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ASTM A192 / A192M-Seamless carbon steel boiler tubes for high-pressure service
ASTM A192 covers standard specifications for minimum-wall-thickness, seamless carbon steel boiler and superheater tubes for high-pressure service. The steel shall conform to the required chemical comp...
2023-12-18 15:15:29
ASTM A192 covers standard specifications for minimum-wall-thickness, seamless carbon steel boiler and superheater tubes for high-pressure service. The steel shall conform to the required chemical composition for carbon, manganese, phosphorus, sulfur, and silicon. The tubes shall have a hardness number not exceeding a specific value. The following mechanical tests shall be conducted, namely: flattening test; flaring test; hardness test; and hydrostatic test.
The ASTM A192 belongs to the carbon seamless tubes, which is specially designed for high, middle, low pressure purpose in seamless carbon steel boilers and as super heater tubes.
Size (mm):
O.D.:6.0-114.0
W.T.:1-15
L:max 12000
Delivery Condition : As different requirements,It including pickling,etc.
Test:
Hydrostatic or Nondestructive Electric Test
Heat Treatment:Min temperature 650.
Surface Condition:Free of scale,A slight amount of oxidation will not be considered as scale.
Flattening Test,Flaring Test.Flange Test,Hardness Test,Hydrostatic Test
Chemistry composition
| C, % | Mn, % | Si, % | P, % | S, % |
| 0.06-0.18 | 0.27-0.63 | 0.25 max | 0.035 max | 0.035 max |
Mechanical properties
| Tensile Strength , MPa | Yield Strength , MPa | Elongation, % | Hardness, HB, WT≥5.1mm | Hardness, HRB, WT＜5.1mm |
| 325 min | 180 min | 35 min | 137 max | 77 max |
Outside diameter & tolerance
| Hot rolled | Outside Diameter, mm | Tolerance, mm |
| OD≤101.6 | -0.5 | |
| 101.6＜OD≤177.8 | -0.333333333 | |
| Cold Drawn | Outside Diameter, mm | Tolerance, mm |
| OD＜25.4 | ±0.10 | |
| 25.4≤OD≤38.1 | ±0.15 | |
| 38.1＜OD＜50.8 | ±0.20 | |
| 50.8≤OD＜63.5 | ±0.25 | |
| 63.5≤OD＜76.2 | ±0.30 | |
| 76.2≤OD≤101.6 | ±0.38 | |
| 101.6＜OD≤177.8 | -0.59375 |
Wall thickness & tolerance
| Hot rolled | Outside Diameter, mm | Tolerance, % |
| OD≤101.6, WT≤2.4 | +40/-0 | |
| OD≤101.6, 2.4＜WT≤3.8 | +35/-0 | |
| OD≤101.6, 3.8＜WT≤4.6 | +33/-0 | |
| OD≤101.6, WT>4.6 | +28/-0 | |
| OD>101.6, 2.4＜WT≤3.8 | +35/-0 | |
| OD>101.6, 3.8＜WT≤4.6 | +33/-0 | |
| OD>101.6, WT>4.6 | +28/-0 | |
| Cold Drawn | Outside Diameter, mm | Tolerance, % |
| OD≤38.1 | +20/-0 | |
| OD>38.1 | +22/-0 |
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