ASME/ASTM A178

ASTM Standard Logo

Electric-Resistance-Welded Carbon Steel and Carbon-Manganese Steel Boiler and Superheater Tubes to ASTM A 178/A 178M Standard

We supply  A178 steel tubes with outside diameter from 1/2 to 5 in. [12.7 to 127 mm] and 0.035 to 0.360 in. [0.9 to 9.1 mm], inclusive, in minimum wall thickness.

A178 Chemical Properties:

 

Grade A

Low-Carbon

Grade C

Medium-Carbon Steel

Grade D

Carbon-Manganese Steel

Carbon

0.06-0.18

0.35 max

0.27 max

Manganese

0.27-0.63

0.80 max

1.00-1.50

Phosphorus, max

0.035

0.035

0.030

Sulphur, max

0.04

0.035

0.015

Silicon

...

...

0.10 min

A178 Tensile Requirements:

Grade

 Tensile Point (Mpa)

 Yield Point (Mpa)

Elongation (%) in 2 in. or 50mm

 Grade C

 255

 415

30

 Grade D

 275

 485

30


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