S355K2 po'lat plitasi Evropa standartidagi past qotishma yuqori quvvatli po'lat plitalar, Evropa standartidagi qotishma po'lat plitalarda ifodalangan "S" da S355K2 sinfi; 355 MPa minimal qiymati uchun po'lat plitaning rentabellik qiymati uchun 355; Minus 20 ta'sir ishining K2 ifodasi 40J dan kam emas (40J talablarining K ifodasi, minus 20 darajali ta'sirning 2 ifodasi). S355K2 - Evropa standartidagi issiq haddelenmiş konstruktiv po'latdan yasalgan buyumlar, S355J0, S355K2 va boshqalar kabi boshqa materiallarning bir xil seriyasi. EN10025 standartining S355K2 amalga oshirilishi, po'lat plitalar issiq haddelenmiş, boshqariladigan galstuk, normallashtirilgan yoki normallashtirilgan holatda etkazib beriladi. dumaladi.
S355K2 po'lat plitalar kimyoviy tarkibi.
C: {0}} dan kichik yoki teng.24; Si: 0,60 dan kam yoki unga teng;
Mn: 1,7 dan kichik yoki unga teng0; P: 0,035 dan kam yoki unga teng;
S: {0}} dan kichik yoki teng.035; Cu: 0,60 dan kam yoki unga teng;
S355K2 po'lat plitasining mexanik xususiyatlari.
Chidamlilik kuchi (Mpa): 16 mm dan kam yoki unga teng: 355 dan katta yoki teng;
16-40: 345 dan katta yoki teng;
40-63: 335 dan katta yoki teng;
63-80: 325 dan katta yoki teng;
80-100: 315 dan katta yoki teng;
100-150: 295;
150-200: 285 dan katta yoki teng;
200-250: 275 dan katta yoki teng;
250-400: 265 dan katta yoki unga teng.
Kuchlanish kuchi (Mpa): 450-600.
Ta'sir ishi: -20 daraja : 40J dan katta yoki unga teng (plastinka qalinligi 150 mm dan past).
Impact specimens:Specimens shall be processed and prepared in accordance with EN 10045-1. Furthermore, the following requirements shall apply:a) When the nominal thickness is >12 mm, namuna standart 10 mm X 10 mm gacha ishlov berilishi kerak, namunaning bir tomoni prokat yuzalaridan biridan 2 mm dan oshmasligi kerak, agar EN 10025-2 dan EN 10025-6 b gacha boshqacha qoida nazarda tutilmagan bo'lsa) nominal qalinligi<12mm, and a reduced width specimen is used, the minimum width shall be 5mm.
