GB/T 26723-2025Cold rolled titanium strip coil (English PDF)

4.1 Product Classification

The product's brand, condition, and specifications are shown in Table 1.

Table 1.Grade, Condition, Specification Brand Status Specifications (thickness x width x length) mm TA0, TA1G, TA2G, TA3G, TA4G, TA8, TA8-1, TA9, TA9-1, TA10, TA18 Annealed state (M), cold-worked state (Y) (0.10~5.00)x(500~1500)xL

4.2 Product Marking

Product markings are indicated in the following order. product name, brand, status, specifications, and document number.

Example. A product manufactured using TA2G, in an annealed state, with a thickness of 0.6 mm and a width of 1200 mm, is marked as.

5.1 Chemical composition

5.1.1 The chemical composition of the product shall comply with the provisions of GB/T 3620.1.

5.1.2 When the buyer takes samples from the product for chemical composition retesting, the permissible deviation of the chemical composition shall comply with the provisions of GB/T 3620.2.

5.2 External dimensions and their permissible deviations

5.2.1 The allowable thickness deviation of the product shall conform to the specifications in Table 2.The level of allowable thickness deviation shall be specified in the purchase order; otherwise, it shall be determined by the allowable tolerance.

Standard precision is available. Table 2 Thickness Tolerance The unit is millimeters. Nominal thickness Thickness tolerance a Ordinary precision High precision 0.10~0.15 ±0.015 ±0.010 >0.15~0.20 ±0.02 ±0.015 >0.20~0.30 ±0.03 ±0.02 >0.30~0.50 ±0.04 ±0.02 >0.50~0.70 ±0.05 ±0.03 >0.70~1.00 ±0.08 ±0.06 >1.00~1.50 ±0.10 ±0.07 >1.50~2.00 ±0.15 ±0.08 >2.00~2.50 ±0.18 ±0.10 >2.50~4.00 ±0.20 ±0.14 >4.00~4.75 ±0.25 ±0.16 >4.75~5.00 ±0.30 ±0.20 a. When the buyer requires a unidirectional deviation where all thickness tolerances are " " or all "-", the value should be twice the corresponding value in the table.

5.2.2 The allowable deviation of the product width shall conform to the provisions of Table 3. Table 3 Width Tolerance The unit is millimeters. Nominal width Width tolerance a Trimmed edges or not 500~610 ±0.4 ±3.0 >610~900 ±0.6 ±4.0 Table 3 Width Tolerances (Continued) The unit is millimeters. Nominal width Width tolerance a Trimmed edges or not >900~1250 ±1.0 ±4.0 >1250~1500 ±1.0 ±6.0 a. When the buyer requires a unidirectional deviation where all width deviations are " " or all "-", the value should be twice the corresponding value in the table.

5.2.3 The side curvature of the product shall not exceed 3mm over any length of 1000mm.

5.2.4 The product's unevenness should not exceed 15mm, and the wave height ratio at any length position should not exceed 3%.

Note. Wave height ratio is the ratio of the unevenness within a specified length range to the specified length.

5.2.5 The product should be securely rolled up and kept as cylindrical as possible without curling edges. The inner diameter of the roll should be specified in the order form.

5.2.6 After removing the inner and outer three rings at the head or tail, the pyramid shape of the trimmed product should not exceed 20mm, and the pyramid shape of the untrimmed product should not exceed [missing value]. 40mm.

5.3 Tensile properties at room temperature

The room temperature tensile properties of annealed products should conform to the specifications in Table 4.The room temperature tensile properties of products in other states shall be negotiated between the supplier and the buyer. Sure.

Table 4 Tensile properties at room temperature Brand Level Ia Level IIa tensile strength Rm MPa Specified plastic elongation strength Rp0.2 MPa Elongation after fracture A50mm tensile strength Rm MPa Specified plastic elongation strength Rp0.2 MPa Elongation after fracture A50mm TA0 280~420 >=170 >=40 >=280 >=170 >=32 TA1G >=240 140~310 >=30 >=240 160~310 >=24 TA2G >=345 210~450 >=25 >=400 275~450 >=20 TA3G >=450 380~550 >=18 >=500 380~550 >=18 TA4G >=550 485~655 >=17 >=650 >=550 >=15 TA8 >=345 275~450 >=20 - - - TA8-1 >=240 140~310 >=24 - - - TA9 >=345 275~450 >=20 - - - TA9-1 >=240 140~310 >=24 - - - TA10b Category A >= 485 >= 345 >= 18 - - - Category B >=345 >=275 >=25 - - - TA18 >=620 >=485 >=15 - - - Pure titanium products are classified into Grade I and Grade II for room temperature tensile properties. Unless otherwise specified in the order, Grade I products will be supplied.

The room temperature tensile properties of TA10 strip are divided into Class A and Class B. Class B is suitable for composite materials used in composite boards. Unless otherwise specified in the order, Class A shall be supplied.