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EN 10025-3 S420N low alloy steel

S420N Steel Introduction:
S420N belongs to hot rolled products of structural steels, delivered in normalized or normalized rolled conditions. S420N is weldable fine grain structural steel.

Chemical Composition:

Main chemical elements composition of S420N

C

Si

Mn

P

S

Nb

V

0.20

0.60

1.00-1.70

0.030

0.025

0.05

0.20

Al(total)

Ti

Cr

Ni

Mo

Cu

N

≥0.02

0.05

0.30

0.80

0.10

0.55

0.025

Mechanical Property:

Thickness (mm)

S420N

≤ 16

> 16 ≤ 40

> 40 ≤ 63

> 63 ≤ 80

> 80 ≤ 100

> 100 ≤ 150

> 150 ≤ 200

> 200

Yield strength (≥Mpa)

420

400

390

370

360

340

330

320

≤ 100

> 100 ≤ 200

> 200

Tensile strength (Mpa)

520-680

500-650

500-650

S420N Steel Application:
S420N is weldable fine grain structural steel, generally used in heavily loaded parts of welded structures such as, bridges, flood gates, storage tanks, water supply tanks, etc., for service at ambient and low temperatures.

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