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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 321 & 347 Stainless Steel Overview
Grades 321 and 347 are austenitic 18/8 steels (based on 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, offering high strength, scaling resistance, phase stability, and subsequent aqueous corrosion resistance.
Grade 321H features higher carbon content for improved high-temperature strength. While 321 is not recommended as a welding consumable due to titanium transfer issues, Grade 347 serves as the standard consumable for welding 321.
Both grades offer excellent forming and welding characteristics, outstanding toughness even at cryogenic temperatures, and do not require post-weld annealing. Note that Grade 321 does not polish well and is not recommended for decorative applications.
Chemical Composition of 321 Stainless Steel
Table 1: Composition Ranges for 321-Grade Stainless Steel
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 of 321 Stainless Steel
Table 2: Mechanical Properties of 321-Grade Stainless Steel
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
Table 4: Grade Specifications for 321-Grade Stainless Steel
Grade
UNS No
Old British BS
Old British En
Euronorm No
Euronorm Name
Swedish SS
Japanese JIS
321
S32100
321S31
58B, 58C
1.4541
X6CrNiTi18-10
2337
SUS 321
321H
S32109
321S51
-
1.4878
X10CrNiTi18-10
-
SUS 321H
321 / 321H Stainless Steel Applications
Typical applications include:
Aircraft piston engine manifolds
Expansion joints
Firearms production
Thermal oxidizers
Refinery equipment
High temperature chemical process equipment
321 Stainless Steel Plate Gallery
About Our Company
GMS is a medium-sized professional company integrating wholesale sales and processing of stainless steel materials, providing customers with comprehensive services including sales, processing, and logistics distribution.
Our products serve numerous industries including nuclear power engineering, petrochemical, electric furnace, boiler, pressure vessel, electric heating equipment, textile, pharmaceutical, mechanical equipment, kitchen equipment, solar energy, and papermaking equipment, with customers nationwide.
Our main products include: 321, 310s, 309S, 316L, 304, 316TI, 410S, 202, 201, 904L, 317L, 2205, 2304 duplex stainless steel, as well as 800H, 600H high nickel alloys. We maintain standing stock of over 3000 tons and can arrange special orders for unique steel types and specifications.
To meet diverse customer needs and provide one-stop procurement services, we offer embossing (domestic and Japanese), mirror polishing, plate polishing, grinding, flattening, and cutting services (laser, water jet, plasma) 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...