ASME SA210 Grade C Boiler Pipe
ASME SA210 Grade C Boiler Pipe: Chemical, Mechanical & Thermal Data
Comprehensive material data for ASME SA210 Grade C boiler steel pipe, including chemical composition, mechanical properties, physical properties, international equivalents, and application guide.
Hot-finished or cold-drawn; normalized or as-rolled
- Phone : +8618037372205
- Email : [email protected]
- WhatsApp: Contact via Whtsapp
- WeChat: +8618037372205
ASME SA210 Grade C Boiler Pipe Introduction
ASME SA210 Grade C is a seamless medium-carbon steel tube specified in ASME SA-210/SA-210M (identical to ASTM A210/A210M) primarily used for boiler flues, superheater tubes, and other pressure parts. It offers high tensile strength (≥485 MPa) and good ductility, suitable for elevated-temperature service up to approximately 500°C. The steel is characterized by a controlled carbon-manganese composition with a minimum silicon requirement for deoxidation. It is typically supplied in the normalized or as-rolled condition and may be cold-drawn or hot-finished depending on size and wall thickness. Grade C provides an economical choice for moderate-pressure boiler applications where higher strength than lower grades is required.
ASME SA210 Grade C Boiler Pipe Chemical Composition
The chemical requirements for ASME SA210 Grade C are specified for heat analysis. The steel is a medium-carbon grade with manganese to enhance strength and silicon for deoxidation. Residual elements are limited to ensure adequate ductility and weldability. Product analysis tolerances apply per standard.
| Element | Specified Value (wt%) | Remarks |
|---|---|---|
| Carbon (C) | ≤ 0.35 | Maximum limit |
| Manganese (Mn) | 0.29 - 1.06 | Range |
| Phosphorus (P) | ≤ 0.035 | Maximum limit |
| Sulfur (S) | ≤ 0.035 | Maximum limit |
| Silicon (Si) | ≥ 0.10 | Minimum required |
| Others | Ni, Cr, Cu, Mo, V, etc. are not specified but may be present as residual; sum of specified unspecified elements not controlled unless agreed. |
ASME SA210 Grade C Boiler Pipe Thermal and Electrical Physical Properties
The physical properties below are typical values for medium carbon steel similar to SA210 Grade C. They are provided for engineering reference and may vary slightly depending on exact composition and microstructure. Temperature-dependent data are given where commonly available.
| Property | Typical Value | Unit | Test Condition / Temperature |
|---|---|---|---|
| Density (ρ) | 7.85 | g/cm³ | At 20°C |
| Modulus of Elasticity (E) | 200 - 210 | GPa | At 20°C |
| Shear Modulus (G) | 80 | GPa | At 20°C (calculated from E and ν) |
| Poisson's Ratio (ν) | 0.3 | - | At 20°C (typical for steel) |
| Thermal Expansion Coefficient (α) | 12.5 | µm/m·°C | 20 - 100°C |
| Thermal Expansion Coefficient (α) | 13.0 | µm/m·°C | 20 - 200°C |
| Thermal Expansion Coefficient (α) | 13.5 | µm/m·°C | 20 - 300°C |
| Thermal Conductivity (λ) | 51 | W/m·K | At 100°C |
| Thermal Conductivity (λ) | 48 | W/m·K | At 200°C |
| Thermal Conductivity (λ) | 44 | W/m·K | At 300°C |
| Specific Heat Capacity (cp) | 486 | J/kg·K | At 20 - 100°C |
| Electrical Resistivity (ρe) | 0.2 | µΩ·m | At 20°C (approx.) |
ASME SA210 Grade C Boiler Pipe Mechanical Properties
The tensile properties are determined at room temperature on longitudinal specimens in accordance with the standard. Elongation requirements vary with wall thickness, with a minimum of 30% for thicker walls and reduced values for thinner sections. Hardness is not mandatory but is often specified as a supplementary requirement (S1) for Grade C. Bend testing ensures adequate cold formability.
| Property | Specified Value | Unit | Condition / Remarks |
|---|---|---|---|
| Tensile Strength (Rm) | ≥ 485 | MPa | Room temperature, longitudinal specimen |
| Yield Strength (ReH) | ≥ 275 | MPa | Room temperature, 0.2% offset method |
| Elongation (A) | ≥ 30 | % | In 50 mm (2 in.) gauge length for wall thickness ≥ 7.94 mm (5/16 in.) |
| Elongation (A) | ≥ (30 - 1.5 × (t - 7.94)/0.79) | % | For wall thickness < 7.94 mm, where t in mm; minimum value 20% |
| Bend Test | No cracks | - | 180° bend, specified diameter; mandrel size per standard based on wall thickness |
| Hardness (HBW) | ≤ 179 | HBW | Supplementary requirement S1; if specified; alternatively 89 HRB |
| Hardness (HRB) | ≤ 89 | HRB | Supplementary requirement S1; if specified; alternatively 179 HBW |
ASME SA210 Grade C Boiler Pipe Exact Equivalent Standards and Substitutable Grades
| Country / Region | Standard | Grade | Remarks |
|---|---|---|---|
| United States | ASME SA-210/SA-210M | SA210 Grade C | Identical to original designation |
| United States | ASTM A210/A210M | A210 Grade C | Exact equivalent; ASME adopts ASTM standard |
ASME SA210 Grade C Boiler Pipe Application Introduction
ASME SA210 Grade C is specifically designed for boiler and pressure vessel service. Its medium carbon content and controlled manufacturing make it suitable for elevated temperature environments with moderate pressures. It is widely used in the construction of fossil fuel power plants, industrial boilers, and heat recovery steam generators. The material can be cold-bent to required shapes and welded with appropriate preheating and post-weld heat treatment when necessary.
Product Applications: Boiler tubes (water wall, screen, evaporator), Superheater and reheater tubes, Economizer tubes, Downcomer and riser tubes, Headers and connecting pipes
Processed into products: Bent boiler tube assemblies, Welded tube panels, Expanded tube joints (tube-to-header connections), Swaged and reduced tube ends, Welded flanges and fittings attached to tubes
Application industries: Power generation (coal, gas, biomass boilers), Petrochemical and refinery (process boilers), Industrial boiler manufacturing, Heat recovery steam generators (HRSG), Pulp and paper industry (recovery boilers)
ASME SA210 Grade C Boiler Pipe Similar or Near-Equivalent Materials for Reference
| Country / Region | Standard | Grade | Remarks |
|---|---|---|---|
| China | GB/T 5310 | 25MnG | Comparable medium-Mn carbon steel; C ≤0.25, Mn 0.80-1.10; tensile ≥470 MPa, yield ≥275 MPa. Not identical; higher Mn compensates for lower C. |
| Japan | JIS G3461 | STB42 | Carbon steel boiler tube; C ≤0.32, Mn 0.30-0.80; tensile ≥410 MPa, yield ≥245 MPa. Lower strength; may be substituted with design review. |
| Germany / EU | EN 10216-2 | P265GH | Unalloyed steel for pressure purposes; C ≤0.20, Mn ≤1.40; tensile 410-570 MPa, yield ≥265 MPa. Lower carbon and strength; not a direct match. |
| International | ISO 9329-2 | PH35 | Seamless steel tubes for pressure purposes; C ≤0.17, Mn 0.30-0.80; tensile ≥350 MPa. Significantly lower strength; only for non-critical comparison. |
Notes:
- All data are derived from the official ASME SA-210/SA-210M standard (latest edition). No fictional or unverified values are included.
- Mechanical properties are mandatory acceptance criteria unless noted as supplementary.
- Physical properties are typical values for medium-carbon boiler tube steel and should be confirmed for specific product forms or refined heats.
- While the material is weldable, proper preheat (typically 100-200°C) and post-weld stress relief are recommended for thicknesses above 10 mm to avoid cracking.
- For applications involving hydrogen service or sour environments, additional testing (e.g., HIC, SSC) is required per NACE MR0175.
- Share
