Key Feature

Economical Austenitic Grade. Lower-cost alternative to 304 with good strength and formability.

Primary selling point is cost savings where full 304 performance is not required.

Common Designations

UNS S20100, AISI 201, EN 1.4372, SUS 201, 12Cr17Mn6Ni5N

EN 1.4372 is a common European counterpart. Note: "AISI 201" is a generic term; exact compositions vary.

Chemical Composition (Typical wt.%)

C: ≤ 0.15

Higher carbon than 304, affecting weldability.

Cr: 16.0 - 18.0

Provides basic corrosion resistance.

Ni: 3.5 - 5.5

Lower nickel content (key cost reducer).

Mn: 5.5 - 7.5

High manganese partially replaces nickel to maintain austenite.

N: ≤ 0.25

Added nitrogen strengthens and stabilizes austenite.

Mechanical Properties (Annealed)

Tensile Strength (Rm): ≥ 655 MPa

Higher strength than annealed 304 (a key advantage).

Yield Strength (Rp0.2): ≥ 310 MPa

Significantly higher yield strength than 304.

Elongation (A): ≥ 40%

Maintains good ductility despite higher strength.

Physical Properties

Density: ~7.80 g/cm³

Slightly lower than 304.

Melting Range: ~1399 - 1420 °C

Key Standards

ASTM A240/A240M (includes Grade 201)

Must be explicitly specified.

EN 10088-2 (for grade 1.4372)

Common Applications

• Decorative & Architectural: Indoor trims, handrails, wall panels, elevator interiors.
• Household Goods: Cookware, sinks, flatware, appliance trim.
• General Hardware: Storage racks, fasteners, tubing for non-critical uses.
• Automotive Trim: Non-structural decorative parts.

Applications where appearance, cost, and moderate corrosion r