ASTM A213/ASME SA213
TP304H Stainless Steel Tubes
ASTM A213/ASME SA213 TP304H Stainless Steel Tubes
Short Description:
ASTM A213 ASME SA-213 TP304H stainless steel pipe is mainly used to manufacture the high temperature superheater, high temperature reheater, high temperature section of platen superheater and various high temperature and high pressure resist.
SA-213 TP304H is an austenitic stainless steel with more Cr and Ni elements, and 1Cr18Ni9 in GB5310-95 in China is similar to this steel. The steel has good structure stability, high endurance strength, oxidation resistance, and good processing properties such as elbow pipe and welding process. However, it is more sensitive to intergranular corrosion and stress corrosion, and it is easy to produce work hardening due to more alloy elements, which makes machining difficult; it has high thermal expansion coefficient and poor thermal conductivity.
ASTM A213/A213M specification covers seamless ferritic and austenitic steel boiler, superheater, and heat-exchanger tubes. The tubing sizes and thicknesses usually furnished to ASTM A213/A213M specification are 1⁄8 in. [3.2 mm] in inside diameter to 5 in.[127 mm] in outside diameter and 0.015 to 0.500 in. [0.4 to 12.7 mm], inclusive, in minimum wall thickness or, if specified in the order, average wall thickness.
Material: TP304H, S30409
Equivalent Material: 08Ch18N10, X5CrNi18-10, 1.4301, 07Cr19Ni10, X7CrNi18-9, X6CrNi18-10, SUS 304H TB
Manufacture: tubes shall be made by the seamless process and shall be either hot finished or cold finished, as specified.
Heat Treatment: solution treatment
Chemistry Composition of ASTM A213 ASME SA-213 TP304H
| C, % | Si, % | Mn, % | P, % | S, % | Cr, % | Ni, % |
| 0.04-0.10 | 1.00 max | 2.00 max | 0.045 max | 0.030 max | 18.0-20.0 | 8.0-11.0 |
Mechanical Properties of ASTM A213 ASME SA-213 TP304H
| Tensile Strength , MPa | Yield Strength, MPa | Elongation, % | Hardness, HB |
| 515 min | 205 min | 35 min | 192 max |
Outside Diameter & Tolerance
| Hot rolled | Outside Diameter, mm | Tolerance, mm |
| OD≤101.6 | +0.4/-0.8 | |
| 101.6＜OD≤190.5 | +0.4/-1.2 | |
| 190.5＜OD≤228.6 | +0.4/-1.6 | |
| 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≤190.5 | +0.38/-0.64 | |
| 190.5＜OD≤228.6 | +0.38/-1.14 |
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 |
Inspection & Test:
Chemistry composition,
Tensile test,
Hardeness test,
Flattening test,
Flaring test,
NDT,
Surface inspection and dimension check.
ASTM A213 ASME SA-213 TP304H welding material selection
The welding performance is good, and the manual welding rod uses o102, o107, o132 or e308-15 (American brand); the argon arc welding wire uses h0cr19ni9 or er-308; if it is welded with ferritic materials, it is recommended to use ernicr3 or enicrfe-3 welding wire specified in ASME standard. Solution treatment after welding can improve the thermal strength and intergranular corrosion resistance of the welding head.
Application of ASTM A213 ASME SA-213 TP304H Stainless Steel Tubes
Applicable conditions: ASTM A213 ASME SA-213 TP304H stainless steel pipe is mainly used to manufacture the high temperature superheater, high temperature reheater, high temperature section of platen superheater and various high temperature and high pressure resistant pipe fittings of large power generation boiler with subcritical ‘supercritical pressure parameters.
Allowable operating temperature: for pressure parts, the maximum operating temperature can reach 650℃; for anti-oxidation parts, the maximum anti-oxidation operating temperature can reach 850 ℃