What is Stainless Steel Z6 CNT 18-10 equivalent material?
May 06, 2026
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What is Stainless Steel Z6 CNT 18-10 material?
Stainless steel Z6 CNT 18-10 (also known as AISI 321 or 1.4541) is a titanium-stabilized austenitic stainless steel specifically designed to prevent intergranular corrosion at high temperatures. It can be fabricated into various practical product forms including plates, coils, and tubes,and is frequently utilized in applications such as pressure vessels, chemical piping systems, exhaust systems, and heat exchangers.
What is Stainless Steel Z6 CNT 18-10 equivalent material?
Z6 CNT 18-10 stainless steel is a French AFNOR (NF) standard grade, equivalent to titanium-stabilized AISI 321 (UNS S32100) or European Werkstoff No. 1.4541 (X6CrNiTi18-10). It is an austenitic stainless steel, and due to its excellent resistance to intergranular corrosion, it is often used in high-temperature environments and welded components (up to 800°C).
| AFNOR (France) | AISI/ASTM (USA) | EN/DIN (Europe) | JIS (Japan) | GB (China) |
| Z6 CNT 18-10 | 321 | 1.4541 (X6CrNiTi18-10) | SUS321 | 06Cr18Ni11Ti |
Stainless Steel Z6 CNT 18-10 Chemical Composition
| Grade | C (max) | Mn (max) | Si (max) | P (max) | S (max) | Cr | Ni | Ti |
| Z6 CNT 18-10 | 0.08 | 2.00 | 1.00 | 0.045 | 0.030 | 17.0 - 19.0 | 9.0 - 12.0 |
5×C≤Ti≤0.70 |
Stainless Steel Z6 CNT 18-10 Mechanical Properties
| Property | Value (at Room Temp) |
| Tensile Strength (Rm) | 515 - 700 MPa |
| Yield Strength (Rp0.2) | ≥ 205 MPa |
| Elongation (A%) | ≥ 40% |
| Hardness (Brinell HB) | ≤ 201 |
| Hardness (Rockwell B) | ≤ 95 |
Stainless Steel Z6 CNT 18-10 Physical Properties
| Property | Value |
| Density | 7.92 g/cm3 |
| Melting Point | 1400 - 1427 °C |
| Specific Heat | 500 J/kg⋅K (at 0-100°C) |
| Thermal Conductivity | 16.1 W/m⋅K(at 100°C) |
| Electrical Resistivity | 0.72 Ω⋅mm2/m |
What is the maximum service temperature for Z6 CNT 18-10?
This grade is specifically designed for high-temperature service. It remains stable and oxidation-resistant in temperatures ranging from 400°C to 815°C (750°F to 1500°F), where standard 304 steel would suffer from carbide precipitation.
Is Z6 CNT 18-10 magnetic?
No. Like most austenitic stainless steels, Z6 CNT 18-10 is non-magnetic in the annealed condition. However, it may become slightly magnetic after cold working or welding.
Is Z6 CNT 18-10 easy to weld?
Yes, Z6 CNT 18-10 (also known as 1.4541 or AISI 321) is considered to have excellent weldability. It is a titanium-stabilized austenitic stainless steel, similar to 304, but specially designed to resist intergranular corrosion and withstand high temperatures.
Stainless Steel Z6 CNT 18-10 Applications
Heat exchanger tubes
Exhaust systems: Widely used in automotive exhaust manifolds and aircraft exhaust pipes.
Industrial furnaces and boilers: Used for furnace components, heating elements, and expansion joints.
Expansion bellows: Expansion joints and bellows suitable for operation in high-temperature environments.
Oil refining equipment: Components used to withstand high temperatures and corrosive gases.
Chemical equipment: Tanks, pipelines, and reactors used to process high-temperature corrosive substances.
Stainless Steel Z6 CNT 18-10 Supplier
Looking for steel plates that can withstand temperatures up to 800°C? Our Z6 CNT 18-10 (AISI 321 / 1.4541 / SUS321) stainless steel plates are the ideal heat-resistant solution. We also offer bending, punching (for perforated plates), and rolling (for tank bodies), packaged in steel frames or fumigated wooden pallets with waterproof paper and edge protection to ensure zero damage during intercontinental transport.
| Product Form | Thickness | Width | Length | Standards |
| 321 Cold Rolled Sheet | 0.3mm - 6.0mm | 1000 / 1219 / 1500mm | 2000 / 2438 / 3000 / 6000mm | ASTM A240, EN 10088-2 |
| 321 Hot Rolled Plate | 3.0mm - 100mm | 1500 / 1800 / 2000 / 2500mm | 6000 / 8000 / 12000mm | ASTM A240, AFNOR NF A35-573 |
| 321 Steel Coil / Strip | 0.3mm - 12.0mm | 10mm - 2000mm | Coils (Custom Weight) | ASTM A240, EN 10088-2 |
| SS 321 Checkered Plate | 3.0mm - 10.0mm | 1000 / 1219 / 1500mm | Per Customer Request | Tear Drop, Diamond Pattern |
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Will GNEE provide a Material Certificate (MTC) for the Z6 CNT 18-10 order?
Yes. Every shipment from GNEE includes a Material Certificate (MTC) conforming to EN 10204 3.1, verifying the chemical composition (including titanium content) and mechanical properties.

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