Codeofchina.com is in charge of this English translation. In case of any doubt about the English translation, the Chinese original shall be considered authoritative.
This standard is formulated by reference to "Nickel and Nickel Alloy Plate, Sheet and Strip" (ISO 6208: 1992), "Nickel Plate, Sheet and Strip" (ASTM B162-99 (2005)) and "Nickel-Copper Alloy (UNS N04400) Plate, Sheet and Strip" (ASTM B127-05).
This standard replaces "Nickel and Nickel Alloy Strips" (GB/T 2072 1993) and partially replaces "Nickel and Its Alloy Sheets and Strips for Electronic Tube" (GB/T 11088-1989).
Compared with GB/T 2072-1993 and GB/T 11088-1989, major variations in this standard are as follows:
- Pure nickel designations N5, N7 and their chemical composition requirements were added. Thereinto, the chemical composition of N5 pure nickel is identical to that of designation NW2201 in ISO standards and designation UNS N02201 in ASTM standards while the chemical composition of N7 pure nickel is identical to that of designation NW2200 in ISO standards and designation UNS N02200 in ASTM standards;
- Nickel alloy designation NCu30 and its chemical composition requirements were added. Thereinto, the chemical composition is identical to that of designation NW4400 in ISO standards and designation UNS N04400 in ASTM standards;
- The width of strip is uniformly specified as 20mm~250 mm, and thereof the shortest length requirements are specified according to the strip thickness;
- Permissible thickness deviation of strip is uniformly specified as two-way deviation;
- Mechanical property requirements of strip of partial specifications at ambient temperature were added;
- Cupping test requirements of strips of partial specifications were improved.
- By reference to ISO standards and ASTM standards, the mechanical property and process property requirements of nickel and nickel alloy whose designations are N5, N7 and NCu30 were newly-added.
This standard was proposed by China Non-ferrous Metals Industry Federation.
This standard is under the jurisdiction of National Technical Committee on Nonferrous Metals of Standardization Administration of China.
This standard was drafted by Baoti Group Co., Ltd. and Shenyang Tongxing Industry Co., Ltd. Chief drafting staffs of this standard: Zhang Pinghui, Huang Yongguang, Li Xianjun, Zhang Mingxiang, Wang Li, Liu Gang and Liu Guanqiang.
The National Technical Committee on Nonferrous Metals of Standardization Administration of China is in charge of the explanation of this standard.
The previous editions of the standard replaced by this standard are as follows:
- GB/T 2072-1980, GB/T 2072-1993.
- GB/T 11088-1989.
Contents
Foreword I
1 Scope 1
2 Normative References 1
3 Requirements 1
4 Test Methods 3
5 Inspection Rules 4
6 Marking, Package, Transportation and Storage 5
7 Order (or Contract) Content 5
Nickel and Nickel Alloy Strips
镍及镍合金带材
1 Scope
This standard specifies the requirements, test methods, inspection rules and package, marking, transportation and storage as well as order content of nickel and nickel alloy strips.
This standard is applicable to nickel and nickel alloy strips used in instrumentation, telecommunication and electronics industry.
2 Normative References
The following standards contain provisions which, through reference in this text, constitute provisions of this national standard. For dated reference, subsequent amendments (excluding amending error in the text) to, or revisions of, any of these publications do not be applied. However, the parties whose enter into agreement according to these specifications are encouraged to research whether the latest editions of these references are applied or not.
GB/T 228-2002 Metallic Materials - Tensile Testing at Ambient Temperature
GB/T 4156 Metals; Cupping Testing Method (thickness 0.2~2mm)
GB/T 5235 Wrought Nickel and Nickel Alloy - Chemical Composition and Forms of Wrought Products
GB/T 8647 (All parts) Methods for Chemical Analysis of Nickel
GB/T 8888 Wrought Heavy Non-ferrous Metal Products-Packing, Marking, Transporting and Storing
YS/T 325 Methods for Chemical Analysis of Nickel-Copper Alloy (NiCu 28-2.5-1.5)
3 Requirements
3.1 Product classification3.1.1 Designation, state and specification
The designation, state and specification of products shall be in accordance with those specified in Table 1.
Table 1 Designation, State and Specification of Strip
Designation State Specification/mm
Thickness Width Length a
N4,N5,N6,N7,NMg0.1,DN,NSi0.19,
NCu40-2-1,NCu28-2.5-1.5,NW4-0.15,
NW4-0.1,NW4-0.07,NCu30 Soft
Semi-hard (Y2)
Hard 0.05~0.15 20~250 ≥5000
>0.15~0.55 ≥3000
>0.55~1.2 ≥2000
a As for strips with thickness of 0.55mm~1.20mm, it is permissible to deliver strips whose weight don’t exceed 15% of the batch weight and length is not less than 1m.
3.1.2 Marking examples
The product marks shall be expressed according to the sequence of product name, designation, supply state, specification and standard number. The making examples are listed as follows:
Example 1:
With thickness of 2.0 mm and width of 150 mm, ordinary soft strip made of NMg0.1 shall be marked as:
Nickel strip NMg0.1 M 2.0*150 GB/T 2072 - 2007
Example 2:
With thickness of 0.8 mm and width of 200 mm, ordinary semi-hard strip made of NCu28-2.5-1.5 shall be marked as:
Nickel strip NCu28-2.5-1.5 Y3 0.8*200 GB/T 2072 - 2007
Example 3
With thickness of 0.2 mm and width of 100 mm, high-level hard strip made of NW 4-0.15 shall be marked as:
Nickel strip NW4-0.15 Y high-level 0.2*100 GB/T 2072 - 2007
3.2 Chemical compositions
The chemical compositions of products shall meet the requirements of GB/T 5235.
3.3 Physical dimension and permissible deviation
3.3.1 The physical dimension and permissible deviation of strip shall meet the requirements specified in Table 2.
3.3.2 The strip shall be straight and even and slight waves are allowable. The side camber degree of strip shall be no more than 3 mm per meter.
3.3.3 Both sides of a strip shall be flush cut without crack and curling.
Table 2 Permissible Dimensional Deviation of Strips In mm
Thickness Permissible thickness deviation Permissible width deviation within specified width range
Ordinary Higher-level 20~150 >150~250
0.05~0.09 ±0.005 ±0.003 0
-0.6 0
-1.0
>0.09~0.15 ±0.010 ±0.007
>0.15~0.30 ±0.015 ±0.010
>0.30~0.45 ±0.020 ±0.015
>0.45~0.55 ±0.025 ±0.020
>0.55~0.85 ±0.030 ±0.025
>0.85~0.95 ±0.035 ±0.030
>0.95~1.20 ±0.040 ±0.035 0
-1.0 0
-1.5
Note 1: If the demander requires the thickness deviation only be"+" or "-", the value is two times of that in the Table.
Note 2: If not specified in contract, the permissible thickness deviation shall be in accordance with the requirements of ordinary grade.
3.4 Mechanical property
The mechanical property of strip at ambient temperature shall be in accordance with those specified in Table 3.
Table 3 Mechanical Property of Strip at Ambient Temperature
Designation Thickness of product/mm /mm State Tensile strength:
Rm/(N/mm2) Specified non-proportional elongation strength
Rp0.2/(N/mm2) Percentage elongation after fracture /%
A11.3 A50
N4, NW4-0.15
NW4-0.1, NW4-0.07 0.25~1.2 Soft (M) ≥345 — ≥30 —
Hard (Y) ≥490 — ≥2 —
N5 0.25~1.2 Soft (M) ≥350 ≥85a — ≥35
N7 0.25~1.2 Soft (M) ≥380 ≥105a — ≥35
Hard (Y) ≥620 ≥480a — ≥2
N6, DN, NMg0.1
NSi0.19 0.25~1.2 Soft (M) ≥392 — ≥30 —
Hard (Y) ≥539 — ≥2 —
NCu28-2.5-1.5 0.5~1.2
Soft (M) ≥441 — ≥25 —
Semi-hard (Y2) ≥568 — ≥6.5 —
NCu30 0.25~1.2 Soft (M) ≥480 ≥195a ≥25 —
Semi-hard (Y2) ≥500 ≥300a ≥25 —
Hard (Y) ≥680 ≥620a ≥2 —
NCu40-2-1 0.25~1.2 Soft (M)
Semi-hard (Y2)
Hard (Y) As measured — As measured —
Note: Where the demander has other requirements on the performance, parameters shall be determined through negotiation of both sides.
a The specified non-proportional elongation strength is not suitable to the strip whose thickness is less than 0.5 mm.
3.5 Processing properties
Except NCu28-2.5-1.5, NCu40-2-1 and NCu30, if the demander requires and notes it in contract, cupping test on the soft strips of other designations, shall be carried out. The punch diameter is 10mm and the results shall be in accordance with those specified in Table 4.
Table 4 Cupping test of Strip
Thickness of strip 0.10~0.20 >0.20~0.55 >0.55~1.20
Cupping depth, not less than 7.5 8.0 8.5
3.6 Surface quality
3.6.1 The surface of strips shall be smooth and clean, and shall be free from layering, crack, peeling, bubble, thorn, fold or inclusion.
3.6.2 The following defects are allowed on the surface of strips, including slight partial scratch, stain, pit, indentation, roll mark and grinding mark which will not make the permissible deviation of strip thickness exceeded.
3.6.3 Slight oxidation tint, shade and partial slight oil stain on the surface of strips are not regarded a basis for the relevant discard.
Foreword I
1 Scope
2 Normative References
3 Requirements
4 Test Methods
5 Inspection Rules
6 Marking, Package, Transportation and Storage
7 Order (or Contract) Content
Codeofchina.com is in charge of this English translation. In case of any doubt about the English translation, the Chinese original shall be considered authoritative.
This standard is formulated by reference to "Nickel and Nickel Alloy Plate, Sheet and Strip" (ISO 6208: 1992), "Nickel Plate, Sheet and Strip" (ASTM B162-99 (2005)) and "Nickel-Copper Alloy (UNS N04400) Plate, Sheet and Strip" (ASTM B127-05).
This standard replaces "Nickel and Nickel Alloy Strips" (GB/T 2072 1993) and partially replaces "Nickel and Its Alloy Sheets and Strips for Electronic Tube" (GB/T 11088-1989).
Compared with GB/T 2072-1993 and GB/T 11088-1989, major variations in this standard are as follows:
- Pure nickel designations N5, N7 and their chemical composition requirements were added. Thereinto, the chemical composition of N5 pure nickel is identical to that of designation NW2201 in ISO standards and designation UNS N02201 in ASTM standards while the chemical composition of N7 pure nickel is identical to that of designation NW2200 in ISO standards and designation UNS N02200 in ASTM standards;
- Nickel alloy designation NCu30 and its chemical composition requirements were added. Thereinto, the chemical composition is identical to that of designation NW4400 in ISO standards and designation UNS N04400 in ASTM standards;
- The width of strip is uniformly specified as 20mm~250 mm, and thereof the shortest length requirements are specified according to the strip thickness;
- Permissible thickness deviation of strip is uniformly specified as two-way deviation;
- Mechanical property requirements of strip of partial specifications at ambient temperature were added;
- Cupping test requirements of strips of partial specifications were improved.
- By reference to ISO standards and ASTM standards, the mechanical property and process property requirements of nickel and nickel alloy whose designations are N5, N7 and NCu30 were newly-added.
This standard was proposed by China Non-ferrous Metals Industry Federation.
This standard is under the jurisdiction of National Technical Committee on Nonferrous Metals of Standardization Administration of China.
This standard was drafted by Baoti Group Co., Ltd. and Shenyang Tongxing Industry Co., Ltd. Chief drafting staffs of this standard: Zhang Pinghui, Huang Yongguang, Li Xianjun, Zhang Mingxiang, Wang Li, Liu Gang and Liu Guanqiang.
The National Technical Committee on Nonferrous Metals of Standardization Administration of China is in charge of the explanation of this standard.
The previous editions of the standard replaced by this standard are as follows:
- GB/T 2072-1980, GB/T 2072-1993.
- GB/T 11088-1989.
Contents
Foreword I
1 Scope 1
2 Normative References 1
3 Requirements 1
4 Test Methods 3
5 Inspection Rules 4
6 Marking, Package, Transportation and Storage 5
7 Order (or Contract) Content 5
Nickel and Nickel Alloy Strips
镍及镍合金带材
1 Scope
This standard specifies the requirements, test methods, inspection rules and package, marking, transportation and storage as well as order content of nickel and nickel alloy strips.
This standard is applicable to nickel and nickel alloy strips used in instrumentation, telecommunication and electronics industry.
2 Normative References
The following standards contain provisions which, through reference in this text, constitute provisions of this national standard. For dated reference, subsequent amendments (excluding amending error in the text) to, or revisions of, any of these publications do not be applied. However, the parties whose enter into agreement according to these specifications are encouraged to research whether the latest editions of these references are applied or not.
GB/T 228-2002 Metallic Materials - Tensile Testing at Ambient Temperature
GB/T 4156 Metals; Cupping Testing Method (thickness 0.2~2mm)
GB/T 5235 Wrought Nickel and Nickel Alloy - Chemical Composition and Forms of Wrought Products
GB/T 8647 (All parts) Methods for Chemical Analysis of Nickel
GB/T 8888 Wrought Heavy Non-ferrous Metal Products-Packing, Marking, Transporting and Storing
YS/T 325 Methods for Chemical Analysis of Nickel-Copper Alloy (NiCu 28-2.5-1.5)
3 Requirements
3.1 Product classification3.1.1 Designation, state and specification
The designation, state and specification of products shall be in accordance with those specified in Table 1.
Table 1 Designation, State and Specification of Strip
Designation State Specification/mm
Thickness Width Length a
N4,N5,N6,N7,NMg0.1,DN,NSi0.19,
NCu40-2-1,NCu28-2.5-1.5,NW4-0.15,
NW4-0.1,NW4-0.07,NCu30 Soft
Semi-hard (Y2)
Hard 0.05~0.15 20~250 ≥5000
>0.15~0.55 ≥3000
>0.55~1.2 ≥2000
a As for strips with thickness of 0.55mm~1.20mm, it is permissible to deliver strips whose weight don’t exceed 15% of the batch weight and length is not less than 1m.
3.1.2 Marking examples
The product marks shall be expressed according to the sequence of product name, designation, supply state, specification and standard number. The making examples are listed as follows:
Example 1:
With thickness of 2.0 mm and width of 150 mm, ordinary soft strip made of NMg0.1 shall be marked as:
Nickel strip NMg0.1 M 2.0*150 GB/T 2072 - 2007
Example 2:
With thickness of 0.8 mm and width of 200 mm, ordinary semi-hard strip made of NCu28-2.5-1.5 shall be marked as:
Nickel strip NCu28-2.5-1.5 Y3 0.8*200 GB/T 2072 - 2007
Example 3
With thickness of 0.2 mm and width of 100 mm, high-level hard strip made of NW 4-0.15 shall be marked as:
Nickel strip NW4-0.15 Y high-level 0.2*100 GB/T 2072 - 2007
3.2 Chemical compositions
The chemical compositions of products shall meet the requirements of GB/T 5235.
3.3 Physical dimension and permissible deviation
3.3.1 The physical dimension and permissible deviation of strip shall meet the requirements specified in Table 2.
3.3.2 The strip shall be straight and even and slight waves are allowable. The side camber degree of strip shall be no more than 3 mm per meter.
3.3.3 Both sides of a strip shall be flush cut without crack and curling.
Table 2 Permissible Dimensional Deviation of Strips In mm
Thickness Permissible thickness deviation Permissible width deviation within specified width range
Ordinary Higher-level 20~150 >150~250
0.05~0.09 ±0.005 ±0.003 0
-0.6 0
-1.0
>0.09~0.15 ±0.010 ±0.007
>0.15~0.30 ±0.015 ±0.010
>0.30~0.45 ±0.020 ±0.015
>0.45~0.55 ±0.025 ±0.020
>0.55~0.85 ±0.030 ±0.025
>0.85~0.95 ±0.035 ±0.030
>0.95~1.20 ±0.040 ±0.035 0
-1.0 0
-1.5
Note 1: If the demander requires the thickness deviation only be"+" or "-", the value is two times of that in the Table.
Note 2: If not specified in contract, the permissible thickness deviation shall be in accordance with the requirements of ordinary grade.
3.4 Mechanical property
The mechanical property of strip at ambient temperature shall be in accordance with those specified in Table 3.
Table 3 Mechanical Property of Strip at Ambient Temperature
Designation Thickness of product/mm /mm State Tensile strength:
Rm/(N/mm2) Specified non-proportional elongation strength
Rp0.2/(N/mm2) Percentage elongation after fracture /%
A11.3 A50
N4, NW4-0.15
NW4-0.1, NW4-0.07 0.25~1.2 Soft (M) ≥345 — ≥30 —
Hard (Y) ≥490 — ≥2 —
N5 0.25~1.2 Soft (M) ≥350 ≥85a — ≥35
N7 0.25~1.2 Soft (M) ≥380 ≥105a — ≥35
Hard (Y) ≥620 ≥480a — ≥2
N6, DN, NMg0.1
NSi0.19 0.25~1.2 Soft (M) ≥392 — ≥30 —
Hard (Y) ≥539 — ≥2 —
NCu28-2.5-1.5 0.5~1.2
Soft (M) ≥441 — ≥25 —
Semi-hard (Y2) ≥568 — ≥6.5 —
NCu30 0.25~1.2 Soft (M) ≥480 ≥195a ≥25 —
Semi-hard (Y2) ≥500 ≥300a ≥25 —
Hard (Y) ≥680 ≥620a ≥2 —
NCu40-2-1 0.25~1.2 Soft (M)
Semi-hard (Y2)
Hard (Y) As measured — As measured —
Note: Where the demander has other requirements on the performance, parameters shall be determined through negotiation of both sides.
a The specified non-proportional elongation strength is not suitable to the strip whose thickness is less than 0.5 mm.
3.5 Processing properties
Except NCu28-2.5-1.5, NCu40-2-1 and NCu30, if the demander requires and notes it in contract, cupping test on the soft strips of other designations, shall be carried out. The punch diameter is 10mm and the results shall be in accordance with those specified in Table 4.
Table 4 Cupping test of Strip
Thickness of strip 0.10~0.20 >0.20~0.55 >0.55~1.20
Cupping depth, not less than 7.5 8.0 8.5
3.6 Surface quality
3.6.1 The surface of strips shall be smooth and clean, and shall be free from layering, crack, peeling, bubble, thorn, fold or inclusion.
3.6.2 The following defects are allowed on the surface of strips, including slight partial scratch, stain, pit, indentation, roll mark and grinding mark which will not make the permissible deviation of strip thickness exceeded.
3.6.3 Slight oxidation tint, shade and partial slight oil stain on the surface of strips are not regarded a basis for the relevant discard.
Contents of GB/T 2072-2007
Foreword I
1 Scope
2 Normative References
3 Requirements
4 Test Methods
5 Inspection Rules
6 Marking, Package, Transportation and Storage
7 Order (or Contract) Content
