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Stainless steel Alloy 347/347H seamless pipe tube

    Type: Seamless, Welded
    OD: 1/2"-48"
    Thickness: SCH5-SCHXXS
    Length: 0-12M, Customized
    Process: Hot/Cold Rolled,Hot work,Cold drawn
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Stainless steel Alloy 347/347H seamless pipe tube, ASME SA312 347 Stainless Steel Pipes Distributor, Stainless Steel ASME SA312 UNS S34700 ERW Pipe Manufacturer, ASTM A312 1.4550 Stainless Steel Round Pipes Exporter, SS ASME SA358 UNS S34700 Large Diameter Pipes Supplier.

Stainless Steel Alloy 347/347H Seamless Pipe Tube:

Stainless steel Alloy 347 seamless pipe tube is a type of stabilized Austenitic stainless steel with Niobium and 347H is its high carbon version. 347 can be the version with the addition of Niobium and Tantalum based on the 304 stainless steel. Niobium-tantalum in ASME SA312 347 Stainless Steel Pipe can refine grain, resist intergranular corrosion and promote aging hardening. Stainless Steel ASME SA312 UNS S34700 ERW Pipe should be used where requiring intermittent heating between 800ºF (427ºC) and 1650ºF (899ºC) or for welding under conditions which prevent a post-weld anneal.

 

Stainless Steel 1.4550 Welded Pipes are also advantageous for high temperature service because of its good mechanical properties. Stainless Steel Alloy 347/347H Seamless Pipe Tube is offers superior creep and stress rupture. SS UNS S34700 ERW Pipe should be considered for applications which require irregular heating between 800 degrees F to 1650 degrees F or for welding under conditions which prevent a post-weld anneal. Stainless Steel UNS S34700 Seamless Pipes are used in numerous applications such as Aircraft Exhaust Stacks, Cabin Heaters, Heavy Wall Welded Equipment, Oil and Gas Refineries, Petroleum Refining Fluid Catalytic Cracking Units, Polythionic Acid Service, Recuperators, etc.


Chemical Analysis

Weight % (all values are maximum unless a range is otherwise indicated)

Element

347

347H

Chromium

17.00 min.-19.00 max.

17.00 min.-19.00 max.

Nickel

9.00 min.-13.00 max.

9.00 min.-13.00 max.

Carbon

0.08

0.04 min.-0.10 max.

Manganese

2.00

2.00

Phosphorus

0.045

0.045

Sulfur

0.03

0.03

Silicon

0.75

0.75

Columbium & Tantalum

10 x (C + N) min.-1.00 max.

8 x (C + N) min.-1.00 max.

Iron

Balance

Balance

 

Mechanical Properties

Typical Values at 68°F (20°C)


Yield Strength
0.2% Offset

Ultimate Tensile
Strength

Elongation
in 2 in.

Hardness

psi (min.)

(MPa)

psi (min.)

(MPa)

% (min.)

(max.)

30,000

205

75,000

515

40

201 Brinell


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