Table of Contents
EN 10025 S355 Steel Grade
S355 steel is a European standard structural steel, according to EN 10025-2, material S355 is mainly divided into 4 quality grades:
- S355JR (1.0045)
- S355J0 (1.0553)
- S355J2 (1.0577)
- S355K2 (1.0596)
The structural steel S355 is better than steel S235 and S275 in yield strength, tensile strength and other properties.
Material S355 Meaning (Designation)
The following letters and numbers explains the steel grade S355 meaning.
- “S” is short for “structural steel”
- “355” refers to the minumum yield strength value for the flat and long steel thickness ≤ 16mm.
- “JR” means the impact energy value is minumum 27 J at room temperature (20°C).
- “J0” can withstand the impact energy at least 27 J at 0°C.
- “J2” related to the minumum impact energy value is 27 J at -20°C.
- “K2” refers to the minumum impact energy value is 40 J at -20°C.
Properties and Specification
The tables below show the material grade S355 steel properties and specification including chemical composition, yield strength, tensile strength and elongation, etc. All datasheet of DIN EN 10025-2 is the same as BS EN 10025-2 and other EU member states.
Chemical Composition
The datasheet below shows material S355 chemical composition comparison.
S355 Chemical Composition (%, ≤) | ||||||||||
Standard | Steel | Grade | C | Si | Mn | P | S | Cu | N | Method of deoxidation |
EN 10025-2 | S355 | S355JR | 0.24 | 0.55 | 1.60 | 0.035 | 0.035 | 0.55 | 0.012 | Rimmed steel is not allowed |
S355J0 (S355JO) | 0.20 | 0.55 | 1.60 | 0.030 | 0.030 | 0.55 | 0.012 | |||
S355J2 | 0.20 | 0.55 | 1.60 | 0.025 | 0.025 | 0.55 | – | Fully killed | ||
S355K2 | 0.20 | 0.55 | 1.60 | 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 (MPa, ≥); Dia. (d) in mm | |||||||||
Steel | Grade (Steel Number) | d≤16 | 16< d ≤40 | 40< d ≤63 | 63< d ≤80 | 80< d ≤100 | 100< d ≤150 | 150< d ≤200 | 200< d ≤250 |
S355 | S355JR (1.0045) | 355 | 345 | 335 | 325 | 315 | 295 | 285 | 275 |
S355J0 (1.0553) | |||||||||
S355J2 (1.0577) | |||||||||
S355K2 (1.0596) |
Tensile Strength
S355 Tensile Strength (MPa, ≥) | ||||
Steel | Grade | d<3 | 3 ≤ d ≤ 100 | 100 < d ≤ 250 |
S355 | S355JR | 510-680 | 470-630 | 450-600 |
S355J0 (S355JO) | ||||
S355J2 | ||||
S355K2 |
Elongation at Break
Elongation (%, ≥); Thickness (d) in mm | ||||||
Steel | Quality Grade | 3≤d≤40 | 40< d ≤63 | 63< d ≤100 | 100< d ≤ 150 | 150< d ≤ 250 |
S355 | S355JR | 22 | 21 | 20 | 18 | 17 |
S355J0 (S355JO) | ||||||
S355J2 | ||||||
S355K2 | 20 | 19 | 18 | 18 | 17 |
S355 Steel Equivalent Grades
EN 10025-2 S355 steel equivalent grades are listed in the table below, including US ASTM AISI SAE, Germany DIN, ISO, Japanese JIS, Chinese GB, and Indian standard. (For reference)
S355 steel equivalent grades | |||||||||||||
European Union | US | Germany | China | Japan | Indian | ISO | |||||||
Standard | Grade | Standard | Grade | Standard | Grade | Standard | Grade | Standard | Grade | Standard | Grade | Standard | Grade |
EN 10025-2 | S355JR (1.0045) | ASTM A572/A572M | Grade 50 | GB/T 1591 | Q355, Q355B; Q345B (Q345) | JIS G3135 | SPFC590 | IS 2062 | E350 | ISO 630-2 | S355B | ||
S355J0 (1.0553) | DIN 17100: 1980 | St52-3U | GB/T 1591 | Q355C; Q345C | ISO 630-2 | S355C | |||||||
S355J2 (1.0577); S355J2G4 |
St52 | GB/T 1591 | Q355D; Q345D | ISO 630-2 | S355D | ||||||||
S355K2 (1.0596); S355K2G4 |
GB/T 1591 | Q345E; Q355D |
Can you tell me the difference between S355 and E355 grade.
Sir,
Q355B grade angle steel plate is equivalent for S355G3+N steel plate and can be used for wall module restoration of fixed oil platform.
Can you tell me S355J2+N is equivalent to S355G7?
hi have different grade plate for S355KT-40 with S355K2 ?
Dear Export,
what is the difference between S355G1, G2 G3 & G11