Formulated by referring to international standards like EN 10025-6 and ISO 4950.3 . 2. Technical Content of the PDF
Example: A plate marked represents a quenched and tempered steel plate with a 690 MPa minimum yield strength, tested for toughness at -40°C. Technical and Chemical Requirements
The core value of downloading the GB/T 16270 PDF is accessing the exact engineering matrices. The document outlines: Yield Strength ( ReHcap R sub e cap H
Understanding the GB/T 16270 Standard for High-Strength Steel Plates
While these standards are similar, engineers must always cross-reference the exact chemical limits and impact testing temperatures in the PDF to verify that a substitute material meets specific application tolerances. Common Applications of GB/T 16270 Steel Plates gb t 16270 pdf
If you are sourcing this material for a project, let me know: Which (e.g., Q690D, Q460E) you need? The required plate thickness for your design? Whether you need to find a direct Western equivalent ?
The current active version. Major changes from the 1996 edition include: Scope Change: Applicable thickness extended from 100mm to ; steel strips were removed from the scope. New Grades: Added ultra-high-strength grades Q800, Q890, and Q960 Quality Grades: Added quality grades
Example: denotes a steel with a minimum yield strength of 690 MPa, tested for impact resistance at -20°C.
, which often indicate impact test temperatures (e.g., Grade E plates like are tested at Delivery State : Products must be delivered in a quenched and tempered (Q+T) state to ensure high yield strength and toughness. Common Applications Formulated by referring to international standards like EN
Due to its high strength and weldability, GB/T 16270 steel is used in heavy-duty welded structures, including: Mining Machinery : Excavators, dump trucks, and hydraulic supports. Construction Equipment : Mobile cranes, drilling machines, and bulldozers. Infrastructure
: Valid (Implemented on 1 April 2010; superseded GB/T 16270-1996).
A defining characteristic of GB/T 16270 is the requirement for the plates to be delivered in a . This two-stage heat treatment process involves:
(Invoking related search suggestions.)
: Phosphorus and Sulfur are kept strictly low (often under 0.020% or 0.015% for premium grades) to maximize internal cleanliness and prevent tearing. Mechanical Property Requirements For a standard plate thickness (typically ≤50is less than or equal to 50 mm), the steel must hit these benchmark metrics: Steel Grade Min. Yield Strength (MPa) Tensile Strength (MPa) Min. Elongation (%) Q460 550 – 720 Q550 670 – 830 Q690 770 – 940 Q890 940 – 1180 Q960 980 – 1150 Typical Industrial Applications
: It specifies inspection rules, including ultrasonic testing (referenced in GB/T 2970) and Charpy V-Notch impact tests.
Compliance Audits: Ensuring that supplied materials meet the specific tolerances and testing protocols required by contract.
| Standard | Purpose | |----------|---------| | | Hot-rolled plate dimensions & tolerances | | GB/T 2975 | Mechanical test sampling location | | GB/T 1591 (for comparison) | Low-alloy high-strength (non-Q&T) | | GB/T 229 | Charpy impact test method | | GB/T 228.1 | Tensile test method | Technical and Chemical Requirements The core value of
To achieve high strength without sacrificing weldability, GB/T 16270 steels utilize a low-alloy composition optimized with micro-alloying elements. The chemistry typically features controlled amounts of: