S34700 Stainless Steel Metal Plate 347H Stainless Steel Plate
Alloy 347 (S34700) is a stabilized stainless steel plate that offers excellent resistance to intergranular corrosion following exposure to temperatures in the chromium carbide precipitation range from 800 to 1500°F (427 to 816°C). This alloy is stabilized by the addition of columbium and tantalum, making it particularly advantageous for high-temperature service due to its superior mechanical properties.
Alloy 347 stainless steel plate provides higher creep and stress rupture properties compared to Alloy 304 and Alloy 304L, making it an ideal choice for applications where sensitization and intergranular corrosion are primary concerns.
Specifications and Dimensions
Specifications
- AMS 5512, AMS 5646, AMS 5680
- ASME SA 240
- ASTM A 269, ASTM A 479, ASTM A262 Practice E
- MSRR 5632, PWA 300, PWA F17 LCS
- UNS S34700, UNS S34709
- W. Nr./EN 1.4550
Dimension Ranges
- Width: 600mm - 2030mm
- Thickness: 0.1mm - 120.0mm
- Length: 300mm - 6000mm (Maximum: 18000mm)
Surface Finish Options
No.1, 2B, BA, No.3, No.4, No.5, No.8, HL, Etching, SB, Ti-coating, color-coating, embossing
Applications
- Chemical Processing
- Food Processing - equipment and storage
- Petroleum Refining - fluid catalytic cracking units, polythionic acid service
- Pharmaceutical Production
- Waste Heat Recovery - recuperators
Technical Data Sheet
Electrical Properties
| Electrical resistivity (µOhm.cm) |
70-73 |
Mechanical Properties
| Elongation at break (%) |
<60 |
| Hardness - Brinell |
160-190 |
| Izod impact strength (J.m⁻¹) |
20-136 |
| Modulus of elasticity (GPa) |
190-210 |
| Tensile strength (MPa) |
520-1100 |
Physical Properties
| Density (g.cm⁻³) |
7.93 |
| Melting point (°C) |
1400-1425 |
Thermal Properties
| Coefficient of thermal expansion (x10⁻⁶ K⁻¹) |
16-18 @ 20-100°C |
| Maximum use temperature in air (°C) |
800 |
| Thermal conductivity |
16.4 W/mK | 114 BTU in/hr.ft².°F |
| Thermal expansion co-efficient (@0.000-100°C/32-212°F) |
11 µm/m°C | 6.11 µin/in°F |