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ASTM A213 specification covers seamless ferritic and austenitic steel boiler, superheater,
and heat-exchanger tubes, designated Grades T5, T9, T11, T12, T22,
T91, etc
Grades containing the letter H in their designation have
requirements different from those of similar grades not containing
the letter H. These different requirements provide higher
creep-rupture strength than normally achievable in similar grades
without these different requirements.
The tubing sizes and thicknesses usually furnished to this
specification are 1/8 in. [3.2 mm] in inside diameter to 5 in. [127
mm] in outside diameter and 0.015 to 0.500 in. [0.4 to 12.7 mm],
inclusive, in minimum wall thickness or, if specified in the order,
average wall thickness. Tubing having other diameters may be
furnished, provided such tubes comply with all other requirements
of this specification.
A213 is often called chrome moly tube because of the chemical makeup of
Molybdenum (Mo) and Chromium (Cr). Molybdenum increases the
strength of steel as well as the elastic limit, resistance to wear,
impact qualities, and hardenability. Moly increases the resistance
to softening, restrains grain growth and makes chromium steel less
susceptible to embrittlement. Moly is the most effective single
additive that increases high temperature creep strength. It also
enhances the corrosion resistance of steel, and inhibits pitting.
Chromium (or chrome) is the essential constituent of stainless
steel. Any steel with 12% or more Chrome is considered stainless.
Chrome is virtually irreplaceable in resisting oxidation at
elevated temperatures. Chrome raises the tensile, yield, and
hardness at room temperatures. The composition chrome moly alloy
steel Pipe make it ideal for use in power plants, refineries, petro
chemical plants, and oil field services where fluids and gases are
transported at extremely high temperatures and pressures.
Alloy steel is a steel that is alloyed with various elements (1.0% to 50% by weight) to improve its mechanical properties. Alloy steels are divided into two groups: low alloy steels and high alloy steels. The difference between the two is somewhat arbitrary: Smith and Hashemi define the difference as 4.0%, while Degarmo et al. define the difference as 8.0%. [1][2] Most commonly, the term "alloy steel" refers to low alloy steel.
Strictly speaking, every steel is an alloy, but not all steels are called "alloy steels". The simplest steel is an alloy of iron (Fe) and carbon (C) (about 0.1% to 1%, depending on the type). However, the term "alloyed steel" is a standard term referring to steels that have deliberately added other alloying elements in addition to carbon. Common alloying agents include manganese (the most common one), nickel, chromium, molybdenum, vanadium, silicon, and boron. Less common alloying agents include aluminum, cobalt, copper, cerium, niobium, titanium, tungsten, tin, zinc, lead, and zirconium.
The following are a series of improved properties of alloy steel (compared to carbon steel): strength, hardness, toughness, wear resistance, corrosion resistance, hardenability and hot hardness. To achieve some of these improved properties, the metal may require heat treatment.
SA213 T9 Alloy Steel Seamless Tubes Specification | ASTM A213 / ASME SA213 |
SA213 T9 Alloy Steel Seamless Tubes Grades | ASTM A213 T5, ASTM A213 T9, ASTM A335 T11, ASTM A213 T22, ASTM A335 T91, ASME SA213 T5, ASME SA213 T9, ASME SA213 T11, ASME SA213 T22, ASME SA213 T91 |
SA213 T9 Alloy Steel Seamless Tubes Type | Seamless - Hot Rolled / Cold Drawn |
SA213 T9 Alloy Steel Seamless Tubes Outer Diameter Size | A213 - 3/8" NB to 30" NB (Nominal Bore Size) |
SA213 T9 Alloy Steel Seamless Tubes Wall Thickness | Schedule 20 to Schedule XXS (Heavier On Request) Up to 250 mm Thickness |
A213 T9 Alloy Steel Seamless Tubes Length | 5 to 7 Meters, 09 to 13 Meters, Single Random Length, Double Random Length And Customize Size. |
SA213 T9 Alloy Steel Seamless Tubes Pipe Ends | Plain Ends / Beveled Ends / Coupling |
SA213 T9 Alloy Steel Seamless Tubes Delivery Conditions | As Rolled, Cold Drawn, Normalizing Rolled, Thermomechanical Rolled / Formed, Normalizing Formed, Normalized and Tempered / Quenched and Tempered - BR / N / Q /T |
SA213 T9 Alloy Steel Seamless Tubes Coating | Epoxy Coating / Colour Paint Coating / 3LPE Coating. |
SA213 T9 Alloy Steel Seamless Tubes Other Testing | Tensile Test, Transverse Tension Tests, Flattening Test, Metal Structure and Etching Tests, Photomicrographs, Hardness Tests, etc. |
SA213 T9 Alloy Steel Seamless Tubes Dimension | All Pipes Is Manufactured and Inspected / Tested to the Relevant standards including ASTM, ASME, API. |
SA213 T9 Alloy Steel Seamless Tubes Value Added Services | Draw / Expansion / Machining / Sand Blasting / Shot Blasting / Galavanizing / Heat Treatment |
SA213 T9 Alloy Steel Seamless Tubes Packaging | Loose / Bundle / Wooden Pallet / Wooden box-a / Plastic Cloth Wraps / Plastic End Caps / Beveled Protector |
SA213 T9 Alloy Steel Seamless Tubes Shipment & Transportation | By Road - Truck / Train, By Sea - Break-bulk Conventional Vessel / FCL (Full Container Load) / LCL (Less Container Load) / 20 Feet Container / 40 Feet Container / 45 Feet Container / High Cube Container / Open Top Container, By Air - Freighter Civil Passenger and Cargo Planes |
SA213 T9 Alloy Steel Seamless Tubes Material Test Certificate | Manufacturer Test Certificate As Per EN10204 3.1, 3.2 / Laboratory Test Certificate From NABL Approved Lab. / Under Third Party Inspection Agency Like SGS, TUV, DNV, LLOYDS, ABS ETC |
Standard Specification for Seamless Ferritic and Austenitic
Alloy-Steel Boiler, Superheater, and Heat-Exchanger Tubes
1.1 This specification covers seamless ferritic and austenitic
steel boiler, superheater, and heat-exchanger tubes, designated
Grades T91, TP304, etc. These steels are listed in Tables 1 and 2.
1.2 Grades containing the letter, H, in their designation, have
requirements different from those of similar grades not containing
the letter, H. These different requirements provide higher
creep-rupture strength than normally achievable in similar grades
without these different requirements.
1.3 The tubing sizes and thicknesses usually furnished to this
specification are 1/8 in. [3.2 mm] in inside diameter to 5 in. [127
mm] in outside diameter and 0.015 to 0.500 in. [0.4 to 12.7 mm],
inclusive, in minimum wall thickness or, if specified in the order,
average wall thickness. Tubing having other diameters may be
furnished, provided such Tubes comply with all other requirements
of this specification.
1.4 The values stated in either SI units or inch-pound units are to
be regarded separately as standard. Within the text, the SI units
are shown in brackets. The values stated in each system may not be
exact equivalents; therefore, each system shall be used
independently of the other. Combining values from the two systems
may result in non-conformance with the standard. The inch-pound
units shall apply unless the “M” designation of this specification
is specified in the order.
TABLE 1 Chemical Composition Limits, %A, for Low Alloy SteelA
Maximum, unless range or minimum is indicated. Where ellipses (…)
appear in this table, there is no requirement, and analysis for the
element need not be determined or reported.
B It is permissible to order T2 and T12 with a sulfur content of
0.045 max. See 16.3.
C Alternatively, in lieu of this ratio minimum, the material shall
have a minimum hardness of 275 HV in the hardened condition,
defined as after austenitizing and cooling to room temperature but
prior to tempering. Hardness testing shall be performed at
mid-thickness of the product. Hardness test frequency shall be two
samples of product per heat treatment lot and the hardness testing
results shall be reported on the material test report.
Composition, % | |||||||||||||
Grade | UNS Designation | Carbon | Manganese | Phosporus | Sulphur | Silicon | Nickel | Chromium | Molybdenum | Vanadium | Niobium | Aluminium | Other Elements |
T5 | K41545 | 0.15 | 0.30-0.60 | 0.025 | 0.025 | 0.50 | … | 4.00-6.00 | 0.45-0.65 | … | |||
T9 | K90941 | 0.15 | 0.30-0.60 | 0.025 | 0.025 | 0.03 | … | 1.00-1.50 | 0.90-1.10 | … | |||
T11 | K11597 | 0.05-0.15 | 0.30-0.60 | 0.025 | 0.025 | 0.50-1.00 | … | 1.00-1.50 | 0.44-0.65 | … | |||
T22 | K21590 | 0.05-0.15 | 0.30-0.60 | 0.025 | 0.025 | 0.50 | … | 1.90-2.60 | 0.87-1.13 | … | |||
T91 | K90901 | 0.07-0.14 | 0.30-0.60 | 0.02 | 0.010 | 0.20-0.50 | 0.4 | 8.0-9.5 | 0.85-1.05 | 0.18-0.25 | 0.06-0.10 | 0.02 | Ti 0.01 ZR 0.01 |
Hot rolled | Outside Diameter, mm | Tolerance, % |
OD≤101.6, WT≤2.4 | +40/-0 | |
OD≤101.6, 2.4<WT≤3.8 | +35/-0 | |
OD≤101.6, 3.8<WT≤4.6 | +33/-0 | |
OD≤101.6, WT>4.6 | +28/-0 | |
OD>101.6, 2.4<WT≤3.8 | +35/-0 | |
OD>101.6, 3.8<WT≤4.6 | +33/-0 | |
OD>101.6, WT>4.6 | +28/-0 | |
Cold Drawn | Outside Diameter, mm | Tolerance, % |
OD≤38.1 | +20/-0 | |
OD>38.1 | +22/-0 |
Hot rolled | Outside Diameter, mm | Tolerance, mm |
OD≤101.6 | +0.4/-0.8 | |
101.6<OD≤190.5 | +0.4/-1.2 | |
190.5<OD≤228.6 | +0.4/-1.6 | |
Cold Drawn | Outside Diameter, mm | Tolerance, mm |
OD<25.4 | ±0.10 | |
25.4≤OD≤38.1 | ±0.15 | |
38.1<OD<50.8 | ±0.20 | |
50.8≤OD<63.5 | ±0.25 | |
63.5≤OD<76.2 | ±0.30 | |
76.2≤OD≤101.6 | ±0.38 | |
101.6<OD≤190.5 | +0.38/-0.64 | |
190.5<OD≤228.6 | +0.38/-1.14 |