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S355 Grades S355JR, S355J2, S355J0 and S355K2 yield strength steel plate is a non-alloy European standard (EN 10025-2) structural steel, most commonly used after S235 where more strength is needed. S355JR, S355J2, S355J0 and S355K2 non-alloy steel plates have good weldability and machinability, let us see more mechanical details of this steel.
Identification of Different S355:
S - stands for structural steel
355 - stands for minimum yield strength (though it will vary based on thickness, refer below section for more details)
Normally S355 will have following variation based on impact strength at different temperatures, as steel become more brittle when temperature drops. If your structure need to withstand -20°C, it's better and safer to choose S355J2.
S355JR - Can withstand an impact energy of 27J at +20°C
S355J0 - Can withstand an impact energy of 27J at 0°C
S355J2 - Can withstand an impact energy of 27J at -20°C
S355K2 - Can withstand an impact energy of 27J at -30°C (40J at -20°C)
And sometime followed by a letter H, like S355J2H, here H stands for hollow section.
S355 Grades S355JR, S355J2, S355J0 and S355K2 Yield Strength:
S355 Grades S355JR, S355J2, S355J0 and S355K2 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
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 DensityDensity of S355 is 7850 kg/m3 like all other mild steel
S355 Hardness (Brinell Hardness-HB) 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 Equivalents
S355 EN 10025:1990 Equivalent
S355J2 → S355J2G4 (1.0577)
S355K2 → S355K2G4 (1.0596)
S355 DIN 17100 Equivalent: S355J0 → St 52-3 U; S355J2G3 → St 52-3 N
S355 ASTM Equivalent: S355 → A572 Grade 50 (Yield Strength 345 Mpa)
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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