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I-Q390D ipuleti lensimbi

I-GB/T1591 Q390 iqukethe amamaki ensimbi ayisihlanu ahlukene njenge-Q390A,Q390B,Q390C,Q390D kanye ne-Q390E.Structural steel Q390D izokwenziwa ukuhlolwa okunomthelela ekushiseni okuphansi kukhishwe ku-20 degree centigrade.Ukwelashwa kokushisa okujwayelekile kuphakanyiswe ukuthi kwenziwe ngepuleti lensimbi eyingxubevange ephansi. I-Q390D kugqinsi esindayo.
Ukwakheka Kwamakhemikhali
Ukwakheka kwezakhi zamakhemikhali eziyinhloko ze-Q390D
C Si UMn P S V Nb Thi Al (min.) Cr Ni
0.20 0.55 1.00-1.60 0.030 0.030 0.02-0.20 0.015-0.060 0.02-0.20 0.015 0.30 0.70
Impahla Mechanical
Ubukhulu (mm)
Q390D ≤ 16 > 16 ≤ 35 > 35 ≤ 50 >50
Amandla esivuno (≥Mpa) 390 370 350 330
Amandla okuqina (Mpa) 490-650
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