Comparison of SA-210C Boiler Tube and 20G Boiler Tube.
SA-210C (25MnG) is ASME SA-210 standard steel, is a boiler and superheater with carbon-manganese steel small-caliber tube, pearlitic heat-resistant steel.
Comparison of chemical properties of SA-210C and 20G
ASME SA210 C Seamless Boiler Steel Pipe Chemical Composition
| Grade | Chemical Composition(%) | ||||
| C | Mn | Si | P | S | |
| ASME SA210 C | ≤0.35 | 0.29-1.06 | ≥0.10 | ≤0.035 | ≤0.035 |
20G high pressure boiler tube Chemical Composition
| Grade | Chemical Composition(%) | |||||||||
| C | Si | Mn | P | S | Cr | Mo | Cu | Ni | V | |
| 20G | 0.17-0.24 | 0.17-0.37 | 0.70-1.00 | ≤0.03 | ≤0.03 | ≤0.25 | ≤0.15 | ≤0.2 | ≤0.25 | ≤0.08 |
SA-210C and 20G of the physical properties of contrast
ASME SA210 C Seamless Boiler Steel Pipe Mechanical property
| Grade | Mechanical property | ||
| Tensile Strength(MPa) | Yield Strength(MPa) | Elongation(%) | |
| ASME SA210 C | ≥485 | ≥275 | ≥30 |
20G high pressure boiler tube Mechanical property
| Grade | Mechanical property | ||
| Tensile Strength(MPa) | Yield Strength(MPa) | Elongation(%) | |
| 20G | ≥240 | ≥415 | ≥22 |
SA-210C boiler tube chemical composition is simple, in addition to carbon, manganese content is high, the rest and 20G close.
The yield strength of the SA-210C boiler tube is about 20% higher than that of the 20G boiler tube, while the ductility and toughness are comparable to those of the 20G boiler tube.
SA-210C boiler tube production process is simple, hot and cold processing performance. With SA-210C boiler tube instead of 20G boiler tube, you can thin wall thickness, reduce the amount of material, but also can improve the heat transfer of the boiler. The use of parts and the use of temperature and 20G is basically the same, mainly for working temperature below 500 ℃ water wall, economizer, low temperature superheater and other components.
SA210C / ASTM A213 Grade C
Tubing Specifications
| SA210C / ASTM A210 Grade C Chemical Composition |
|
|---|---|
| Carbon Max: 0.35% | Silicon Min: 0.10% |
| Manganese*: 0.29-1.06% | Nickle: N/A |
| Phosphorus Max: 0.035% | Chromium: N/A |
| Sulfur Max: 0.035% | Molybdenum: N/A |
| SA210C / ASTM A210 Grade C Mechanical Properties |
|
|---|---|
| Tensile Strength | ksi: 70 MPa: 485 |
| Yield | ksi: 40 MPa: 275 |
| Maximum Hardness | |
| Rockwell B | 89 HRB Max. |
| Brinell | 179 HB Max. |
*Manganese can increase above 1.06% up to 1.35% at a rate of 0.06 for every 0.01% the carbon is below the maximum (0.35%). Elongation in 2in. or 50mm, min: 30% SA210C is a P1 Material.
