321 Stainless Steel Foil
321 Stainless Steel Foil Quick Details
321 stainless steel foil is a Ni-Cr-Mo austenitic stainless steel foil, its performance is very similar to 304 stainless steel foil.
But due to the addition of alloy titanium content, it has better resistance to grain boundary corrosion and high temperature strength. It effectively controls the formation of chromium carbide.
321 austenitic stainless steel foil has good corrosion resistance in the atmosphere and is widely used in petrochemical, electric power, bridge and automobile industries.
321 Stainless Steel Foil Specifications
| Product Name | 321 Stainless Steel Foil |
| Grades | 321/EN 1.4541 |
| Hardness | 170HV-430HV or as customers’ requests |
| Thickness | 0.02mm-0.1mm |
| Width | 1.0mm-650mm |
| Edge | Slit/Mill |
| Quantity Tolerance | ±10% |
| Paper Core Internal Diameter | Ø500mm paper core, special internal diameter core and without paper core on customer request |
| Surface Finish | NO.1/2B/2D/BA/HL/Brushed/6K/8K Mirror,etc |
| Packaging | Wooden Pallet/Wooden Case |
| Payment Terms | 30% TT deposit and 70% balance before shipment, 100% LC at sight |
| Delivery Time | 5-7 working days |
| MOQ | 100Kgs |
| Shipping Port | Shanghai/Ningbo port |
| Sample | The sample is available |
321 Stainless Steel Foil Chemical Compositions
The chemical components of grade 321 stainless steel foil is summarized in the following table:
| Grade | Standard | C | Si | Mn | P | S | Cr | Ni | Mo |
| 321 | ASTM A240 | ≤0.08 | ≤1.00 | ≤2.00 | ≤0.045 | ≤0.030 | 17.00-19.00 | 9.00-12.00 | – |
321 Stainless Steel Foil Mechanical Properties
| Grade | Tensile Strength (MPa) min | Yield Strength 0.2% Proof (MPa) min | Elongation (% in 50mm) min | Hardness | |
| Rockwell B (HR B) max | Brinell (HB) max | ||||
| 321 | 520 | 205 | 40 | – | – |
How About 321 Stainless Steel Foil Production Process?
- Cold rolling of thin stainless steel strip coils: The cold rolling of stainless steel is to further reduce the thickness of the hot rolled steel sheet and make it into a thin strip foil. It is divided into continuous cold rolling and batch cold rolling.
- Annealing of ultra thin stainless steel foils: After cold rolling, the thin strip needs annealing to restore the mechanical properties lost during cold rolling.
- Slitting of ultra thin stainless steel foils: The annealed stainless steel strip is slitted according to requirements, and the width of the thin strip is determined by customer requirements.
- Packing and shipping of thin ultra thin stainless steel foils: After the slitting, the thin strips are packed in wooden cases to prevent damage during transportation and storage.
321 Stainless Steel Foil: The Ultimate Guide
When you choose to buy quality 321 stainless steel foil, there have some important points we need to know before we get started.
What are 321 stainless steel foils?
321 stainless steel foil is a Ni-Cr-Mo austenitic stainless steel foil, its performance is very similar to 304 stainless steel foil.
But due to the addition of alloy titanium content, it has better resistance to grain boundary corrosion and high temperature strength. It effectively controls the formation of chromium carbide.
321 austenitic stainless steel foil has good corrosion resistance in the atmosphere and is widely used in petrochemical, electric power, bridge and automobile industries.
321 stainless steel foil application
1. Petroleum waste gas combustion pipeline
2. Engine exhaust pipe
3. Boiler shell, heat exchanger, heating furnace parts
4. Silencer parts for diesel engines
5. Boiler pressure vessel
6. Chemical transport truck
7. Expansion joint
8. Spiral welded pipes for furnace and dryers
How to buy 321 stainless steel foil from China?
Therefore, if you want to buy 321 foil at lower price with high quality and good service from China suppliers, you need to know how to buy stainless steel strips coils from China firstly.
First of all, you should choose a reliable supplier who can provide good quality 321 stainless steel coils products at competitive prices. Then you can negotiate with them on price and other terms until reaching an agreement.
Secondly, you need to check whether they have advanced production equipment or not because if they do not have advanced equipment for producing various kinds of coils including stainless steel coils or if their production capacity is limited then it would be difficult for them to supply high quality products at competitive prices all year round.
Thirdly, it is better to visit their factory by yourself and check the production line and warehouse by yourself. It will be great if you can check their production process and production equipment. Because it is very important for you to know how they control the quality from process till delivery.
What is the standard sea packaging of 321 stainless steel foil?
- Standard export sea packaging:
Waterproof Paper Winding+PVC Film+Strap Banding+Wooden Pallet or Wooden Case; - Customized packaging as your request (Logo or other contents accepted to be printed on the packaging);
- Other special packaging will be designed as customer’s request;
Eye to wall and eye to sky are both available; - By International Express: DHL/UPS/FEDEX/EMS and our own express line;
- By air or By sea;
- Shipping port: Shanghai, Ningbo or as your request.
