SUS201 vs SUS304: Cost and Performance Comparison

SUS201 (201 Stainless Steel)

Cost: Lower, as manganese/nitrogen substitutes for more expensive nickel.

Performance: Higher yield strength and hardness, good work hardening, but less corrosion resistant than 304.

Appearance: Can have a darker surface due to manganese.

Best For: Budget-friendly projects, indoor use, utensils, architectural trim where extreme corrosion isn't a concern.

SUS304 (304 Stainless Steel)

Cost: Higher due to significant nickel and chromium content.

Performance: Excellent corrosion resistance, better toughness, more durable, and easier to form complex shapes.

Appearance: Brighter, whiter finish.

Best For: Outdoor applications, marine environments, food processing, medical devices, and general-purpose high-performance needs.

Key Differences Summarized

Corrosion: 304 > 201.

Strength/Hardness: 201 > 304 (though 304 is tougher).

Cost: 201 < 304.

Application: 201 for economy; 304 for high performance/resistance.