Tấm thép không gỉ: Các loại, Công dụng, và tiêu chuẩn

Stainless steel plates are essential in various industries due to their corrosion resistance and versatility. They are classified by manufacturing method, độ dày, organizational characteristics, and use. This guide provides an overview of their types, ứng dụng, and technical standards.

Types of Stainless Steel Plates

Classification by Manufacturing Method

1. Hot-Rolled Plates
2. Cold-Rolled Plates

Classification by Thickness

1. Thin Plates: 0.5-4 mm
2. Tấm dày: 4.5-35 mm

Classification by Organizational Characteristics

1. Austenite
2. Austenite-Ferrite
3. Ferrite
4. Martensite
5. Lượng mưa cứng lại

Classification by Surface Characteristics

1. Galvanized Plates: Hot-dip and electrogalvanized
2. Tin-Coated Plates
3. Composite Steel Plates
4. Color-Coated Steel Plates

Classification by Use

1. Bridge Steel Plates
2. Boiler Steel Plates
3. Shipbuilding Steel Plates
4. Armored Steel Plates
5. Automobile Steel Plates
6. Roofing Steel Plates
7. Structural Steel Plates
8. Electrical Steel Plates (Silicon Steel Sheets)
9. Spring Steel Plates
10. Người khác

Applications of Stainless Steel Plates

Stainless steel plates are used in industries such as chemical, food, medicine, papermaking, petroleum, and atomic energy. They are also found in construction, dụng cụ nhà bếp, tableware, vehicles, và đồ dùng gia đình. They need to withstand the corrosion of acids like oxalic acid, axit sulfuric, axit nitric, phosphoric acid, formic acid, and acetic acid.

Technical Standards

To ensure mechanical properties like yield strength, độ bền kéo, sự kéo dài, and hardness, stainless steel plates undergo heat treatments such as annealing, solution treatment, and aging before delivery.

Tiêu chuẩn:

• Chinese Standards: GB/T423T-92, GB/T14975-2002, GB/T14976-2002, GB/T13296-91, GB/T12770-91, GB/T12771-91
• American Standards: ASTM A213/A213-99a, ASTN312/A312M-00b, ASTM A269-00, ASTM A511-96

Common Japanese Grades for Ordinary and Mechanical Structures

JIS Series:

1. Ordinary Structural Steel:
   • SS400: Steel for structures with a tensile strength of 400 MPa.
   • SPHC: General hot-rolled steel plates and strips.
   • SPHD: Hot-rolled steel plates and strips for stamping.
   • SPHE: Hot-rolled steel plates and strips for deep drawing.
   • SPCC: Cold-rolled carbon steel sheets and strips for general use, equivalent to Chinese Q195-215A grade.
   • SPCD: Cold-rolled carbon steel sheets and strips for stamping, equivalent to China’s 08AL (13237).
   • SPCE: Cold-rolled carbon steel sheets and strips for deep drawing, equivalent to China’s 08AL (5213).
2. Mechanical Structure Steel:
   • Represented by “S” + carbon content + letter code (C, CK).

Stainless Steel Plate Properties

Chống ăn mòn

Stainless steel plates have excellent corrosion resistance due to their alloy composition, especially chromium, which forms a protective passivation film on the surface. This film prevents oxidation and enhances corrosion resistance. Tuy nhiên, if the film is damaged, the resistance decreases.

High-Temperature Oxidation Resistance

Stainless steel plates resist high-temperature oxidation, but the rate depends on exposure environment and product form.

Physical Properties

The heat transfer coefficient of stainless steel is influenced by thermal conductivity, film heat dissipation coefficient, and surface condition. Stainless steel maintains a clean surface, providing better heat transfer than metals with higher thermal conductivity.

Silicon Steel Sheet Grades

Chinese Grade Representation

1. Cold-Rolled Non-Oriented Silicon Steel Strip (Tờ giấy):
   • DW + iron loss value (100 lần) + thickness value (100 lần).
2. Cold-Rolled Oriented Silicon Steel Strip (Tờ giấy):
   • ĐQ + iron loss value (100 lần) + thickness value (100 lần).
3. Hot-Rolled Silicon Steel Sheet:
   • DR + iron loss value (100 lần) + thickness value (100 lần).

Japanese Grade Representation

1. Cold-Rolled Non-Oriented Silicon Steel Strip:
   • Nominal thickness + code A + iron loss value.
2. Cold-Rolled Oriented Silicon Steel Strip:
   • Nominal thickness + code G or P + iron loss value.

Electroplated Tin Plate and Hot-Dip Galvanized Plate

1. Electroplated Tin Plate: Also known as tinplate, is used for canned packaging, cable sheaths, and small hardware due to its corrosion resistance and non-toxicity.

Weight Calculation of Stainless Steel Plates

• 304 Tấm thép không gỉ: độ dày (mm) x Width (tôi) x Length (tôi) x Density
• 316 Tấm thép không gỉ: độ dày (mm) x Width (tôi) x Length (tôi) x Density
• 430 Tấm thép không gỉ: độ dày (mm) x Width (tôi) x Length (tôi) x Density

Tỉ trọng:

• 316 thép không gỉ: 7.98
• 4 Dòng thép không gỉ: 7.75
• Other Materials: 7.93

Stainless steel plates offer a variety of options for different applications and are an essential material in many industries. Proper selection based on specific requirements is crucial to ensure optimal performance and longevity.

Kim loại Teda Ganghua -17 năm
Nhà cung cấp tấm/tấm thép không gỉ

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