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| Category: | Metallurgy , Mining & Energy / Metallurgy & Mining / Stainless Steel |
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| Last Online:22 May, 2023 |
Name: 321H Stainless Steel pipes
Size: 1/2″ NB – 16″NB（Seamless Pipe Size); 1/2″ NB – 24″ NB(ERW Pipe Size)
Material: Stainless Steel
Type：Seamless / Welded / ERW / EFW
Thickness range: 0.3mm – 50 mm
Surface Treatment: Polishing, Hairline, Pickled, etc.
Finished condition: Round, Square, Rectangular, Coil，U Tube
Application: Petrochemical, Oil & Gas； Geothermal, Mining；Chemical Process, Pharmaceutical, Biomass；Sea Water, Water Desalination； LNG (Liquefied Natural Gas), Nuclear Power, Solar Power。
Model number:
Orignal: Wenzhou,Zhejiang
Standrad:ASTM A312, A358 / ASME SA312, SA358
Brand:
Technics:
Package: Packed in woven bag, or put in wooden case
Price:
Delivery: Accord Quantity
Certificate:
Production ability:
Product Detail
Stainless Steel 321H is the higher-carbon modification of stainless steel 321. In addition, 321H is stabilized by an addition of niobium to resist intergranular corrosion. It is also able to withstand higher temperatures than type 321, due to its elevated carbon levels. While 321H displays the same welding and forming characteristics of type 321, the metal cannot be hardened by heat treatment. It is utilized in situations where type 321 cannot withstand the high temperatures, typically those exceeding 1000° F. Type 321H displays better resistance against creep than both 321 and 304 stainless steels.
321H also shows resistance against acid corrosion in a variety of environments. Lower temperatures provide better resistance, but the metal is able to withstand up to a 10% acid solution, that has been diluted, at elevated temperatures. However, the metal shows very little resistance against chlorine or sulfuric solutions at any given temperature.
Specification of 321H Stainless Steel Seamless Tube
|
Standard |
ASTM A312, A358 / ASME SA312, SA358 |
|
Grade |
321H |
|
Type |
Seamless / Welded / ERW / EFW |
|
Length |
01 Meter to 12.5 Meters, Single Random Length, Double Random Length And Customize Size. |
|
End |
Plain End, Bevelled End, Threaded |
Applications of 321H Stainless Steel Seamless Tube
Stainless Steel 321H Pipes Equivalent Grades
|
STANDARD |
WERKSTOFF NR. |
UNS |
JIS |
EN |
|
SS 321H |
1.4878 |
S32109 |
SUS 321H |
X12CrNiTi18-9 |
Stainless Steel 321H Pipes Chemical Composition
|
Element |
SS 321 |
SS 321H |
|
C |
0.08 max |
0.04 – 0.10 |
|
Mn |
2.0 max |
2.0 max |
|
Si |
1.0 max |
1.0 max |
|
P |
0.045 max |
0.045 max |
|
S |
0.030 max |
0.030 max |
|
Cr |
17.00 - 19.00 |
17.00 - 19.00 |
|
N |
0.10 max |
0.10 max |
|
Ni |
9.00 - 12.00 |
9.00 – 12.00 |
|
Ti |
5(C+N) – 0.70 max |
4(C+N) – 0.70 max |
Stainless Steel 321H Pipes Mechanical & Physical Properties
|
Element |
SS 321/321H |
|
Density |
8.0 g/cm3 |
|
Melting Point |
1457 °C (2650 °F) |
|
Tensile Strength |
Psi – 75000 , MPa – 515 |
|
Yield Strength (0.2%Offset) |
Psi – 30000 , MPa – 205 |
|
Elongation |
35 % |
