Gb T 16270 Pdf Jun 2026

An authentic, fully compliant copy of this standard can be reviewed by obtaining a verified GB/T 16270-2009 English PDF from verified digital repositories like the Chinese Standard Service. 1. Scope and Technical Evolution

American standard for high-yield-strength, quenched and tempered alloy steel plate. 2. Precise Manufacturing Tolerances gb t 16270 pdf

| 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 . An authentic, fully compliant copy of this standard

: The 2009 revision extended the applicable thickness for steel plates from 100mm to 150mm Steel Grades : Common grades include Q460, Q500, Q550, Q690, Q800, Q890, and Q960 quenched and tempered alloy steel plate.