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The difference between S355G9+M and S355G9+N steel plate is that the delivery status is different. S355G9+M and S355G9+N European standard high-strength structural steel are welded structural steel for fixing offshore structures. "S" indicates structural steel, "355" indicates the minimum yield strength of steel plate, G9 indicates the relevant number of steel grade characteristics, M is hot rolled or TMCP, N is normalized, normalized rolled.
S355G9+M, S355G9+N steel plate executive standard: EN 10225-2009
Analysis of chemical composition of S355G9+M steel plate (finished products):
| Grade | C | Si | Mn | P | S | Ni | Cr | Mo |
| S355G9+M | ≤0.12 | 0.15-0.55 | ≤1.65 | ≤0.02 | ≤0.010 | ≤0.7 | ≤0.2 | ≤0.08 |
| Cu | Nb | V | Ti | Alt | N | B | Ca | Pb |
| ≤0.3 | ≤0.03 | ≤0.06 | ≤0.025 | 0.015-0.055 | ≤0.010 | ≤0.0005 | ≤0.005 | ≤0.010 |
Chemical composition of S355G9+N steel plate (melting analysis):
| Grade | C | Si | Mn | P | S | Ni | Cr | Mo | Cu |
| S355G9+N | ≤0.12 | 0.15-0.55 | ≤1.65 | ≤0.02 | ≤0.010 | ≤0.7 | ≤0.2 | ≤0.08 | ≤0.3 |
| Nb | V | Ti | Alt | N | B | Ca | Pb | Ceq Max | Pcm Max |
| ≤0.03 | ≤0.06 | ≤0.025 | 0.015-0.055 | ≤0.010 | ≤0.0005 | ≤0.005 | ≤0.010 | ≤0.43 | ≤0.22 |
Composition Notes: As, Sn, Pb, Bi, Ca, B are residual elements; Nb+V≤0.06; Nb+V+Ti≤0.08; Alt/N≥2; As≤0.03; Sn≤0.02; Bi≤0.01; Thickness>75mm, when the delivery condition is thermomechanical rolling, Mo≤0.2; Thickness>40mm, Ni≥0.3. Ceq = C+Mn/6+(Cr+Mo+V)/5+(Ni+Cu)/15 Pcm=C+Si/30+(Mn+Cu+Cr)/20+Ni/60+Mo/15 +V/10+5B
GB T 5312 Carbon and carbon-manganese steel seamless steel tubes and pipes are mainly for ship use, also known as shipbuilding steel pipes. Under GB T 5312, there are mainly 5 steel grades: grade 320, 360, 410, 460 and 490. Each grade covers three levels: I, II, III.
Angle steel, commonly known as angle iron, is a long strip of steel whose sides are perpendicular to each other. There are equal angle steels and unequal angle steels. The two sides of equal angle steel are equal in width. The unequal angle steel is also known as L shape profile steel.
Flat bar steel can be produced according to the user's needs, with fixed thickness, width and length. It can reduce the cutting process for users, reduce the consumption of labor and materials, and also reduce the processing loss of raw materials.
Bulb flat steel for shipbuilding
The bulb flat steel is a kind of medium section material which is mainly used in the field of shipbuilding and bridge building, and the shipbuilding bulb flat steel is an auxiliary medium section material for shipbuilding.
The steel for shipbuilding and oil platform---FH40, is the high tensile strength steel.The shipbuilding steel FH40 is the Hull structural steel.We can provide FH40 shipbuilding steel plate price.
The steel for shipbuilding and oil platform---EH40, is the high tensile strength steel.The shipbuilding steel EH40 is the Hull structural steel.We can provide EH40 shipbuilding steel plate price.
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