ASTM A209 Seamless Alloy Steel Boiler

 

ASTM A209 Carbon Molybdenum Alloy Steel Boilers

 

Referenced document: ASTM A1016/A1016M Ferritic Alloy Steel, Austenitic Alloy Steel, and Stainless Steel Tubes

Steel grade: Grade T1, Grade T1a, Grade T1b

Outside diameter: 12.7mm-127mm

Wall thickness: 0.9mm-12.7mm

Length: 3-12M, single random or double random length, specified length in the order

Steelmaking practice: killed steel

Manufacture method: hot finished or cold finished

Process type: by seamless or not welded

Loading port: Xingang, China

Price terms: FOB, CFR, CIF

Payment terms: LC or TT according to the agreement between buyer and seller

Packing: alloy steel boiler are supplied in hexagonal bundles or round bundles tied with steel strip. Each bundle has two pieces of lifting belts for unloading. Loaded by 40"HQ container in 20-27mt.

 

Chemical composition requirements

Element	Composition, %
	Grade T1	Grade T1a	Grade T1b
Carbon	0.1-0.20	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

 

Tensile requirements

Item	Grade T1	Grade T1a	Grade T1b
Tensile strength, min, MPa	380	365	415
Yield strength, min, Mpa	205	195	220
Elongation in 2in. or 50mm	≥30%	≥30%	≥30%

 

Hardness requirement

Grade T1	146 HBW	80 HBW
Grade T1a	153 HBW	81 HBW
Grade T1b	137 HBW	77 HBW

 

Heat treatment

Hot finished tubes shall be heat treated at a temperature of 650℃ or higher. Cold finished tubes shall, after the final cold finishing, be heat treated at a temperature of 650 ℃ or higher, or tubing may be furnished in the full-annealed, isothermal annealed,or normalized and tempered condition. If furnished in the normailzed and tempered condition, the minimum tempering temperature shall be 650℃.

 

Forming operations

Tubes when inserted in the boiler shall stand expanding and beading without showing cracks or flaws. Superheater tubes when properly manipulated shall stand all forging, welding, and bending operations necessary for application without developing defects.

 

Advantage of our company

1. Our products has ever been exported to all over the world for important construction project.

2. We hold a sufficient inventory of carbon steel pipe products in a variety of material, sizes, shapes to meet your different requirements.

3. As the distributor and trader in the local market, we have long term cooperation and business relations with many world-famous manufacturers. Due to their strong support, not only is the price of our products cheaper than other suppliers, but also the quality stands the competition well.

4. After-sales service team. After buying our products, you are guaranteed to have a well-trained and dedicated team at your side to welcome any requests you might have.

 

The application of ASTM A209 steel tubes in boiler plant

 

 

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