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High-quality stainless steel plates in UNS S32100, 1.4541, and SUS 321 specifications, featuring titanium stabilization for enhanced corrosion resistance and high-temperature performance.
Key Advantages: Exceptional quality appearance, superior wear resistance, strong corrosion resistance, decorative effects, durable construction, and aesthetically pleasing finish.
About 321 Stainless Steel
Titanium-bearing stainless steels are stabilized against carbide precipitation and designed for operation within the damaging temperature range where carbide precipitation develops. In Type 321 steel, carbon combines preferentially with titanium to form harmless titanium carbide, leaving chromium in solution to maintain full corrosion resistance. Type 321 is basic Type 304 modified by adding titanium in an amount at least 5 times the carbon plus nitrogen contents.
Chemical Composition - Grade 321
Element
Min
Max
C
-
0.08
Mn
-
2.00
Si
-
0.75
P
-
0.045
S
-
0.030
Cr
17.0
19.0
Ni
9.0
12.0
N
-
0.10
Other
Ti = 5(C+N) min, 0.70 max
Key Features of 321 Stainless Steel
Immune to intergranular corrosion when heated within carbide precipitation range
Titanium addition eliminates chromium carbide formation at grain boundaries
Superior high-temperature properties compared to 304 or 304L grades
Suitable for intermittent heating up to 1500°F, continuous service to 1650°F
Excellent weldability in field applications
Type 321H variant offers higher carbon content for improved high-temperature creep properties
Industrial Applications
Stainless steel 321 is utilized across numerous industrial applications including:
Aircraft exhaust manifolds
Expansion joints and bellows
Furnace components and heating element tubing
Heat exchangers
High-temperature mineral processing screens
Spiral welded tubes for burner pipes and flues
Technical Background
Grades 321 and 347 are austenitic 18/8 steels (similar to Grade 304) stabilized by titanium (321) or niobium (347) additions. These grades resist intergranular corrosion after heating within the carbide precipitation range of 425-850°C. Grade 321 is ideal for applications up to 900°C, combining high strength, scaling resistance, phase stability, and subsequent aqueous corrosion resistance.
Grade 321H provides higher carbon content for improved high-temperature strength. While 321 offers excellent forming and welding characteristics with outstanding toughness even at cryogenic temperatures, it doesn't polish well and isn't recommended for decorative applications.
Alternative Grade Comparison
Alternative Grade
Selection Criteria
304L
When requirement is for intergranular corrosion resistance without high-temperature strength needs
3CR12
For mild high-temperature environments up to approximately 600°C
304H
For mild high-temperature environments up to approximately 800°C
310
For operating temperatures up to 1100°C - exceeding 321 capabilities
S30815 (253MA)
For operating temperatures up to 1150°C - exceeding 321 capabilities
Product Images
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Business Type:
Manufacturer
Year Established:
2012
Total Annual:
500,000,000-800,000,000
Employee Number:
100~200
Ecer Certification:
Verified Supplier
Company Overview :
The company has an indoor warehouse of 5000 square meters and an open warehouse of 4000 square meters, which can fully meet the temporary turnover and phased storage of customers' steel pipe reservation.
The subordinate processing plant has 6 sets of medium frequency h... Company Overview :
The company has an indoor warehouse of 5000 square meters and an open warehouse of 4000 square meters, which can fully meet the temporary turnover and phased storage of customers' steel pipe reservation.
The subordinate processing plant has 6 sets of medium frequency h...