TYPE 316L / UNS S31603

ASTM A666

TYPE 316L / UNS S31603

EN 10028-7, PED 2014/68/EU

1.4404

EN 10088-2

1.4404

EN 10088-3

1.4404

EN 10088-4

1.4404

IS 6911, AMENDMENT NO. 2

ISS 316 L

TECHNETICS M118 Rev A (Z2 CND 17-12 acc RCCM M3307) + JN 14-2016

1.4404


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