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439 Stainless Steel Welded Pipe Tube (heat exchange use)

Stainless steel grade 439 has good weld ability, brightness, and pitting corrosion resistance. It polishes well, and is good for deep drawing.

Stainless steel grade 439 has good weld ability, brightness, and pitting corrosion resistance. It polishes well, and is good for deep drawing.



Outer Diameter: 1mm-1500mm

Thickness: 0.1mm-50mm

Length: 1-12m

Surface: Annealed/Pickling/Polished

Shape: Round/Square/Hex

Technique: Hot Rolled/Cold Drawn


Chemical Composition

Element

Content (%)

Iron, Fe

81.3535

Chromium, Cr

17.35

Silicon, Si

0.35

Titanium, Ti

0.335

Manganese, Mn

0.25

Nickel, Ni

0.200

Molybdenum, Mo

0.1

Niobium, Nb (columbium, Cb)

0.02

Phosphorous, P

0.02

Nitrogen, N

0.0100

Carbon, C

0.01

Sulfur, S

0.0015


Mechanical Properties


Properties

Metric

Imperial

Tensile strength (annealed)

438 MPa

63500 psi

Yield strength (annealed/ @strain 0.200 %)

263 MPa

38100 psi

Modulus of elasticity

GPa

ksi

Poisson’s ratio

0.270 - 0.290

0.270 - 0.290

Elongation at break (In 2", 50% cold worked)

2.80%

2.80%

Hardness, Rockwell B (annealed)

72.9

72.9



All Wenzhou Taixin Steel products are packed, stored, transported according to the international regulation. The products are wrapped with anti-rust paper and steel rings to prevent damage. Identification labels are tagged according to standard specification or customer's instructions. Special packing is available as per customer's requirement.Ply wooden box are available for special protection. Other kinds of packing can be offered if request.



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