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SS 321, SUS 321, Inox 321, DIN 1.4541, UNS S32100, AISI 321, SAE 321 Sheet
Our Services
Laser cutting, Fire cutting, bending, Surface polishing, PVC film cover
Grade Overview
Grades 321 and 347 are the basic austenitic 18/8 steel (Grade 304) stabilized by Titanium (321) or Niobium (347) additions. These grades are used because they are not sensitive to intergranular corrosion after heating within the carbide precipitation range of 425-850°C. Grade 321 is the grade of choice for applications in the temperature range of up to about 900°C, combining high strength, resistance to scaling and phase stability with resistance to subsequent aqueous corrosion.
Grade 321H is a modification of 321 with higher carbon content, to provide improved high-temperature strength. A limitation with 321 is that titanium does not transfer well across a high-temperature arc, so it is not recommended as a welding consumable. In this case grade 347 is preferred - the niobium performs the same carbide stabilization task but can be transferred across a welding arc. Grade 347 is, therefore, the standard consumable for welding 321.
Like other austenitic grades, 321 and 347 have excellent forming and welding characteristics, are readily brake or roll-formed and have outstanding welding characteristics. Post-weld annealing is not required. They also have excellent toughness, even down to cryogenic temperatures. Grade 321 does not polish well, so is not recommended for decorative applications.
Chemical Composition
Typical compositional ranges for grade 321 stainless steel sheets:
Grade
C
Mn
Si
P
S
Cr
Mo
Ni
N
Other
321
0.08 max
2.00 max
0.75 max
0.045 max
0.030 max
17.0-19.0
-
9.0-12.0
0.10 max
Ti=5(C+N) min, 0.70 max
321H
0.04-0.10
2.00 max
0.75 max
0.045 max
0.030 max
17.0-19.0
-
9.0-12.0
-
Ti=4(C+N) min, 0.70 max
Mechanical Properties
Grade
Tensile Strength (MPa) min
Yield Strength 0.2% Proof (MPa) min
Elongation (% in 50 mm) min
Rockwell B (HR B) max
Brinell (HB) max
321
515
205
40
95
217
321H
515
205
40
95
217
Grade Specification Comparison
Grade
UNS No
Old British BS
Euronorm No
Swedish SS
Japanese JIS
321
S32100
321S31
1.4541
2337
SUS 321
321H
S32109
321S51
1.4878
-
SUS 321H
Applications
Aircraft piston engine manifolds
Expansion joints
Firearms production
Thermal oxidizers
Refinery equipment
High temperature chemical process equipment
Product Gallery
About Our Company
GMS is a medium-sized professional company integrating wholesale sales and processing of stainless steel materials, providing customers with one-stop services of sales, processing and logistics distribution.
GMS products mainly serve nuclear power engineering, petrochemical, electric furnace, boiler, pressure vessel, electric heating equipment, textile, pharmaceutical, mechanical equipment, kitchen equipment, solar energy, papermaking equipment and many other industries, with customers throughout the country.
The main products of the company include: 321, 310s, 309S, 316L, 304, 316TI, 410S, 202, 201, 904L, 317L, 904L, 2205, 2304 and other duplex stainless steel, as well as 800H, 600H and other high nickel alloys. We maintain standing stock of more than 3000 tons, and can arrange special orders for unique steel types and specifications. To meet diverse customer needs and achieve one-stop procurement services, our company provides embossing (domestic and Japanese), mirror polishing, plate polishing, grinding, flattening, and cutting (laser, water knife, plasma) services according to customer requirements.
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...