439 Stainless Steel Bar

439 stainless steel is a ferritic stainless steel with high amounts of chromium and low carbon content. This gives it excellent corrosion resistance, especially in environments where chloride ions exist.

  • email: sale@cnbaosteel.com
  • Phone Number : +86 13016194956
  • Wechat id: +86 13016194956


439 stainless steel bars have a high chromium content that can prevent rust and corrosion in both wet and dry conditions. This makes them an ideal option in environments where moisture or chemicals exist. In addition, Good formability and weldability means they can be easily molded into different forms or sizes without sacrificing the structural integrity. This makes them applicable for a variety of manufacturing processes. However, 439 stainless steel bars are prone to corrosion in certain environments. Contact with substances containing chloride, such as salt water or harsh cleaners, can cause pitting and rust on the surface. For another, 439 stainless steel bars may not have the same level of strength and durability as other stainless steel bars. Although it is still a strong material, it may not perform well under heavy loads or stressful conditions.


Product Name439 Stainless Steel Bar
Product TypeSteel Bar
Outer Diameter 1Round Bar4mm-500mm
Outer Diameter 2Hexagon Bar18mm-57mm (11/16″ to 2-3/4″)
Outer Diameter 3Square Bar18mm-47mm (11/16″ to 1-3/4″)
Outer Diameter 4Flat Steel1/2 “to 10”, Thickness: 2mm-150mm, Can provide customized
Length1-6 meters, Length can be customized
StandardASTM, AISI, JIS, GB, DIN, EN, etc.
SurfaceBlack, Bright Polished, Rough Turning, Mattness Surface Treatment, No. 4. BA, etc.
Scope of ApplicationStainless steel bars are used in a variety of industries such as shipbuilding,
Defense, Automotive, Textiles, Paper and pulp, Manufacturing, Cement,
Heavy earthmoving equipment and construction, etc.
Sample Time3 Days
Delivery Time15-30 Days
PaymentT/T& L/C
Transport PackageWaterproof and Rust-Proof Seaworthy Packaged Goods
Production Capacity25000 Tons/Month
≤ 0.03≤1.0≤1.017.0~19.0≤ 0.03≤ 0.04
Chemical Composition

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

Density(g/cm³)Dmodulus of Elasticity(Gpa)Coefficient of Thermal Expansion(10-6/°C)Coefficent of Yhermal Conductivity(W/m*K)Resistivity(ΜΩ. cm)
Physical Performance


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


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Lifetime service