439 Stainless Steel Coil

439 stainless steel is a ferritic stainless steel with large amounts of chromium (approximately 18%) and low carbon content. This combination leads to its excellent corrosion resistance, especially in environments where chloride ions are present.


439 stainless steel coil excels in corrosion resistance. This stainless steel has a high chromium content, which prevents rust and corrosion in both wet and dry conditions. This makes it ideal for use in moisture or chemicals. In addition, 439 stainless steel also has good formability and weldability and can be easily molded into different forms or sizes without compromising on its structural integrity. This makes it versatile and suitable for different manufacturing processes. However, 439 stainless steel coil is vulnerable to corrosion in certain environments. Contact with chloride-containing substances, such as salt water or harsh cleaners, can cause pitting and rust on the surface of 439 stainless steel. 439 stainless steel coil does not have the same level of strength and durability as other types of stainless steel. Despite being a strong material, it may not perform well under heavy loads or stressful conditions.


Product Name439 Stainless Steel Coil
TypeSteel Coil
Length2000mm, 2440mm, 3000mm, 5800mm, 6000mm, etc.
StandardASTM, AISI, JIS, GB, DIN, EN, etc.
SurfaceBA, 2B, NO.1, NO.4, 4K, HL, 8K, etc.
Scope of ApplicationWidely used in high temperature and electrical industry, medical equipment construction, chemical, food industry, agriculture and ship parts, food and beverage packaging, Kitchen supplies, trains, airplanes, conveyor belts, vehicles, bolts, nuts, springs and screens, etc.
CertificateISO, SGS, BV, etc.
Production TechnologyHot Rolling, Cold Rolling
Edge ProcessingEdging, Trimming

Chemical Composition

C (Carbon)Si (Silicon)Mn (Manganese)Cr (Chromium)S (Sulfur)P (Phosphorus)
≤ 0.03≤ 1.0≤ 1.017.0~19.0≤ 0.03≤ 0.04

Mechanical Properties

Tensile Strength Kb (MPa)Yield Strength σ0.2 (MPa)Elongation D5 (%)Hardness
≥ 415≥ 205≥ 22≤ 89HRB

Physical Performance

Density (g/cm³)Modulus of Elasticity (GPa)Coefficient of Thermal Expansion (10^-6/°C)Coefficient of Thermal Conductivity (W/m*K)Resistivity (ΜΩ. cm)


We have complete testing equipment and strong technical force. The company has advanced production equipment, equipped with key equipment such as pressing machines, large heat treatment furnaces, beveling machines, sawing machines, large sandblasting machines, and various testing instruments.


Our products are processed by professional technicians, and each product is carefully screened before shipment. We′re pleased to get your Inquiry and we will come back to as soon as possible.


We provide products with competitive prices based on good quality and schedule each shipment on time. We′re pleased to get your Inquiry and we will come back to as soon as possible.


Our main manufactures are stainless steel, galvanized steel, carbon steel and etc. That apply to engineering, coal mine, textile, electric power, boiler, machinery, military industry and other fields.

Marine Exploration
Electric Field
Boiler Field
Textile Field
The issues you care about

Yes, we could provide the free samples on conditions it is available in stocks, however, the transportation fee is borne by buyer.

Each piece of products is manufactured by certified workshops, inspected piece by piece according to national QA/QC standard. We also could issue the warranty to customer to guarantee the quality.

We accept third-party inspections such as SGS, V-trust, TUV, DNV, etc.

Yes, we could make custom products according to your specific requirements.

Generally, we pack our goods in bundles or coils with rods or belts, we could also pack the goods as the customers’ requirement.

30% T/T in advance, the balance 70% before delivery. We will show you the photos of products and package before you pay the balance.


For stocks, we could transport the goods to loading port within 7 – 15 days after we received your deposit. For production period, it usually takes about 15 days-30 days after receiving the deposit.

Our company has the ability to supply large projects and offers excellent preferential policies for large orders.

You need to provide the grade, width, thickness, coating and the number of tons you need to purchase.

Under normal circumstances, we ship from Shenzhen, Shanghai, Tianjin, Qingdao, Ningbo ports, you can choose other ports according to your needs.

Of course, we welcome customers from all over the world to visit our factory. However, some of the plants are not open to the public.

In general, our online service time is Beijing time: 8:00-22:00, after 22:00, we will reply to your inquiry during the next working day.


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Delivery within agreed time


Shipping worldwide


Lifetime service