Gb T 16270 Pdf

: The text was heavily updated by indexing technical baselines from global frameworks, specifically EN 10025-6 (European) and ISO 4950.3 (International Organization for Standardization). 2. Steel Grade Naming and Classification

Because of its superior strength-to-weight ratio and durability, steel produced under GB/T 16270 is widely used in: Cranes, excavators, and bulldozers.

| GB/T 16270 | International Equivalent | Notes | | :--- | :--- | :--- | | | S460Q (EN 10025-6), A514 Grade B (ASTM) | Very close match. | | Q550 | S550Q (EN 10025-6) | Direct mechanical equivalence. | | Q690 | S690Q (EN 10025-6), ASTM A514 Grade Q | The most common interchangeable grade. | | Q960 | S960Q (EN 10025-6) | Niche applications; careful of CEV differences. |

Kept relatively low to maintain good weldability.

is a Chinese national standard titled "High strength structural steel plates and strips for mechanical and general engineering purposes – Quenched and tempered." gb t 16270 pdf

: Developed by referring to international standards including EN 10025-6:2004 ISO 4950.3-2003 Technical Contents : Defines designations (e.g., Q460, Q690, Q890, Q960

Maintained at acceptable percentages (typically 12% to 16% depending on the grade) to allow for necessary structural deformation before failure.

Properties must meet the minimum values in the transverse direction.

While summaries and third-party tables are available online, having an authentic is essential for several reasons: : The text was heavily updated by indexing

High strength structural steel plates in quenched and tempered condition Maximum 100 mm Maximum 150 mm Product Forms Steel plates and steel strips Steel plates only (strips canceled) Key Grades Removed Ultra-High Grades Added Q800, Q890, Q960 Quality Grades Basic variants Added premium C and F designations Flexural Testing Material Grades and Nomenclature

This standard specifies the requirements for dimension, shape, mass, tolerance, technical requirements, testing methods, and packaging for high-strength steel plates that have undergone quenching and tempering (Q&T). It is a vital technical reference for producing and inspecting high-performance structural components. GB/T 16270-2009 Replaced Version: GB/T 16270-1996 Effective Date: 2009-12-01 Applicable Thickness: Up to 150 mm 2. Key Technical Requirements of GB/T 16270

Heavy-duty dump truck beds, power shovels, and rock crushers.

The standard (which replaced the older GB/T 16270-1996) defines the technical requirements for high-strength structural steel plates delivered in a quenched and tempered (Q+T) condition. Key features include: | GB/T 16270 | International Equivalent | Notes

The standard covers several essential areas for ensuring the quality and performance of structural steel:

If you have specific questions about the or material performance of Q550 vs Q690 within this standard, let me know! High Strength Steel Plates Standard | PDF - Scribd

Each steel grade is further divided into quality sub-grades (such as C, D, E, or F) based on their impact testing temperatures: : Charpy V-notch impact testing performed at 0°C. Grade D : Impact testing performed at -20°C. Grade E : Impact testing performed at -40°C.