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S275JR steel plate
S275JR steel plate,S275JR grade steel is a readily weldable low carbon manganese steel with good impact resistance. This material is commonly supplied in the untreated or normalised condition. Machinability of this material is similar to that of mild steel.
Key words:
S275JR steel plate
Classification:
Description
EN 10025 S275 Steel (S275JR, S275J0 & S275J2)
EN 10025 S275 Steel is a non-alloy structural steel grade, according to EN10025, S275 mild steel is mainly devided into S275JR (1.0044), S275J0 (1.0143) and S275J2 (1.0145). Some properties of S275 mild steel is better than S235, and lower than S355.
S275 material old designation is St44 according to Germany standard, former quality grade equivalent is as follows:
EN10025 S275JR (1.0044) – St44-2 in DIN 17100
S275JO (1.0143) – St44-3U in DIN17100
S275J2 (1.0145) – S275J2G4 in EN 10025: 1993
EN10025 S275JR Meaning (Designation)
The lists below explains EN10025 S275JR meaning
“S” is for structural steel;
“275” refers to the minimum yield strength is 275 MPa tested with steel thickness ≤ 16mm.
“JR” means that the minimum charpy impact value at room temperature is 27J.
“J0” refers to the minimum charpy impact value at 0 °C is 27J.
“J2” means the minimum impact value at -20 °C is 27J.
S275 Data Sheet & Specification
EN 10025 S275 steel properties, composition and equivalent materials can be found in the following datasheet. All data sheet of DIN EN 10025-2 is the same as BS EN 10025-2 and other EU member states.
The S275JR PLATE is a steel plate made from mild steel or carbon steel. These plates are having huge usage for the structural building, manufacturing in the plant, machinery building, and in mining. These plates are made of S275JR alloy which is very versatile in nature.
Chemical composition & Mechanical property
Chemical Composition
Datasheet 1, EN10025 S275J0, S275J2 and S275JR chemical composition based on ladle analysis is given in the following table.
| Chemical Composition (ladle analysis), %, ≤ | ||||||||||
| Country (Region) | Standard | Steel Grade (Steel number) | C | Mn | P | S | N | Cu | Thickness (d) (mm) | Method of deoxidation |
| European Union | EN 10025-2 | S275JR (1.0044) | 0.21 | 1.50 | 0.035 | 0.035 | 0.012 | 0.55 | ≤ 40 | Rimmed steel not allowed |
| 0.22 | > 40 | |||||||||
| S275J0 (1.0143) | 0.18 | 1.50 | 0.030 | 0.030 | 0.012 | 0.55 | ≤ 150 | Rimmed steel not allowed | ||
| 0.20 | > 150 | |||||||||
| S275J2 (1.0145) | 0.18 | 1.50 | 0.025 | 0.025 | – | 0.55 | ≤ 150 | Fully Killed | ||
| 0.20 | > 150 | |||||||||
Datasheet 2, chemical composition based on product analysis.
| Chemical Composition (product analysis), %, ≤ | ||||||||||
| Country (Region) | Standard | Steel Grade (Steel number) | C | Mn | P | S | N | Cu | Thickness (d) (mm) | Method of deoxidation |
| European Union | EN10025-2 | S275JR (1.0044) | 0.24 | 1.60 | 0.045 | 0.045 | 0.014 | 0.60 | ≤ 40 | Rimmed steel not allowed |
| 0.25 | > 40 | |||||||||
| S275Jo (1.0143) | 0.21 | 1.60 | 0.040 | 0.040 | 0.014 | 0.60 | ≤ 150 | Rimmed steel not allowed | ||
| 0.22 | > 150 | |||||||||
| S275J2 (1.0145) | 0.21 | 1.60 | 0.035 | 0.035 | – | 0.60 | ≤ 150 | Fully Killed | ||
| 0.22 | > 150 | |||||||||
S275 Steel Properties
Physical Properties
S275 mild steel density: 7.85 g/cm3
Melting point: 1420-1460 °C (2590-2660 °F)
Mechanical Properties
S275 steel mechanical properties such as yield strength, tensile strength, elongation and impact resistance are given in datasheet below.
Yield Strength
Grade S275 Datasheet – 3
| S275 Yield Strength (≥ MPa); Dia. (d) mm | |||||||||
| Steel | 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 |
| S275 | S275JR (1.0044) | 275 | 265 | 255 | 245 | 235 | 225 | 215 | 205 |
| S275J0 (1.0143) | |||||||||
| S275J2 (1.0145) | |||||||||
Tensile Strength
EN 10025 S275 Datasheet – 4
| S275 Tensile Strength (≥ MPa) | |||||
| Steel | Steel Grade | d<3 | 3 ≤ d ≤ 100 | 100 < d ≤ 150 | 150 < d ≤ 250 |
| S275 | S275JR (1.0044) | 430-580 | 410-560 | 400-540 | 380-540 |
| S275J0 (1.0143) | |||||
| S275J2 (1.0145) | |||||
Note: 1MPa = 1N/mm2
Elongation
S275 material Datasheet – 5
| Elongation (≥%); Thickness (d) mm | |||||||||||
| Steel | Steel Grade | d≤1 | 1< d ≤1.5 | 1.5 < d ≤2 | 2 < d ≤ 2.5 | 2.5 < d ≤ 3 | 3 ≤d ≤40 | 40< d ≤63 | 63 < d ≤100 | 100 < d ≤ 150 | 150 < d ≤ 250 |
| S275 | S275JR | 15 | 16 | 17 | 18 | 19 | 23 | 22 | 21 | 19 | 18 |
| S275J0 (S275JO) | |||||||||||
| S275J2 | 13 | 14 | 15 | 16 | 17 | 21 | 20 | 19 | 19 | 18 | |
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