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Help CenterASME SA210 Seamless Medium-Carbon Steel Boiler and Superheater Tube Grades A-1 & C
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ASME SA210 Seamless Medium-Carbon Steel Boiler and Superheater Tube
Grades A-1 & C – For High Temperature Boiler and Superheater Service
ASME Boiler & Pressure Vessel Code Section II
Product Overview
ASME SA210 / ASTM A210 seamless medium-carbon steel tubes are specifically designed for boiler and superheater service in accordance with the ASME Boiler and Pressure Vessel Code Section II. These tubes offer higher strength than standard carbon steel tubes (SA179/SA192) , making them ideal for higher temperature and pressure boiler applications .
Available Grades:
Grade A-1 – Standard medium-carbon steel for general boiler and superheater service
Grade C – Higher carbon content for improved strength, designed for higher-pressure and higher-temperature service
✅ ASME SA210 certified – Compliant with ASME Boiler & Pressure Vessel Code
✅ Seamless construction – No weld seam – zero leak risk
✅ Higher strength than SA179/SA192 – Grade C offers ≥485 MPa tensile strength
✅ 100% hydrostatic & eddy current tested
✅ EN 10204 Type 3.1 MTC provided
✅ Factory direct | Stock available | Fast delivery
Key Specifications
| Parameter | Details |
|---|---|
| Standard | ASME SA210 / ASTM A210 |
| Type | Seamless – Medium-Carbon Steel |
| Grades | A-1 and C |
| OD Range | 1/2″ – 5″ (12.7mm – 127mm) |
| Wall Thickness | 0.9mm – 12.7mm (0.035″ – 0.500″) |
| Length | 3m – 12m (fixed or random) |
| Surface Finish | Black / Bare / Oiled |
| End Finish | Plain / Beveled / Threaded |
📌 Important Note: This specification is not suitable for safe ending by forge welding .
Chemical Composition – ASME SA210 Grades
| Element | Grade A-1 | Grade C |
|---|---|---|
| Carbon (C) Max | 0.27% | 0.35% |
| Manganese (Mn) | ≤0.93% | 0.29% – 1.06% |
| Silicon (Si) Min | 0.10% | 0.10% |
| Phosphorus (P) Max | 0.035% | 0.035% |
| Sulfur (S) Max | 0.035% | 0.035% |
📌 Note for Grade A-1: Each reduction of 0.01% carbon below 0.27% permits an increase of manganese of 0.06% above 0.93%, up to a maximum of 1.35% .
Mechanical Properties – ASME SA210 Grades
| Property | Grade A-1 | Grade C |
|---|---|---|
| Tensile Strength | ≥415 MPa (60,200 psi) | ≥485 MPa (70,300 psi) |
| Yield Strength | ≥255 MPa (37,000 psi) | ≥275 MPa (39,900 psi) |
| Elongation | ≥30% | ≥30% |
| Hardness (HRB) | ≤79 HRB / 143 HB | ≤89 HRB / 179 HB |
ASME SA210 vs ASME SA179/SA192 – Comparison for Boiler Tubes
| Feature | ASME SA179 | ASME SA192 | ASME SA210 A-1 | ASME SA210 Grade C |
|---|---|---|---|---|
| Primary Application | Heat exchangers | High pressure boilers | Boilers & superheaters | High temp superheaters |
| Material Type | Low carbon | Low carbon | Medium carbon | Medium carbon (higher) |
| Tensile Strength | ≥325 MPa | ≥325 MPa | ≥415 MPa | ≥485 MPa |
| Yield Strength | ≥180 MPa | ≥180 MPa | ≥255 MPa | ≥275 MPa |
| Hardness (HRB) | ≤72 | ≤77 | ≤79 | ≤89 |
| Max OD | 3″ | 7″ | 5″ | 5″ |
💡 Key advantage: SA210 offers significantly higher strength than SA179/SA192, making it the preferred choice for superheater and high-temperature boiler applications .
Grade A-1 vs Grade C – Selection Guide
| Feature | Grade A-1 | Grade C |
|---|---|---|
| Carbon Content | ≤0.27% | ≤0.35% (higher) |
| Strength Level | Standard medium-carbon | Higher strength |
| Typical Application | General boiler tubes, economizers | Superheaters, high-pressure sections |
| Cost Level | $ | $$ |
| Approximate GB Equivalent | 20G | 15CrMoG / 20G (higher requirement) |
💡 Selection tip: Use Grade A-1 for general boiler service. Use Grade C for superheater sections requiring higher strength at elevated temperatures .
Applications – Boiler and Superheater Service
| Industry | Application | Recommended Grade |
|---|---|---|
| Power Generation | Superheater tubes | Grade C |
| Power Generation | Reheater tubes | Grade C |
| Power Generation | Boiler water wall tubes | Grade A-1 |
| Power Generation | Economizer tubes | Grade A-1 |
| Industrial Boilers | Steam boilers (medium pressure) | Grade A-1 |
| Refineries | Process heater tubes | Grade C |
| Petrochemical | High-temperature heat exchangers | Grade C |
| HRSG (Heat Recovery Steam Generator) | Evaporator tubes | Grade A-1 |
Available Sizes – Boiler and Superheater Tubes (Stock)
| OD (inch) | OD (mm) | WT (mm) | Typical BWG | Typical Grade |
|---|---|---|---|---|
| 1/2″ | 12.7 | 1.65 – 2.11 | 16-18 BWG | A-1, C |
| 3/4″ | 19.1 | 1.65 – 2.41 | 16-18 BWG | A-1, C |
| 1″ | 25.4 | 2.11 – 3.40 | 14-18 BWG | A-1, C |
| 1-1/4″ | 31.8 | 2.41 – 3.96 | 12-18 BWG | A-1, C |
| 1-1/2″ | 38.1 | 2.77 – 4.19 | 12-16 BWG | A-1, C |
| 2″ | 50.8 | 3.40 – 5.16 | 10-16 BWG | C (most common) |
| 2-1/2″ | 63.5 | 3.96 – 5.59 | 10-14 BWG | C |
| 3″ | 76.2 | 4.19 – 6.35 | 10-14 BWG | C |
| 4″ | 101.6 | 4.78 – 7.14 | 8-12 BWG | C |
| 5″ | 127.0 | 5.59 – 8.56 | 8-12 BWG | C (on request) |
💡 Common superheater size: 2″ OD × 4-6mm WT, Grade C is the most popular for superheater applications .
Dimensional Tolerances – ASME SA210
Cold Drawn Tubes (OD Tolerance):
| OD (mm) | Tolerance (mm) | Standard |
|---|---|---|
| ±0.10 | ASME SA210 | |
| 25.4 – 38.1 | ±0.15 | ASME SA210 |
| 38.1 – 50.8 | ±0.20 | ASME SA210 |
| 50.8 – 63.5 | ±0.25 | ASME SA210 |
| 63.5 – 76.2 | ±0.30 | ASME SA210 |
| 76.2 – 101.6 | ±0.38 | ASME SA210 |
| 101.6 – 127.0 | +0.38/-0.64 | ASME SA210 |
Cut Length Tolerances:
| Manufacturing Method | Over Tolerance | Under Tolerance |
|---|---|---|
| Cold-finished ( | +3mm | 0 |
| Cold-finished (≥2″ OD) | +5mm | 0 |
| Hot-finished (all sizes) | +5mm | 0 |
Quality Testing & Inspection – Boiler and Superheater Tubes
| Test | Method | Standard | Coverage |
|---|---|---|---|
| Hydrostatic Test | Water pressure | ASME SA210 | 100% |
| Eddy Current Test (ECT) | Non-destructive | ASTM E309 | 100% |
| Tensile Test | Mechanical properties | ASTM E8 | Per heat (2 tubes per lot) |
| Flattening Test | Ductility verification | ASME SA210 | Each end of 1 tube per lot |
| Flaring Test | Expansion capability | ASME SA210 | Each end of 1 tube per lot |
| Hardness Test | Rockwell B / Brinell | ASTM E18 | 2 tubes per lot |
| Visual & Dimensional | Micrometer / Caliper | ASME SA210 | 100% |
Lot Definition: A lot shall consist of the following number of tubes of the same size and wall thickness from the same heat of steel:
≤50 tubes – Lot size: entire order
>50 tubes – Lot size: 50 tubes
Mill Test Certificate
EN 10204 Type 3.1 – Standard (in-house inspection)
EN 10204 Type 3.2 – Available upon request (third-party: SGS, BV, TUV, DNV)
ASME SA210 Certificate of Compliance – Available
Full traceability from melt to finished tube
Heat analysis report for each batch
Mechanical test report including tensile, flattening, flaring, and hardness
Processing Services for Boiler and Superheater Fabrication
| Service | Description |
|---|---|
| Cutting | Precision cutting to exact length (±1mm) |
| Beveling | For welding preparation (30°-37.5°) |
| Bending | Cold or hot bending for superheater coils |
| Heat treatment | Normalizing, stress relieving (may be required for Grade C) |
| Surface treatment | Oiling, painting, galvanizing |
Packaging & Shipping – Boiler and Superheater Tubes
| Item | Details |
|---|---|
| Packaging | Hexagonal or square bundles (small OD) |
| Protection | Anti-rust oil + plastic end caps |
| Marking | Stencil / spray with grade (A-1/C), size, heat number, standard |
| Lead time | 7–15 days (stock sizes), 20–30 days (custom) |
| Port | Tianjin / Shanghai / Guangzhou |
Why Choose Our ASME SA210 High-Strength Boiler Tubes?
| Advantage | Description |
|---|---|
| Higher strength than SA179/SA192 | Grade C tensile ≥485 MPa for demanding superheater applications |
| ASME Code certified | Compliant with ASME Boiler & Pressure Vessel Code Section II |
| Medium-carbon specialist | Dedicated production line for medium-carbon boiler tubes |
| Full traceability | EN 10204 3.1 MTC with heat number |
| 100% tested | Hydrostatic + eddy current + flattening + flaring on every lot |
| Stock availability | Grade A-1 and Grade C in common superheater sizes |
| In-house processing | Cutting, beveling, bending |
| Global export | Shipped to power plants and boiler manufacturers worldwide |
International Standard Cross-Reference
| ASME SA210 | ASTM Equivalent | Approximate GB/T 5310 Equivalent |
|---|---|---|
| Grade A-1 | A210 Grade A-1 | 20G (similar) |
| Grade C | A210 Grade C | 15CrMoG (for high temp) or 20G (for strength) |
📌 Important note: Grade C has higher carbon content (0.35% max) than 15CrMoG (0.12-0.18%), but 15CrMoG contains Cr and Mo for better high-temperature performance. SA210 Grade C is not a direct equivalent but a higher-strength carbon steel option for superheater service .
Contact for Quote – ASME SA210 Boiler and Superheater Tubes
Please provide the following details for your boiler or superheater project:
Grade : A-1 / C
OD (inch / mm) : _______
WT (mm) : _______
Length (m) : _______
Quantity : _______ (pieces / meters / tons)
Application : Boiler / Superheater / Economizer / Reheater
End Finish : Plain / Beveled / Threaded
Inspection : Standard / Third-party (SGS/BV/TUV)
📧 Email: yjhtrade@gmail.com
📞 WhatsApp: +86 15106174543
🌐 Website: www.wuxihengzhihui.com
Reply within 24 hours.
FAQ – ASME SA210 Boiler and Superheater Tubes
Q1: What is the difference between ASME SA210 Grade A-1 and Grade C?
A: Grade C has higher carbon content (0.35% max vs 0.27% max) , resulting in higher tensile strength (≥485 MPa vs ≥415 MPa) and higher hardness (≤89 HRB vs ≤79 HRB). Grade C is recommended for higher pressure and higher temperature superheater applications .
Q2: What is the difference between ASME SA192 and ASME SA210?
A: SA210 is medium-carbon steel with higher strength (≥415/485 MPa) compared to SA192 (≥325 MPa). SA210 is specifically designed for superheater and higher-temperature boiler applications .
Q3: Can ASME SA210 be used for superheater tubes?
A: Yes. SA210 Grade C is specifically designed for superheater and reheater service in steam boilers, where tubes must withstand high pressure, elevated temperatures, and continuous thermal cycling .
Q4: What is the maximum operating temperature for SA210?
A: SA210 Grade A-1 is typically used up to 450°C. Grade C can be used up to 500-550°C depending on pressure and design conditions. For higher temperatures, consider ASME SA213 alloy grades .
Q5: Is SA210 suitable for ASME Code Section I stamping?
A: Yes. SA210 is listed in ASME Boiler and Pressure Vessel Code Section II and is acceptable for ASME Section I (Power Boilers) stamping.
Q6: Does ASME SA210 require impact testing?
A: Not typically for standard boiler service. However, specific applications may require impact testing per ASME Code requirements. Consult your design engineer.
Q7: What certifications do you provide for SA210?
A: EN 10204 Type 3.1 MTC with heat number, chemical analysis, tensile test, flattening test, flaring test, and hardness test results. ASME Certificate of Compliance available .
Q8: Is Grade C suitable for bending into superheater coils?
A: Yes. However, due to higher carbon content, Grade C requires more careful bending practices. Stress relief after cold bending is strongly recommended.
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 upon request for straight tube. Shipping fee applies.
Q11: What is the typical lead time for SA210 Grade C superheater tubes?
A: Stock sizes (2″ OD): 7-15 days. Custom sizes: 20-30 days.
Q12: Can SA210 be welded?
A: Yes. SA210 has good weldability. Grade C with higher carbon may require preheating (150-200°C) and post-weld heat treatment (PWHT) depending on thickness and service conditions.
Related Products – Boiler and Superheater Tubes
ASME SA179 – Low carbon heat exchanger tubes (lowest strength)
ASME SA192 – Low carbon high pressure boiler tubes (standard strength)
ASME SA210 A-1 – Medium carbon boiler tubes (higher strength)
ASME SA210 Grade C – Medium carbon superheater tubes (highest strength carbon steel)
ASME SA213 – Alloy steel superheater tubes (T11, T22, T91)
ASME SA334 – Low temperature tubes
Tags: ASME SA210 SA210 Grade C SA210 A-1 Boiler Tube Superheater Tube Medium Carbon Steel Tube Seamless Boiler Tube ASME Code
Quick Reference: ASME SA210 Grade Comparison
| Parameter | Grade A-1 | Grade C |
|---|---|---|
| Carbon (max) | 0.27% | 0.35% |
| Tensile Strength | ≥415 MPa | ≥485 MPa |
| Yield Strength | ≥255 MPa | ≥275 MPa |
| Hardness (HRB) | ≤79 | ≤89 |
| Typical Application | Boiler tubes, economizers | Superheaters, reheaters |
| GB Equivalent | 20G | 15CrMoG / high-strength 20G |
| Cost Level | $ | $$ |
| Lead Time | 7-15 days | 7-15 days (stock) |
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