EN 10025 Steel S275 (S275JR, S275J0 and S275J2)
EN 10025 S275 steel is a kind of non-alloy structural steel, according to EN10025, S275 mild steel is mainly divided into S275JR (1.0044), S275J0 (1.0143) and S275J2 (1.0145). Some properties of S275 carbon steel are better than S235 and inferior to S355.
The old designation of S275 material is St44 according to the German standard, the old equivalent quality grade 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 explain the meaning of EN10025 S275JR
- “S” is for structural steel;
- “275” refers to the minimum yield strength of 275 MPa tested with steel thickness ≤ 16 mm.
- “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 that the minimum impact value at -20 °C is 27J.
S275 Datasheet and Specifications
The properties, composition and equivalent materials of EN 10025 S275 steel can be found in the following technical sheet. All data sheets for DIN EN 10025-2 are the same as those for BS EN 10025-2 and other EU member states.
Chemical composition
The chemical composition of data sheet 1, EN10025 S275J0, S275J2 and S275JR based on pan analysis is given in the following table.
| Chemical Composition (pan analysis), %, ≤ | ||||||||||
| Country (Region) | Standard | Steel grade (steel number) | W | Mn | P | s | N | Ass | Thickness (d) (mm) | Deoxidation method |
| European Union | EN 10025-2 | S275JR (1.0044) | 0.21 | 1.50 | 0.035 | 0.035 | 0.012 | 0.55 | ≤ 40 | Steel with rim not permitted |
| 0.22 | > 40 | |||||||||
| S275J0 (1.0143) | 0.18 | 1.50 | 0.030 | 0.030 | 0.012 | 0.55 | ≤ 150 | Steel with rim not permitted | ||
| 0.20 | > 150 | |||||||||
| S275J2 (1.0145) | 0.18 | 1.50 | 0.025 | 0.025 | – | 0.55 | ≤ 150 | Totally dead | ||
| 0.20 | > 150 | |||||||||
Technical sheet 2, chemical composition based on product analysis.
| Chemical Composition (product analysis), %, ≤ | ||||||||||
| Country (Region) | Standard | Steel grade (steel number) | W | Mn | P | s | N | Ass | Thickness (d) (mm) | Deoxidation method |
| European Union | EN10025-2 | S275JR (1.0044) | 0.24 | 1.60 | 0.045 | 0.045 | 0.014 | 0.60 | ≤ 40 | Steel with rim not permitted |
| 0.25 | > 40 | |||||||||
| S275Jo (1.0143) | 0.21 | 1.60 | 0.040 | 0.040 | 0.014 | 0.60 | ≤ 150 | Steel with rim not permitted | ||
| 0.22 | > 150 | |||||||||
| S275J2 (1.0145) | 0.21 | 1.60 | 0.035 | 0.035 | – | 0.60 | ≤ 150 | Totally dead | ||
| 0.22 | > 150 | |||||||||
Properties of S275 steel
Physical properties
- Density of S275 mild steel: 7.85 g/cm3
- Melting Point: 1420-1460°C (2590-2660°F)
Mechanical properties
The mechanical properties of S275 steel such as yield strength, tensile strength, elongation and impact resistance are given in the data sheet below.
Yield strength
S275 Series Datasheet – 3
| Yield strength S275 (≥ MPa); Dia. (d) millimeters | |||||||||
| 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
Datasheet EN 10025 S275 – 4
| Tensile strength S275 (≥ 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
Stretching
Material Data Sheet S275 – 5
| Stretching (≥%); Thickness (d) mm | |||||||||||
| Steel | Steel Grade | d≤1 | 1 |
1.5 |
2 < d ≤ 2.5 | 2.5 < d ≤ 3 | 3 ≤d ≤40 | 40< d ≤63 | 63 |
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 | |
Equivalent material of S275 steel
EN 10025 S275 steel equivalent to American ASTM AISI SAE, European EN standard (British BSI standard, French NF standard…), ISO standard, Japanese JIS standard, Chinese GB standard and Indian IS standard. (For reference)
| Equivalent material in S275 steel | |||||||||||||
| European Union | USA | Germany | China | Japan | ISO | India | |||||||
| Standard | Note | Standard | Note | Standard | Note | Standard | Note | Standard | Note | Standard | Note | Standard | Note |
| EN 10025-2 | S275JR (1.0044) | ASTM A1011/A1011M | Class SS 40 [275] | DIN 17100 | St44-2 | GB/T 700 | Q275, Q275B | JIS G3101 | SS490 | ISO 630-2 | S275B | ||
| S275J0 (1.0143) | St44-3U | Q275C | ISO 630-2 | S275C | |||||||||
| S275J2 (1.0145) | Q275D | ISO 630-2 | S275D | ||||||||||
EN10025-2 (BS EN 10025-2, DIN EN 10025-2)
