Products Description
ASTM A210/A210M is a standard specification titled "Standard Specification for Seamless Medium-Carbon Steel Boiler and Superheater Tubes" established by the American Society for Testing and Materials (ASTM). Below is a detailed introduction to this standard:
1. Scope
Applications:
Suitable for boiler tubes, flue tubes, including safety ends, domes, support tubes, and superheater tubes.
Size Range:
Typically covers OD from 1/2 inch to 5 inches (12.7 mm to 127 mm) and minimum wall thickness from 0.035 inch to 0.500 inch (0.9 mm to 12.7 mm).
Other sizes may be provided if all other requirements of the standard are met.
Mechanical performance requirements do not apply to tubes with ID < 1/8 inch (3.2 mm) or thickness < 0.015 inch (0.4 mm).
2. Chemical Composition
Grade A-1:
C ≤ 0.27%, Mn ≤ 0.93%, Si ≥ 0.1%, P ≤ 0.035%, S ≤ 0.035%.
Grade C:
C ≤ 0.35%, Mn 0.29–1.06%, Si ≥ 0.1%, P ≤ 0.035%, S ≤ 0.035%.
3. Mechanical Properties
Tensile Strength:
Grade A-1: ≥415 MPa
Grade C: ≥485 MPa
Yield Strength:
Grade A-1: ≥255 MPa
Grade C: ≥275 MPa
Elongation:
Both grades: ≥30%
4. Manufacturing Process
Forming:
Seamless process ensures structural integrity and uniformity for high-temperature and high-pressure environments.
Heat Treatment:
Required as per grade and end-use, with methods determined accordingly.
5. Inspection & Testing
Tensile Test:
1 sample per batch ≤50 tubes; 2 samples per batch >50 tubes.
Flattening Test:
1 sample per batch (not used for flaring), tested at both ends.
For Grade C tubes ≤2.375 inches (60.3 mm), tears/cracks at 12 o'clock and 6 o'clock are not grounds for rejection.
Flaring Test:
1 sample per batch (not used for flattening), tested at both ends.
Hardness Test:
2 samples per batch for Brinell or Rockwell hardness.
Hydrostatic Test or NDT:
Every tube must undergo hydrostatic testing, unless NDT is specified by the buyer.
6. Marking
Tubes must be marked with standard number, grade, size, production lot, and heat number for traceability and quality control.
Applications
Due to their high-temperature resistance, pressure endurance, strength, and toughness, ASTM A210 tubes are widely used in power plant boilers, industrial boilers, superheaters, and other high-pressure equipment. Different grades can be selected based on specific operational conditions.
Products Specification
Standard: Astm
Section Shape: Round
Place Of Origin: China
Application: Boiler Pipe
Production Process: Hot Rolled, Cold Drawn
Certification: Ce
Whether Alloy: Non-Alloy
Tolerance: ±10%
Category: Seamless Steel Pipe
Standard & Grade: ASTM A210/A210M
Usage: Standard Specification for seamless medium-carbon steel boiler and superheater tubes for high, middle and low pressure boiler and other pressure purpose
Ends: Square Ends/Plain Ends (straight cut, saw cut, torch cut), Beveled/Threaded Ends
GNEE
ASTM A210/210M Boiler Steel Tube
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