T/JSGT 010-2021 Active Group standards

T/JSGT 010-2021 High-strength hot-rolled ribbed steel bar

Publish Date: 2022-07-26 Implement Date: 2022-07-27 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: T/JSGT 010-2021

Standard Type: Group standards

Standard Status: Active

is_force_gb: no

CCS Name: -

ICS Name: \nSteel rods and steel bars

Publish Date: 2022-07-26

Implement Date: 2022-07-27

Scope

Main Technical Content: 7.1 Technical Requirements 7.1.1 Steel Grade and Chemical Composition 7.1.1.1 The steel grade and chemical composition, including carbon equivalent (melt analysis), shall comply with the provisions of Table 5. Table 5: Steel Grade, Chemical Composition, and Carbon Equivalent (Melt Analysis) Grade Chemical Composition (Mass Fraction) /% Carbon Equivalent Ceq /% CSiMnPSHRB-T6, HRB-T6E, HRB-T63/E/G, HRB-T63E/E/G ≤ 0.28 ≤ 0.80 ≤ 1.60 ≤ 0.035 ≤ 0.035 ≤ 0.58 7.1.2 The carbon equivalent Ceq (percentage) value can be calculated using Formula (1): (1) 7.1.3 The nitrogen content in the steel shall not exceed 0.012%. If the supplier can guarantee it, no analysis is required. If there are sufficient nitrogen-bonding elements in the steel, the nitrogen content limit can be relaxed appropriately. 7.1.4 The allowable deviations of the finished chemical composition of reinforcing steel shall comply with the provisions of GB/T 222, and the allowable deviation of carbon equivalent Ceq shall be +0.03%. 7.2 Smelting Methods The steel shall be smelted in converter or electric furnaces, and external refining may be used when necessary. 7.3 Delivery Form Reinforcing steel is usually delivered in straight bars, and reinforcing steel with a diameter of not more than 16mm may also be delivered in coils. 7.4 Mechanical Properties 7.4.1 The mechanical property characteristics values such as lower yield strength ReL, tensile strength Rm, elongation after fracture A, and maximum total elongation Agt of reinforcing steel shall comply with the provisions of Table 6. Except for R°eL/ReL, which can be used as the maximum guaranteed value for delivery inspection, other mechanical characteristics values can be used as the minimum guaranteed value for delivery inspection. 7.4.2 For reinforcing steel with no obvious yield strength, the lower yield strength characteristic value ReL shall adopt the specified plastic elongation stren