321 stainless steel is Ni-Cr-Ti-type austenitic stainless steel, the performance is very similar to the 304, but due to the addition of the metal titanium, it has a better inter granular corrosion resistance and high temperature strength. The addition of titanium, making it effective control of the formation of chromium carbide. Excellent high-temperature stress of 321 stainless steel with a breaking (Stress Rupture) properties and high temperature creep resistance (Creep Resistance) stress mechanical properties are superior to 304 stainless steel.
Production Standards
|
Grade
|
GB/T 1220-2007
|
ASTM
|
DIN
|
JIS
|
KS
|
|
321
|
06Cr19Ni11Ti
|
321
|
1.4541
|
SUS321
|
STS321
|
Chemical composition
|
Grade
|
C(%)
|
Si(%)
|
Mn(%)
|
P(%)
|
S(%)
|
Cr(%)
|
Ni(%)
|
Ti(%)
|
Cu(%)
|
|
321
|
≤0.08
|
≤1.00
|
≤2.00
|
≤0.035
|
≤0.03
|
17.0-19.0
|
9.0-12.0
|
≥5×C%
|
----
|
Mechanical properties
|
TS
Mpa
|
YS
Mpa
|
EL
(%)
|
rate of reduction in area
(%)
|
Density
(g/cm3)
|
|
≥520
|
≥205
|
≥40
|
≥50
|
7.93
|
Specifications
|
Available technical
|
Available thickness
（mm）
|
Available width
（mm）
|
Available finish
|
Available origin
|
|
Cold rolled
|
0.4-3.0
|
Standard:1000 1219 1500
Special :can be ordered
|
2B / No.4 / HL / BA / Mirror/Checkered/Colored etc
|
TISCO / ZPSS / JISCO etc
|
|
Hot rolled
|
3.0-100
|
Standard:15000 1800 2000
Special :can be ordered
|
No.1/No.4/HL etc
|
TISCO / ZPSS / JISCO etc
|
Applications
Applied to the outdoor machine of chemical, coal and petroleum industry with high grain boundary corrosion resistance, heat resistant parts of building materials and difficult parts of heat treatment, such as:
- oil waste gas pipeline
- engine exhaust pipe
- boiler shell, heat exchanger, heating furnace parts,Noise components of 4 diesel engine
- boiler pressure vessel
- chemical transport vehicles
- expansion joint
- Spiral welded pipe for furnace pipe and dryer
