ASTM A210

SEAMLESS MEDIUM-CARBON STEEL BOILER AND SUPERHEATER TUBES ASTM A210

Standard:

ASTM A210 —American Society for Testing and Materials Standards

ASME SA210 — AmericanSociety of Mechanical Engineers standards

Purpose:

For boiler pipesand boiler flue pipe, including security side, the dome and the support tubeand superheater tubes minimum wall thickness of seamless carbon steel pipes.

The mainproduction steel grades:

A-1, C, etc. arenegotiated, but also supply other grades of steel.

Mechanicalproperties:  

Standard Grade Tensile strength (MPa) Yield strength (MPa) Elongation (%)
ASTMA210
ASME SA210
A-1 ≥415 ≥255 ≥30
C ≥485 ≥275 ≥30

Chemical composition:

Standard Grade Chemical Composition
C Si Mn P S Cr Mo Cu Ni V
ASTM A210
ASME SA210
C ≤0.35 ≥0.10 0.29~1.06 ≤0.035 ≤0.035 / / / / /
A-1 ≤0.27 ≥0.10 ≤0.93 ≤ 0.035 ≤0.035 / / / / /

Hot-finished tubes need not be heat treated. Cold-finished tubes shall be given a subcritical anneal, a full anneal, or a normalizing heat treatment after the final cold-finishing process.

The tubes shall have a hardness not exceeding the following: 79 HRB or 143 HRB for Grade A-1,89 HRB or 179 HRB for Grade C.

Hydrostatic or Nondestructive Electric Test —Each tube shall be subjected to the hydrostatic, or,

instead of this test, a nondestructive electric test may be used when specified by the purchaser

In addition to the marking prescribed in Specifi-cation A 450/A 450M, the marking shall indicate

whether the tube is hot-finished or cold-finished.