321 stainless steel plate and coil

Product Overview

321 stainless steel plate and coil are stabilized stainless steel products that offer excellent resistance to intergranular corrosion, making them ideal for high-temperature applications. Alloyed with titanium, 321 stainless steel maintains structural integrity and oxidation resistance even at elevated temperatures. We supply both plate and coil forms to accommodate various industrial, thermal, and structural uses, ensuring flexibility for cutting, forming, and fabrication.

Material Properties

• Excellent resistance to intergranular corrosion after welding
• Good oxidation resistance up to 900°C (1652°F)
• Enhanced creep strength and high-temperature stability
• Non-magnetic in annealed condition
• Good weldability and formability

Surface Finishing Options

Finish	Description	Typical Applications
2B	Smooth, cold-rolled surface	General industrial use
BA	Bright annealed	Pharmaceutical, food equipment
No.1	Hot rolled and annealed	Boilers, heat exchangers
No.4	Brushed satin	Decorative applications
8K	Mirror finish	Architectural facades, elevators
Hairline	Fine brushed finish	Interior decoration

Available Dimensions and Customization

Form	Thickness	Width	Length / Coil ID	Remarks
Plate	0.5mm - 100mm	1000mm / 1219mm / 1500mm / 2000mm	2000mm / 2438mm / 3000mm / 6000mm	Custom cuts available
Coil	0.3mm - 6mm	600mm - 1500mm	ID: 508mm / 610mm	Slitting and recoiling supported

Chemical Composition (Typical Values)

Element	Content (%)
C	≤ 0.08
Si	≤ 1.00
Mn	≤ 2.00
P	≤ 0.045
S	≤ 0.030
Cr	17.0 - 19.0
Ni	9.0 - 12.0
Ti	Stabilized: 5xC to 0.70

Mechanical Properties

Property	Typical Value
Tensile Strength	≥ 515 MPa
Yield Strength (0.2% offset)	≥ 205 MPa
Elongation	≥ 40%
Hardness (HRB)	≤ 95

Typical Applications

• Aircraft exhaust systems
• High-temperature chemical processing equipment
• Boiler and furnace parts
• Food and beverage heat equipment
• Automotive manifolds and expansion joints
• Architectural and structural components

Processing Services Available

• Laser, plasma, waterjet cutting
• Coil slitting and edge trimming
• Brushing, polishing, mirror finishing
• Bending, rolling, and welding
• Export-standard packaging and labeling

Why Choose Our Stainless Steel Plate and Coil

• Titanium-stabilized stainless steel with full material traceability
• Stock availability in both coils and plates
• Professional processing with tight tolerances
• Global shipping and fast response service

FAQs

Q: What is the main benefit of 321 over 304 stainless steel?

A: 321 stainless steel includes titanium, providing superior resistance to intergranular corrosion, especially after welding at high temperatures.

Q: Do you offer both plate and coil formats?

A: Yes, we supply 321 stainless steel in both plate and coil forms, suitable for different fabrication needs.

Q: What surface finishes are available for 321 coils?

A: We offer 2B, BA, No.4, mirror, and hairline finishes depending on thickness and application.

Q: Can I order custom lengths or slitted coils?

A: Absolutely. We provide custom slitting, shearing, and coil-to-sheet services to meet your specifications.

Q: How do you ensure safe packaging for international orders?

A: Products are securely packed using waterproof wrapping, steel bands, and reinforced pallets suitable for long-distance transport.