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439 STAINLESS STEEL TUBE

439 stainless steel tube

439 stainless steel tube, also known as 1.4510, is a ferritic alloy with 17-19% chromium, offering better corrosion resistance than many ferritic types. Titanium content stabilizes the alloy, enhancing intergranular corrosion resistance and weldability, preventing chromium carbide formation. It's particularly suited for high-temperature applications like automotive exhaust systems due to its oxidation resistance. 439 stainless steel also provides various finishes for aesthetic versatility and maintains a clean surface, making it ideal for kitchen appliances and other hygiene-sensitive settings.

Standards and Specifications

STANDARDS
OD
WT
STANDARDS
OD
WT
mm
inch
mm
ga
ASTM A554
8-323
0.315"-12 3/4"
0.6-6.0
24ga-4ga
ASTM 249/269
15.88-203.2
0.6252"-8"
0.6-3.0
24ga-11ga
ASTM A270
15.88-203.2
0.6252"-8"
1.0-3.0
20ga-11ga
EN 10296-2
8-323
0.315"-12 3/4"
0.6-6.0
24ga-4ga
EN 10217-7
12-323
0.4724"-12 3/4"
0.6-6.0
24ga-4ga
EN 10357
13-204
0.5118"-8"
1.0-3.0
20ga-11ga

CHEMICAL COMPOSITION &
MECHANICAL PROPERTIES

CHEMICAL COMPOSITION AND MECHANICAL PROPERTIES

Typical Chemical Composition % (max values, unless noted)
Grade
C
Mn
P
S
Si
Ni
Cr
Mo
439
0.03
1.0
0.04
0.03
1.00
0.5 max
17.0-19.0
Typical Mechanical Properties
Grade
Tensile Strength
Yield Strength
Elongation in 2 in. or (50mm)
Brinell Hardness
Rockwell Hardness
min
min
min
max
max
ksi
Mpa
ksi
Mpa
%
439
60
414
35
241
20
190
90

Area we serve

KITCHEN EQUIPMENT
About kitchen equipment, 439 stainless steel tube is highly sought after for its excellent corrosion resistance, ease of maintenance, and aesthetic appeal. Particularly valued for its durability in kitchen environments—marked by constant exposure to water, acidic substances, and variable temperatures—it is extensively used in making high-grade commercial kitchen appliances and structures. These include refrigerated displays, ovens, and ventilation hoods, where long-term durability and hygiene are paramount. Its resistance to oxidation at high temperatures makes it ideal for heating and heat exchange components. Furthermore, the aesthetic flexibility of 439 enables its use in visible parts of kitchen equipment, such as handles, decorative trims, and panels, maintaining a polished appearance that meets strict food preparation hygiene standards.
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HOUSEHOLD APPLIANCES
439 stainless steel tube is crucial in household appliance manufacturing, prized for its superior corrosion resistance, durability, and ability to maintain an aesthetic appearance. It is especially suitable for parts in direct contact with water, demanding extended durability, and high hygienic standards. Key applications include heat exchangers in refrigerators, structural components in washing machines and dishwashers, and exhaust systems in clothes dryers—each benefiting from the material's resistance to refrigerants, cleaning agents, high temperatures, and moisture. Its aesthetic appeal enables its use in visible appliance components, such as facades or trims, providing a contemporary look. The widespread use of 439 in household appliances highlights its ability to meet the rigorous demands of home settings.
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FURNITURE
The incorporation of 439 stainless steel tube within the furniture is a testament to its superior structural integrity, exceptional resistance to corrosion, and refined aesthetic qualities. This alloy is strategically selected for the construction of furniture where a harmonious balance between strength and design is paramount. In structural frameworks, 439 stainless steel tube provides sturdy supports for tables, chairs, and sofas, sustaining heavy loads without compromising stability or appearance. For outdoor settings, its durability makes it perfect for garden and patio furniture, withstanding moisture and temperature changes. The alloy's polished finish also lends a sleek, modern look to decorative elements and fixtures, enhancing furniture with a touch of sophistication.
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ARCHITECTURAL DECORATION
439 stainless steel tube is valued in architectural design for its strength, corrosion resistance, and modern look. It is widely used for both decorative and structural purposes. For handrails and balustrades, it is the material of choice, offering lasting structural integrity and enduring appearance for staircases and balconies. Its resilience is ideal for high-use and outdoor areas. As a support element, 439 is perfect for visible supports like columns and beams, enhancing a building's stability and aesthetic appeal. In exterior facades, it provides decorative durability, withstanding various weather conditions to maintain the facade's integrity and look. For finishing touches, its polished appearance is favored for accentuating details such as window trims and door hardware, contributing to a building's sleek.
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CONSTRUCTION MATERIAL
In the realm of construction, 439 stainless steel tube is esteemed for its exceptional blend of durability, corrosion resistance, and aesthetic flexibility, making it an indispensable material in a diverse range of applications. Structural Support: Leveraged for its superior strength and resilience to corrosion, this material is integral to the construction of foundational supports and structural beams, ensuring enhanced longevity and structural integrity. Safety Installations: The material's robustness and durability are critical for the construction of handrails, guardrails, and balustrades, offering secure, durable solutions for safety and accessibility in both indoor and outdoor environments.
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AUTOMOTIVE INDUSTRY
Within the automotive sector, 439 stainless steel tube is esteemed for its superior corrosion resistance, thermal stability, and mechanical strength. This material finds application across a broad spectrum of automotive components, underscoring its versatility and value in enhancing vehicle functionality and durability: Exhaust systems, for its ability to withstand high temperatures and resist oxidation, ensuring long-lasting performance. Fuel lines, due to its resistance to various corrosive substances, reducing leak risks and preserving the fuel system's integrity. Structural components, where its durability contributes to vehicle safety and structural rigidity.
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439 stainless steel tube FAQ

439 stainless steel tube offers better corrosion resistance than 430 due to its higher chromium content, attributed to the presence of titanium. It is also slightly more magnetic owing to a marginally higher nickel content. Both 439 and 430 share comparable heat resistance, enduring temperatures up to 815°C (1500°F). However, 439 is less hard than 430 due to its lower carbon content. In terms of cost, 439 is significantly more expensive, primarily because of its increased chromium content.
Like other 400 grade stainless steel, 439 is magnetic because of its iron content. And it is relatively high magnetic in the 400-series stainless steel.
439 has good high-temperature properties, with oxidation resistance up to about 1500°F (816°C). It is suitable for many applications that do not involve high-corrosive environments.
439 stainless steel tube can be readily formed and machined. It has a lower overall work hardening rate than austenitic stainless steels, making it easier to form with less power required.
It is EN 1.4510.
439 stainless steel tube is a ferritic alloy with low nickel (max 0.5%) and higher chromium (17-19%) levels, plus stabilizers like titanium to enhance weldability and formability. In contrast, 304 is an austenitic stainless steel with higher nickel (8-11%) and chromium (18-20%) content, ensuring excellent corrosion resistance and a non-magnetic state when annealed. Although 439 has good corrosion resistance and excels in pitting and crevice corrosion resistance in some environments, it's generally less corrosion-resistant than 304 due to lower nickel content. 304's corrosion resistance is superior, especially against acidic substances, making it a preferred material in the food industry. The choice between 439 and 304 depends on specific environmental demands, required performance, and budget.
439 is a low-nickel (max 0.5%) ferritic alloy with 17-19% chromium, often with added titanium or niobium for better weldability and formability. In contrast, 316L is an austenitic alloy with 10-15% nickel, 16-18% chromium, and 2-3% molybdenum, which greatly boosts its corrosion resistance, particularly against chlorides and industrial solvents. While 439 has good oxidation resistance suitable for exhaust systems and high-temperature applications, 316L excels in combating pitting and crevice corrosion in chloride and acidic environments. Cost-wise, 439 is more economical with a high-quality finish but lower corrosion resistance than 316L, which 316L is pricier but offers superior durability in harsh conditions. The choice between them depends on the environmental demands, performance needs, and budget of the project.
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