ASME/ASTM B444 (UNS N06625)

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We can supply steel tubes and pipes to B444 specification with Nickel-Chromium-Molybdenum-Columbium Alloys (UNS N06625) and Nickel-Chromium-Molybdenum-Silicon Alloy (UNS N06219).

The specification is from 3/32 inches (2.4mm) to 1-1/4 inches (31.8mm), inclusive in two grades with different heat-treated conditions: 
Grade 1 (annealed)--Material suitable for service temperatures up to 1100F (593C)
Grade 2 (solution annealed)--Material suitable for  service temperatures above 1100F (593C) when resistance to creep and rupture is required.

B444 Chemical Properties: 

 Element

Composition Limits, %

Carbon

0.10 max

Manganese

0.50 max

Silicon

0.50 max

Phosphorus

0.15 max

Sulphur

0.15 max

Chromium

20.0 – 23.0

B444 Tensile Requirements:

Grade

 Tensile Point (Mpa)

 Yield Point (Mpa)

Elongation (%) in 2 in. or 50mm

 Grade 1

 827

 414

30

 Grade 2

 690

 276

30



We can supply under request other Non Ferrous Nickel and Nickel Alloy Tubes and pipes. Please contact us for more details.
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