As to S275JR VS S355JR, actually they are totally not same thing.
S275JR is carbon steel, while S355JR is low alloy steel.
Both carbon steel S275JR and S355JR low alloy steel are under EN10025-2 standard.
The S355JR low alloy steel is higher steel grade than carbon steel S275JR.
Carbon steel S275JR VS S355JR low alloy steel in chemical composition
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S355JR | 1.0145: Chemical composition
| Percentage by weight % max. | ||||||
| C | Si | Mn | P | S | N | Cu |
| 0.24 | 0,55 | 1.60 | 0.035 | 0.035 | 0.012 | 0.55 |
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Chemical composition of ladle sample of steel S275JR in accordance with EN 10025-2, %
|
C for nominal thickness in mm |
Mn |
P |
S |
N |
Cu |
||
|
≤ 16 |
˃16 ≤ 40 |
˃ 40 |
|||||
|
≤ 0.21 |
≤ 0.21 |
≤ 0.22 |
≤ 1.50 |
≤ 0.035 |
≤ 0.035 |
≤ 0.012 |
≤ 0.55 |
Carbon steel S275JR VS S355JR low alloy steel in mechanical properties
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S355JR | 1.0145: Mechanical properties
| Upper yield strength ReH MPa min. | Tensile strength Rm MPa | Elongation at fracture A80 % min. | Elongation at fracture A 5 % min. |
|||||
| e ≤ 16 mm | e < 3 mm | 3 mm ≤ e ≤ 16 mm | e ≤ 1 mm | 1 mm < e ≤ 1.5 mm |
1.5 mm < e ≤ 2 mm | 2 mm < e ≤ 2.5 mm |
2.5 mm < e < 3 mm | 3 mm ≤ e ≤ 16 mm |
| 355 | 510–680 | 470–630 | 12 | 13 | 14 | 15 | 16 | 20 |
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Mechanical properties of steel S275JR
|
Nominal thickness, mm |
Minimum yield strength, MPa |
Strength limit, MPa |
|
<3 |
275 |
430-580 |
|
≥3 ≤ 16 |
275 |
410-560 |
|
> 16 ≤ 40 |
265 |
410-560 |
|
> 40 ≤ 63 |
255 |
410-560 |
|
> 63 ≤ 80 |
245 |
410-560 |
|
> 80 ≤ 100 |
235 |
410-560 |
|
> 100 ≤ 150 |
225 |
400-540 |
|
> 150 ≤ 200 |
215 |
380-540 |
|
> 200 ≤ 250 |
205 |
380-540 |
|
> 250 ≤ 400 |
195 |
380-540 |
Application
Structural unalloyed steel S355JR has a wide range of applications in construction, metallurgy, heavy and transport engineering, machine tool, power engineering and bridge building industries. Various profiles and metal structures, parts and elements of ground and underground equipment are made from steel S355JR.
Steel grade S275JR is used in the form of long and flat products to manufacture welded and riveted steel structures, and can also be used in the machine building industry for low-load parts, including bushings, shafts and axles.
Welding
Steel S335JR has good weldability using various welding methods, both without heating and with pre-heating, and followed by high-temperature processing .
Steel grade S275JR can be welded without restrictions, welding occurs without preheating and without subsequent heat treatment.
GNEE steel has been engaged in steel materials for more than 18 years. For any information about carbon steel S275JR and S355JR low alloy steel, such as carbon steel S275JR chemical composition, S355JR low alloy steel mechanical property, carbon steel S275JR specification, S355JR low alloy steel data sheet, carbon steel S275JR and S355JR low alloy steel price, please feel free to consult BBN steel.
GNEE Steel also supplies a variety of high-strength steel plates, such as A514 Grade F, A572 Grade 50, A588 Grade A, S355JR, S690Q, SS400, S690QL, Q345B, Q345E, etc. If you want to know more about other types of steel plates, you can call the consultation hotline at +8615824687445 or send an email to info@gneesteels.com. You are welcome to consult us, and we are very willing to answer your questions.
FAQ
What is S355JR equivalent to?
S355JR equivalent grades have very close chemical composition and mechanical properties to that of S355JR steel. Both the S355JR equivalent grades Q345B, A572 Gr 50, ST52-3, SM490B and S355JR steel are main products of BBN steel.
What is structural steel grade S355JR?
S355JR steel has a high strength-to-weight ratio, making it suitable for use in load-bearing structures such as bridges, buildings, and offshore structures. It has a minimum yield strength of 355 N/mm², making it one of the strongest steel grades available.
What is the difference between S355JR and J2?
In S355JR and S355J2 steel, JR and J2 indicates the steel needs to do +20℃ impact test and -20℃ impact test respectively. The different impact temperature is the main difference between S355JR and S355J2 steel. S355J2 steel can better adapt to low temperature work condition than S355JR steel.
What does JR mean in steel?
The J means that the test was conducted with 27 joules of energy. This is followed by either an R for room temperature, or a number referring to the temperature the tests were conducted at. So JR is room temperature (plus 20 degrees) J0 is 0 degrees and J2 is -20 degrees.
Is S355 better than S275?
This grade of steel is stronger than its S275 counterpart with a minimum yield strength of 355 N/mm2 resulting in its S355 name. This grade is also available in plate, round bar, flat bar, and is even available in blocks.
What is the hardness of S355 jr?
Grade S355JR has a minimum yield strength of 355 MPa. The impact energy at a room temperature of 20°C is at least 27 joules.
What is S355 steel used for?
This structural steel is used in shipbuilding and railway vehicle construction. S355 steel also finds optimal application for the construction of machinery such as cranes and excavators, as well as in building and piping construction, ventilation systems and pumps.
What is the price of S355JR per kg?
Mild Steel, Grade: S355JR – 0.61 USD/kg | 610 USD/ton
What is the difference between S275JR and S355JR?
S275JR is carbon steel, while S355JR is low alloy steel. Both carbon steel S275JR and S355JR low alloy steel are under EN10025-2 standard. The S355JR low alloy steel is higher steel grade than carbon steel S275JR.
| Other steel plate | ||||
| Name | Material | Specification (mm) | Tons | Remark |
| Clad steel plate | P265GH+410,S355JR+410,A516Gr70+316, A537CL1+304L,Q235B+304L,Q345B+304, A516Gr70(NACE)+410,A537CL1+904L, A537CL1+316L,A516Gr70+304L,A537CL1+304 ,A516Gr70+410,A516Gr70+904L |
2-300mm(Based plate),1-50mm(Composited plate) | / | UT, AR, TMCP.Normalized, Quenched and Tempered,Z Direction Test, Charpy V-Notch impact TestThe Third Party Test , Coated or Shot Blasting and Painting. |
| Low Alloy | Q345A, Q345B, Q345C, Q345D, Q345E, Q390, Q420, Q460C, ST52-3, S355J2+N, SS400, SA302GrC, S275NL, 35CrMo | 6 - 350 | 5788.56 | Normalizing, tempered ,controlled rolling, hot rolling , Hot rolling,1st inspection, 2nd inspection, 3rd inspection |
| Pressure Vessel Plate | Q245R, Q345R, Q370R, 16MnDR, 09MnNiDR, 15CrMoR, 14Cr1MoR, 12Cr2Mo1R, SA516Gr60, SA516Gr70, SA516Gr485, SA285, SA387Gr11, SA387Gr12, SA387Gr22, P265,P295,P355GH,Q245R(R-HIC),Q345R(R-HIC) | 3 - 300 | 8650 | Normalizing, tempered ,controlled rolling, hot rolling , Hot rolling,1st inspection, 2nd inspection, 3rd inspection |
| High-Strength Plate | WH785D/E,Q960D/E, Q890D/E,WH60D/E,WH70B,Q550D,Q590D,Q690D/E | 8 - 120 | 3086.352 | Quenched and tempered |
| Wear-Resistant Plate | NM360, NM400, NM450, NM500 | 6 - 150 | 3866.297 | Quenched and tempered |
| Bridge Plate | Q235qC, Q345qC, Q370qC, Q420qC, Q345qDNH, Q370qDNH, A709 - 50F - 2, A709 - 50T - 2 | 8 - 200 | 2853.621 | Hot rolling, normalized ,hot rolling controlled rolling, quenched and tempered + toughness and brittleness |
