Q355NH thiab Q355B yog ob tug siv dav hauv Suav- tsim qauv steels hauv Q355 tsev neeg. engineers, procurement managers, thiab production planners feem ntau ntsib cov kev xaiv ntawm lawv thaum qhia cov phaj thiab seem cov ntaub ntawv rau txuas hniav, siab- tuav cov qauv, hnyav machinery thav duab, thiab welded fabrications. Cov kev txiav txim siab ib txwm muaj xws li lub zog vs. kev lag luam toughness-offs, weldability thiab fabrication txwv, thiab lifecycle tiv thaiv tiv thaiv atmospheric corrosion piv rau tus nqi qis tshaj thawj zaug.
| Element | Q355B (ib txwm tswj) | Q355NH (kev tswj hwm) |
|---|---|---|
| C (carbon) | Tswj ntawm qib qis-nruab nrab rau lub zog thiab weldability | Cov pa roj carbon zoo sib xws; tej zaum yuav raug teev rau nruj txwv rau toughness |
| Mn (zeeg) | Tam sim no ua lub zog tseem ceeb / deoxidation keeb | Tam sim no; feem ntau siv zoo sib xws rau lub zog thiab hardenability tswj |
| Si (silicon) | Kev tswj me me raws li deoxidizer | Me me tswj tus nqi |
| P (phosphorus) | Tsawg impurity (kuj qis) | Tsawg impurity; tej zaum yuav muaj stricter max |
| S (sulfur) | Tsawg impurity (kuj qis) | Tsawg impurity; feem ntau zoo sib xws los yog nruj dua |
| Cr (Chromium) | Feem ntau tsawg heev los yog kab | Feem ntau tsawg heev los yog kab (tsis yog qib stainless hlau) |
| N (nickel) | Feem ntau trace/absent | Feem ntau trace/absent |
| Mo, V, Nb, Ti (microalloying) | Tej zaum yuav muaj me me hauv qee txoj kev tsim khoom | Tej zaum yuav suav nrog microalloying (Nb, V, Ti) thaum txhim kho toughness thiab grain refinement raug teev tseg |
| Cu (kwv yees) | Feem ntau kab; tsis yog tus tsim feature | Tej zaum yuav txhob txwm tshwm sim me me hauv qee qhov huab cua- cov qauv ua siab ntev ua los ntawm qee lub tshuab (tsim daim ntawv pov thawj) |
| N (nitrogen), B (boron) | Txoj kab; tswj | Txoj kab; tswj |
GNEE steel tuaj yeem muab cov hlau tsis tshua muaj hlau Q355NH thiab Q355B steel phaj nrog kev pabcuam ntxiv. Txais tos xa peb cov lus nug yog tias koj xav tau Q355NH thiab Q355B phaj nqe.
Cim npe nrov: Q355B VS Q345NH Cov Qauv Hlau - Tag Nrho Kev Sib Piv, Tuam Tshoj Q355B VS Q345NH Cov Qauv Hlau - Tag Nrho Cov Khoom Sib Piv manufacturers, lwm tus neeg, Hoobkas
