Name: ASTM A213 T9 / UNS K90941 Seamless Steel Tubes for Boiler Superheater and Heat-Exchanger
Brand: Yuhong Group Co.,Ltd
SKU: ASTM A213 T9
Price: 1000000.00 USD
Availability: InStock

Yuhong Holding Group Co.,LTD

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ASTM A213 T9 / UNS K90941 Seamless Steel Tubes for Boiler Superheater and Heat-Exchanger

Product Details:

Place of Origin:	China
Brand Name:	YUHONG
Certification:	ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001-2008
Model Number:	ASTM A213 T9

Payment & Shipping Terms:

Minimum Order Quantity:	10PCS
Price:	Negotiable
Packaging Details:	Requirements/ Ply-wooden Case/ Iron Case/ Bundle with plastic Cap
Delivery Time:	Depends on quantity
Payment Terms:	T/T,L/C
Supply Ability:	1000 Tons per month

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Detailed Product Description

Highlight:

ASTM A213 T9 seamless steel tubes

UNS K90941 boiler superheater tubes

heat-exchanger alloy steel tubes

ASTM A213 T9 / UNS K90941 Seamless Steel Tubes

High-performance seamless alloy steel tubes engineered for boiler superheaters and heat-exchangers in demanding high-temperature applications.

Product Introduction & Core Specifications

ASTM A213 T9 is a seamless alloy steel tube specifically engineered for high-temperature service in boilers, superheaters, and heat exchangers. This ferritic alloy steel offers superior creep strength and oxidation resistance under prolonged exposure to heat and pressure.

Conforming to the latest ASTM A213/A213M-24 standard, these tubes cover a size range from 1/8 inch (3.2 mm) to 5 inches (127 mm) outside diameter, with wall thicknesses from 0.015 to 0.500 inches (0.4 to 12.7 mm). The seamless construction ensures uniform strength and enhanced safety in critical pressure applications.

Material & Key Characteristics

ASTM A213 T9 is a chromium-molybdenum alloy steel (9Cr-1Mo type) that delivers exceptional performance in high-temperature environments:

High-Temperature Strength: Excellent resistance to deformation (creep) under stress at elevated temperatures
Good Oxidation Resistance: Chromium content forms a stable oxide layer protecting against scaling in steam and flue gas environments
Thermal Stability: Maintains mechanical properties during long-term operation in high-heat conditions

These tubes are supplied in a heat-treated condition, typically involving normalizing and tempering processes to achieve optimal properties.

Chemical Composition & Mechanical Properties

The performance of T9 tubes is ensured through tightly controlled chemical composition and guaranteed mechanical properties.

Chemical Composition (Weight %):

Element	Composition (%)
Carbon (C)	0.15
Manganese (Mn)	0.30 - 0.60
Phosphorus (P)	0.025
Sulfur (S)	0.025
Silicon (Si)	0.25 - 1.00
Chromium (Cr)	8.00 - 10.00
Molybdenum (Mo)	0.90 - 1.10

Typical Mechanical Properties:

Property	Requirement
Tensile Strength	415 MPa (60 ksi)
Yield Strength	205 MPa (30 ksi)
Brinell Hardness	179 HBW / 190 HV / 89 HRB
Elongation	30%

Key Applications

ASTM A213 T9 seamless tubes are primarily used in demanding high-temperature environments including:

Power Generation Boilers: As superheater and reheater tubes where steam temperatures are extremely high
Heat Recovery Steam Generators (HRSGs): In components exposed to high-temperature exhaust gases
Petrochemical Industry: For heat exchanger tubing in cracking furnaces and other high-temperature process units