ASTM A182 F310H yog forged austenitic stainless steel khoom tsim tshwj xeeb rau kev ua haujlwm kub siab; nws sawv cev rau high-carbon hloov ntawm 310 stainless steel. Piv rau standard 310S (qhov twg carbon content yog ≤0.08%), F310H muaj carbon content tswj tau los ntawm 0.04% mus rau 0.10%, muab cov txiaj ntsig zoo hauv qab no thaum kub siab:
Superior creep strength
Enhanced structural stability at high temperatures
Exceptional oxidation resistance (txog 1150°C)
Good weldability (tsis tas yuav preheating; solution annealing yog pom zoo tom qab vuam)
Nws yog siv dav hauv high-temperature applications xws li furnace components, heat treatment equipment, steam boilers, petroleum refinery tube supports, burners, thiab lwm yam xws li demanding environments.
Technical Specifications thiab Khoom Tshwj Xeeb
| Performance Indicators | Technical Parameters |
|---|---|
| Nominal Diameter | DN600 (24in) |
| Pressure Rating | Class 300 (PN50) |
| Flange Type | WN (Weld Neck ) |
| Sealing Face Type | RF |
| Wall Thickness Schedule | Sch40S |
| Material Grade | ASTM A182 Gr. F310H (UNS S31009) |
| Chromium Content | 24.0% - 26.0% |
| Nickel Content | 19.0% - 22.0% |
| Carbon Content | 0.04% - 0.10% |
| Tensile Strength | ≥515 MPa (75 ksi) |
| Yield Strength | ≥205 MPa (30 ksi) |
| Elongation | ≥30% |
| Maximum Service Temperature | Continuous Service: 1150°C / Intermittent Service: 1035°C |
High-Temperature Performance Advantages: F310H yog high-carbon variant ntawm 310 stainless steel. Los ntawm optimizing nws carbon content (0.04–0.10%), nws qhia tau hais tias muaj superior creep resistance thiab structural stability nyob rau hauv high-temperature environments. Nws 25% chromium–20% nickel austenitic microstructure muab rau nws exceptional resistance rau oxidation, sulfidation, thiab carburization, ua rau nws tshwj xeeb tsim nyog rau:
High-temperature steam pipelines hauv thermal power plants
Petrochemical cracking units
Heat treatment furnace tube systems
High-temperature reactor connections
Quality Assurance System：
Cov khoom raug kuaj xyuas tag nrho txhua qhov chaw:
Raw Material Control: Spectroscopic analysis xyuas kom meej tias ua raws li Cr thiab Ni content standards, thaum carbon content raug tswj kom raug.
Forging Process: Hot forging xyuas kom meej grain refinement.
Heat Treatment: Solution annealing (1050°C–1150°C nram qab no sai cooling) optimize corrosion resistance.
Non-Destructive Testing: 100% Ultrasonic Testing (UT) + Radiographic Testing (RT).
Dimensional Inspection: Coordinate Measuring Machine (CMM) inspection xyuas kom meej ua raws li B16.5 tolerance requirements.
Pressure Testing: Hydrostatic testing ntawm 1.5 npaug ntawm cov design pressure (approx. 7.5 MPa).
Surface Quality: RF sealing face muaj serrated finish nrog roughness ntawm 125–250 AARH.
Third-Party Certification: EN 10204 3.2 Material Certificate.
