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stainless steel union ss321 MSS SP83 class 150 forged hammer union

Quick Details

Port: SHANGHAI PORT, XINGANG PORT
Payment Terms: T/T
Place of Origin: Hebei China
Shape: Equal
Size: 1/4"-4"
Color: Natural
Connection: Male
Standard: MSS SP83
Model Number: 1/4"-4"
Surface treatment: Anti-rust Oil
Brand Name: MTS
Technics: Forged
Packing: Plywood Case
Product name: Union
Head Code: Round
Application: Chemical
Body material: SS321
Certificate: ISO 9001
Packaging Detail: Pallets, cartons, plywood cases
Package Preview: https://sc02.alicdn.com/kf/U167b9ff93a3a4b2282a931226cc3ecae3.jpg_640x640.jpg
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Product Description

 

As a modified version of SS304, stainless steel 321 (SS321) is a stabilized austenitic stainless steel with a titanium addition of at least 5 times the carbon content. The titanium addition reduces or prevents the sensitization of carbide precipitation during welding and in services at the temperature range of 425-815°C. It also improves the some of the properties at elevated temperatures. SS321 provides outstanding resistance to oxidation and corrosion and has good creep strength. It is used primarily in oil refinery equipment, pressure vessel piping, radiant superheaters, bellews, and high-temperature heat treatment equipment.

Chemical Composition

The Chemical Composition of SS321, %

Carbon

≤0.08

Manganese

≤2.00

Phosphorus

≤0.045

Sulfur

≤0.030

Silicon

≤0.75

Chromium

17.00-19.00

Nickel

9.00-12.00

Titanium

≤0.70

Nitrogen

≤0.10

Iron

Balance

 

 Mechanical Properties

 

Tensile Strength,min.

Yield Strength, min.

Elongation

Hardness

ksi(Mpa)

ksi(Mpa)

%

85(586)

35(241)

55

B70

Packaging & Shipping

 threaded-pipe-union.jpg

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