ASME SA213 T91 | ASTM A213 Gr T91 Alloy Steel Seamless Tube

ASTM A213 T91 & ASME SA 213 T91 Seamless Tubes Manufacturer & Supplier

Alloy Steel T91 Tubes is basically a martensitic and ferritic based steel alloy that mainly consists of chromium-molybdenum steel that is usually micro-alloyed with vanadium as well as niobium. The alloy has full control over the nitrogen content as per the industrial and standard specification. The alloy is widely used in a number of applications that are used at high temperature. The alloy often exhibits outstanding high-temperature strength and creep behavior at a temperature range of up to 600 deg C. moreover; the elements like chromium content this alloy consists of providing good oxidation and corrosion resistance. We are certified manufacturer, stockist, supplier, trader and supplier of ASME SA213 T91 and ASTM A231 T91 tubes.

The alloy steel offers better-quality performance and allows high resistance to thermal fatigue and it has high heat transfer and low thermal expansion at high temperature. The steel is widely used for manufacturing tubes that are demanded in industries due to its exceptional features and mechanical properties.

Alloy Steel T91 Tubes

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Chrome Moly T91 Tubing

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Where can I buy these Alloy Steel T91 Tubes?
Solitaire Overseas is one of the best manufacturing companies where you can buy these superb quality tubes. Being one of the presumed manufacturer, supplier, and exporter of alloy steel tubes we keep in mind that all our products are made as per the demand of customers. We manufacture these tubes using the top-notch quality of raw material that is well inspected by our qualified professionals. They make sure that all the material used for making these tubes is tested so that no fault product is manufactured. Not only, high-quality raw material is used for manufacturing, but the latest machines and modern technologies are also used for creating these tubes. These tubes exhibit features like formability, workability, ductility, oxidation resistance pitting and cracking resistance, corrosion resistance, durability, and long service life. All these features make alloy steel tubes highly demanding and popular for various applications.

Testing and packaging
Now when the manufacturing of tubes fully done, these Alloy Steel T91 Seamless Tubes go through different tests and inspections. All these tests are done by our hired qualified experts and inspection agencies. They conduct these tests and inspections under different temperatures and pressure so as to make sure that all the tubes are made using a high-quality product and will offer applications best performance In the end, these Alloy Steel T91 Tubes are packed in bundles or bubble wrapping and delivered to their respective customers worldwide.

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Specification

Specifications

ASTM A213 / ASME SA213

Dimensions

ASTM, ASME and API

Tubes Size

1/2″ OD up to 5″ OD, customs diameter also available

Schedule

SCH20, SCH30, SCH40, STD, SCH80, XS, SCH60, SCH80, SCH120, SCH140, SCH160, XXS

Type :

Seamless

Form :

Round, Square, Rectangular, Hydraulic Etc

Length :

Single Random, Double Random & Cut Length.

Outer Diameter

6.2500mm; WT:1-200mm

Alloy T91 Tubes Equivalent Grades

STANDARD	WERKSTOFF NR.	UNS
A213 T91	1.4903	K91560

Chrome Moly T91 Tubes Chemical Composition

Element	Alloy T91
C, %	0.08-0.12
Mn, %	0.30-0.60
P, %	0.020
S, %	0.010
Si, %	0.20-0.50
Cr, %	8.00-9.50
Mo, %	0.85-1.05
Ni, %	0.40
V, %	0.18-0.25
Cb,%	0.06-0.1
N,%	0.030-0.070
Al,%	0.04

Alloy Steel T91 Tubing Mechanical & Physical Properties

Element	Alloy Steel T91
Tensile Strength	585 min, MPa
Yield Strength	415 min, MPa
Elongation	20 % min

T91 Alloy Steel Tube Application

Chrome Moly T91 Tubes in various Application Industries

Food Processing Industry

Fabrication Industry

Oil and Gas Industry

Chemical Industry

Plumbing

General Purpose Applications

Heating

Water Supply Systems

Power Plant

Paper & Pulp Industry

FAQ

ASTM A213 T91 tubes are high-performance, seamless steel tubes specifically designed for demanding applications in power plants, refineries, and other industrial settings requiring exceptional resistance to high temperatures and pressure. They are manufactured through a hot rolling or cold drawing process to create a hollow cylinder with no seams or welds, ensuring superior strength and consistency.

They play a vital role in transferring heat to steam at very high temperatures within power plants. T91 tubes can be used in headers that connect boiler tubes and distribute fluids under high pressure. These tubes can be used in piping systems for conveying hot oil, gas, or other fluids in demanding industrial environments.

T91 surpasses many other steel grades in its ability to withstand extreme temperatures and pressure, ensuring reliable performance in superheater tubes, headers, and other demanding environments. While welding requires specific techniques due to the material properties, T91 tubes can be welded to create secure joints in high-pressure piping systems. At elevated temperatures, T91 exhibits minimal creep, meaning it resists deformation under constant stress, crucial for long-lasting performance in critical applications. T91 offers superior resistance to oxidation at high temperatures, slowing down the degradation process and extending the lifespan of the tubes.

Custom sizes and finishes for ASME SA 213 T91 tubes might be available upon request. However, due to their specialized production process, there may be limitations. Please provide details about your desired dimensions, tolerances, and surface finish requirements for an accurate quote and lead time information.

For slightly less demanding applications, other steel grades like ASTM A213 T22 or T23 might be suitable. These offer good high-temperature performance at a lower cost compared to ASME SA 213 T91. However, the final choice depends on the specific project requirements and temperature/pressure limitations.