. It covers plates used in heavy machinery, mining equipment (e.g., excavators, loaders, bulldozers), and structural parts of cranes. Delivery Condition : Steel must be supplied in a quenched and tempered condition (often referred to as slack quenching). Steel Grades : Common grades include Q460, Q500, Q550, Q620, Q690, Q800, Q890, and Q960 Quality Designations
GB/T 16270 is a standard issued by the Standardization Administration of China (SAC). The "GB" stands for "Guo Biao," which translates to "national standard." The standard number often relates to specific products, testing methods, or safety requirements. Without the full context or the specific details of what GB/T 16270 pertains to, it's difficult to give a more detailed explanation.
: Ultrasonic testing (per GB/T 2970) may be required by contract for internal flaw detection. International Equivalents
: Includes common industry workhorses like Q460C/D/E and Q690E .
Chinese standards often allow slightly wider tolerances on thickness dimensions but have stricter rules for low-temperature impact testing.
| Parameter | Details | |-----------|---------| | | e.g., Q460E, Q500D, Q550D, Q620D, Q690D, Q890D, Q960D (Q = yield strength in MPa, D/E = impact temperature grade) | | Heat Treatment | Quenched + Tempered (Q&T) | | Yield Strength | 460–960 MPa minimum | | Tensile Strength | Typically 550–1100 MPa depending on grade | | Elongation | Minimum 14–18% (varies by grade) | | Impact Energy | 27 J or 40 J at -20°C, -40°C, or -60°C | | Cold Bending | Mandatory for formability verification |
. It covers plates used in heavy machinery, mining equipment (e.g., excavators, loaders, bulldozers), and structural parts of cranes. Delivery Condition : Steel must be supplied in a quenched and tempered condition (often referred to as slack quenching). Steel Grades : Common grades include Q460, Q500, Q550, Q620, Q690, Q800, Q890, and Q960 Quality Designations
GB/T 16270 is a standard issued by the Standardization Administration of China (SAC). The "GB" stands for "Guo Biao," which translates to "national standard." The standard number often relates to specific products, testing methods, or safety requirements. Without the full context or the specific details of what GB/T 16270 pertains to, it's difficult to give a more detailed explanation. gb t 16270 pdf
: Ultrasonic testing (per GB/T 2970) may be required by contract for internal flaw detection. International Equivalents Steel Grades : Common grades include Q460, Q500,
: Includes common industry workhorses like Q460C/D/E and Q690E . : Ultrasonic testing (per GB/T 2970) may be
Chinese standards often allow slightly wider tolerances on thickness dimensions but have stricter rules for low-temperature impact testing.
| Parameter | Details | |-----------|---------| | | e.g., Q460E, Q500D, Q550D, Q620D, Q690D, Q890D, Q960D (Q = yield strength in MPa, D/E = impact temperature grade) | | Heat Treatment | Quenched + Tempered (Q&T) | | Yield Strength | 460–960 MPa minimum | | Tensile Strength | Typically 550–1100 MPa depending on grade | | Elongation | Minimum 14–18% (varies by grade) | | Impact Energy | 27 J or 40 J at -20°C, -40°C, or -60°C | | Cold Bending | Mandatory for formability verification |