321 Stainless Steel Foil
Product Description
321 stainless steel foil is a titanium-stabilized austenitic stainless steel (18Cr-10Ni-Ti), which is made into ultra-thin metal foil (thickness 0.01-1.0mm) through cold rolling process. The addition of titanium significantly improves its resistance to intergranular corrosion and high-temperature stability, which is especially suitable for scenes that need to be exposed to high temperature environment for a long time after welding.
321 high-temperature stainless steel foil has a maximum temperature resistance of 850℃ (continuous operation) and a short-term peak of 1000℃, which is better than 304 stainless steel.
Intergranular corrosion resistant 321 foil
321 stainless steel foil specifications
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Specification Range |
International Certifications / Notes |
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Material |
321 (Ti-stabilized), 321H (high-carbon) |
ASTM A240 / EN 1.4541 / JIS G4303 |
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Thickness |
0.01mm–1.0mm (±0.005mm tolerance) |
0.01mm ultra-thin foil available with pre-plated reinforcement |
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Width |
10mm–1,500mm (slitting accuracy ±0.1mm) |
Custom widths up to 2,000mm with special tooling |
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Surface Finish |
2B, BA, No.4 brushed, passivated |
Medical-grade mirror finish (Ra ≤0.05μm) optional |
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Mechanical Properties |
Tensile ≥520 MPa, Elongation ≥40% (321H: Tensile ≥550 MPa) |
Cold-rolled for high strength and ductility |
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Coil Specifications |
Standard weight: 100kg–2,000kg, slit to 1kg mini-coils |
Custom sheet sizes (e.g., 1,000×2,000mm) available |
Reasons To Choose GNEE
GNEE supplies 321 stainless steel foil with a thickness tolerance of ±0.005mm, supports ultra-thin foil (0.01mm-0.1mm), and complies with ASTM A240 and EN 1.4541 standards. Provide SGS and ISO certification to ensure stable and reliable product performance. From raw materials to finished products, multiple processes such as ultrasonic flaw detection and hardness testing are used for testing.
321 Stainless Steel Foil Supplier
High temperature resistant 321 foil packaging
FAQ
Q: What is the welding performance of 321 foil?
A: No heat treatment is required after welding to maintain corrosion resistance. ER321 welding wire is recommended, which is suitable for complex welding structures.
Q: Does 321 foil meet food contact standards?
A: Yes, it has passed FDA/EU 10/2011 certification, has no heavy metal migration, and can directly contact food.
Q: How environmentally friendly is 321 foil?
A: It can be reused 50+ times, reducing aluminum foil waste; the material is recyclable, which is in line with the trend of green production.
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