Gnee Steel (Tianjin) Co., Ltd. is one of the most reliable manufacturers and suppliers of bdck cold rolled steel for battery in China. Welcome to wholesale customized bdck cold rolled steel for battery at low price from our factory. If you have any enquiry about free sample and cheap products, please feel free to email us.
BDCK is a product tailor-made for battery cases with high quality requirements. Product production each process is produced and managed according to special control standards.
GNEE battery shell steel is specially designed for punching alkaline or secondary battery shells. It is suitable for:
1) Battery case using high-speed, deep drawing and thinning and stretching processes:
2) Battery cases with strict appearance quality requirements;
3) Pre-nickel-plated or post-nickel-plated battery case.
BDCK battery shell steel grade and application:
Standard No. |
Steel grade |
Surface structure |
Nominal thickness |
Application |
|
BZJ495-2008 |
BDCK |
(B) |
0.25~0.30 |
Alkaline battery steel shell |
|
BDCK |
(D) |
0.25~0.50 |
Rechargeable battery steel shell |
BDCK battery shell steel chemical composition:
Steel grade |
Chemical composition % |
|||||
|
C |
Si |
Mn |
P |
S |
Alt |
|
|
BDCK |
≤0.05 |
≤0.03 |
≤0.50 |
≤0.03 |
≤0.03 |
≤0.06 |
BDCK battery shell steel mechanical performance:
Steel grade |
Tensile |
After Breakage Percent Elongation b |
HRB |
|
BDCK |
275 |
34 |
40~56 |
a: using P14 sample of GB/T228
BDCK battery shell steel allowable dimension deviation:
Steel grade |
Surface structure |
Nominal thickness |
Allowable thickness deviation |
Allowable width deviation |
|
BDCK |
Glaze(B) |
0.25~0.30 |
-0.007~+0.003 |
Trimming: 0~+3 |
|
BDCK |
Pitted (D) |
0.25~0.50 |
±0.01 |
BDCK battery shell steel surface roughness:
Steel grade |
Surface structure |
Even roughness Ra |
|
BDCK |
Glaze(B) |
Ra ≤0.5μm |
|
BDCK |
Pitted (D) |
0.5μm<Ra≤1.0μm |
Main product features
1) Good stamping formability, with characteristics of deep drawing, thinning, and small ears.
2) High dimensional accuracy
Thickness accuracy of pitted battery case steel: +0.01mm; .
Slightly negative tolerance design of smooth battery case steel to meet user stamping requirements:
-0.007mm~0.003mm (adaptive thickness: 0.25~0.3mm).
3) High surface quality
The characteristics of high-purity steel can reduce the ‘beach holes’ defects caused by the material;
Excellent inherent quality characteristics of materials can reduce ‘snowflake spot’ defects caused by materials;
High-level surface quality and control can reduce the quality risks posed by materials to stamping.
Our customers:
About Us:
GNEE Company has been specializing in the production and export of cold rolled steel, galvanized steel and galvalume steel for nearly 16 years, professionally and efficiently meeting the needs of customers. Since its establishment, with high-quality products and services, it has now established a long-term, close Partnership. With customers in more than 200 countries, its cold-rolled steel, zinc steel and zinc-aluminum coated steel have gained a good reputation in overseas markets.
The main steel products are cold-rolled steel, hot-dip galvanized steel, hot-dip galvalume steel, hot-dip galvanized steel, and electro-galvanized steel with a variety of zinc or zinc-aluminum thicknesses and specifications for you to choose from. You can get almost any steel grade you need like SPCC, SPCD, DC01, DC04, DC06 DX56D+Z, SECC, SGCC, DX51D+Z, DX51D+ZF, SPTE, DX51D+AZ, DX51D+ZAM, etc.
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