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Mechanical Tubing & OCTG

ALLOY 825 & ALLOY 28 TUBE

UNS N08825 : ASTM B423 UNS N080287 : ASTM B668

General Scope

These nickel chromium alloys combine excellent corrosion resistance with a wide range of mechanical strengths.

They are used extensively within chemical processing plants and down hole tubulars in deep, sour gas wells.

Alloy 825 & Alloy 28 Tube

Chemical Composition

UNS N08825

CSiMnPSCrNiMoCUTiAlFe
Min-----19.5038.002.501.500.60-22.00
Max0.050.501.000.030-23.5046.003.503.001.200.20-

UNS N08028

CSiMnPSCrNiMoCUFe
Min-----26.0030.003.000.30-
Max0.030.702.000.030-28.0034.004.001.40-

Mechanical Properties

Condition: UNS N08825 Annealed

PropertyValue
U.T.S85 KSI Min
0.2% Proof Stress35 KSI Min
Elongation30%

Condition: UNS N08028 Annealed

PropertyValue
U.T.S73 KSI Min
0.2% Proof Stress31 KSI Min
Elongation40%

Condition: UNS N08825 Cold Worked

PropertyValue
U.T.S125 KSI Min
0.2% Proof Stress100 KSI Min
Elongation5%

Condition: UNS N08028 Cold Worked

PropertyValue
U.T.S120 KSI Min
0.2% Proof Stress90 KSI Min
Elongation5%