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ASTM SA403 WP316L Concentric Reducer, Eccentric reducer, Steel Seamless Pipe Fitting B16.9
We are one of the biggest projects pipeline products supplier in China. Our products contain steel pipe/tube,fittings, flanges. With development more than 20 years, we have accumulated a great many clients all around the world and Yuhong products also won the great praise among the customers.
The ASTM A403 gr WP316 is one of the most used form of the austenitic steel in the piping world. ASTM A403 gr WP316L has slightly less corrosion resistant properties than the A403 WP316 material. But both could be used interchangeably in most conditions except where the requirement mandated one over the other. The 316 Pipe Fittings come in different shapes and standards. They could either be seamless or buttwelded. The A403 Grade WP316 Buttweld Fittings are much stronger due to the reason that they are heat treated after buttweldiing and can last longer than most other 316 Stainless Steel Fittings. The applications of the SS 316 Fitting types vary such as the elbows, bends, tees, valves, adapters and much more. The most used 316 SS Weld Fittings are of smaller pipe sizes. The ASTM A403 WP316L Fittings could be used with low cost, low pressure applications where the corrosion resistance or pressure containment is less required. The A403 WP316L Elbow would perform under high temperatures but only with a moderate corrosion resistance.
SA403 Wp316/316L
PIPE FITTINGS SPECIFICATION:
Specifications : ANSI/ASME B16.9, B16.28, MSS-SP-43.
Standard : ASTM A403
Size : ½”NB to 48″NB in Sch 10s, 40s, 80s, 160s, XXS.
Schedules :Sch.40 to Sch.XXs
Type : Seamless / Welded
Chemical composition:
| Element | Content (%) |
| Iron, Fe | 86 |
| Chromium, Cr | 12.3 |
| Manganese, Mn | 1 |
| Silicon, Si | 0.5 |
| Carbon, C | 0.15 |
| Phosphorous, P | 0.04 |
| Sulfur, S | 0.03 |
| Carbon, C | 0.15 |
Physical Properties:
| Properties | Metric | Imperial |
| Density | 7.80 g/cm3 | 0.282 lb/in³ |
Mechanical Properties:
| Properties | Metric | Imperial |
| Tensile strength | 485 MPa | 70300 psi |
| Yield strength | 310 MPa | 45000 psi |
| Fatigue Strength (annealed, @diameter 25mm/0.984 in) | 275 MPa | 39900 psi |
| Shear modulus (typical for steel) | 76.0 GPa | 11000 ksi |
| Elastic modulus | 190-210 GPa | 27557-30458 ksi |
| Poisson's ratio | 0.27-0.30 | 0.27-0.30 |
| Elongation at break (in 50 mm) | 0.25 | 0.25 |
| Izod impact (tempered) | 102 J | 75.2 ft-lb |
| Hardness, Brinell (converted from Rockwell B hardness) | 139 | 139 |
| Hardness, Knoop (converted from Rockwell B hardness) | 155 | 155 |
| Hardness, Rockwell B | 80 | 80 |
| Hardness, Vickers (converted from Rockwell B hardness) | 153 | 153 |
Thermal Properties:
| Properties | Metric | Imperial |
| Thermal expansion co-efficient (@0-100°C/32-212°F) | 9.90 µm/m°C | 5.50 µin/in°F |
| Thermal conductivity (@500°C/932°F) | 21.5 W/mK | 149 BTU in/hr.ft².°F |
Applications:
Grade 403 stainless steel is used in turbine parts and compressor blades.
