High Pressure Seamless Boiler Tube Alloy Steel Tubes 1 - 15mm Wt Size ISO9001
T22 10CrMo910 STBA24 T5 T91 T92 Alloy steel tubes for high pressure boiler application as ASME SA-213 SA-269
Reference Documents:
ASTM A262 Practices for Detecting Susceptibility to Intergranular Attach In Austenitic Stainless Steels
ASTM A941 Terminology Relating to Steel, Stainless Steel, Related Alloys, and Ferroallys
ASTM A1016/A 1016M Specification for General Requirements for Ferritic Alloy Steel, Austenitic Alloy Steel, and Stainless Steel Tubes
E112 Test Methods for Determining Average Grain Size
1. Applications: for Boilers,Superheaters,Heat-Exchangers
Size range: O.D.:6-168mm W.T.:1-15mm L: according to customer requirement
2. Manufacture:
Seamless process by Hot-Finish or Cold-Finish.
3. Boiler tubes Heater Tube in alloy steel .T5 ,T9 ,T11, T12, T21 ,T22.
Refer to below data,
4. Mechanical Properties and Inspection:
Tensile Requirement
Hardness Requirement
Flattening Test
Flaring Test
Hydrostatic or Nondestructive Electric Test ( Eddy Current Test and Ultrasonic Test)
5. Surface Condition:
Ferritic Alloy cold-finished steel tubes are free of scale and suitable for inspection
Ferritic alloy hot-finished steel tubes are freee of loose scale and suitbale for inspection.
6. Size Range: OD: 12.7-114mm, WT: 1-15mm, Length: 5.8m/6m, maximal 11.8m
7. Inspection methods:
100% Eddy Current Testing.
100% Size Tolerance Checking.
100% Tube surface checking to avoid surface defects.
Alloy Steel Pipe Heat-Exchanger Tubes SA213 Steel Grades Chemical Composition and Mechanical Properties:
Chemical Component:
| Grade | C | Mn | P≤ | S≤ | Si | Cr | Mo | V≥ |
| T11 | 0.05-0.15 | 0.30-0.60 | 0.025 | 0.025 | 0.50-1.00 | 0.50-1.00 | 1.00-1.50 | |
| T12 | 0.05-0.15 | 0.30-0.61 | 0.025 | 0.025 | ≤0.50 | 0.80-1.25 | 0.44-0.65 | |
| T13 | 0.05-0.15 | 0.30-0.60 | 0.025 | 0.025 | ≤0.50 | 1.90-2.60 | 0.87-1.13 | |
| T2 | 0.10-0.20 | 0.30-0.61 | 0.025 | 0.025 | 0.10-0.30 | 0.50-0.81 | 0.44-0.65 | |
| T5 | ≤0.15 | 0.30-0.60 | 0.025 | 0.025 | ≤0.50 | 4.00-6.00 | 0.45-0.65 | |
| T5b | ≤0.15 | 0.30-0.60 | 0.025 | 0.025 | 1.00-2.00 | 4.00-6.00 | 0.45-0.65 | |
| T5c | ≤0.12 | 0.30-0.60 | 0.025 | 0.025 | ≤0.50 | 4.00-6.00 | 0.45-0.65 | |
| T9 | ≤0.15 | 0.30-0.60 | 0.025 | 0.025 | 0.25-1.00 | 8.00-10.00 | 0.9-1.0 | |
| T22 | 0.05-0.15 | 0.30-0.60 | 0.025 | 0.025 | ≤0.50 | 1.90-2.60 | 0.87-1.13 | |
| T91 | 0.08-0.12 | 0.30-0.60 | 0.020 | 0.010 | ≤0.50 | 8-9.50 | 0.85-1.05 | 0.18-0.25 |
| T92 | 0.07-0.13 | 0.30-0.60 | 0.020 | 0.010 | ≤0.50 | 8-9.50 | 0.3-0.60 | 0.15-0.25 |
| T21 | 0.05-0.15 | 0.30-0.60 | 0.025 | 0.025 | ≤0.50 | 2.65-3.35 | 0.80-1.06 |
Mechanical Property:
| Steel grade | Tensile(MPa) | Yield(MPa) | Elongate(%) | Hardenss |
| 20MnG | ≥415 | ≥240 | ≥22 | |
| 25MnG | ≥485 | ≥275 | ≥20 | |
| 15CrMoG | 440～640 | ≥235 | ≥21 | |
| 12Cr2MoG | 450～600 | ≥280 | ≥20 | |
| 12Cr1MoVG | 470～640 | ≥255 | ≥21 | |
| 12Cr2MoWVTiB | 540～735 | ≥345 | ≥18 | |
| 10Cr9Mo1VNb | ≥585 | ≥415 | ≥20 | |
| SA210A-1 | ≥415 | ≥255 | ≥30 | ≤143HB |
| SA210C | ≥485 | ≥275 | ≥30 | ≤179HB |
| SA213 T11 | ≥415 | ≥205 | ≥30 | ≤163HB |
| SA213 T12 | ≥415 | ≥220 | ≥30 | ≤163HB |
| SA213 T22 | ≥415 | ≥205 | ≥30 | ≤163HB |
| SA213 T23 | ≥510 | ≥400 | ≥20 | ≤220HB |
| SA213 T91 | ≥585 | ≥415 | ≥20 | ≤250HB |
| SA213 T92 | ≥620 | ≥440 | ≥20 | ≤250HB |
| ST45.8/Ⅲ | 410～530 | ≥255 | ≥21 | / |
| 15Mo3 | 450～600 | ≥270 | ≥22 | |
| 13CrMo44 | 440～590 | ≥290 | ≥22 | |
| 10CrMo910 | 480～630 | ≥280 | ≥20 |
OD size tolerance:
| OD | Plus tolerance(+) | Minus tolerance (-) |
| 10.29—48.3 | 0.4 | 0.4 |
| <48.3—-≤114.3 | 0.79 | 0.79 |
8.Application:
High pressure, low & medium pressure boiler steel pipestubes are suitable for making
super-heaters, re-heaters, water wall, and economizer in large-scale power plant.
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