CS SEAMLESS ROUND PIPE S355 / CARBON STEEL ROUND SEAMLESS PIPE S355

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CS SEAMLESS ROUND PIPE S355 / CARBON STEEL ROUND SEAMLESS PIPE S355
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CS SEAMLESS ROUND PIPE S355 / CARBON STEEL ROUND SEAMLESS PIPE S355

S355 is a non-alloy European standard (EN 10025-2) structural steel, most commonly used after S235 where more strength is needed. It got great weld ability and machinability, let us see more mechanical details of this steel.

S355 Yield Strength

S355 is named based on it's minimum yield strength of 355 Mpa (N/mm2), However the yield strength reduces when you go up in thickness above 16 mm for flat products & hollow sections


SPECIFICATIONS

Here is the table showing reduction in yield strength based on thickness
Up to 16 mm - 355 Mpa
16 mm < t  ≤ 40 mm -  345 Mpa
40 mm < t  ≤ 63 mm -  335 Mpa
63 mm < t  ≤ 80 mm -  325 Mpa
80 mm < t  ≤ 100 mm -  315 Mpa
100 mm < t  ≤ 150 mm -  295 Mpa


S355 Tensile Strength

S355 ultimate tensile strength ranges also varies based on thickness.
Up to 3 mm - 510 Mpa to 680 Mpa
3 mm < t  ≤ 100 mm -  470 Mpa to 630 Mpa
100 mm < t  ≤ 150 mm -  450 Mpa to 600 Mpa


S355 Density

Density of S355 is 7850 kg/m3 like all other mild steel

S355 Hardness (Brinell Hardness - HB)

Hardness for S355 J2 ranges from 146 HB to 187 HB

S355 Young's Modulus

S355 Youngs's Modulus is 190 to 210 Gpa, in a conservative design go for 190 Gpa

 

S355 Chemical Composition

Designation

C %

Si %

Mn %

P%

S%

N%

Cu%

S355JR

0.24

0.55

1.6

0.035

0.035

0.012

0.55

S355J0

0.2

0.55

1.6

0.030

0.030

0.012

0.55

S355J2+N

0.22

0.55

1.6

0.035

0.035

-

-

S355J2 N

0.22

0.55

1.6

0.035

0.035

-

-

S355J2

0.2

0.55

1.6

0.025

0.025

-

0.55

    S355J2H

0.22

0.55

1.6

0.03

0.03

-

-

    S355J2+H

0.22

0.55

1.6

0.03

0.03

-

-

S355K2

0.2

0.55

1.6

0.025

0.025

-

0.55

 

Mechanical Properties

The datasheet below gives EN 10025 S355 steel mechanical properties such as yield strength, tensile strength and elongation.

Yield Strength

 

 

S355 Yield Strength

(≥N/MM2); DIA.(D)MM

 

 

 

 

 

 

 

 

STEEL

STEEL GRADE

D ≤ 16

16<D ≥63

40<D≥ 63

63<D≤80

80<D≤ 100

100< D≤150

150<D≤200

200<D ≤250

 

 

S355

 

S355JR

 

 

355

 

 

345

 

 

335

 

 

325

 

 

315

 

 

295

 

 

285

 

 

275

S355J0

S355J2

S355K2

 

 

Tensile Strength

 

S355 Tensile Strength (≥N/MM2)

 

 

 

STEEL

STEEL GRADE

D ≤ 16

3 ≤ D ≤ 100

100< D ≤250

 

 

S355

 

S355JR

 

510-680

 

 

470-630

 

450-600

S355J0

S355J2

S355KR

 

 

 

 

 

 

Elongation at Break

Elongation (%, ≥); Thickness (t) mm; L0 = 80 mm

 

 

 

 

 

 

Material

≤1

1< t ≤1.5

1.5< t ≤ 2

2<t ≤ 2.5

2.5< t < 3

Orientation of test pieces

 

S355

14

 

15

16

17

18

Parallel

12

13

14

15

16

Transverse

 

Elongation (%, ≥); Thickness (t) mm; L0 = 5.65 √So

 

 

 

 

 

 

Material

t ≤40

40< t ≤63

63 < t ≤100

100 < t ≤ 150

150 < t ≤ 400

Orientation of test pieces

 

S355

22

 

21

20

18

17

Parallel

20

19

18

18

17

Transverse

 

Note:

t = Thickness (mm)

1 MPa = 1 N/mm2