เหล็กผสมอื่นๆ
ภาพรวม
254 SMO stub end is a pipe fitting made from 254 SMO, a high-alloy super-austenitic stainless steel (also known as 6Mo super-austenitic). It is designed for use with lap joint flanges in piping systems requiring exceptional resistance to pitting, crevice corrosion, and stress corrosion cracking in severe chloride environments.
คำอธิบาย (อังกฤษ)
254 SMO stub end is a pipe fitting made from 254 SMO, a high-alloy super-austenitic stainless steel (also known as 6Mo super-austenitic). It is designed for use with lap joint flanges in piping systems requiring exceptional resistance to pitting, crevice corrosion, and stress corrosion cracking in severe chloride environments.
ช่วงขนาด
- 1/2" (DN15) – 24" (DN600)
ข้อกำหนดเกรด
| ระบบ | ค่า |
|---|---|
| 🇺🇸 UNS | S31254 |
| ASTM / ASME | A182 F44 (forgings), A312 TP31254 (pipe), A403 WP31254 (fittings) |
| 🇪🇺 EN | 1.4547 (X1CrNiMoCuN20-18-7) |
| 🇪🇺 EN | 1.4547 |
| 🇯🇵 JIS | SUS31254 |
| 🇨🇳 GB | 015Cr21Ni26Mo5Cu2 (S31254) |
องค์ประกอบทางเคมี
| ธาตุ | ค่า |
|---|---|
| C | ≤ 0.020 |
| Si | ≤ 0.80 |
| Mn | ≤ 1.00 |
| P | ≤ 0.030 |
| S | ≤ 0.010 |
| Cr | 19.5 – 20.5 |
| Ni | 17.5 – 18.5 |
| Mo | 6.0 – 6.5 |
| Cu | 0.50 – 1.00 |
| N | 0.18 – 0.22 |
| Fe | Balance |
คุณสมบัติเชิงกล
| productCenter.property | ค่า |
|---|---|
| Tensile Strength Rm | ≥ 650 MPa |
| Yield Strength Rp0.2 | ≥ 300 MPa |
| Elongation A (50mm) | ≥ 35% |
| Reduction in Area | - |
| Hardness | ≤ 210 HB |
| Impact KV2 (room temp) | - |
คุณสมบัติทางกายภาพ
| คุณสมบัติ | หน่วย | ค่า |
|---|---|---|
| Density | g/cm³ | 8.00 g/cm³ |
| Melting Point Range | °C | 1,320 – 1,390 °C |
| Modulus of Elasticity | GPa | 195 GPa |
| Shear Modulus | - | 74 GPa |
| Poisson's Ratio | - | 0.30 |
| Thermal Conductivity (20°C) | W/m·K | 14 W/(m·K) |
| CTE (20–100°C) | - | 16.5 ppm/°C |
| Specific Heat (20°C) | J/kg·K | 0.50 kJ/(kg·K) |
| Electrical Resistivity (20°C) | μΩ·cm | 0.85 μΩ·m |
| Magnetism | - | Non-magnetic (fully austenitic) |
การใช้งาน
- Seawater Systems
- Oil & Gas / Offshore
- Chemical Processing
- Power Generation
- Desalination
- Pulp & Paper
- Pharmaceutical
- Food / Beverage
- Marine