2b Sheet Metal Finish

2B sheet metal finish is a standard cold rolled stainless steel surface produced through annealing, 산세, 가벼운 스킨 패스 롤링. The name “2B” originates from traditional stainless steel finishing classifications, where “2” refers to cold rolling and “B” refers to the bright skin-pass process.

설명

2B finish is one of the most widely used surface finishes for stainless steel sheet metal. It is commonly applied to cold rolled stainless steel sheets and coils used in industrial equipment, 주방 가전 제품, construction materials, 화학 탱크, 정밀 가공.

The 2B surface is known for its smooth appearance, moderate reflectivity, 좋은 평탄도, and excellent processing performance. Because of its balanced surface quality and cost efficiency, it has become the standard industrial finish for stainless steel sheets worldwide.

1. What Is 2B Finish?

2B finish is a cold rolled stainless steel surface produced through:

냉간 압연
Heat treatment (가열 냉각)
산세
Final light skin-pass rolling

이 과정에서 생성되는:

A smooth and uniform matte surface
Good dimensional accuracy
Stable mechanical properties
Suitable surface condition for further processing

Compared with rough hot rolled surfaces, 2B finish provides much better flatness and surface consistency.

2. Origin of the Name “2B”

The name “2B” comes from historical stainless steel rolling and finishing classification systems developed in the steel industry.

Meaning of “2”

The number “2” refers to:

Cold rolled stainless steel processing

In stainless steel surface standards:

No.1 finish → Hot rolled surface
2-series finishes → Cold rolled surfaces

Meaning of “B”

The letter “B” refers to:

Bright finish obtained through final skin-pass rolling

This final light rolling process improves:

표면 매끄러움
평탄
반사율
Dimensional consistency

그러므로, “2B” essentially means:

냉간 압연, 열처리, 절인, and lightly bright rolled stainless steel surface.

3. Manufacturing Process of 2B Finish

The typical production steps include:

Process Step	기능
냉간 압연	Reduces thickness and improves surface quality
가열 냉각	Restores ductility and removes stress
산세	Removes oxide scale
스킨 패스 롤링	Improves smoothness and brightness

The final result is a smooth industrial stainless steel surface suitable for fabrication and further polishing.

4. Surface Characteristics of 2B Finish

재산	형질
표면 외관	Smooth matte gray
반사율	보통의
평탄	훌륭한
Surface Roughness	낮은
Processing Performance	매우 좋은
산업용	Extremely common

2B finish is smoother than No.1 finish but less reflective than BA or mirror finishes.

5. Comparison with Other Stainless Steel Finishes

마치다	표면 외관	주요 응용 프로그램
No.1	Rough hot rolled	Heavy industrial plates
2비	부드러운 매트	일반 산업용
학사	Bright reflective	장식 응용
4호	Brushed satin	Architecture and appliances
Mirror 8K	반사율이 높음	장식 패널