ASTM A209

ASTM A209 Steel Pipe

At UNIACERO, we proudly present our ASTM A209 tubing, a premium carbon molybdenum alloy steel Seamless Tubing, meticulously designed for boilers, boiler flues, and superheaters. This product stands as a testament to our commitment to quality, ensuring optimal performance even in the most demanding environments. Beginning with the steel-making practice, our ASTM A209 tubing is made from killed steel, ensuring a uniform and defect-free material. Whether you’re in the energy sector, manufacturing, or any industry requiring robust boiler systems, our tubing promises unparalleled efficiency, safety, and longevity.

ASTM A209 Specification

Our ASTM A209 tubing is not just a product; it’s a culmination of precision engineering and rigorous quality control. Dimensions range from 1/2 to 5 inches in outside diameter and 0.035 to 0.500 inches in minimum wall thickness. We offer various steel grades, each tailored for specific applications. The surface coatings are meticulously applied to resist corrosion and wear. Clients can choose from diverse end types and joint methods, ensuring compatibility with varied systems. Additionally, we provide top-tier machining services, ensuring that our tubing integrates seamlessly into your operations.

Production Standard	ASTM A209
Application	Seamless carbon-molybdenum alloy-steel boiler and superheater tubes
Manufacturing Process	Seamless
Steel Grade	T1
	T1a
	T1b
Chemical composition requirements(%)	Gr.T1	Gr.T1a	Gr.T1b
	C:0.10-0.20	C:0.15-0.25	C:0.14 MAX
	Mn:0.30-0.80	Mn:0.30-0.80	Mn:0.30-0.80
	P(MAX):0.025	P(MAX):0.025	P(MAX):0.025
	S(MAX):0.025	S(MAX):0.025	S(MAX):0.025
	Si:0.10-0.50	Si:0.10-0.50	Si:0.10-0.50
	Mo:0.44-0.65	Mo:0.44-0.65	Mo:0.44-0.65
Mechanical property	Gr.T1	Gr.T1a	Gr.T1b
	Yield strength,ksi(MPa):≥30（205）	Yield strength,ksi(MPa):≥32（220）	Yield strength,ksi(MPa):≥28（195）
	Tensile strength,ksi(Mpa):≥55（380）	Tensile strength,ksi(Mpa):≥60（415）	Tensile strength,ksi(Mpa):≥53（365）
	Elongation in 2in or 50mm（%）:≥30	Elongation in 2in or 50mm（%）:≥30	Elongation in 2in or 50mm（%）:≥30
Tolerance	Wall Thickness	+/-10
	Mass	0/+16%
	Outer Diameter	Hot-finished seamless
		4in(100mm) or under	0.4mm-0.8mm
		Over 4-7 1/2(100-200) incl	0.4mm-1.2mm
		Over7 1/2-9(200-225) incl	0.4mm-1.6mm
		Cold-finished seamless
		Under 1 in(25)	0.1mm-0.11mm
		1-1 1/2in(25-40) incl	0.15mm-0.15mm
		1 1/2 -2in(40-50) excl	0.2mm-0.2mm
		2-2 1/2in(50-65) excl	0.25mm-0.25mm
		2 1/2-3in(65-75) excl	0.3mm-0.3mm
		3 – 4in(75-100) incl	0.38mm-0.38mm
		4 – 7 1/2in(100-200) incl	0.38mm-0.64mm
		7 1/2 – 9in(200-225) incl	0.38mm-1.14mm

ASTM A209 Dimension Table

Understanding the importance of precision, our ASTM A209 tubing dimensions are crafted with utmost accuracy. Ranging from 1/2 to 5 inches [12.7 to 127 mm] in outside diameter and 0.035 to 0.500 inches [0.9 to 12.7 mm] in wall thickness, our tubes are designed to fit seamlessly into your systems. Each dimension is a result of careful consideration, ensuring optimal flow rates, pressure handling, and system efficiency. With UNIACERO, you’re not just getting a product; you’re investing in precision.

Outside Diameter：	1⁄2 to 5 in. [12.7 to 127 mm]
Wall Thickness：	0.035 to 0.500 in. [0.9 to 12.7 mm]

Chemical Requirements of ASTM A209

At UNIACERO, we understand that the chemical composition of our ASTM A209 tubing plays a pivotal role in its performance. Our tubes are formulated with a specific blend of carbon and molybdenum, ensuring high resistance to temperature variations and corrosive environments. This meticulous chemical composition ensures that our tubes can withstand the rigors of high-pressure boiler systems, offering you reliability and peace of mind.

Chemical Composition Requirements
Element	Composition, %
Element	Grade T1	Grade T1a	Grade T1b
Carbon	0.10–0.20	0.15–0.25	0.14 max
Manganese	0.30–0.80	0.30–0.80	0.30–0.80
Phosphorus, max	0.025	0.025	0.025
Sulfur, max	0.025	0.025	0.025
Silicon	0.10–0.50	0.10–0.50	0.10–0.50
Molybdenum	0.44–0.65	0.44–0.65	0.44–0.65

Mechanical Requirements of ASTM A209

Mechanical integrity is at the heart of our ASTM A209 tubing. We ensure that each tube meets stringent tensile and hardness requirements. From the tension tests conducted on every lot of 50 tubes to the flattening, flaring, and Brinell or Rockwell hardness tests on selected samples, we leave no stone unturned. With UNIACERO’s tubing, you benefit from a product that promises durability, resilience, and optimal performance under pressure.

Tensile Requirements
Mechanical Properties	Grade T1	Grade T1b	Grade T1a
Tensile strength, min, ksi [MPa]	55 [380]	53 [365]	60 [415]
Yield strength, min, ksi [MPa]	30 [205]	28 [195]	32 [220]
Elongation in 2 in. or 50 mm, min, %	30	30	30
For longitudinal strip tests a deduction shall be made for each 1⁄32-in. [0.8-mm] decrease in wall thickness below 5⁄16 in. [8 mm] from the basic minimum elongation of the following percentageWhen standard round 2-in. or 50-mm gage length or smaller proportion ally sized specimen with the gage length equal to 4D (four times the diameter) is used	1.50A 22	1.50A 22	1.50A 22

Steel Grades in ASTM A209

We offer ASTM A209 tubing in various steel grades, including A209 Grade T1, A209 Grade T1A, and A209 Grade T1B. Each grade is tailored to specific applications, ensuring optimal performance and longevity. Our commitment to quality means that each steel grade is formulated to meet the unique demands of different boiler and superheater systems. With UNIACERO, you’re not just choosing a product; you’re choosing a partner committed to delivering excellence.