X6CrNiNb18-10
X6CrNiNb18-10 is a type of stainless steel that is also known as 1.4550. It is an austenitic stainless steel with high corrosion resistance and excellent mechanical properties. These are also known for its excellent resistance to high temperatures, oxidation, and corrosion. Other designation for this material includes:
- SUS347
- S34778
- UNS S34700
- Alloy 347
- 4450
Professional X6CrNiNb18-10 Stainless Steel Manufacturer in China – TuoLian
TuoLian offers X6CrNiNb18-10 which is a stabilized austenitic stainless steel. Meaning that it contains both chromium and nickel, as well as niobium. The niobium addition is what stabilizes the steel and makes it resistant to intergranular corrosion. The “X” in the name indicates that it is a high alloy steel, while “6” indicates that it contains at least 6% chromium.
As a professional manufacturer, we supply X6CrNiNb18-10 in different sizes, shapes, dimensions, treatments, and finishing. You can also request for customization based on your specific requirements. Whether you need X6CrNiNb18-10 for your business or fabrication projects, choose TuoLian as your supplier. Send us your inquiries today
X6CrNiNb18-10 Stainless Steel for a Variety of Applications
Our X6CrNiNb18-10 is a versatile austenitic stainless steel with several applications due to its excellent mechanical, thermal, and chemical properties. Here are some of its applications:
- Petrochemical and Chemical Industry
- Boiler tubes
- Heat exchanger tubes
- Radiant superheaters
- Exhaust systems
- Construction
- Power plant
- Power generation
- Plant Manufacturing
- Nuclear, and more

Chemical Composition
C (max.) | Si (max) | Mn (max.) | Ni (max.) | P (max.) | S (max.) | Cr (max.) | Nb (max.) |
0.08% | 1% | 2% | 9 to 12% | 0.045% | 0.015% | 17 to 19% | 1% |
Physical and Mechanical Properties
Tensile Strength
(Mpa) |
Yield Point
(Mpa) |
Hardness (HB) | Modulus Elasticity
(Gpa) |
Elongation
(%) |
Density
(kg/dm3) |
Thermal Capacity
|
Thermal Conductivity | Supersaturation
(⁰C) |
510 to 740 | ≥205 | ≤230 | 200 | ≥40 | 7.90 | 500 | 15 | 1020 to1100 |
Properties at a High Temperature
Properties | Temperature (⁰C) | |||||
100 | 200 | 300 | 400 | 500 | ||
Coefficient of Linear Expansion | 10-6∙K-1 | 16.0 | 16.5 | 17.0 | 17.5 | 18.0 |
Yield Point | Mpa | ≥175 | ≥155 | ≥136 | ≥125 | ≥119 |
Modulus Elasticity | Gpa | 194 | 186 | 179 | 172 | 165 |
Related Products
Different Characteristics
Our X6CrNiNb18-10 stainless steels are characterized by the following:
- High strength
- Heat resistance
- High ductility
- Weldability
- Easy to form
- Cold worked or hot worked
Extensive X6CrNiNb18-10 Selection We Provide
As a reliable manufacturer, we produce different X6CrNiNb18-10 types such as:
- Rolled bars
- Seamless tubes
- Forgings
- Cold-rolled sheets
- Burned sheet elements
- Hot-rolled sheets
Corrosion Resistance
The material’s corrosion resistance is mainly due to its high chromium and nickel content. X6CrNiNb18-10 also has excellent resistance to pitting and crevice corrosion, which are common forms of localized corrosion that occur in the presence of chlorides, halides, and other aggressive chemicals.