ASME SA210 Grade A1 Seamless Boiler Tubes
ASME SA210 Grade A is a grade of ASME SA210 standard, American Standard.ASME SA210 Grade A1 Medium-Carbon Steel Boiler Tube shall be made by seamless process.

Description

ASME SA210 Grade A1  Boiler Tube Dimensional Range & Specification
Outside Diameter：12.7mm——127mm
Wall thickness：0.9mm——12.7mm
Length：6000mm、12000m or specified length as required.

ASME SA210 Grade A1 Seamless Boiler and Superheater Tubes

OD (mm) Wall Thickness(mm)
2 2.5 3 3.5 4 4.5 5 6 6.5-7 7.5-8 8.5-9 9.5-10 11 12
Φ25-Φ28 ● ● ● ● ● ●
Φ32 ● ● ● ● ● ●
Φ34-Φ36 ● ● ● ● ● ●
Φ38 ● ● ● ● ● ●
Φ40 ● ● ● ● ●
Φ42 ● ● ● ● ●
Φ45 ● ● ● ● ● ●
Φ48-Φ60 ● ● ● ● ● ● ●
Φ63.5 ● ● ● ● ● ● ●
Φ68-Φ73 ● ● ● ● ● ●
Φ76 ● ● ● ● ● ● ● ● ● ●
Φ80 ● ● ● ● ● ● ● ● ● ●
Φ83 ● ● ● ● ● ● ● ● ● ●
Φ89 ● ● ● ● ● ● ● ● ● ●
Φ95 ● ● ● ● ● ● ● ● ● ●
Φ102 ● ● ● ● ● ● ● ● ● ●
Φ108 ● ● ● ● ● ● ● ● ● ●
Φ114 ● ● ● ● ● ● ● ● ●
Φ121 ● ● ● ● ● ● ● ● ●
Φ127 ● ● ● ● ● ● ● ● ●

Manufacture
ASTM A210 Grade A1 Seamless boiler tubes are made by the seamless process and are either hot-finished or cold-finished, as specified.

Heat Treatment
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.

ASME SA210 Grade A1 Boiler Tube Outside Diameter & Tolerance

Hot rolled
Outside Diameter, mm Tolerance, mm
OD≤101.6 +0.4/-0.8
101.6＜OD≤127 +0.4/-1.2
Cold Drawn
Outside Diameter, mm Tolerance, mm
OD＜25.4 ±0.10
25.4≤OD≤38.1 ±0.15
38.1＜OD＜50.8 ±0.20
50.8≤OD＜63.5 ±0.25
63.5≤OD＜76.2 ±0.30
76.2≤OD≤101.6 ±0.38
101.6＜OD≤127 +0.38/-0.64

ASME SA210 Grade A1  Boiler Tube Wall thickness & Tolerance

Hot rolled
Outside Diameter , mm Tolerance, %
OD≤101.6, WT≤2.4 　+40/-0
OD≤101.6, 2.4＜WT≤3.8 　+35/-0
OD≤101.6, 3.8＜WT≤4.6 　+33/-0
OD≤101.6, WT>4.6 　+28/-0
OD>101.6, 2.4＜WT≤3.8 　+35/-0
OD>101.6, 3.8＜WT≤4.6 　+33/-0
OD>101.6, WT>4.6 　+28/-0
Cold Drawn
Outside Diameter , mm Tolerance, %
OD≤38.1 　+20/-0
OD>38.1 　+22/-0
ASME SA210 Grade A1 Boiler Tube Mechanical & Physical Properties
Standard Grade Tensile Strength(MPa) Yield Strength(MPa) Elongationδ(%)
ASME SA210 A-1 ≥ 415 ≥ 255 ≥30
C ≥485 ≥275 ≥30

ASME SA210 Grade A1 Boiler Tube Chemical Composition(%)

Standard Grade chemical composition,%
C Si Mn P S
ASME SA210 A-1 ≤0.27 ≥0.10 ≤0.93 ≤0.035 ≤0.035
C ≤0.35 ≥0.10 0.29-1.06 ≤0.035 ≤0.035