ASTM A213 is the standard that comes in seamless ferritic and austenitic alloy-steel boiler tubes, which are commonly used in different types of superheater and heat exchanger tubes. In that the Grade T92 is the most advanced ferritic-martensitic chromium-molybdenum-tungsten alloy in the T-grade family. In contrast T92 adopts a multi-strengthening composite approach that includes tungsten-molybdenum composite of solid-solution strengthening, nitrogen interstitial solid-solution strengthening, carbonitride dispersion precipitation strengthening through V, Nb, and N additions, and grain boundary strengthening through trace boron. This multi-mechanism design provides T92 with better creep-rupture strength than other grade at temperatures above 600 degrees C, and enables thinner wall sections and lower overall weight of the material used in high-pressure applications. At USA Piping Solution, we provide fully certified ASTM A213 T92 seamless tubes to power plants, refineries and EPC contractors throughout the United States, backed by full mill traceability, third-party inspection, and rapid domestic shipping.
ASTM A213 T92 Tube Specifications
| Specification Parameter | Details |
|---|---|
| Standard | ASTM A213 / ASME SA213 |
| Grade | T92 (NF616) |
| UNS Number | K92460 |
| Tube Type | Seamless (Hot Finished or Cold Finished) |
| Outside Diameter (OD) | 1/8 inch (3.2 mm) to 5 inch (127 mm) and above by agreement |
| Wall Thickness (WT) | 0.015 inch (0.4 mm) to 0.500 inch (12.7 mm), minimum or average |
| Standard Lengths | 5800 mm, 6000 mm, 6096 mm, 7315 mm, 11800 mm, 12000 mm, Max 16000 mm; U-bend available |
| Schedule | SCH 40, SCH 80, SCH 160, XXS and as per ASME B36.10 / B36.19 |
| Form | Round, Square, Rectangular, Hydraulic |
| End Condition | Plain End (PE), Beveled End (BE), Threaded End |
| Heat Treatment | Normalized above 1040 degrees C + Tempered above 730 degrees C |
| Testing | Hydrostatic / Eddy Current / UT / Radiography / Hardness / Flattening / Flaring |
ASTM A213 T92 Alloy Steel Pipes & Tubes Chemical Composition
|
Element |
Min % |
Max % |
Element |
Min % |
Max % |
Notes |
|---|---|---|---|---|---|---|
|
Carbon (C) |
0.07 |
0.13 |
Vanadium (V) |
0.15 |
0.25 |
|
|
Manganese (Mn) |
0.30 |
0.60 |
Niobium (Nb) |
0.04 |
0.09 |
|
|
Phosphorus (P) |
-- |
0.020 |
Nitrogen (N) |
0.03 |
0.07 |
|
|
Sulfur (S) |
-- |
0.010 |
Nickel (Ni) |
-- |
0.40 |
Max |
Mechanical Properties of Alloy Steel ASTM A213 T92 Tubes
| Property | Value (SI) | Value (Imperial) |
|---|---|---|
| Tensile Strength (Min) | 585 MPa | 85 ksi |
| Yield Strength (Min) | 415 MPa | 60.2 ksi |
| Elongation in 2 inch (Min) | 20% | 20% |
| Hardness (Max) | 250 HB | 99 HRB |
| Max Working Temperature | 650 degrees C | 1200 degrees F |
| Density | 7.75 g/cm3 | 0.280 lb/in3 |
Alloy Steel T92 Tubing Mechanical & Physical Properties
| Physical Property | Value | Condition |
|---|---|---|
| Density | 7.75 g/cm3 | Room Temperature |
| Elastic Modulus | 220 GPa (approx.) | Room Temperature |
| Thermal Conductivity | 26-28 W/m.K | At 600 degrees C |
| Thermal Expansion Coefficient | 12.5 x 10^-6/K | 20 to 600 degrees C |
| Specific Heat Capacity | 500-520 J/kg.K | Room Temperature |
| Magnetic Permeability | Ferromagnetic | Ferritic-Martensitic |
Equivalent Grades of ASTM A213 T92 Tubes
| ASTM | ASME | UNS | EN / DIN | Trade Name |
|---|---|---|---|---|
| A213 T92 | SA213 T92 | K92460 | X10CrWMoVNb9-2 | NF616 (Nippon Steel) |
Types of ASTM A213 T92 Tubes
T91 vs T92 Tube Comparison
| Parameter | ASTM A213 T91 Tube | ASTM A213 T92 Tube |
|---|---|---|
| Nominal Composition | 9Cr-1Mo-V | 9Cr-0.5Mo-1.8W-V-Nb |
| Key Strengthening Element | Molybdenum (Mo) | Tungsten (W) + Microalloying (V, Nb, B, N) |
| Creep Strength | High | Superior (20-30% higher than T91) |
| Minimum Tensile Strength | 585 MPa (85 ksi) | 585 MPa (85 ksi) |
| Minimum Yield Strength | 415 MPa (60 ksi) | 415 MPa (60 ksi) |
| Maximum Service Temperature | ~600 degrees C | Up to 650 degrees C |
| Wall Thickness Requirement | Thicker sections required | Allows thinner wall design |
| Oxidation Resistance | Good | Better at elevated temperatures |
| Weldability | Good (controlled procedures required) | Slightly more controlled due to alloy complexity |
| Cost Level | Moderate | Higher (due to W and alloying elements) |
| Typical Applications | Subcritical boilers, headers, piping | Supercritical boilers, ultra-supercritical units, high-pressure systems |
| When to Select | Standard high-temp service | When higher efficiency, longer life, and reduced thickness are required |
ASTM A213 Alloy Steel T92 Tubes Outside Diameter & Tolerances
| Manufacturing Process | Outside Diameter (mm) | Tolerance (mm) |
|---|---|---|
| Hot Rolled | OD <= 101.6 | +0.4 / -0.8 |
| Hot Rolled | 101.6 < OD <= 190.5 | +0.4 / -1.2 |
| Hot Rolled | 190.5 < OD <= 228.6 | +0.4 / -1.6 |
| Cold Drawn | OD < 25.4 | +/-0.10 |
| Cold Drawn | 25.4 <= OD <= 38.1 | +/-0.15 |
| Cold Drawn | 38.1 < OD < 50.8 | +/-0.20 |
| Cold Drawn | 50.8 <= OD < 63.5 | +/-0.25 |
| Cold Drawn | 63.5 <= OD < 76.2 | +/-0.30 |
| Cold Drawn | 76.2 <= OD <= 101.6 | +/-0.38 |
| Cold Drawn | 101.6 < OD <= 190.5 | +0.38 / -0.64 |
| Cold Drawn | 190.5 < OD <= 228.6 | +0.38 / -1.14 |
Wall Thickness and Tolerance Chart of ASTM A213 T92 Tubes
| Manufacturing Process | Condition (OD & WT) | Tolerance (%) |
|---|---|---|
| Hot Rolled | OD <= 101.6, WT <= 2.4 | +40 / -0 |
| Hot Rolled | OD <= 101.6, 2.4 < WT <= 3.8 | +35 / -0 |
| Hot Rolled | OD <= 101.6, 3.8 < WT <= 4.6 | +33 / -0 |
| Hot Rolled | OD <= 101.6, WT > 4.6 | +28 / -0 |
| Hot Rolled | OD > 101.6, 2.4 < WT <= 3.8 | +35 / -0 |
| Hot Rolled | OD > 101.6, 3.8 < WT <= 4.6 | +33 / -0 |
| Hot Rolled | OD > 101.6, WT > 4.6 | +28 / -0 |
| Cold Drawn | OD <= 38.1 | +20 / -0 |
| Cold Drawn | OD > 38.1 | +22 / -0 |
ASTM A213 T92 Tubes Sizes, Dimensions & Weight Chart
| Size (OD) | Thickness (in) | ID (in) | Lbs per Foot | Price (GBP) |
|---|---|---|---|---|
| 3/16" | 0.028 | 0.132 | 0.048 | -- |
| 1/4" | 0.028 | 0.194 | 0.067 | 8.15 |
| 1/4" | 0.035 | 0.180 | 0.080 | 4.52 |
| 1/4" | 0.049 | 0.152 | 0.105 | 7.09 |
| 1/4" | 0.058 | 0.134 | 0.119 | 16.94 |
| 1/4" | 0.065 | 0.120 | 0.128 | 10.73 |
| 5/16" | 0.028 | 0.257 | 0.085 | 9.72 |
| 5/16" | 0.035 | 0.243 | 0.104 | 6.71 |
| 5/16" | 0.049 | 0.215 | 0.138 | 8.71 |
| 3/8" | 0.028 | 0.319 | 0.104 | 6.59 |
| 3/8" | 0.035 | 0.305 | 0.127 | 5.45 |
| 3/8" | 0.049 | 0.277 | 0.171 | 5.65 |
| 1/2" | 0.028 | 0.444 | 0.141 | 6.01 |
| 1/2" | 0.035 | 0.430 | 0.174 | 4.82 |
| 1/2" | 0.049 | 0.402 | 0.236 | 5.45 |
| 3/4" | 0.028 | 0.694 | 0.216 | 7.22 |
| 3/4" | 0.035 | 0.680 | 0.267 | 4.57 |
| 1" | 0.028 | 0.944 | 0.291 | 8.46 |
| 1" | 0.035 | 0.930 | 0.361 | 4.95 |
ASTM A213 T92 Alloy Steel Tube Applications
- Food Processing Industry
- Fabrication Industry
- Oil and Gas Industry
- Chemical Industry
- Plumbing
- General Purpose Applications
- Heating Water Supply Systems
- Power Plant
- Paper & Pulp Industry
Price List of ASTM A213 T92 Seamless Alloy Steel Tubes
| Product Description | Price Range (USD) | Unit |
|---|---|---|
| T92 Seamless Alloy Steel Tubes | 1 - 5 | Per Kilogram |
| Seamless Tube ASTM A213 T92 | 700 - 3300 | Per Ton |
| Alloy Steel Seamless Tubes T92 | 700 - 3000 | Per Ton |
| ASTM A213 T92 High Pressure Tubes | 530 - 600 | Per Ton |
| SA213 T92 Seamless Tubes | 430 - 600 | Per Ton |
| T92 Seamless Tubes (Manufacturer Supply) | 1300 - 3600 | Per Metric Ton |
| ASTM A213 Gr. T92 Chrome Moly Tubes | 300 - 1300 | Per Ton |
Note: Price is subject to change without any prior notice.
Related Alloy Steel Pipe Grades
- ASTM A335 P91 Pipes
- ASTM A335 P9 Pipes
- ASTM A335 P22 Pipes
- ASTM A335 P11 Pipes
- ASTM A335 P5 Pipes
- Boiler Tubes and Pipes
- Alloy Steel Pipes and Tubes
Frequently Asked Questions
What is ASTM A213 material?
ASTM A213 is a standard for seamless alloy steel and stainless steel tubes used in high-temperature applications like boilers, superheaters, and heat exchangers.
What is the composition of T92 material?
T92 is a 9% chromium alloy steel that contains carbon, manganese, chromium, molybdenum, tungsten, vanadium, niobium, and small amounts of nitrogen and boron for high strength and heat resistance.
What is the difference between ASTM A213 T92 and ASME SA213 T92?
There is no material difference. ASTM A213 T92 is the standard specification published by ASTM International, while ASME SA213 T92 is the identical specification adopted by the American Society of Mechanical Engineers for use in its Boiler and Pressure Vessel Code. For most procurement and design purposes, the two designations are used interchangeably.
What is the UNS designation for T92 alloy steel?
The UNS (Unified Numbering System) designation for ASTM A213 Grade T92 is K92460.
How does T92 differ from T91?
T92 contains reduced molybdenum (0.3 to 0.6% vs 0.85 to 1.05% in T91) and adds tungsten (1.5 to 2.0%) and boron (0.001 to 0.006%). These additions provide superior creep-rupture strength at temperatures above 600 degrees C, allowing T92 to operate reliably at up to 650 degrees C versus approximately 630 degrees C for T91. T92 can also allow thinner tube wall sections due to higher allowable stresses, reducing material weight in supercritical boiler construction.
What heat treatment is required for ASTM A213 T92 tubes?
Per the ASTM A213 standard, T92 tubes must be normalized at a minimum temperature of 1040 degrees C (1900 degrees F) and tempered at a minimum of 730 degrees C (1350 degrees F). This normalize-and-temper sequence develops the martensitic microstructure that gives T92 its characteristic creep strength and mechanical properties.
Can T92 replace T91 tubes?
In many supercritical and ultra-supercritical boiler applications, T92 is the preferred alternative or upgrade to T91. T92 offers better creep strength above 600 degrees C, potentially allowing thinner walls and weight reduction. It can also partially replace austenitic grades TP304H and TP347H in subcritical boilers, eliminating dissimilar metal weld joints.