304 vs 316 Stainless Steel Screws Differences

304 vs 316 Stainless Steel Screws Differences

304 and 316 stainless steel are the two most common materials used in screw manufacturing, with significant differences in composition, performance, and price.

1. Material Composition Comparison

Element	304 Stainless	316 Stainless
Carbon (C)	≤0.08%	≤0.08%
Chromium (Cr)	18-20%	16-18%
Nickel (Ni)	8-10.5%	10-14%
Molybdenum (Mo)	None	2-3%

316 stainless steel contains 2-3% molybdenum, which is key to its superior corrosion resistance.

2. Corrosion Resistance

• 304: Resists general corrosion, suitable for indoor and dry environments
• 316: Resists chloride corrosion, suitable for marine environments, chemical equipment, medical devices

3. Applications

• 304 screws: Furniture, decoration, food processing equipment, indoor construction
• 316 screws: Ships, offshore platforms, chemical equipment, medical devices, coastal buildings

4. Price Difference

316 stainless steel screws cost 30-50% more than 304, mainly due to higher nickel and molybdenum content.

5. Selection Guidelines

1. Indoor dry environments: Choose 304 for cost-effectiveness
2. Coastal or high-salt environments: Must choose 316
3. Chemical or medical equipment: Prefer 316
4. Cost-sensitive projects: 304 is economical

zhuhai jiali hardware provides 304 and 316 stainless steel screws, welcome to consult.