EN 1.4404, ASTM 316L / UNS S31603 Stainless Steel

EN 1.4404, ASTM 316L / UNS S31603 Stainless Steel

EN 1.4404, ASTM 316L / UNS S31603 Stainless Steel General Characteristics A low-carbon, molybdenum-alloyed alternative to Supra 316/4401 that is widely used for various applications with higher than average corrosion resistance requirements. Forta 316L/4404 is strengthened with temper rolling...
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EN 1.4404, ASTM 316L / UNS S31603 Stainless Steel

General Characteristics

A low-carbon, molybdenum-alloyed alternative to Supra 316/4401 that is widely used for various applications with higher than average corrosion resistance requirements. Forta 316L/4404 is strengthened with temper rolling for applications that require specific strength as well as improved weldability and intergranular corrosion resistance.


Typical Applications

  • Chemical tanks and tubing

  • Pulp and paper process equipment


Chemical Composition (% by mass)


C

Mn

CrNiMoN

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

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 are given in the table below.

StandardRp0.2Rp1.0RmRockwellHB

MPa

MPa

MPa



Product type: Cold rolled coil and sheet

Typical (thickness 1 mm)

300

325

625



ASME II A SA-240

≥ 170


≥ 485


≤ 217

ASTM A240

≥ 170


≥ 485

≤ 95HRB

≤ 217

EN 10028-7

≥ 240

≥ 270

530-680



EN 10088-2

≥ 240

≥ 270

530-680



EN 10088-4

≥ 240

≥ 270

530-680



IS 6911

≥ 170


≥ 485

≤ 95HRB

≤ 217

TECHNETICS M118 Rev A (Z2 CND

≥ 240

≥ 270

530-680



Product type: Hot rolled coil and sheet

Typical (thickness 4 mm)

300

350

600


170

ASME II A SA-240

≥ 170


≥ 485


≤ 217

ASTM A240

≥ 170


≥ 485


≤ 217

EN 10028-7

≥ 240

≥ 270

530-680



EN 10088-2

≥ 240

≥ 270

530-680



EN 10088-4

≥ 240

≥ 270

530-680



IS 6911

≥ 170


≥ 485

≤ 95HRB

≤ 217

TECHNETICS M118 Rev A (Z2 CND

≥ 240

≥ 270

530-680



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


Physical Properties

Physical properties according to EN 10088 are shown below.

DensityModulus of elasticityThermal exp. at 100 °CThermal conductivity

kg/dm3

GPa

10-6/°C

W/m°C

8.0

200

16,0

15


Corrosion Resistance

Pitting corrosion resistanceCrevice corrosion resistance

PRE

CPT

CCT

24

20±2

<0

PRE Pitting Resistant Equivalent calculated using the formula: PRE = %Cr + 3.3 x %Mo + 16 x %NCPT 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


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