What is the difference between S355JR steel and S355MC steel?

Oct 20, 2025 Leave a message

S355JR steel and S355MC steel are two different structural steel materials. They have the following differences:

 

Material usage:

 

S355JR steel is mainly used in general structural engineering and manufacturing fields, such as bridges, buildings and mechanical equipment.

S355MC steel is a high-strength cold-formed hot-rolled steel that is widely used in the automotive industry and the manufacture of cold-formed components.

 

Strength level:

 

S355JR steel usually has a minimum yield strength of 355MPa, and its tensile strength is 470-630MPa when the thickness is less than 16 mm.

In comparison, S355MC steel has a higher yield strength, usually 355-510MPa, and a tensile strength of 430-550MPa.

 

Composition and processing:

 

The chemical composition of these two steels is slightly different. S355JR steel contains elements such as carbon, silicon, manganese, sulfur and phosphorus, while S355MC steel also contains trace alloying elements such as niobium, vanadium and titanium.

In addition, S355JR steel is usually supplied in hot-rolled or heat-treated form, while S355MC steel is supplied in hot-rolled form and has good cold forming properties.

 

Conditions of use:

 

Since S355MC steel has high strength and good cold forming properties, it is suitable for manufacturing parts that require high strength and complex shapes.

S355JR steel is more suitable for general structural engineering and mechanical equipment.

 

 

Applications:

 

S355JR: Primarily used in structural applications like bridges, buildings, and other heavy construction.

S355MC: More suited for applications that require higher strength and formability, such as in the automotive industry for chassis and other structural parts.

 

Heat Treatment:

 

S355JR: Typically not heat-treated beyond normalizing.

S355MC: May undergo specific processes like quenching and tempering to achieve desired mechanical properties.

 

Reach out to us

If you want to learn more about GNEE's products, you can send an email to alloy@gneesteelgroup.com. We are more than happy to assist you.

 

 

What is S355MC steel?

EN 10149-2 S355MC is a high-strength low-alloy steel coil that is commonly used in the automotive industry for manufacturing structural parts and components.

 

What is the material equivalent of S355MC?

S355MC has equivalents in other standards, including German DIN QStE360TM, Japanese JIS SPFH540, and the VDA equivalent HR340LA. Various suppliers also offer dual-certified products, such as SSAB's Domex 355MC, which meets the S355MC standard.

 

What is the difference between s355j2 and S355MC?

S355MC and S355J2 are both structural steel grades, but they differ in their production standards and intended applications. S355MC is a thermomechanically rolled steel under the EN 10149-2 standard, specifically designed for cold forming and the automotive industry, while S355J2 follows the EN 10025-2 standard and is known for its excellent impact toughness, with impact tests conducted at low temperatures (typically -20°C).

 

What is the yield strength of S355MC material?

355 MPa

Thanks to its fine-grained microstructure and high degree of purity, grade S355MC is well suited for cold bending, folding and cold flanging without cracking. The name of grade S355MC refers to its upper yield strength. This is 355 MPa.

 

S355MC steel

S355MC steel

S355MC steel

 

Grades Of Carbon and Low-alloy High-strength Steels Supplied By GNEE
ASTM/ASME ASTM A36/A36M ASTM A36      
ASTM A283/A283M ASTM A283 Grade A ASTM A283 Grade B ASTM A283 Grade C ASTM A283 Grade D
ASTM A514/A514M ASTM A514 Grade A ASTM A514 Grade B ASTM A514 Grade C ASTM A514 Grade E
ASTM A514 Grade F ASTM A514 Grade H ASTM A514 Grade J ASTM A514 Grade K
ASTM A514 Grade M ASTM A514 Grade P ASTM A514 Grade Q ASTM A514 Grade R
ASTM A514 Grade S ASTM A514 Grade T    
ASTM A572/A572M ASTM A572 Grade 42 ASTM A572 Grade 50 ASTM A572 Grade 55 ASTM A572 Grade 60
ASTM A572 Grade 65      
ASTM A573/A573M ASTM A573 Grade 58 ASTM A573 Grade 65 ASTM A573 Grade 70  
ASTM A588/A588M ASTM A588 Grade A ASTM A588 Grade B ASTM A588 Grade C ASTM A588 Grade K
ASTM A633/A633M ASTM A633 Grade A ASTM A633 Grade C ASTM A633 Grade D ASTM A633 Grade E
ASTM A656/A656M ASTM A656 Grade 50 ASTM A656 Grade 60 ASTM A656 Grade 70 ASTM A656 Grade 80
ASTM A709/A709M ASTM A709 Grade 36 ASTM A709 Grade 50 ASTM A709 Grade 50S ASTM A709 Grade 50W
ASTM A709 Grade HPS 50W ASTM A709 Grade HPS 70W ASTM A709 Grade 100 ASTM A709 Grade 100W
ASTM A709 Grade HPS 100W      
ASME SA36/SA36M ASME SA36      
ASME SA283/SA283M ASME SA283 Grade A ASME SA283 Grade B ASME SA283 Grade C ASME SA283 Grade D
ASME SA514/SA514M ASME SA514 Grade A ASME SA514 Grade B ASME SA514 Grade C ASME SA514 Grade E
ASME SA514 Grade F ASME SA514 Grade H ASME SA514 Grade J ASME SA514 Grade K
ASME SA514 Grade M ASME SA514 Grade P ASME SA514 Grade Q ASME SA514 Grade R
ASME SA514 Grade S ASME SA514 Grade T    
ASME SA572/SA572M ASME SA572 Grade 42 ASME SA572 Grade 50 ASME SA572 Grade 55 ASME SA572 Grade 60
ASME SA572 Grade 65      
ASME SA573/SA573M ASME SA573 Grade 58 ASME SA573 Grade 65 ASME SA573 Grade 70  
ASME SA588/SA588M ASME SA588 Grade A ASME SA588 Grade B ASME SA588 Grade C ASME SA588 Grade K
ASME SA633/SA633M ASME SA633 Grade A ASME SA633 Grade C ASME SA633 Grade D ASME SA633 Grade E
ASME SA656/SA656M ASME SA656 Grade 50 ASME SA656 Grade 60 ASME SA656 Grade 70 ASME SA656 Grade 80
ASME SA709/SA709M ASME SA709 Grade 36 ASME SA709 Grade 50 ASME SA709 Grade 50S ASME SA709 Grade 50W
ASME SA709 Grade HPS 50W ASME SA709 Grade HPS 70W ASME SA709 Grade 100 ASME SA709 Grade 100W
ASME SA709 Grade HPS 100W      
EN10025 EN10025-2 EN10025-2 S235J0 EN10025-2 S275J0 EN10025-2 S355J0 EN10025-2 S355K2
EN10025-2 S235JR EN10025-2 S275JR EN10025-2 S355JR EN10025-2 S420J0
EN10025-2 S235J2 EN10025-2 S275J2 EN10025-2 S355J2  
EN10025-3 EN10025-3 S275N EN10025-3 S355N EN10025-3 S420N EN10025-3 S460N
EN10025-3 S275NL EN10025-3 S355NL EN10025-3 S420NL EN10025-3 S460NL
EN10025-4 EN10025-4 S275M EN10025-4 S355M EN10025-4 S420M EN10025-4 S460M
EN10025-4 S275ML EN10025-4 S355ML EN10025-4 S420ML EN10025-4 S460ML
EN10025-6 EN10025-6 S460Q EN10025-6 S460QL EN10025-6 S460QL1 EN10025-6 S500Q
EN10025-6 S500QL EN10025-6 S500QL1 EN10025-6 S550Q EN10025-6 S550QL
EN10025-6 S550QL1 EN10025-6 S620Q EN10025-6 S620QL EN10025-6 S620QL1
EN10025-6 S690Q EN10025-6 S690QL EN10025-6 S690Q1 EN10025-6 S890Q
EN10025-6 S890QL EN10025-6 S890QL1 EN10025-6 S960Q EN10025-6 S960QL
JIS JIS G3101 JIS G3101 SS330 JIS G3101 SS400 JIS G3101 SS490 JIS G3101 SS540
JIS G3106 JIS G3106 SM400A JIS G3106 SM400B JIS G3106 SM400C JIS G3106 SM490A
JIS G3106 SM490YA JIS G3106 SM490B JIS G3106 SM490YB JIS G3106 SM490C
JIS G3106 SM520B JIS G3106 SM520C JIS G3106 SM570  
DIN DIN 17100 DIN17100 St52-3 DIN17100 St37-2 DIN17100 St37-3 DIN17100 RSt37-2
DIN17100 USt37-2      
DIN 17102 DIN17102 StE315 DIN17102 EStE315 DIN17102 TStE315 DIN17102 WStE315
DIN17102 StE355 DIN17102 EStE355 DIN17102 TStE355 DIN17102 WStE355
DIN17102 StE380 DIN17102 EStE380 DIN17102 TStE380 DIN17102 WStE380
DIN17102 StE420 DIN17102 EStE420 DIN17102 TStE420 DIN17102 WStE420
DIN17102 StE460 DIN17102 EStE460 DIN17102 TStE460 DIN17102 WStE460
DIN17102 StE500 DIN17102 EStE500 DIN17102 TStE500 DIN17102 WStE500
DIN17102 EStE285      
GB GB/T700 GB/T700 Q235A GB/T700 Q235B GB/T700 Q235C GB/T700 Q235D
GB/T700 Q275      
GB/T1591 GB/T1591 Q345A GB/T1591 Q390A GB/T1591 Q420A GB/T1591 Q420E
GB/T1591 Q345B GB/T1591 Q390B GB/T1591 Q420B GB/T1591 Q460C
GB/T1591 Q345C GB/T1591 Q390C GB/T1591 Q420C GB/T1591 Q460D
GB/T1591 Q345D GB/T1591 Q390D GB/T1591 Q420D GB/T1591 Q460E
GB/T1591 Q345E GB/T1591 Q390E    
GB/T16270 GB/T16270 Q550C GB/T16270 Q550D GB/T16270 Q550E GB/T16270 Q550F
GB/T16270 Q620C GB/T16270 Q620D GB/T16270 Q620E GB/T16270 Q620F
GB/T16270 Q690C GB/T16270 Q690D GB/T16270 Q690E GB/T16270 Q690F
GB/T16270 Q800C GB/T16270 Q800D GB/T16270 Q800E GB/T16270 Q800F
GB/T16270 Q890C GB/T16270 Q890D GB/T16270 Q890E GB/T16270 Q890F
GB/T16270 Q960C GB/T16270 Q960D GB/T16270 Q960E GB/T16270 Q960F
GB/T16270 Q500