Informasi umum
Baja EN 10025 S355 minangka kelas baja struktural standar Eropa, miturut EN 10025-2: 2004, materi S355 dipérang dadi 4 kelas kualitas utama:
● S355JR (1.0045)
● S355J0 (1.0553)
● S355J2 (1.0577)
● S355K2 (1.0596)
Sifat baja struktural S355 luwih apik tinimbang baja S235 lan S275 ing kekuatan ngasilake lan kekuatan tarik.
Steel Grade S355 Meaning (Designation)
Huruf lan angka ing ngisor iki nerangake arti kelas baja S355.
"S" iku singkatan saka "baja struktural".
"355" nuduhake nilai kekuatan ngasilake minimal kanggo kekandelan baja sing rata lan dawa ≤ 16mm.
"JR" tegese nilai energi impact minimal 27 J ing suhu kamar (20 ℃).
"J0" bisa nahan energi impact paling sethithik 27 J ing 0 ℃.
"J2" sing gegandhengan karo nilai energi impact minimal yaiku 27 J ing -20 ℃.
"K2" nuduhake nilai energi impact minimal yaiku 40 J ing -20 ℃.
Komposisi kimia lan sifat mekanik
Komposisi kimia
S355 Komposisi Kimia % (≤) | ||||||||||
Standar | baja | sasmita | C | Si | Mn | P | S | Cu | N | Metode deoksidasi |
EN 10025-2 | S355 | S355JR | 0.24 | 0.55 | 1.60 | 0.035 | 0.035 | 0.55 | 0.012 | Baja rimmed ora diijini |
S355J0 (S355JO) | 0.20 | 0.55 | 1.60 | 0.030 | 0.030 | 0.55 | 0.012 | |||
S355J2 | 0.20 | 0.55 | 1.60 | 0,025 | 0,025 | 0.55 | – | Dipejahi kanthi lengkap | ||
S355K2 | 0.20 | 0.55 | 1.60 | 0,025 | 0,025 | 0.55 | – | Dipejahi kanthi lengkap |
Sifat Mekanik
Kekuwatan Ngasilake
S355 Kekuwatan Ngasilake (≥ N/mm2); Dia. (d) mm | |||||||||
baja | Kelas Baja (Nomor Baja) | d≤16 | 16< d ≤40 | 40< d ≤63 | 63< d ≤80 | 80< d ≤100 | 100< d ≤150 | 150< d ≤200 | 200< d ≤250 |
S355 | S355JR (1.0045) | 355 | 345 | 335 | 325 | 315 | 295 | 285 | 275 |
S355J0 (1.0553) | |||||||||
S355J2 (1.0577) | |||||||||
S355K2 (1.0596) |
Kekuwatan Tensile
S355 Kekuwatan Tarik (≥ N/mm2) | ||||
baja | Kelas Baja | d<3 | 3 ≤ d ≤ 100 | 100 < d ≤ 250 |
S355 | S355JR | 510-680 | 470-630 | 450-600 |
S355J0 (S355JO) | ||||
S355J2 | ||||
S355K2 |
Elongation
Elongation (≥%); Ketebalan (d) mm | ||||||
baja | Kelas Baja | 3≤d≤40 | 40< d ≤63 | 63< d ≤100 | 100< d ≤ 150 | 150< d ≤ 250 |
S355 | S355JR | 22 | 21 | 20 | 18 | 17 |
S355J0 (S355JO) | ||||||
S355J2 | ||||||
S355K2 | 20 | 19 | 18 | 18 | 17 |