ASME SA-192M SA-192 Boiler Steel Pipe
ASME SA-192M SA-192 Boiler Steel Pipe: Chemical, Mechanical & Physical Data
Complete material datasheet for ASME SA-192M (SA-192) seamless carbon steel boiler tube, including chemical composition, tensile properties, physical constants, equivalent grades, and application guide.
Cold drawing, hot finishing, bending, flanging, welding (with suitable procedures).
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ASME SA-192M SA-192 Boiler Steel Pipe Introduction
ASME SA-192M (SA-192) is a seamless carbon steel boiler tube specification primarily used for high-pressure service in power plants and industrial boilers. It is identical to ASTM A192/A192M. The steel is produced by the electric-furnace or basic-oxygen process and is suitable for bending, flanging, and similar forming operations. Key features include:
- Controlled carbon content (0.06–0.18%) for good weldability and moderate strength.
- Minimum tensile strength of 325 MPa (47 ksi) and yield strength of 180 MPa (26 ksi).
- High elongation (≥35% in 50 mm) ensuring ductility for cold working and expansion.
- Compliant with ASME Boiler and Pressure Vessel Code, Section II, Part A.
ASME SA-192M SA-192 Boiler Steel Pipe Chemical Composition
Ladle analysis in accordance with ASME SA-192/SA-192M and ASTM A192/A192M. All elements are controlled to ensure consistent high-temperature strength and weldability.
| Element | Standard Value (max unless range) | Remarks |
|---|---|---|
| Carbon (C) | 0.06 – 0.18 | Required range |
| Manganese (Mn) | 0.27 – 0.63 | Required range |
| Phosphorus (P) | 0.035 | Maximum |
| Sulfur (S) | 0.035 | Maximum |
| Silicon (Si) | 0.25 | Maximum; not mandatory, but if reported it must meet the limit |
| Iron (Fe) | Balance | Remainder |
ASME SA-192M SA-192 Boiler Steel Pipe Thermal and Electrical Physical Properties
Typical values for carbon steel with similar composition. Actual values may slightly vary depending on exact heat treatment and product form. Data are taken from published literature for plain carbon steels (e.g., ASME BPVC Section II Part D).
| Property | Typical Value | Unit | Test Condition / Remarks |
|---|---|---|---|
| Density (ρ) | 7.85 | g/cm³ | Room temperature |
| Elastic Modulus (E) | 200 – 210 | GPa | Room temperature; 207 GPa (30 × 10⁶ psi) commonly used |
| Shear Modulus (G) | 80 | GPa | Typical for carbon steel |
| Poisson's Ratio (ν) | 0.30 | — | Room temperature |
| Thermal Expansion Coefficient (α) @ 100°C | 11.7 | 10⁻⁶/K | 0 – 100°C range |
| Thermal Expansion Coefficient (α) @ 200°C | 12.2 | 10⁻⁶/K | 0 – 200°C range |
| Thermal Expansion Coefficient (α) @ 300°C | 12.8 | 10⁻⁶/K | 0 – 300°C range |
| Thermal Conductivity (λ) @ 20°C | 51.9 | W/(m·K) | Typical for low‑carbon steel |
| Thermal Conductivity (λ) @ 100°C | 50.5 | W/(m·K) | — |
| Thermal Conductivity (λ) @ 200°C | 48.0 | W/(m·K) | — |
| Specific Heat Capacity (cp) | 486 | J/(kg·K) | At room temperature |
| Electrical Resistivity (ρe) | 0.143 – 0.178 | μΩ·m | At 20°C; typical for C‑Mn steel |
ASME SA-192M SA-192 Boiler Steel Pipe Mechanical Properties
Tensile test at room temperature following ASME SA-192/SA-192M. For strip tests, elongation in 2 in. (50 mm) applies; for full-section tubular specimens, elongation requirements vary with specimen size.
| Property | Required Value | Unit | Test Condition / Remarks |
|---|---|---|---|
| Tensile Strength (Rm) | ≥ 325 (47) | MPa (ksi) | Room temperature, transverse or longitudinal specimen |
| Yield Strength (ReH or Rp0.2) | ≥ 180 (26) | MPa (ksi) | 0.2% offset or upper yield; room temperature |
| Elongation (A) | ≥ 35 | % | 50 mm (2 in.) gauge length, strip test; for full-section specimen see standard table |
| Elongation (full-section tubular) | Calculated per formula | % | Based on specimen dimensions per ASME SA-192 |
| Bend Test (180°) | No cracks on outside of bent portion | — | 180° bend around a cylindrical mandrel with diameter 8 times the wall thickness for tubes with wall ≤ 0.72 in. (18.3 mm) |
| Hardness | Not specified | — | Typically ≤ 77 HRB or ≤ 137 HBW (informative) |
| Impact Test (KV) | Not required | — | Not specified for this grade |
ASME SA-192M SA-192 Boiler Steel Pipe Completely Equivalent Material Standards & Replaceable Grades
| Country / Region | Standard | Grade | Remarks |
|---|---|---|---|
| USA / International | ASTM A192/A192M | A192 | Identical technical requirements to ASME SA-192 |
| USA / International | ASME SA-192/SA-192M | SA-192 | Base specification; material is the same as ASTM A192 |
| Japan | JIS G3461 | STB 340 | Comparable carbon steel boiler tube grade (STB340); slight differences in Mn and Si limits |
| European Union | EN 10216-2 | P195GH | Seamless steel tubes for pressure purposes; chemical limits differ (P195GH has C ≤ 0.13%, Mn 0.7–1.00%, Si ≤ 0.35%) |
| China | GB/T 5310 | 20G | Seamless steel pipe for high-pressure boiler; C 0.17–0.23%, Mn 0.35–0.65%, Si 0.17–0.37%. Not fully interchangeable design-wise |
ASME SA-192M SA-192 Boiler Steel Pipe Application Introduction
ASME SA-192 seamless carbon steel boiler tubes are designed for high-pressure service at elevated temperatures, typically up to around 400°C (750°F) depending on design code. They are suitable for both water and steam service. The controlled carbon content ensures good weldability and formability.
- Typical applications include boiler water‑wall panels, economizers, superheater and reheater tube banks, and steam generation piping.
- In engineering, this material is often selected for its balance of strength, ductility, and cost-effectiveness.
- It can be easily bent to small radii and expanded into tube sheets; post‑forming heat treatment may be required depending on cold work and service conditions.
Product Applications: Boiler water wall tubes, Economizer tubes, Superheater and reheater tubes, Steam headers (small bore), Heat exchanger tubes in high-pressure circuits
Processed into products: Tube panels for water-cooled furnace walls, Economizer serpentine coils, Superheater pendant and platen assemblies, Reheater tube bundles, Bent tube connections (returns and hairpins), Tube-to-header stub connections, Flanged pipe lengths with expanded ends
Application industries: Power generation (fossil fuel and waste heat boilers), Industrial boiler manufacturing, Petrochemical (process furnaces), Cogeneration plants, Heating systems (district heating)
ASME SA-192M SA-192 Boiler Steel Pipe Similar / Comparable Alternative Material Recommendations
| Country / Region | Standard | Grade | Remarks |
|---|---|---|---|
| USA / International | ASTM A106/A106M | A106 Grade A | Seamless carbon steel pipe for high-temperature service; similar C and Mn but broader ranges; not specifically for boiler tubes |
| Japan | JIS G3461 | STB 340 | Already listed as equivalent; preferred substitute in Japanese boiler applications |
| European Union | EN 10216-2 | P235GH | Higher minimum yield and tensile strength; often used for pressure vessels and boilers; requires careful welding procedure compatibility |
| China | GB/T 5310 | 20G | Widely used in Chinese boiler technology; chemical composition differs slightly but can be used with design adjustment |
Notes:
- Hydrostatic tests are mandatory per ASME SA‑192: each tube shall withstand test pressure determined by the formula P = 2St/D, with S = 60% of specified minimum yield strength.
- Nondestructive electric test is an alternative to hydrostatic testing when agreed between purchaser and manufacturer.
- Supply condition options include specific surface protection oiling or end preparation.
- Always verify the latest edition of the standard for any updates to chemical or mechanical requirements.
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