Gb T 16270 Pdf

Scope: Covers steel plates with thicknesses typically up to 150mm.

Mechanical Properties: The standard mandates specific yield strengths, tensile strengths, and elongation percentages for each grade.

: Valid (Implemented on 1 April 2010; superseded GB/T 16270-1996).

: Crane booms, concrete pump trucks, and heavy-duty excavators.

: High strength structural steel plates in the quenched and tempered condition. gb t 16270 pdf

| Grade | C (max) | Si (max) | Mn | P (max) | S (max) | Cr (max) | Ni (max) | Mo (max) | B (max) | V (max) | Nb (max) | Ti (max) | | :--- | :--- | :--- | :--- | :--- | :--- | :--- | :--- | :--- | :--- | :--- | :--- | :--- | | Q460C | 0.20 | 0.80 | 1.00–1.60 | 0.025 | 0.015 | 1.50 | 2.00 | 0.70 | 0.005 | 0.12 | 0.06 | 0.05 | | Q460D | 0.20 | 0.80 | 1.00–1.60 | 0.025 | 0.015 | 1.50 | 2.00 | 0.70 | 0.005 | 0.12 | 0.06 | 0.05 | | Q460E | 0.20 | 0.80 | 1.00–1.60 | 0.020 | 0.010 | 1.50 | 2.00 | 0.70 | 0.005 | 0.12 | 0.06 | 0.05 | | Q690C | 0.20 | 0.80 | 1.00–1.80 | 0.025 | 0.015 | 1.50 | 2.00 | 0.70 | 0.005 | 0.12 | 0.06 | 0.05 | | Q690D | 0.20 | 0.80 | 1.00–1.80 | 0.025 | 0.015 | 1.50 | 2.00 | 0.70 | 0.005 | 0.12 | 0.06 | 0.05 | | Q690E | 0.20 | 0.80 | 1.00–1.80 | 0.020 | 0.010 | 1.50 | 2.00 | 0.70 | 0.005 | 0.12 | 0.06 | 0.05 | Source: Adapted from industry data .

| Steel Grade | Thickness (mm) | Yield Strength (min, MPa) | Tensile Strength (MPa) | Elongation (min, %) | Impact Toughness (J) | | :--- | :--- | :--- | :--- | :--- | :--- | | Q460C | ≤50 | 460 | 550–720 | 17 | 40 (0°C) | | Q460C | 50–100 | 440 | 500–670 | 17 | 40 (0°C) | | Q460D | ≤50 | 460 | 550–720 | 17 | 40 (-20°C) | | Q460E | ≤50 | 460 | 550–720 | 17 | 40 (-40°C) | | Q690C | ≤50 | 690 | 770–940 | 14 | 40 (0°C) | | Q690D | ≤50 | 690 | 770–940 | 14 | 40 (-20°C) | | Q690E | ≤50 | 690 | 770–940 | 14 | 40 (-40°C) | Source: Adapted from industry data .

The standard applies to steel plates with a nominal thickness ranging from , primarily used for welded structures in construction, mining machinery, cranes, and bridges.

If you have more details about GB/T 16270 (like the sector it relates to), I could offer more targeted advice. Scope: Covers steel plates with thicknesses typically up

The standard categorizes steel using designations based on their minimum yield strength. Common grades often include designations such as , Q890 , or Q960 , where the "Q" stands for the Chinese pinyin for yield point ( Qufu dian ), and the number represents the minimum yield strength in megapascals (MPa).

Chassis for heavy-duty trucks and railway cars. Infrastructure: High-load bridges and building frameworks. Mining Equipment: Roof supports and heavy conveyor systems. 🧪 Chemical Composition Requirements

The chemical composition must adhere to strict limits to ensure weldability and hardenability. The "Carbon Equivalent" (CEV) is a primary control metric to assess weldability.

Accessing the official PDF of a Chinese national standard can be done through several legitimate channels. Due to copyright regulations, the availability of the full PDF varies depending on whether the standard is based on an international standard (采标) or is an original Chinese standard. : Crane booms, concrete pump trucks, and heavy-duty

Due to its high strength-to-weight ratio and fatigue resistance, steel complying with GB/T 16270 is widely used in : Detail of GB/T 16270-2009 - Code of China

Provides access to the technical specification. ANSI Webstore : Stocks the Chinese version of the standard.

: Specifically covers high-strength structural steel plates delivered in quenched and tempered (Q+T) conditions. Thickness Limits : Applicable to plates with a thickness not exceeding (extended from 100mm in the previous version). Reference Standards

: The industry benchmark for mining and heavy lifting applications.