Choosing between 304 and 316 stainless steel can feel overwhelming, especially when durability, corrosion resistance, and budget all come into play. Both alloys are popular, but their differences matter for performance in specific environments. In this guide, we’ll break down the pros, cons, and ideal uses of each—and explain why EAGLE Stainless Steel offers certified solutions tailored to your needs.
304 vs 316 Stainless Steel: Key Differences
| Property | 304 Stainless Steel | 316 Stainless Steel |
|---|---|---|
| Composition | 18% Chromium, 8% Nickel | 16% Chromium, 10% Nickel, 2% Molybdenum |
| Corrosion Resistance | Good (resists rust in most environments) | Excellent (handles chlorides, acids, and saltwater) |
| Cost | Lower | 20–40% higher |
| Strength | Moderate | Slightly stronger |
| Common Applications | Appliances, roofing, interiors | Marine, chemical plants, medical equipment |
When to Choose 304 Stainless Steel
304 is the go-to alloy for everyday applications where extreme corrosion isn’t a concern:
Kitchen Equipment: Sinks, countertops, and cookware.
Architectural Trim: Handrails, decorative panels, and roofing.
Indoor Environments: HVAC systems, food processing (non-acidic).
Why EAGLE’s 304 Shines:
Cost-Effective: Ideal for budget-conscious projects.
Aesthetic Versatility: Polished, brushed, or matte finishes.
Certifications: Meets ASTM A240 and ISO 3506 standards.
When to Choose 316 Stainless Steel
316’s molybdenum content makes it the superior choice for harsh or corrosive environments:
Coastal Areas: Balcony railings, boat fittings, and seaside structures.
Chemical Processing: Tanks, pipelines, and valves exposed to acids.
Medical Devices: Surgical tools and implants (biocompatible grades).
Why EAGLE’s 316 Stands Out:
Saltwater Resistance: Survives Australia’s coastal humidity or Nordic winters.
Industrial Durability: Used in EAGLE’s marine-grade fasteners and offshore platforms.
Certifications: Complies with ASTM A276 and NACE MR0175 for sour service.
Cost Comparison: Is 316 Worth the Extra Money?
| Application | 304 Cost (per kg) | 316 Cost (per kg) | Justification for 316 |
|---|---|---|---|
| Outdoor Furniture | $5–$7 AUD | $7–$10 AUD | Not needed (304 suffices) |
| Boat Railings | $5–$7 AUD | $7–$10 AUD | Yes (salt corrosion) |
| Food Processing | $5–$7 AUD | $7–$10 AUD | Depends on chemicals used |
Rule of Thumb: Use 316 if your project faces:
Saltwater exposure (marine or coastal).
Acidic/chlorinated environments (pools, chemical plants).
High humidity with temperature swings.
EAGLE’s Stainless Steel Solutions
EAGLE delivers both 304 and 316 alloys with precision engineering and third-party testing:
1. Custom Fabrication
Laser Cutting & Welding: Tailored sheets, pipes, and fittings for architectural or industrial use.
Surface Treatments: Passivation or electropolishing to enhance corrosion resistance.
2. Project-Specific Guidance
Free Consultation: EAGLE’s engineers help you choose between 304 and 316 based on your environment.
Case Study: A Brisbane marina used EAGLE’s 316 bolts and brackets to avoid rust in salt spray—saving 30% on maintenance costs.
3. Sustainability
Recyclable: Both alloys are 100% recyclable, aligning with eco-friendly construction.
Common Mistakes to Avoid
1.Using 304 in Coastal Areas: Leads to pitting corrosion within months.
2.Overpaying for 316 Indoors: Unnecessary cost for dry, climate-controlled spaces.
3.Ignoring Finish Quality: Poor surface treatment undermines corrosion resistance.
Final Verdict
Choose 304 stainless steel for cost-effective, everyday use in mild environments. Opt for 316 when battling saltwater, acids, or extreme humidity.
Why Trust EAGLE?
Local Stock: Fast delivery across Australia.
Quality Assurance: Batch testing and mill certificates with every order.
Competitive Pricing: 316 alloys priced 15% below competitors without compromising quality.
Ready to Select the Right Stainless Steel?
Explore EAGLE’s 304 and 316 range today, or contact their team for personalized advice.