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Difference Between 304 SS Casting and 316SS Casting Parts
Chemical composition
The main components of 304 stainless steel include chromium (Cr) and nickel (Ni), with chromium content typically ranging from 18% to 20% and nickel content from 8% to 10.5%. 316 stainless steel adds 2%-3% molybdenum (Mo) to 304, which makes it more resistant to corrosion in certain environments .
Corrosion resistance
304 stainless steel has excellent corrosion resistance and can resist the corrosion of most oxidizing acids and alkalis. However, in environments containing chloride ions, such as seawater or certain chemicals, its resistance to corrosion may be affected, and rusting or corrosion may occur . In contrast, 316 stainless steel has significantly improved resistance to chloride corrosion due to the addition of molybdenum, and is particularly suitable for Marine environments or situations where exposure to corrosive chemicals is required .
Mechanical performance
304 stainless steel has good mechanical property and welding performance, can absorb a certain amount of mechanical stress, suitable for most of the welding process, including electric arc welding, TIG welding, MIG welding, etc. Meanwhile, 304 stainless steel performs well in cold working and can be formed into complex shapes through cold rolling, cold bending, stamping and other processes .316 stainless steel, while maintaining these basic properties, has improved heat resistance and high-temperature strength due to its higher nickel content and the addition of molybdenum, making it particularly suitable for manufacturing equipment in high-temperature environments .
Scope of application
304 stainless steel is widely used in food processing equipment, kitchenware, medical devices and other scenarios with high requirements for hygiene and cleanliness due to its superior corrosion resistance and good machinability. In addition, 304 stainless steel is often used in building curtain walls, railings and various decorative structures . 316 stainless steel, due to its stronger corrosion resistance and heat resistance, is widely used in Marine equipment, chemical industry, dye industry, paper industry and other places that require contact with corrosive chemicals or high temperature environment .
All of our products are custom made according to clients' drawings. Our work flow chart is as belows:
Material performance advantages
Corrosion resistance: Stainless steel (such as 304, 316, etc.) has strong corrosion resistance in humid, chemical or high-temperature environments and is suitable for industries such as chemical engineering, Marine equipment, and food processing.
High strength and heat resistance: Stainless steel can maintain structural stability at high temperatures and is suitable for scenarios such as engine components and industrial stoves.
Hygiene and safety: The medical and food industries have high requirements for smooth and easy-to-clean material surfaces. Cast stainless steel can prevent bacterial growth.
Design flexibility
Complex geometric shapes: The casting process can form complex structures (such as internal cavities and curved surfaces) in one piece, reducing welding or machining steps.
Customized dimensions: Non-standard parts (such as special interfaces, irregular-shaped brackets) can be directly cast through molds without the need for post-production modifications.
Reduce assembly costs: Integrated casting can replace multi-part assembly, lowering the failure rate and enhancing overall strength.
Cost-effectiveness
Small-batch economy: Compared with stamping or forging, casting is suitable for small-batch production and avoids high mold investment.
High material utilization rate: Precision casting (such as investment casting) reduces raw material waste, especially suitable for precious metals (such as 316L stainless steel).
Long-term durability: Stainless steel parts have a long service life, reducing replacement and maintenance costs.
Adapt to diversified production demands
Multi-industry adaptation: From micro precision parts (such as medical devices) to large industrial parts (such as valves and pump bodies), all can be customized.
Quality control and process advantages
Precision casting technology: Investment casting, silica sol process, etc. can achieve a high precision of ±0.1mm, meeting the requirements of high-demand fields such as aerospace.
Surface treatment optimization: After casting, the surface quality can be improved through processes such as polishing and sandblasting to meet the requirements of different scenarios.
The core value of custom stainless steel casting lies in optimizing performance and cost for specific requirements, making it particularly suitable for scenarios that require corrosion resistance, complex designs, or small-batch production. By flexibly choosing materials, processes and designs, the reliability and economy of the products can be significantly enhanced.
1Q: Is the price for small-batch customization high?
1A: Precision casting process is flexible, small-batch orders offer better cost performance ! No high mold costs are required, with a material utilization rate of over 90%, making it suitable for trial production or customized demands.
2Q: How long is the delivery cycle? Could it be expedited?
2A: 20-30 days for mass production (depending on complexity). We support expedited service, with dedicated customer service to track the progress throughout the process!
3Q: How to choose the right stainless steel material?
3A: Select materials based on the scene! For example:
304 stainless steel : General corrosion-resistant (food, construction);
316L stainless steel : Resistant to acid and alkali, medical-grade safety;
17-4PH: High strength, high-temperature resistance (aerospace).
Free material selection suggestions !
4Q: What are the differences between precision casting and CNC machining?
4A: Precision casting One-piece forming of complex structures (such as hollow, curved surfaces), lower cost; CNC is suitable for simple geometric parts, but it wastes a lot of materials. For complex parts, choose casting to save time and money!
5Q: How to ensure reliable quality?
5A: Triple quality inspection guarantee: Material Certification (ASTM standards)，Dimensional accuracy ±0.1mm ; Performance Testing ( salt spray test).
Consult now and get a customized plan for free!
Difference Between 304 SS Casting and 316SS Casting Parts
Chemical composition
The main components of 304 stainless steel include chromium (Cr) and nickel (Ni), with chromium content typically ranging from 18% to 20% and nickel content from 8% to 10.5%. 316 stainless steel adds 2%-3% molybdenum (Mo) to 304, which makes it more resistant to corrosion in certain environments .
Corrosion resistance
304 stainless steel has excellent corrosion resistance and can resist the corrosion of most oxidizing acids and alkalis. However, in environments containing chloride ions, such as seawater or certain chemicals, its resistance to corrosion may be affected, and rusting or corrosion may occur . In contrast, 316 stainless steel has significantly improved resistance to chloride corrosion due to the addition of molybdenum, and is particularly suitable for Marine environments or situations where exposure to corrosive chemicals is required .
Mechanical performance
304 stainless steel has good mechanical property and welding performance, can absorb a certain amount of mechanical stress, suitable for most of the welding process, including electric arc welding, TIG welding, MIG welding, etc. Meanwhile, 304 stainless steel performs well in cold working and can be formed into complex shapes through cold rolling, cold bending, stamping and other processes .316 stainless steel, while maintaining these basic properties, has improved heat resistance and high-temperature strength due to its higher nickel content and the addition of molybdenum, making it particularly suitable for manufacturing equipment in high-temperature environments .
Scope of application
304 stainless steel is widely used in food processing equipment, kitchenware, medical devices and other scenarios with high requirements for hygiene and cleanliness due to its superior corrosion resistance and good machinability. In addition, 304 stainless steel is often used in building curtain walls, railings and various decorative structures . 316 stainless steel, due to its stronger corrosion resistance and heat resistance, is widely used in Marine equipment, chemical industry, dye industry, paper industry and other places that require contact with corrosive chemicals or high temperature environment .
All of our products are custom made according to clients' drawings. Our work flow chart is as belows:
Material performance advantages
Corrosion resistance: Stainless steel (such as 304, 316, etc.) has strong corrosion resistance in humid, chemical or high-temperature environments and is suitable for industries such as chemical engineering, Marine equipment, and food processing.
High strength and heat resistance: Stainless steel can maintain structural stability at high temperatures and is suitable for scenarios such as engine components and industrial stoves.
Hygiene and safety: The medical and food industries have high requirements for smooth and easy-to-clean material surfaces. Cast stainless steel can prevent bacterial growth.
Design flexibility
Complex geometric shapes: The casting process can form complex structures (such as internal cavities and curved surfaces) in one piece, reducing welding or machining steps.
Customized dimensions: Non-standard parts (such as special interfaces, irregular-shaped brackets) can be directly cast through molds without the need for post-production modifications.
Reduce assembly costs: Integrated casting can replace multi-part assembly, lowering the failure rate and enhancing overall strength.
Cost-effectiveness
Small-batch economy: Compared with stamping or forging, casting is suitable for small-batch production and avoids high mold investment.
High material utilization rate: Precision casting (such as investment casting) reduces raw material waste, especially suitable for precious metals (such as 316L stainless steel).
Long-term durability: Stainless steel parts have a long service life, reducing replacement and maintenance costs.
Adapt to diversified production demands
Multi-industry adaptation: From micro precision parts (such as medical devices) to large industrial parts (such as valves and pump bodies), all can be customized.
Quality control and process advantages
Precision casting technology: Investment casting, silica sol process, etc. can achieve a high precision of ±0.1mm, meeting the requirements of high-demand fields such as aerospace.
Surface treatment optimization: After casting, the surface quality can be improved through processes such as polishing and sandblasting to meet the requirements of different scenarios.
The core value of custom stainless steel casting lies in optimizing performance and cost for specific requirements, making it particularly suitable for scenarios that require corrosion resistance, complex designs, or small-batch production. By flexibly choosing materials, processes and designs, the reliability and economy of the products can be significantly enhanced.
1Q: Is the price for small-batch customization high?
1A: Precision casting process is flexible, small-batch orders offer better cost performance ! No high mold costs are required, with a material utilization rate of over 90%, making it suitable for trial production or customized demands.
2Q: How long is the delivery cycle? Could it be expedited?
2A: 20-30 days for mass production (depending on complexity). We support expedited service, with dedicated customer service to track the progress throughout the process!
3Q: How to choose the right stainless steel material?
3A: Select materials based on the scene! For example:
304 stainless steel : General corrosion-resistant (food, construction);
316L stainless steel : Resistant to acid and alkali, medical-grade safety;
17-4PH: High strength, high-temperature resistance (aerospace).
Free material selection suggestions !
4Q: What are the differences between precision casting and CNC machining?
4A: Precision casting One-piece forming of complex structures (such as hollow, curved surfaces), lower cost; CNC is suitable for simple geometric parts, but it wastes a lot of materials. For complex parts, choose casting to save time and money!
5Q: How to ensure reliable quality?
5A: Triple quality inspection guarantee: Material Certification (ASTM standards)，Dimensional accuracy ±0.1mm ; Performance Testing ( salt spray test).
Consult now and get a customized plan for free!
