The difference between S275J2, S275JR, and S275J0 steel is that the impact temperature is different and the chemical composition is different. S represents structural steel; 275 represents the yield strength value: 275MPa; J2 refers to the impact energy test temperature -20 degrees Celsius; JR refers to the impact energy test temperature of 20 degrees Celsius; J0 refers to the impact energy test temperature of 0 degrees Celsius.
S275J2 steel chemical elements (finished products):
| C | Mn | P | S | Cu | Ceq Max |
| ≤0.18 | ≤1.5 | ≤0.025 | ≤0.02 | ≤0.55 | ≤0.42 |
S275JR steel chemical composition, melting analysis:
| C | Mn | P | S | N | Ceq Max |
| ≤0.22 | ≤1.5 | ≤0.03 | ≤0.03 | ≤0.012 | ≤0.42 |
S275J0 steel chemical composition:
| C | Mn | P | S | Cu | N | Ceq Max |
| ≤0.18 | ≤1.5 | ≤0.03 | ≤0.025 | ≤0.55 | ≤0.012 | ≤0.42 |
Composition Note: When Alt≥0.02% or other sufficient nitrogen-fixing elements are used, the maximum value of N does not apply. Ceq = C+Mn/6+(Cr+Mo+V)/5+(Ni+Cu)/15
Mechanical properties of S275J2 steel:
Yield strength ReH (MPa): ≥255
Tensile strength Rm (MPa): 410-560
Elongation A(%): ≥20
Shock temperature: -20℃
Impact energy Akv(J): ≥27
Mechanical properties of S275JR steel:
Yield strength ReH(MPa)≥255
Tensile strength Rm (MPa) 410-580
Elongation A(%): ≥19
Shock temperature 20℃
Impact energy Akv(J): ≥27
S275J0 steel mechanical properties:
Yield strength ReH(MPa)≥255
Tensile strength Rm (MPa): 410-560
Elongation A(%): ≥20
Shock temperature 0℃
Impact energy Akv(J): ≥27
S275J2, S275JR, S275J0 steel are carbon structural steels used for welding, bolting, riveting structure.
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