I. Q235 carbon steel plate
(I) Material characteristics
—— Chemical composition
Mainly composed of iron (Fe), with carbon (C) content of about 0.14% - 0.22%, manganese (Mn) content of 0.30% - 0.65%, silicon (Si) not exceeding 0.30%, and low sulfur (S) and phosphorus (P) impurities..
——Mechanical properties
Excellent plasticity and good weldability. The yield strength is about 235 MPa, the tensile strength is between 370 - 500 MPa, and the elongation is 21% - 26%, which is convenient for processing.
——Price advantage
The price is affordable, which is an important consideration for CHNSMILE when controlling costs. For some projects with moderate performance requirements and a focus on cost, Q235 carbon steel plate has obvious advantages.
(II) Application scenarios
——Construction field
Widely used in structural components such as building frames and steel beams. In CHNSMILE's construction projects, such as industrial plants and civil building construction, its good weldability helps with construction and reduces costs.
——Mechanical manufacturing
Often used to manufacture non-critical parts such as mechanical casings and bases. Meets the requirements of strength and processing performance and is frequently used in CHNSMILE's mechanical products.
——General industry
Can be used to make pipes, fittings, shelves, etc. In ordinary industrial environments, CHNSMILE takes advantage of its cost advantage to achieve economical and efficient production.
II. 304 stainless steel plate
(I) Material characteristics
——Chemical composition
Contains iron (Fe), chromium (Cr, 18% - 20%), nickel (Ni, 8% - 10.5%), etc. Chromium improves oxidation resistance and corrosion resistance, and nickel increases toughness and corrosion resistance.
——Mechanical properties
The yield strength is about 205 MPa, the tensile strength is above 520 MPa, the elongation is more than 40%, and it has good cold and hot workability, but welding is relatively complex.
——Corrosion resistance
Outstanding, it can resist various acid and alkali corrosions and is suitable for fields with high requirements for hygiene and corrosion resistance. It is a commonly used material for CHNSMILE's high-end products.
(II) Application scenarios
——Food industry
Used for food equipment, containers, etc. CHNSMILE strictly follows food hygiene standards, and its corrosion-resistant and hygienic properties ensure food safety.
——Chemical field
Used to manufacture reaction kettles, pipes, etc. In CHNSMILE's chemical projects, it resists corrosion to ensure safe and stable production, and its high-temperature resistance is also suitable for high-temperature processes.
——Medical aspect
Used to make medical devices, etc. CHNSMILE pays attention to the quality of medical products. Its corrosion resistance and biocompatibility ensure medical safety.
——Decoration field
Used for building decoration, etc. Beautiful and corrosion-resistant, such as stainless steel railings, etc., improve the decorative effect and quality of CHNSMILE products.
III. Key points for material selection
(I) According to the use environment
—— Corrosive environment
In a strongly corrosive environment, choose 304 stainless steel plate. Q235 carbon steel plate is prone to rust. CHNSMILE needs to weigh the anti-corrosion cost and effect.
——General environment
In an ordinary environment, Q235 carbon steel plate can meet the requirements. CHNSMILE can perform surface treatment according to appearance and rust prevention requirements.
(II) Combined with product performance requirements
—— Strength requirements
For high strength and a lot of welding, Q235 carbon steel plate is suitable. When CHNSMILE has high requirements for both strength and corrosion resistance, other materials or treatments can be considered.
——Hygiene and aesthetic requirements
In the food, medical and decoration fields, hygiene and aesthetics are important. 304 stainless steel plate is the first choice for CHNSMILE, while Q235 carbon steel plate is not applicable.
(III) Considering cost factors
—— Limited budget
When the budget is limited, the price advantage of Q235 carbon steel plate is very attractive to CHNSMILE, but the service life and maintenance cost should be comprehensively considered.
——Ample budget
For high requirements on quality and performance and sufficient budget, 304 stainless steel plate can provide reliable guarantee for CHNSMILE and is more cost-effective in the long run.
In short, when choosing materials, CHNSMILE needs to comprehensively consider factors such as use environment, product performance and cost to achieve the optimal choice and ensure the balance of product quality, performance and cost.