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EN 10225 S355G8 Steel – Normalized or Normalized-Formed (+N) Grade

This steel is thermomechanically rolled (M) or normalised (N).

Our products are studied to improve workability and weldability.

Properties

General

PropertyValueComment

Carbon equivalent (CEV)

0.43 [-]

Product

Weld cracking parameter

0.24 [-]

Product

Carbon equivalent note

CEV = C + Mn/6 + (Cr+Mo+V)/5 + (Cu+Ni)/15 and PCM = C + Si/30 + (Cr+Mn+Cu)/20 + Ni/60 + Mo/15 + V/10 + 5B

Mechanical

PropertyTemperatureValueComment

Charpy impact energy

-40 °C

50 J

min. | for thickness 5-80 mm | Transverse

Elongation

22 %

min. A5.65√So | for thickness 5-80 mm | Transverse

Tensile strength

470 - 630 MPa

for thickness 5-80 mm | Transverse

Yield strength

325 MPa

min. | for thickness 63-80 mm | Transverse

335 MPa

min. | for thickness 40-63 mm | Transverse

345 MPa

min. | for thickness 25-40 mm | Transverse

355 MPa

min. | for thickness 5-25 mm | Transverse

Yield to strength ratio

0.85 [-]

max | for thickness 16-25 mm | Transverse

0.87 [-]

max | for thickness 5-16 mm | Transverse

Chemical properties

PropertyValueComment

Aluminium

0.015 - 0.055 %

for thickness 5-80 mm

Carbon

0.14 %

max. | for thickness 5-80 mm

Chromium

0.25 %

max. | for thickness 5-80 mm

Copper

0.3 %

max. | for thickness 5-80 mm

Manganese

1 - 1.65 %

for thickness 5-80 mm

Molybdenum

0.08 %

max. | for thickness 5-80 mm

Nickel

0.5 %

max. | for thickness 5-80 mm

Niobium

0.04 %

max. | for thickness 5-80 mm

Nitrogen

0.01 %

max. | for thickness 5-80 mm

Phosphorus

0.02 %

max. | for thickness 5-80 mm

Silicon

0.15 - 0.55 %

for thickness 5-80 mm

Sulfur

0.007 %

max. | for thickness 5-80 mm

Titanium

0.025 %

max. | for thickness 5-80 mm

Vanadium

0.06 %

max. | for thickness 5-80 mm

Technological properties

Property
Application areas

Offshore structures such as platforms and equipment for new offshore windmill towers.

Chemical composition

  • A ratio Al/N ≥ 2 shall be applied
  • The sum of the percentages by mass of the four elements chromium, nickel, copper and molybdenum shall not exceed 0.90%.
  • The sum of the percentages by mass of the two elements niobium and vanadium shall not exceed 0.06% and the sum of the percentages by mass of the three elements niobium, titanium and vanadium shall not exceed 0.08%.

    The above chemical properties are based on cast analysis data. Product analysis may be requested at the time of order.

  • Delivery condtion

    For the dimensions available please visit Dimension tables (see Table A). Table A with a thickness range as indicated in the Mechanical properties.

    Other

    Available options

    Options available (after previous agreement):

  • Ultrasonic testing
  • Reduced carbon equivalent (CEV) or parameter crack measurement (PCM) value
  • Transversal impact test
  • Improved deformation properties perpendicular to the surface of the product as per EN 10164 (Z test)
  • Post-weld heat treatment test (PWHT)
  • Other options specified in the standard


  • Metal

    1. EN 10225 S355G7 Steel – Normalized or Normalized Formed (N) for Superior Workability and Weldability
    2. EN 10225 S355G8 Thermomechanically Rolled Steel (+M) – High Strength & Excellent Weldability
    3. DIN 2394-2: Grade St 28 Steel – Normalized & Normalized Formed (+N) Properties
    4. EN 10273 Grade P460NH – High-Temperature Normalized Steel for Pressure Vessel Applications
    5. EN 10225 S355G14 Steel – Normalized or Normalized Formed (+N) for Offshore Structures
    6. EN 10225 Grade S355G15 – Normalized or Normalized‑Formed Steel for Offshore Applications
    7. EN 10225 Grade S355G13 – Normalized/Normalized Formed (+N) for Offshore Structures
    8. EN 10216-2 Grade St 45.8: High‑Temperature Normalized Tube Steel (+N) for Seamless Tubes
    9. EN 10217-2 Grade St 37.8: High‑Temperature Normalized Tube Steel for Industrial Use
    10. EN 10217‑2 Grade St 42.8 Tube Steel – High‑Temperature Normalized Formed for Vessels & Petrochemical Use