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ASME SA213 Seamless Ferritic and Austenitic Alloy Steel Tube For Boiler, Superheater, and Heat-Exchanger Service

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Product Spotlights

ASME SA213 Seamless Ferritic and Austenitic Alloy Steel Tube
For Boiler, Superheater, and Heat-Exchanger Service – Grades T5, T9, T11, T12, T22, T91, TP304, TP316, TP321, TP347
ASME Boiler & Pressure Vessel Code Section II
Negotiable MOQ: 1 Metric Ton (Price negotiable depending on order volume and customization)
Key Specifications
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Type:
Seamless
Warranty:
1 Y
Technique:
Cold Drawn
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Wuxi Hengzhihui Metal Materials Co., Ltd.
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Type Seamless
Warranty 1 Y
Technique Cold Drawn
Surface Treatment Oiled
Usage Pipeline Transport, Boiler Pipe, Hydraulic/Automobile Pipe, Oil/Gas Drilling, Food/Beverage/Dairy Products, Machinery Industry, Chemical Industry, Mining, Construction & Decoration, Special Purpose, Other
Material Alloy Steel
After-sales Service Y
Section Shape Round
Transport Package Hexagonal or square bundle
Specification 6-256mm
Trademark N/A
Origin CHINA

ASME SA213 Seamless Ferritic and Austenitic Alloy Steel Tube

For Boiler, Superheater, and Heat-Exchanger Service – Grades T5, T9, T11, T12, T22, T91, TP304, TP316, TP321, TP347

ASME Boiler & Pressure Vessel Code Section II

Product Overview

ASME SA213 / ASTM A213 seamless ferritic and austenitic alloy steel tubes are specifically designed for boiler, superheater, and heat-exchanger service in accordance with the ASME Boiler and Pressure Vessel Code Section II. These tubes operate at significantly higher temperatures than carbon steel tubes (SA179/SA192/SA210) , making them essential for high-efficiency supercritical and ultra-supercritical power plants where steam temperatures exceed 1,000°F (538°C).

Ferritic Alloy Grades (Chrome-Moly):

  • T5 (5Cr-0.5Mo) – 5% Chrome, 0.5% Molybdenum

  • T9 (9Cr-1Mo) – 9% Chrome, 1% Molybdenum

  • T11 (1.25Cr-0.5Mo) – Low chrome alloy for moderate temperatures

  • T12 (1Cr-0.5Mo) – Standard chrome-moly for 1,000-1,100°F service

  • T22 (2.25Cr-1Mo) – High creep strength, excellent for superheaters

  • T91 (9Cr-1Mo-V) – Enhanced creep strength, up to 1,200°F service

Austenitic Stainless Grades:

  • TP304H/TP304 – 18Cr-8Ni, excellent oxidation resistance up to 1,500°F

  • TP309H/TP310H – Higher chromium for extreme oxidation

  • TP316H/TP316 – 16Cr-12Ni-2Mo, better pitting resistance

  • TP321H – Titanium stabilized, good for high-temperature service

  • TP347H – Columbium stabilized, excellent creep strength

✅ ASME SA213 certified – Compliant with ASME Boiler & Pressure Vessel Code Section II
✅ Seamless construction – No weld seam – essential for high temperature integrity
✅ Ferritic grades – Chrome-Moly alloys for 900-1,200°F service
✅ Austenitic grades – Stainless steels for 1,200-1,650°F service
✅ H-grade variants – Higher carbon for superior creep-rupture strength
✅ 100% hydrostatic and NDT tested – Guaranteed integrity
✅ EN 10204 Type 3.1 MTC provided with full traceability
✅ Factory direct | Stock available for common grades (T11, T22, T91, TP304H, TP347H)

Key Specifications

Parameter Details
Standard ASME SA213 / ASTM A213
ASME Code Boiler & Pressure Vessel Code Section II
Product Type Seamless Ferritic and Austenitic Alloy Steel Tube
Applications Boilers, Superheaters, Reheaters, Heat Exchangers
Ferritic Grades T5, T9, T11, T12, T22, T91, T92, T122
Austenitic Grades TP304, TP304H, TP309H, TP310H, TP316, TP316H, TP321H, TP347H
OD Range 1/8″ – 5″ (3.2mm – 127mm)
Wall Thickness 0.015 – 0.500 inch (0.4 – 12.7 mm)
Length 3m – 12m (fixed or random)
Surface Finish Black / Bare / Oiled (ferritic); Bright annealed (austenitic)
End Finish Plain / Beveled / Threaded

Ferritic Alloy Grades – ASME SA213

Grade Cr (%) Mo (%) Other Max Temp (°F) Max Temp (°C) Typical Application
T5 4.0-6.0 0.45-0.65 — 1,200 650 High temperature service
T9 8.0-10.0 0.90-1.10 — 1,200 650 Oxidation resistance
T11 1.0-1.5 0.44-0.65 — 1,200 650 General superheater service
T12 0.8-1.25 0.44-0.65 — 1,200 650 Economical chrome-moly
T22 2.0-2.5 0.87-1.13 — 1,125 605 High creep strength superheater
T91 8.0-9.5 0.85-1.05 V 0.18-0.25 1,200 650 Ultra-supercritical boilers

ASME SA213 ferritic alloys are chrome-molybdenum (Cr-Mo) steels that provide:

  • Graphitization resistance – Prevents carbon precipitation at high temperature

  • Creep strength – Maintains dimensional stability under long-term stress

  • Oxidation resistance – Forms protective chromium oxide scale

Austenitic Stainless Grades – ASME SA213

Grade Cr (%) Ni (%) Mo (%) Other Max Temp (°F) Max Temp (°C) Typical Application
TP304/TP304H 18.0-20.0 8.0-11.0 — — 1,500 815 General high temperature service
TP309H 22.0-24.0 12.0-15.0 — — 1,700 925 Extreme oxidation
TP310H 24.0-26.0 19.0-22.0 — — 1,850 1,010 Highest temperature
TP316/TP316H 16.0-18.0 10.0-14.0 2.0-3.0 — 1,500 815 Pitting resistance
TP321H 17.0-19.0 9.0-12.0 — Ti 5×C min 1,500 815 Titanium stabilized
TP347H 17.0-19.0 9.0-12.0 — Nb 8×C min 1,500 815 Columbium stabilized

💡 H-grade (High Carbon) variants – Provide superior creep-rupture strength compared to standard grades – essential for superheater and reheater service at elevated temperatures.

Chemical Composition – Ferritic Grades (ASME SA213)

Grade C max Mn max P max S max Si max Cr Mo
T11 0.15 0.30-0.60 0.025 0.025 0.50-1.00 1.00-1.50 0.44-0.65
T12 0.15 0.30-0.60 0.025 0.025 0.50 max 0.80-1.25 0.44-0.65
T22 0.15 0.30-0.60 0.025 0.025 0.50 max 2.00-2.50 0.87-1.13
T91 0.07-0.14 0.30-0.60 0.020 0.010 0.20-0.50 8.00-9.50 0.85-1.05

Chemical Composition – Austenitic Grades (ASME SA213)

Grade C Mn max P max S max Si max Cr Ni Mo Other
TP304H 0.04-0.10 2.00 0.045 0.030 0.75 18.0-20.0 8.0-11.0 — —
TP316H 0.04-0.10 2.00 0.045 0.030 0.75 16.0-18.0 10.0-14.0 2.0-3.0 —
TP321H 0.04-0.10 2.00 0.045 0.030 0.75 17.0-19.0 9.0-12.0 — Ti: 5×C min
TP347H 0.04-0.10 2.00 0.045 0.030 0.75 17.0-19.0 9.0-13.0 — Nb: 8×C min

Mechanical Properties – Ferritic Grades

Grade Tensile Strength (MPa) Yield Strength (MPa) Elongation (%)
T11 ≥415 ≥205 ≥30
T12 ≥415 ≥205 ≥30
T22 ≥415 ≥205 ≥30
T91 ≥585 ≥415 ≥20

Mechanical Properties – Austenitic Grades

Grade Tensile Strength (MPa) Yield Strength (MPa) Elongation (%)
TP304H ≥515 ≥205 ≥35
TP316H ≥515 ≥205 ≥35
TP321H ≥515 ≥205 ≥35
TP347H ≥515 ≥205 ≥35

💡 Austenitic stainless steels maintain higher strength at elevated temperatures – TP304H retains approximately 75% of its room temperature strength at 1,200°F.

Grade Selection Guide by Operating Temperature

Operating Temp (°F) Operating Temp (°C) Recommended Grade Material Type
900-1,000 482-538 T11, T12 Ferritic (Cr-Mo)
1,000-1,100 538-593 T22 Ferritic (2.25Cr-1Mo)
1,100-1,200 593-650 T91 (most popular) Ferritic (9Cr-1Mo-V)
1,200-1,400 650-760 TP304H, TP316H Austenitic (18-8 SS)
1,400-1,600 760-871 TP309H, TP310H Austenitic (High Cr SS)
>1,600 >871 TP310H Austenitic (25Cr-20Ni)

💡 T91 is the most popular grade for modern high-efficiency supercritical power plants – recommended for use at temperatures up to 1,200°F (650°C).

Key Advantages – ASME SA213 Alloy Tubes

Feature Benefit for Boiler/Superheater Service
Ferritic (Cr-Mo) construction Graphitization resistance, creep strength up to 1,200°F
Austenitic (SS) construction Excellent oxidation resistance up to 1,650°F
Seamless No weld seam – critical for high temperature creep resistance
H-grade variants Higher carbon – superior creep-rupture strength
ASME Code certified Acceptable for ASME Section I (Power Boilers) stamping
100% NDT tested Eddy current or ultrasonic – detects surface defects
Wide temperature range 900°F to 1,650°F – covers all high temperature sections
Good weldability Standard procedures (preheat for ferritic, no preheat for austenitic)
Full traceability EN 10204 3.1 MTC with heat number

Boiler and Superheater Applications – ASME SA213

Boiler Section Temperature Recommended Grade Why
High temperature superheater 1,050-1,150°F T91 Highest creep strength at 1,200°F
Final superheater (ultra-supercritical) 1,150-1,250°F TP304H, TP347H Oxidation resistance + strength
Reheater (hot section) 1,050-1,150°F T91, TP304H Creep + oxidation resistance
High temperature header 1,000-1,100°F T22 High creep strength
Heat exchanger (high temp) 900-1,100°F T11, T12 Economical chrome-moly
Nuclear steam generator 600-900°F T22 ASME Section III compliant
Reformer / Cracking furnace 1,500-1,800°F TP310H Extreme oxidation resistance

Temperature Capability – Maximum Allowable Stress Values

Grade 900°F 1000°F 1100°F 1200°F 1300°F
T11 12.5 ksi 8.8 ksi 5.3 ksi 3.0 ksi —
T22 13.6 ksi 10.0 ksi 6.6 ksi 3.9 ksi —
T91 19.5 ksi 15.0 ksi 10.2 ksi 6.5 ksi 4.0 ksi
TP304H 19.5 ksi 15.0 ksi 11.2 ksi 8.6 ksi 6.6 ksi

💡 T91 provides allowable stress values approximately 1.5-2 times higher than T22 at 1,100-1,200°F.

Quality Testing & Inspection – ASME SA213

Test Method Standard Coverage Importance
Hydrostatic Test Water pressure ASME SA213 100% Leak-free high temperature service
Eddy Current (ECT) Non-destructive ASTM E309 100% Surface defect detection
Ultrasonic (UT) Optional ASTM E213 On request Internal defect detection
Tensile Test Properties ASTM E8 Per heat Strength verification
Hardness Test Rockwell B/C ASTM E18 Per batch Consistent properties
Flattening Test Ductility ASME SA213 Per lot Bendability
Flaring Test Expansion ASME SA213 Per lot End integrity
Dimensional Micrometer ASME SA213 100% Tube-to-baffle fit

💡 100% eddy current testing is critical for superheater tubes – surface defects can initiate creep failure at high temperatures.

Heat Treatment Requirements – ASME SA213

Material Type Heat Treatment Required Temperature Range
Ferritic (T5, T9, T11, T12, T22) Fully annealed or isothermal annealed 1,300-1,450°F
Ferritic (T91) Normalize + Temper 1,900-1,950°F + 1,350-1,450°F
Austenitic (TP304H, TP316H, TP321H, TP347H) Solution annealed + quench 1,900-2,100°F

💡 Solution annealing is critical for austenitic grades – prevents sensitization and intergranular corrosion.

Mill Test Certificate – ASME SA213

  • ASME SA213 Certificate of Compliance – Standard

  • EN 10204 Type 3.1 MTC – Provided with heat number

  • EN 10204 Type 3.2 – Available upon request (third-party: SGS, BV, TUV, DNV)

  • Traceability: Full traceability from melt to finished tube

  • Test report includes: Heat analysis, tensile results, hardness, flattening/flaring

Processing Services – ASME SA213 Tubes

Service Description Applicable Grades
Precision cutting Cut to exact length All
Beveling For weld prep – 30-37.5° All
Bending Cold or hot bending All (larger radius for ferritic)
Heat treatment Solution annealing, stress relief Austenitic
End finishing Plain, beveled, threaded All

Packaging & Shipping – ASME SA213 Tubes

Item Details
Packaging Hexagonal bundles with steel strapping
Protection Anti-rust oil + plastic end caps (ferritic)
Austenitic Plastic caps + protective paper
Marking Stencil: Grade, size, heat number, ASME SA213
Lead time 15-25 days (stock grades T11, T22, T91, TP304H, TP347H), 30-45 days (other grades)
Port Tianjin / Shanghai / Guangzhou

Why Choose Our ASME SA213 Alloy Tubes?

Advantage Description
High temperature specialist Dedicated line for ferritic and austenitic alloy tubes
Full grade range T11, T22, T91, TP304H, TP347H – one-stop sourcing
T91 in stock Most popular supercritical boiler grade – ready to ship
ASME Code certified Acceptable for ASME Section I and Section III stamping
100% tested Eddy current + hydrostatic on every tube
Full traceability EN 10204 3.1 MTC with heat number
H-grade available Superior creep-rupture strength for superheaters
Global export Shipped to power plants worldwide

Contact for Quote – ASME SA213 Alloy Tubes

Please provide the following details:

  • Grade : T11 / T22 / T91 / TP304H / TP347H / Other _______

  • OD (inch / mm) : _______

  • WT (mm) : _______

  • Length (m) : _______

  • Quantity : _______ (pieces / meters / tons)

  • Application : Superheater / Reheater / Heat Exchanger / Header

  • Operating Temperature : _______ °F / °C

  • Inspection : Standard / Third-party (SGS/BV/TUV/DNV)

📧 Email: yjhtrade@gmail.com
📞 WhatsApp: +86 15106174543
🌐 Website:

Reply within 24 hours.

FAQ – ASME SA213 Alloy Tubes

Q1: What is ASME SA213 used for?
A: ASME SA213 seamless alloy tubes are used for high temperature boiler, superheater, reheater, and heat-exchanger service where carbon steel tubes (SA179/SA192/SA210) cannot operate.

Q2: What is the difference between ferritic and austenitic grades?
A: Ferritic (T-series) – Chrome-Moly alloys, up to 1,200°F, lower cost. Austenitic (TP-series) – Stainless steels, up to 1,650°F, higher corrosion/oxidation resistance, higher cost.

Q3: What is the most popular grade for supercritical boilers?
A: T91 (9Cr-1Mo-V) is the most popular grade for modern high-efficiency supercritical power plants – operates up to 1,200°F (650°C).

Q4: What is the difference between T22 and T91?
A: T22 (2.25Cr-1Mo) is for 1,100-1,125°F service. T91 (9Cr-1Mo-V) is for 1,200°F service with approximately double the creep strength of T22.

Q5: What is the difference between standard grades and H-grades?
A: H-grade (e.g., TP304H vs TP304) has higher carbon content (0.04-0.10% vs ≤0.08%) and higher creep-rupture strength for elevated temperature service.

Q6: What is T91 used for?
A: T91 is used for high temperature superheater and reheater tubes in subcritical, supercritical, and ultra-supercritical boilers at temperatures up to 1,200°F (650°C).

Q7: Can ASME SA213 tubes be welded?
A: Yes – Ferritic grades require preheat (300-400°F) . Austenitic grades do not require preheat but require low heat input.

Q8: What testing is required for ASME SA213 tubes?
A: 100% hydrostatic testing and 100% eddy current (ECT) or ultrasonic (UT) testing per ASME SA213.

Q9: Do you provide third-party inspection?
A: Yes. SGS, BV, TUV, DNV, or any customer-specified agency.

Q10: Do you offer free samples?
A: 30cm sample available for common grades (T11, T22, T91, TP304H, TP347H). Shipping fee applies.

Related Products – High Temperature Tubes

  • ASME SA213 – Alloy steel tubes (this product)

  • ASME SA335 – Alloy steel pipe (P11, P22, P91)

  • ASME SA210 – Medium carbon steel boiler tubes

  • ASME SA192 – High pressure carbon steel boiler tubes

  • ASME SA179 – Heat exchanger tubes

Tags: ASME SA213 SA213 T91 SA213 T22 SA213 TP304H SA213 TP347H Superheater Tube Alloy Steel Tube Ferritic Steel Austenitic Stainless Power Plant Boiler Tube ASME Code

Quick Reference – Grade Selection by Temperature

Temp (°F) Temp (°C) Ferritic Grade Austenitic Grade
900-1,000 482-538 T11, T12 —
1,000-1,100 538-593 T22 —
1,100-1,200 593-650 T91 (most popular) TP304H
1,200-1,400 650-760 — TP304H, TP316H, TP321H
1,400-1,600 760-871 — TP309H, TP310H
>1,600 >871 — TP310H

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Product Tags: ASME SA213 Heat-Exchanger Tube , Alloy Steel Tube , Heat-Exchanger Tube

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