GOST 2624-77 Capillary Copper and Brass Tubes

GOST1 11383-75 Light-Wall Copper and Brass Tubes

Tubes are produced of copper grades М1; М2; М3; chemical analysis as per GOST 859-2001; and brass grades are L96; L68 L63; chemical analysis as per GOST 15527-2004.

Outside diameter: 1,2 - 28,0 mm
(1,2; 1,3; 1,4; 1,5; 1,6; 1,7; 1,8; 1,9; 2,0; 2,1; 2,2; 2,3; 2,2; 2,4; 2,5; 2,6; 2,8; 3,0; 3,2; 3,4; 3,5; 3,6; 3,8; 4,0; 4,5; 4,8; 5,0; 5,5; 6,0; 7,0; 7,5 ; 8,0; 8,5; 9,0; 9,5; 10,0; 10,2; 11,0; 12,0; 13,0; 14,0; 15,0; 16,0; 17,0; 18,0; 19,0; 20,0; 21,0; 22,0; 24,0; 28,0)

Wall thickness: 0,15 – 0,90 mm
(0,15; 0,20; 0,25; 0,30; 0,35; 0,40; 0,45; 0,50; 0,55; 0,60;0,65; 0,70; 0,80; 0,85; 0,90)

Notes:
1. Mass fraction of elements in brass grade L68 intended for production of special-purpose articles shall not exceed the following values: iron 0,07%, antimony (stibium) – 0,002%, phosphorus 0,005%, arsenic 0,005%, sulfur 0,002% (total other elements is 0,2%).

2. Mass fraction of nickel in brass grades L96, L90, L80, L70, L68, L63, L60 is permitted up to 0,3%.

3. Mass fraction of stannum, aluminum, manganese and silicon included into total other elements can be determined in all brass grades by agreement with the customer.

4. Brass grade L70 used for pressure-gage and heat-exchanger tubes mass fraction of arsenic is permitted up to 0,06% at the expense of copper mass fraction not included into total other elements.

5. Mass fraction of lead in brass grade L63 used in food shall not exceed 0,05%.

6. Mass fraction of iron in antimagnetic alloys shall not exceed 0,03%.

7. Calculated density is indicated for theoretical weight calculation.

8. Impurities not shown in the table shall be allowed in total other elements specified by agreement between the customer and manufacturer.

Tolerance Limits:

Diameter:
D 1,2 – 7,5 mm:

ordinary precision ± 0,10 mm;
improved precision ± 0,05 mm;

D 8,0 – 10,2 mm:

ordinary precision - 0,15 mm;
improved precision - 0,10 mm;

D 11,0 – 18,0 mm:

ordinary precision - 0,20 mm;
improved precision - 0,15 mm;

D 19,0 – 28,0 mm:

ordinary precision - 0,24 mm;
improved precision - 0,20 mm.

Wall:
S 0,15; 0,2 0mm:

ordinary precision ± 0,03 mm
improved precision ± 0,02 mm;

S 0,25 – 0,35 mm:

ordinary precision ± 0,04 mm;
improved precision ± 0,03 mm;

S 0,40 – 0,45 mm:

ordinary precision ± 0,05 mm;
improved precision ± 0,04 mm;

S 0,50 mm;

ordinary precision ± 0,06 mm;
improved precision ± 0,05 mm;

S 0,60 mm;

ordinary precision ± 0,08 mm;
improved precision ± 0,06 mm;

S 0,65 – 0,90 mm:

ordinary precision ± 0,10 mm;
improved precision ± 0,08 mm;

Notes:
1. Tubes diam. up to 10 mm can be produced in coils not less than 10 m long. Tubes in length over 3 up to 4,5 m long can be produced in sections.

2. Curvature of solid tube sections per 1 m of tube length shall not exceed values in Table 1.

Table 1

3. Tubes shall be subject to tensile test (tensile strength, elongation after fracture), flattening test.

4. Tubes shall be furnished in soft or solid condition. Mechanical properties of tubes shall conform to those in Table 2.

5. Tubes can be produced with tighter limit tolerances, as well as with composite limit tolerances for outside diameter wall thickness under agreement between manufacturer and customer.

Table 2