ASTM A479 321 Stainless Steel Round Bar
Diameter: 3mm – 300mm
Length: 1000mm – 6000mm (Custom sizes available)
Form: Round Bar, Hex Bar, Square Bar, Flat Bar
Surface Finish: Black, Peeled, Turned, Polished, Centerless Ground
Condition: Annealed, Hot Finished, Cold Finished
Certification: Mill Test Certificates (MTC 3.1/3.2) with full traceability
Test: UT, SGS testing, TUV etc
Production Capacity: 10000 Ton/Month
ASTM A479 321 Stainless Steel Round Bar a titanium-stabilized austenitic chromium-nickel stainless steel designed to resist chromium carbide precipitation during welding and high-temperature exposure. This stabilization provides exceptional resistance to intergranular corrosion, making it an ideal choice for applications involving intermittent heating between 800°F and 1500°F (427°C to 816°C). Our 321 bars deliver excellent strength, corrosion resistance, and fabricability, ensuring long-term performance in demanding environments.
Specifications
|
Parameter |
Details |
|
Diameter |
3mm – 300mm |
|
Length |
1000mm – 6000mm (Custom sizes available) |
|
Form |
Round Bar, Hex Bar, Square Bar, Flat Bar |
|
Surface Finish |
Black, Peeled, Turned, Polished, Centerless Ground |
|
Standard |
ASTM A276, ASTM A479, EN 10088-3, DIN 1.4541 |
|
Condition |
Annealed, Hot Finished, Cold Finished |
Chemical Composition
|
Element |
Content (%) |
|
C |
≤ 0.08 |
|
Si |
≤ 0.75 |
|
Mn |
≤ 2.00 |
|
P |
≤ 0.045 |
|
S |
≤ 0.030 |
|
Cr |
17.00 – 19.00 |
|
Ni |
9.00 – 12.00 |
|
Ti |
≥ 5×C% |
|
Fe |
Balance |
Mechanical Properties (Annealed Condition)
|
Property |
Value |
|
Tensile Strength |
≥ 515 MPa |
|
Yield Strength |
≥ 205 MPa |
|
Elongation |
≥ 40% |
|
Hardness (Brinell) |
≤ 201 HB |
|
Modulus of Elasticity |
193 GPa |
Equivalent Grades
|
Standard |
Grade |
|
UNS |
S32100 |
|
DIN |
1.4541 |
|
EN |
X6CrNiTi18-10 |
|
JIS |
SUS321 |
Application Areas
Aerospace
Jet engine components, exhaust systems, afterburner parts
Chemical Processing
Heat exchangers, reactors, pressure vessels, piping
Power Generation
Boiler tubes, superheater parts, condenser components
Automotive
Exhaust systems, catalytic converter housings
Food & Pharmaceutical
Processing equipment requiring high cleanliness and corrosion resistance
Architecture
Structural components in high-temperature environments
Why Choose Baohui Steel?
Full Material Traceability
We provide ASTM A479 321 Stainless Steel Round Bar Material Test Certification (MTC EN 10204 3.2) with every shipment, ensuring full compliance with international standards.
Rigorous Quality Control
Each batch undergoes chemical analysis, mechanical testing, and non-destructive testing to ensure internal and external quality.
Third-Party Validation Available
Optional SGS, TÜV, and ultrasonic testing (UT) reports available for additional quality assurance.
Global Client Trust
Trusted by 1,000+ clients across aerospace, chemical, and energy sectors in the USA, Germany, UK, India, Japan, and more.
High Repeat Order Rate
85% of customers return for consistent quality and reliable supply chain performance.
Custom Processing Capability
We provide cutting, machining, surface finishing, and heat treatment services per customer requirements.
Global Project Supply Record of ASTM A479 321 Stainless Steel Round Bar
|
Project |
Country |
Application |
|
Chemical Reactor Manufacturing |
Germany |
Heat exchanger tubing |
|
Power Plant Expansion |
USA |
Boiler and superheater parts |
|
Aerospace Engine Components |
France |
Exhaust system assemblies |
|
Automotive Exhaust Systems |
Japan |
Catalytic converter housings |
|
Pharmaceutical Processing Equipment |
Switzerland |
Reaction vessels |
FAQ
Q: What is the maximum service temperature for 321 stainless steel?
A: 321 is suitable for continuous service up to 816°C (1500°F) and intermittent service up to 927°C (1700°F).
Q: How does 321 compare to 304 stainless steel?
A: 321 offers superior resistance to intergranular corrosion and better high-temperature performance due to titanium stabilization.
Q: Can 321 stainless steel be welded?
A: Yes, 321 exhibits excellent weldability without the need for post-weld annealing in most applications.
Q: Do you provide certified material test reports?
A: Yes, we provide full MTC 3.2 certification with chemical and mechanical test results.
Request a Quote – Contact Us Today!
Experience the quality and reliability of ASTM A479 321 Stainless Steel Round Barr-trusted by industry leaders worldwide.
WhatsApp: 8613468954786
Email:baohui@bhsteelpipe.com
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