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Internal control standards

Strictly in accordance with GB / T 2059-2000, the standard for enterprise products with the chemical composition of copper, size deviation, mechanical properties, test, packaging and storage;

1, with the chemical composition of materials produced by the national standard should meet the national standard GB/T5121-1996. According to European environmental standards for production, will lead (Pb) content control in less than 0.008%, and the remaining ingredients in accordance with the relevant standards.

Level

Cu+Ag

%)Not less than

Chemical composition,% not more than

Fe

Pb

P

Zn

Ni

High standard grade

99.95

0.005

0.005

0.002

0.003

0.002

Level of internal control

99.90

0.009

0.008

0.004

0.005

0.002

Note: The data presented in this table the maximum impurities and other impurities to ensure compliance with this standard.

2, Dimensions and tolerances

2。1 The thickness and width tolerance

Thickness

Thickness tolerance (less than)

Width tolerance (less than)

Accuracy of internal control

Fine cut

Rough cut

0.10—0.20

0.015

0.15

0.2

0.21—0.4

0.015

0.15

0.2

0.4—0.50

0.020

0.15

0.2

0.51—0.80

0.025

0.15

0.2

0.81—1.00

0.030

0.15

0.2

1.01—1.2

0.035

0.15

0.2

1.21—1.5

0.04

0.15

0.2

1.51—2.0

0.045

0.15

0.2

Note: a), tolerances are not specified in the task single case of internal control in accordance with the negative bias and precision production, testing;

b), precision cutting tool relative to the fixed cutting edge lining, rough cutting tool relative to the activities lined cutting edge;

 

2.2 Plate-type roughness

Thickness, mm

Roughness, mm / m is not greater than

0。1~0。5

10

0.5~1.2

5

2.3 The curvature of the side strip

Width, mm

Side bending, mm / m is not greater than

≤50

5

50~100

4

100~500

3

3 Mechanical Properties  

3。1 The physical performance standards

 

Trademark

Status

Tensile strength (MPa)

Elongation
%

Vickers hardness
HV

Internal control

GB

Internal control

GB

Internal control

GB

C1100 (T2)

Soft state
M

245—265

≥205

≥40

≥30

50—70

--

Soft state of semi-hard
(Y4)

255—270

215—275

≥30

≥25

65—95

55—100

Semi-hard state
(Y2)

260—320

245—345

≥15

≥8

85—105

75—120

More rigid state of semi-hard
(Y1)

280—330

270—380

≥8

≥6

90—110

75—120

Hard(Y)

310—380

≥295

≥3

≥3

100—120

≥80

Special hardware(TY)

≥350

--

≥3

--

≥115

--

3.2 0.4 The following mechanical properties of soft-state strip (punch test standard)

Punch radius

Standard

Thickness

0.13—0.18

0.19—0.30

0.31—0.40

0.4More

10mm

Internal control

≥8.5

≥9.2

≥9.4

Only tensile test

10mm

GB

≥7.5

≥8.0

≥9.0

 Only tensile test

 

 

 

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